./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix011_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/mix011_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/mix011_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix011_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 18:17:17,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:17:17,843 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:17:17,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:17:17,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:17:17,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:17:17,873 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:17:17,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:17:17,874 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:17:17,877 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:17:17,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:17:17,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:17:17,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:17:17,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:17:17,879 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:17:17,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:17:17,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:17:17,880 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:17:17,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:17:17,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:17:17,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:17:17,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:17:17,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:17:17,882 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:17:17,882 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:17:17,882 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:17:17,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:17:17,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:17:17,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:17:17,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:17:17,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:17:17,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:17:17,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:17:17,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:17:17,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:17:17,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:17:17,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:17:17,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:17:17,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:17:17,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:17:17,886 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:17:17,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:17:17,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:17:17,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:17:18,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:17:18,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:17:18,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:17:18,086 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:17:18,086 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:17:18,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix011_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 18:17:18,257 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:17:18,257 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:17:18,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:17:19,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:17:19,403 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:17:19,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:17:19,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145980d7a/8bfa5088554449c58283bf3e528e36be/FLAG5ba5d90db [2024-06-27 18:17:19,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145980d7a/8bfa5088554449c58283bf3e528e36be [2024-06-27 18:17:19,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:17:19,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:17:19,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:17:19,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:17:19,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:17:19,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:17:18" (1/2) ... [2024-06-27 18:17:19,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7054790c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:17:19, skipping insertion in model container [2024-06-27 18:17:19,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:17:18" (1/2) ... [2024-06-27 18:17:19,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31a0619b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:17:19, skipping insertion in model container [2024-06-27 18:17:19,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:17:19" (2/2) ... [2024-06-27 18:17:19,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7054790c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19, skipping insertion in model container [2024-06-27 18:17:19,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:17:19" (2/2) ... [2024-06-27 18:17:19,448 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:17:19,518 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:17:19,520 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((! multithreaded || a$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:17:19,520 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || a$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:17:19,520 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || a$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:17:19,520 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:17:19,521 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-27 18:17:19,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:17:19,675 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/mix011_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 18:17:19,844 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:17:19,854 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:17:19,880 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/mix011_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:17:19,948 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:17:19,996 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:17:19,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19 WrapperNode [2024-06-27 18:17:19,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:17:19,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:17:19,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:17:19,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:17:20,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,061 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-27 18:17:20,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:17:20,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:17:20,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:17:20,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:17:20,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,102 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 18:17:20,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:17:20,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:17:20,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:17:20,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:17:20,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (1/1) ... [2024-06-27 18:17:20,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:17:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:17:20,160 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 18:17:20,168 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 18:17:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:17:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:17:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:17:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:17:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:17:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:17:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:17:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:17:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:17:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:17:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:17:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:17:20,197 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 18:17:20,343 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:17:20,345 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:17:20,600 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:17:20,600 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:17:20,735 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:17:20,735 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:17:20,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:17:20 BoogieIcfgContainer [2024-06-27 18:17:20,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:17:20,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:17:20,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:17:20,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:17:20,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:17:18" (1/4) ... [2024-06-27 18:17:20,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce862d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:17:20, skipping insertion in model container [2024-06-27 18:17:20,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:17:19" (2/4) ... [2024-06-27 18:17:20,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce862d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:17:20, skipping insertion in model container [2024-06-27 18:17:20,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:19" (3/4) ... [2024-06-27 18:17:20,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce862d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:17:20, skipping insertion in model container [2024-06-27 18:17:20,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:17:20" (4/4) ... [2024-06-27 18:17:20,743 INFO L112 eAbstractionObserver]: Analyzing ICFG mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:17:20,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:17:20,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:17:20,756 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:17:20,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:17:20,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:17:20,850 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 18:17:20,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:17:20,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-27 18:17:20,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:17:20,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-27 18:17:20,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:17:20,871 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;@6fe7bccb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:17:20,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:17:20,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:17:20,874 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:17:20,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:17:20,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:20,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:17:20,875 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 18:17:20,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash 347829558, now seen corresponding path program 1 times [2024-06-27 18:17:20,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353438965] [2024-06-27 18:17:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:21,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353438965] [2024-06-27 18:17:21,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353438965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:21,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:21,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:17:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175201865] [2024-06-27 18:17:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:21,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:17:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:17:21,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:17:21,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:17:21,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 18:17:21,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:21,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:17:21,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:22,698 INFO L124 PetriNetUnfolderBase]: 4500/7459 cut-off events. [2024-06-27 18:17:22,698 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-27 18:17:22,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14022 conditions, 7459 events. 4500/7459 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50374 event pairs, 3527 based on Foata normal form. 211/7043 useless extension candidates. Maximal degree in co-relation 14010. Up to 6446 conditions per place. [2024-06-27 18:17:22,734 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 42 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-27 18:17:22,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 229 flow [2024-06-27 18:17:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:17:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:17:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 18:17:22,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6802721088435374 [2024-06-27 18:17:22,746 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 100 transitions. [2024-06-27 18:17:22,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 229 flow [2024-06-27 18:17:22,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:22,754 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-27 18:17:22,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 18:17:22,758 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 18:17:22,758 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-27 18:17:22,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 18:17:22,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:22,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:17:22,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:17:22,759 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 18:17:22,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash 347829967, now seen corresponding path program 1 times [2024-06-27 18:17:22,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:22,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103831458] [2024-06-27 18:17:22,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:22,837 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 18:17:22,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:22,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103831458] [2024-06-27 18:17:22,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103831458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:22,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:22,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:17:22,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859115258] [2024-06-27 18:17:22,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:22,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:17:22,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:17:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:17:22,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-06-27 18:17:22,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 18:17:22,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:22,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-06-27 18:17:22,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:23,106 INFO L124 PetriNetUnfolderBase]: 996/1925 cut-off events. [2024-06-27 18:17:23,106 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:17:23,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 1925 events. 996/1925 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13013 event pairs, 655 based on Foata normal form. 0/1776 useless extension candidates. Maximal degree in co-relation 3677. Up to 1277 conditions per place. [2024-06-27 18:17:23,118 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 35 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-06-27 18:17:23,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 236 flow [2024-06-27 18:17:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:17:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:17:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 18:17:23,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-06-27 18:17:23,120 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 3 states and 116 transitions. [2024-06-27 18:17:23,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 236 flow [2024-06-27 18:17:23,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:17:23,122 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 126 flow [2024-06-27 18:17:23,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 18:17:23,123 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 18:17:23,123 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 126 flow [2024-06-27 18:17:23,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 18:17:23,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:23,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:23,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:17:23,124 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 18:17:23,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash -743197836, now seen corresponding path program 1 times [2024-06-27 18:17:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:23,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662043976] [2024-06-27 18:17:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:23,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:23,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:23,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662043976] [2024-06-27 18:17:23,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662043976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:23,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:23,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:17:23,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295393436] [2024-06-27 18:17:23,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:23,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:17:23,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:17:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:17:23,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:17:23,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:17:23,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:23,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:17:23,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:24,351 INFO L124 PetriNetUnfolderBase]: 3821/6250 cut-off events. [2024-06-27 18:17:24,352 INFO L125 PetriNetUnfolderBase]: For 1408/1408 co-relation queries the response was YES. [2024-06-27 18:17:24,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13175 conditions, 6250 events. 3821/6250 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 40030 event pairs, 2471 based on Foata normal form. 3/5997 useless extension candidates. Maximal degree in co-relation 13162. Up to 5470 conditions per place. [2024-06-27 18:17:24,380 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 50 selfloop transitions, 8 changer transitions 2/73 dead transitions. [2024-06-27 18:17:24,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 318 flow [2024-06-27 18:17:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:17:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:17:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-27 18:17:24,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-06-27 18:17:24,382 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 126 flow. Second operand 4 states and 124 transitions. [2024-06-27 18:17:24,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 318 flow [2024-06-27 18:17:24,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:24,384 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 187 flow [2024-06-27 18:17:24,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 18:17:24,385 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-27 18:17:24,385 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 187 flow [2024-06-27 18:17:24,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:17:24,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:24,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:24,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:17:24,386 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 18:17:24,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1564294907, now seen corresponding path program 1 times [2024-06-27 18:17:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:24,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310348771] [2024-06-27 18:17:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:24,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:25,229 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 18:17:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310348771] [2024-06-27 18:17:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310348771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:17:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5981465] [2024-06-27 18:17:25,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:17:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:17:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:17:25,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:17:25,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 18:17:25,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:25,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:17:25,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:25,845 INFO L124 PetriNetUnfolderBase]: 3310/5617 cut-off events. [2024-06-27 18:17:25,845 INFO L125 PetriNetUnfolderBase]: For 2400/2400 co-relation queries the response was YES. [2024-06-27 18:17:25,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12682 conditions, 5617 events. 3310/5617 cut-off events. For 2400/2400 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 36542 event pairs, 1990 based on Foata normal form. 5/5422 useless extension candidates. Maximal degree in co-relation 12667. Up to 4663 conditions per place. [2024-06-27 18:17:25,868 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 66 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-06-27 18:17:25,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 497 flow [2024-06-27 18:17:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:17:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:17:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-06-27 18:17:25,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6489795918367347 [2024-06-27 18:17:25,870 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 187 flow. Second operand 5 states and 159 transitions. [2024-06-27 18:17:25,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 497 flow [2024-06-27 18:17:25,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 486 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:17:25,875 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 301 flow [2024-06-27 18:17:25,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-27 18:17:25,875 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-06-27 18:17:25,875 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 301 flow [2024-06-27 18:17:25,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 18:17:25,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:25,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:25,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:17:25,876 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 18:17:25,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1248500301, now seen corresponding path program 1 times [2024-06-27 18:17:25,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138185620] [2024-06-27 18:17:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:26,913 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 18:17:26,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:26,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138185620] [2024-06-27 18:17:26,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138185620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:26,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:26,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:17:26,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684571607] [2024-06-27 18:17:26,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:26,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:17:26,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:17:26,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:17:27,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:17:27,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:27,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:27,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:17:27,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:27,598 INFO L124 PetriNetUnfolderBase]: 3332/5173 cut-off events. [2024-06-27 18:17:27,598 INFO L125 PetriNetUnfolderBase]: For 5702/5705 co-relation queries the response was YES. [2024-06-27 18:17:27,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14308 conditions, 5173 events. 3332/5173 cut-off events. For 5702/5705 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30689 event pairs, 1185 based on Foata normal form. 7/5105 useless extension candidates. Maximal degree in co-relation 14289. Up to 4629 conditions per place. [2024-06-27 18:17:27,633 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 78 selfloop transitions, 33 changer transitions 0/124 dead transitions. [2024-06-27 18:17:27,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 124 transitions, 755 flow [2024-06-27 18:17:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-27 18:17:27,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2024-06-27 18:17:27,636 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 301 flow. Second operand 6 states and 190 transitions. [2024-06-27 18:17:27,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 124 transitions, 755 flow [2024-06-27 18:17:27,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 747 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:17:27,648 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 511 flow [2024-06-27 18:17:27,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=511, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-27 18:17:27,650 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-27 18:17:27,653 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 511 flow [2024-06-27 18:17:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:27,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:27,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:27,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:17:27,654 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 18:17:27,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -48802076, now seen corresponding path program 1 times [2024-06-27 18:17:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:27,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779589471] [2024-06-27 18:17:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:28,981 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 18:17:28,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779589471] [2024-06-27 18:17:28,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779589471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:28,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:28,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:28,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673171005] [2024-06-27 18:17:28,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:28,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:28,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:28,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:28,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:29,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:17:29,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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 18:17:29,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:29,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:17:29,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:29,814 INFO L124 PetriNetUnfolderBase]: 3359/5209 cut-off events. [2024-06-27 18:17:29,815 INFO L125 PetriNetUnfolderBase]: For 11342/11348 co-relation queries the response was YES. [2024-06-27 18:17:29,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16797 conditions, 5209 events. 3359/5209 cut-off events. For 11342/11348 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30803 event pairs, 917 based on Foata normal form. 14/5150 useless extension candidates. Maximal degree in co-relation 16772. Up to 4594 conditions per place. [2024-06-27 18:17:29,844 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 85 selfloop transitions, 36 changer transitions 0/134 dead transitions. [2024-06-27 18:17:29,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 134 transitions, 951 flow [2024-06-27 18:17:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-27 18:17:29,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2024-06-27 18:17:29,846 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 511 flow. Second operand 7 states and 216 transitions. [2024-06-27 18:17:29,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 134 transitions, 951 flow [2024-06-27 18:17:29,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 134 transitions, 917 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-27 18:17:29,855 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 581 flow [2024-06-27 18:17:29,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-06-27 18:17:29,857 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-27 18:17:29,858 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 581 flow [2024-06-27 18:17:29,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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 18:17:29,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:29,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:29,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:17:29,858 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 18:17:29,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1031306261, now seen corresponding path program 1 times [2024-06-27 18:17:29,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:29,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653226729] [2024-06-27 18:17:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:29,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:30,332 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 18:17:30,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:30,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653226729] [2024-06-27 18:17:30,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653226729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:30,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:30,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:17:30,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52969236] [2024-06-27 18:17:30,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:30,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:17:30,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:30,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:17:30,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:17:30,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:30,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 581 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:30,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:30,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:30,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:31,107 INFO L124 PetriNetUnfolderBase]: 3905/6552 cut-off events. [2024-06-27 18:17:31,107 INFO L125 PetriNetUnfolderBase]: For 14333/14333 co-relation queries the response was YES. [2024-06-27 18:17:31,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19848 conditions, 6552 events. 3905/6552 cut-off events. For 14333/14333 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 42892 event pairs, 1648 based on Foata normal form. 2/6327 useless extension candidates. Maximal degree in co-relation 19819. Up to 5591 conditions per place. [2024-06-27 18:17:31,146 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 74 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2024-06-27 18:17:31,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 99 transitions, 797 flow [2024-06-27 18:17:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:17:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:17:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 18:17:31,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-06-27 18:17:31,147 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 581 flow. Second operand 5 states and 128 transitions. [2024-06-27 18:17:31,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 99 transitions, 797 flow [2024-06-27 18:17:31,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 707 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:31,157 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 531 flow [2024-06-27 18:17:31,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=531, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-06-27 18:17:31,158 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-27 18:17:31,159 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 531 flow [2024-06-27 18:17:31,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:31,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:31,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:31,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:17:31,159 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 18:17:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1906615604, now seen corresponding path program 1 times [2024-06-27 18:17:31,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590309177] [2024-06-27 18:17:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:31,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:31,719 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 18:17:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590309177] [2024-06-27 18:17:31,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590309177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:31,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:31,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:31,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038747484] [2024-06-27 18:17:31,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:31,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:31,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:31,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:31,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 531 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:31,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:31,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:31,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:32,635 INFO L124 PetriNetUnfolderBase]: 4580/7652 cut-off events. [2024-06-27 18:17:32,635 INFO L125 PetriNetUnfolderBase]: For 16656/16656 co-relation queries the response was YES. [2024-06-27 18:17:32,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22519 conditions, 7652 events. 4580/7652 cut-off events. For 16656/16656 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 50580 event pairs, 1976 based on Foata normal form. 2/7436 useless extension candidates. Maximal degree in co-relation 22488. Up to 6523 conditions per place. [2024-06-27 18:17:32,683 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 83 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-06-27 18:17:32,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 813 flow [2024-06-27 18:17:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 18:17:32,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-06-27 18:17:32,686 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 531 flow. Second operand 6 states and 148 transitions. [2024-06-27 18:17:32,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 813 flow [2024-06-27 18:17:32,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 774 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:32,699 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 561 flow [2024-06-27 18:17:32,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2024-06-27 18:17:32,701 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-27 18:17:32,701 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 561 flow [2024-06-27 18:17:32,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:32,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:32,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:32,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:17:32,702 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 18:17:32,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1532912995, now seen corresponding path program 1 times [2024-06-27 18:17:32,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:32,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276637792] [2024-06-27 18:17:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:33,372 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 18:17:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276637792] [2024-06-27 18:17:33,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276637792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:33,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:33,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:33,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148233737] [2024-06-27 18:17:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:33,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:33,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:33,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 85 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 18:17:33,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:33,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:33,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:34,138 INFO L124 PetriNetUnfolderBase]: 4347/7257 cut-off events. [2024-06-27 18:17:34,138 INFO L125 PetriNetUnfolderBase]: For 20226/20235 co-relation queries the response was YES. [2024-06-27 18:17:34,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22771 conditions, 7257 events. 4347/7257 cut-off events. For 20226/20235 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 47593 event pairs, 1601 based on Foata normal form. 10/7050 useless extension candidates. Maximal degree in co-relation 22740. Up to 6102 conditions per place. [2024-06-27 18:17:34,235 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 85 selfloop transitions, 21 changer transitions 0/118 dead transitions. [2024-06-27 18:17:34,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 118 transitions, 911 flow [2024-06-27 18:17:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 18:17:34,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 18:17:34,238 INFO L175 Difference]: Start difference. First operand has 80 places, 85 transitions, 561 flow. Second operand 6 states and 161 transitions. [2024-06-27 18:17:34,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 118 transitions, 911 flow [2024-06-27 18:17:34,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 118 transitions, 870 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:34,253 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 606 flow [2024-06-27 18:17:34,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-06-27 18:17:34,254 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-27 18:17:34,254 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 606 flow [2024-06-27 18:17:34,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 18:17:34,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:34,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:34,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:17:34,258 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 18:17:34,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:34,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1052819419, now seen corresponding path program 2 times [2024-06-27 18:17:34,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:34,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978307280] [2024-06-27 18:17:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:34,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:34,804 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 18:17:34,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978307280] [2024-06-27 18:17:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978307280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:34,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:34,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:34,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031456877] [2024-06-27 18:17:34,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:34,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:34,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:34,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:34,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 606 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 18:17:34,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:34,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:34,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:35,691 INFO L124 PetriNetUnfolderBase]: 4341/7381 cut-off events. [2024-06-27 18:17:35,691 INFO L125 PetriNetUnfolderBase]: For 22419/22419 co-relation queries the response was YES. [2024-06-27 18:17:35,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23221 conditions, 7381 events. 4341/7381 cut-off events. For 22419/22419 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 49774 event pairs, 1811 based on Foata normal form. 2/7155 useless extension candidates. Maximal degree in co-relation 23189. Up to 6204 conditions per place. [2024-06-27 18:17:35,727 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 86 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-27 18:17:35,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 111 transitions, 862 flow [2024-06-27 18:17:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 18:17:35,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2024-06-27 18:17:35,729 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 606 flow. Second operand 6 states and 151 transitions. [2024-06-27 18:17:35,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 111 transitions, 862 flow [2024-06-27 18:17:35,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 111 transitions, 829 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:35,743 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 607 flow [2024-06-27 18:17:35,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=607, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2024-06-27 18:17:35,745 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-27 18:17:35,745 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 607 flow [2024-06-27 18:17:35,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 18:17:35,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:35,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:35,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:17:35,746 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 18:17:35,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1024459596, now seen corresponding path program 1 times [2024-06-27 18:17:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:35,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923613377] [2024-06-27 18:17:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:36,371 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 18:17:36,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:36,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923613377] [2024-06-27 18:17:36,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923613377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:36,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:36,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:36,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625795506] [2024-06-27 18:17:36,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:36,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:36,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:36,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:36,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 607 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:36,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:36,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:36,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:37,422 INFO L124 PetriNetUnfolderBase]: 4573/7612 cut-off events. [2024-06-27 18:17:37,422 INFO L125 PetriNetUnfolderBase]: For 24613/24613 co-relation queries the response was YES. [2024-06-27 18:17:37,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24103 conditions, 7612 events. 4573/7612 cut-off events. For 24613/24613 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 50044 event pairs, 1887 based on Foata normal form. 4/7397 useless extension candidates. Maximal degree in co-relation 24070. Up to 6475 conditions per place. [2024-06-27 18:17:37,466 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 95 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-27 18:17:37,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 125 transitions, 947 flow [2024-06-27 18:17:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:17:37,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043731778425656 [2024-06-27 18:17:37,468 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 607 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:17:37,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 125 transitions, 947 flow [2024-06-27 18:17:37,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 125 transitions, 891 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:37,484 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 629 flow [2024-06-27 18:17:37,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-06-27 18:17:37,484 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-06-27 18:17:37,484 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 629 flow [2024-06-27 18:17:37,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:37,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:37,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:37,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:17:37,485 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 18:17:37,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash -275661444, now seen corresponding path program 1 times [2024-06-27 18:17:37,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:37,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623447238] [2024-06-27 18:17:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:38,202 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 18:17:38,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623447238] [2024-06-27 18:17:38,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623447238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:38,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:38,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:38,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605815721] [2024-06-27 18:17:38,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:38,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:38,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:38,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:38,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:38,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:38,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 629 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:38,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:38,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:38,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:39,176 INFO L124 PetriNetUnfolderBase]: 4629/7605 cut-off events. [2024-06-27 18:17:39,177 INFO L125 PetriNetUnfolderBase]: For 28767/28776 co-relation queries the response was YES. [2024-06-27 18:17:39,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25370 conditions, 7605 events. 4629/7605 cut-off events. For 28767/28776 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 49034 event pairs, 1648 based on Foata normal form. 6/7394 useless extension candidates. Maximal degree in co-relation 25337. Up to 6379 conditions per place. [2024-06-27 18:17:39,220 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 102 selfloop transitions, 29 changer transitions 0/141 dead transitions. [2024-06-27 18:17:39,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 141 transitions, 1114 flow [2024-06-27 18:17:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:17:39,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2024-06-27 18:17:39,221 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 629 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:17:39,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 141 transitions, 1114 flow [2024-06-27 18:17:39,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 141 transitions, 1057 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:39,241 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 743 flow [2024-06-27 18:17:39,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=743, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2024-06-27 18:17:39,242 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-06-27 18:17:39,242 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 743 flow [2024-06-27 18:17:39,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:39,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:39,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:39,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:17:39,243 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 18:17:39,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:39,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1742625044, now seen corresponding path program 2 times [2024-06-27 18:17:39,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:39,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875493767] [2024-06-27 18:17:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:39,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:39,865 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 18:17:39,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:39,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875493767] [2024-06-27 18:17:39,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875493767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:39,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:39,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988822366] [2024-06-27 18:17:39,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:39,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:39,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:39,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:39,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 743 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:39,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:39,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:39,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:40,858 INFO L124 PetriNetUnfolderBase]: 4652/7786 cut-off events. [2024-06-27 18:17:40,858 INFO L125 PetriNetUnfolderBase]: For 35257/35257 co-relation queries the response was YES. [2024-06-27 18:17:40,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27376 conditions, 7786 events. 4652/7786 cut-off events. For 35257/35257 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 51703 event pairs, 1863 based on Foata normal form. 2/7567 useless extension candidates. Maximal degree in co-relation 27341. Up to 6614 conditions per place. [2024-06-27 18:17:40,905 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 107 selfloop transitions, 17 changer transitions 0/134 dead transitions. [2024-06-27 18:17:40,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 134 transitions, 1095 flow [2024-06-27 18:17:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:17:40,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271137026239065 [2024-06-27 18:17:40,907 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 743 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:17:40,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 134 transitions, 1095 flow [2024-06-27 18:17:40,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 134 transitions, 1067 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:40,929 INFO L231 Difference]: Finished difference. Result has 94 places, 105 transitions, 793 flow [2024-06-27 18:17:40,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=793, PETRI_PLACES=94, PETRI_TRANSITIONS=105} [2024-06-27 18:17:40,930 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 39 predicate places. [2024-06-27 18:17:40,930 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 105 transitions, 793 flow [2024-06-27 18:17:40,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:40,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:40,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:40,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:17:40,931 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 18:17:40,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 560149086, now seen corresponding path program 3 times [2024-06-27 18:17:40,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:40,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056483083] [2024-06-27 18:17:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:40,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:41,624 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 18:17:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:41,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056483083] [2024-06-27 18:17:41,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056483083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:41,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168768020] [2024-06-27 18:17:41,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:41,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:41,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:41,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:41,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:41,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 793 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:41,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:41,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:41,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:42,520 INFO L124 PetriNetUnfolderBase]: 4647/7778 cut-off events. [2024-06-27 18:17:42,521 INFO L125 PetriNetUnfolderBase]: For 39449/39449 co-relation queries the response was YES. [2024-06-27 18:17:42,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27899 conditions, 7778 events. 4647/7778 cut-off events. For 39449/39449 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 51633 event pairs, 1861 based on Foata normal form. 2/7559 useless extension candidates. Maximal degree in co-relation 27861. Up to 6575 conditions per place. [2024-06-27 18:17:42,567 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 107 selfloop transitions, 22 changer transitions 0/139 dead transitions. [2024-06-27 18:17:42,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1171 flow [2024-06-27 18:17:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:17:42,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-06-27 18:17:42,582 INFO L175 Difference]: Start difference. First operand has 94 places, 105 transitions, 793 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:17:42,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1171 flow [2024-06-27 18:17:42,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 1109 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:42,611 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 825 flow [2024-06-27 18:17:42,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=825, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2024-06-27 18:17:42,612 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-27 18:17:42,612 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 825 flow [2024-06-27 18:17:42,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:42,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:42,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:17:42,613 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 18:17:42,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1055262945, now seen corresponding path program 1 times [2024-06-27 18:17:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193268725] [2024-06-27 18:17:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:43,059 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 18:17:43,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:43,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193268725] [2024-06-27 18:17:43,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193268725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:43,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:43,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:17:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772177961] [2024-06-27 18:17:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:43,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:17:43,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:17:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:17:43,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:17:43,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 825 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 18:17:43,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:43,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:17:43,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:44,043 INFO L124 PetriNetUnfolderBase]: 5913/9702 cut-off events. [2024-06-27 18:17:44,043 INFO L125 PetriNetUnfolderBase]: For 56719/56731 co-relation queries the response was YES. [2024-06-27 18:17:44,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35115 conditions, 9702 events. 5913/9702 cut-off events. For 56719/56731 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 64498 event pairs, 2501 based on Foata normal form. 1/9403 useless extension candidates. Maximal degree in co-relation 35077. Up to 8400 conditions per place. [2024-06-27 18:17:44,102 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 100 selfloop transitions, 11 changer transitions 0/126 dead transitions. [2024-06-27 18:17:44,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 1115 flow [2024-06-27 18:17:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:17:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:17:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-27 18:17:44,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-06-27 18:17:44,104 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 825 flow. Second operand 5 states and 116 transitions. [2024-06-27 18:17:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 1115 flow [2024-06-27 18:17:44,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 1047 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:44,132 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 820 flow [2024-06-27 18:17:44,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=820, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-06-27 18:17:44,132 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-27 18:17:44,132 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 820 flow [2024-06-27 18:17:44,133 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 18:17:44,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:44,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:17:44,133 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 18:17:44,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:44,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1026253434, now seen corresponding path program 1 times [2024-06-27 18:17:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:44,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841131024] [2024-06-27 18:17:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:44,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:45,014 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 18:17:45,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:45,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841131024] [2024-06-27 18:17:45,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841131024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:45,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:45,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:45,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252679952] [2024-06-27 18:17:45,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:45,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:45,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:45,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:45,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:45,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:45,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 820 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:45,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:45,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:45,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:46,087 INFO L124 PetriNetUnfolderBase]: 4646/7677 cut-off events. [2024-06-27 18:17:46,088 INFO L125 PetriNetUnfolderBase]: For 55609/55621 co-relation queries the response was YES. [2024-06-27 18:17:46,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30109 conditions, 7677 events. 4646/7677 cut-off events. For 55609/55621 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 50421 event pairs, 1556 based on Foata normal form. 6/7451 useless extension candidates. Maximal degree in co-relation 30070. Up to 6371 conditions per place. [2024-06-27 18:17:46,135 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 119 selfloop transitions, 28 changer transitions 0/165 dead transitions. [2024-06-27 18:17:46,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 165 transitions, 1296 flow [2024-06-27 18:17:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:17:46,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433673469387755 [2024-06-27 18:17:46,137 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 820 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:17:46,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 165 transitions, 1296 flow [2024-06-27 18:17:46,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 165 transitions, 1259 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:46,175 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 915 flow [2024-06-27 18:17:46,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=915, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2024-06-27 18:17:46,176 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-27 18:17:46,176 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 915 flow [2024-06-27 18:17:46,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:46,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:46,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:46,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:17:46,176 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 18:17:46,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:46,177 INFO L85 PathProgramCache]: Analyzing trace with hash 833244145, now seen corresponding path program 1 times [2024-06-27 18:17:46,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:46,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500428494] [2024-06-27 18:17:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:46,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:46,925 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 18:17:46,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:46,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500428494] [2024-06-27 18:17:46,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500428494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:46,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:46,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:46,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135692182] [2024-06-27 18:17:46,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:46,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:46,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:46,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:47,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:47,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 915 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:17:47,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:47,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:47,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:47,812 INFO L124 PetriNetUnfolderBase]: 4942/8018 cut-off events. [2024-06-27 18:17:47,812 INFO L125 PetriNetUnfolderBase]: For 63130/63136 co-relation queries the response was YES. [2024-06-27 18:17:47,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32829 conditions, 8018 events. 4942/8018 cut-off events. For 63130/63136 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 51512 event pairs, 1672 based on Foata normal form. 3/7785 useless extension candidates. Maximal degree in co-relation 32788. Up to 6739 conditions per place. [2024-06-27 18:17:47,866 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 114 selfloop transitions, 39 changer transitions 0/164 dead transitions. [2024-06-27 18:17:47,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 164 transitions, 1519 flow [2024-06-27 18:17:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 18:17:47,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-27 18:17:47,867 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 915 flow. Second operand 7 states and 184 transitions. [2024-06-27 18:17:47,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 164 transitions, 1519 flow [2024-06-27 18:17:47,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 164 transitions, 1453 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:47,901 INFO L231 Difference]: Finished difference. Result has 104 places, 124 transitions, 1008 flow [2024-06-27 18:17:47,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1008, PETRI_PLACES=104, PETRI_TRANSITIONS=124} [2024-06-27 18:17:47,902 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 49 predicate places. [2024-06-27 18:17:47,902 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 124 transitions, 1008 flow [2024-06-27 18:17:47,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:17:47,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:47,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:47,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:17:47,902 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 18:17:47,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1022443999, now seen corresponding path program 2 times [2024-06-27 18:17:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:47,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363635234] [2024-06-27 18:17:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:48,678 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 18:17:48,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363635234] [2024-06-27 18:17:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363635234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:48,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443880328] [2024-06-27 18:17:48,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:48,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:48,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:48,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 124 transitions, 1008 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:17:48,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:48,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:48,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:49,663 INFO L124 PetriNetUnfolderBase]: 4937/8011 cut-off events. [2024-06-27 18:17:49,663 INFO L125 PetriNetUnfolderBase]: For 67736/67742 co-relation queries the response was YES. [2024-06-27 18:17:49,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33141 conditions, 8011 events. 4937/8011 cut-off events. For 67736/67742 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 51489 event pairs, 1672 based on Foata normal form. 3/7778 useless extension candidates. Maximal degree in co-relation 33099. Up to 6734 conditions per place. [2024-06-27 18:17:49,718 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 112 selfloop transitions, 42 changer transitions 0/165 dead transitions. [2024-06-27 18:17:49,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 165 transitions, 1492 flow [2024-06-27 18:17:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 18:17:49,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422740524781341 [2024-06-27 18:17:49,720 INFO L175 Difference]: Start difference. First operand has 104 places, 124 transitions, 1008 flow. Second operand 7 states and 186 transitions. [2024-06-27 18:17:49,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 165 transitions, 1492 flow [2024-06-27 18:17:49,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1405 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:49,772 INFO L231 Difference]: Finished difference. Result has 108 places, 124 transitions, 1013 flow [2024-06-27 18:17:49,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1013, PETRI_PLACES=108, PETRI_TRANSITIONS=124} [2024-06-27 18:17:49,773 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-27 18:17:49,773 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 124 transitions, 1013 flow [2024-06-27 18:17:49,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:17:49,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:49,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:49,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:17:49,774 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 18:17:49,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:49,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1022438202, now seen corresponding path program 1 times [2024-06-27 18:17:49,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:49,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080003880] [2024-06-27 18:17:49,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:49,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:50,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:50,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080003880] [2024-06-27 18:17:50,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080003880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:50,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:50,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:50,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903006219] [2024-06-27 18:17:50,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:50,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:50,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:50,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:50,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:50,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:50,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 124 transitions, 1013 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:17:50,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:50,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:50,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:51,562 INFO L124 PetriNetUnfolderBase]: 5064/7944 cut-off events. [2024-06-27 18:17:51,563 INFO L125 PetriNetUnfolderBase]: For 75387/75393 co-relation queries the response was YES. [2024-06-27 18:17:51,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34183 conditions, 7944 events. 5064/7944 cut-off events. For 75387/75393 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49413 event pairs, 1492 based on Foata normal form. 9/7809 useless extension candidates. Maximal degree in co-relation 34140. Up to 6661 conditions per place. [2024-06-27 18:17:51,618 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 129 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-27 18:17:51,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 184 transitions, 1659 flow [2024-06-27 18:17:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 18:17:51,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 18:17:51,620 INFO L175 Difference]: Start difference. First operand has 108 places, 124 transitions, 1013 flow. Second operand 8 states and 212 transitions. [2024-06-27 18:17:51,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 184 transitions, 1659 flow [2024-06-27 18:17:51,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 184 transitions, 1554 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:51,673 INFO L231 Difference]: Finished difference. Result has 111 places, 135 transitions, 1123 flow [2024-06-27 18:17:51,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1123, PETRI_PLACES=111, PETRI_TRANSITIONS=135} [2024-06-27 18:17:51,673 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-27 18:17:51,674 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 135 transitions, 1123 flow [2024-06-27 18:17:51,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:17:51,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:51,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:51,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:17:51,674 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 18:17:51,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1813199660, now seen corresponding path program 2 times [2024-06-27 18:17:51,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:51,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729643691] [2024-06-27 18:17:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:51,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:52,361 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 18:17:52,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:52,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729643691] [2024-06-27 18:17:52,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729643691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:52,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:52,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:52,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867716071] [2024-06-27 18:17:52,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:52,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:52,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 135 transitions, 1123 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:17:52,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:52,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:52,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:53,471 INFO L124 PetriNetUnfolderBase]: 5202/8225 cut-off events. [2024-06-27 18:17:53,471 INFO L125 PetriNetUnfolderBase]: For 88134/88134 co-relation queries the response was YES. [2024-06-27 18:17:53,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37515 conditions, 8225 events. 5202/8225 cut-off events. For 88134/88134 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 52014 event pairs, 1803 based on Foata normal form. 4/8078 useless extension candidates. Maximal degree in co-relation 37470. Up to 7235 conditions per place. [2024-06-27 18:17:53,527 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 145 selfloop transitions, 26 changer transitions 0/182 dead transitions. [2024-06-27 18:17:53,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 182 transitions, 1729 flow [2024-06-27 18:17:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:17:53,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-06-27 18:17:53,528 INFO L175 Difference]: Start difference. First operand has 111 places, 135 transitions, 1123 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:17:53,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 182 transitions, 1729 flow [2024-06-27 18:17:53,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 182 transitions, 1684 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:53,602 INFO L231 Difference]: Finished difference. Result has 116 places, 141 transitions, 1224 flow [2024-06-27 18:17:53,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1224, PETRI_PLACES=116, PETRI_TRANSITIONS=141} [2024-06-27 18:17:53,602 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-27 18:17:53,603 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 141 transitions, 1224 flow [2024-06-27 18:17:53,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:17:53,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:53,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:53,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:17:53,603 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 18:17:53,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash 957892789, now seen corresponding path program 3 times [2024-06-27 18:17:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:53,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000031313] [2024-06-27 18:17:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:53,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:54,219 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 18:17:54,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:54,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000031313] [2024-06-27 18:17:54,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000031313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:54,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455989229] [2024-06-27 18:17:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:54,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:54,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:54,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:54,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 141 transitions, 1224 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:17:54,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:54,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:54,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:55,199 INFO L124 PetriNetUnfolderBase]: 5197/8222 cut-off events. [2024-06-27 18:17:55,199 INFO L125 PetriNetUnfolderBase]: For 95789/95795 co-relation queries the response was YES. [2024-06-27 18:17:55,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37980 conditions, 8222 events. 5197/8222 cut-off events. For 95789/95795 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 52032 event pairs, 1811 based on Foata normal form. 6/8075 useless extension candidates. Maximal degree in co-relation 37932. Up to 7296 conditions per place. [2024-06-27 18:17:55,260 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 142 selfloop transitions, 19 changer transitions 0/172 dead transitions. [2024-06-27 18:17:55,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 172 transitions, 1634 flow [2024-06-27 18:17:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:17:55,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-27 18:17:55,261 INFO L175 Difference]: Start difference. First operand has 116 places, 141 transitions, 1224 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:17:55,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 172 transitions, 1634 flow [2024-06-27 18:17:55,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 172 transitions, 1548 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:55,345 INFO L231 Difference]: Finished difference. Result has 119 places, 141 transitions, 1184 flow [2024-06-27 18:17:55,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1184, PETRI_PLACES=119, PETRI_TRANSITIONS=141} [2024-06-27 18:17:55,346 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-27 18:17:55,346 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 141 transitions, 1184 flow [2024-06-27 18:17:55,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:17:55,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:55,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:55,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:17:55,346 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:55,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:55,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1804954280, now seen corresponding path program 3 times [2024-06-27 18:17:55,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:55,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458427323] [2024-06-27 18:17:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:55,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458427323] [2024-06-27 18:17:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458427323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813317180] [2024-06-27 18:17:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:56,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:56,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:56,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:56,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 141 transitions, 1184 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:17:56,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:56,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:56,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:57,255 INFO L124 PetriNetUnfolderBase]: 5187/8200 cut-off events. [2024-06-27 18:17:57,255 INFO L125 PetriNetUnfolderBase]: For 99538/99538 co-relation queries the response was YES. [2024-06-27 18:17:57,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37915 conditions, 8200 events. 5187/8200 cut-off events. For 99538/99538 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 51877 event pairs, 1799 based on Foata normal form. 4/8054 useless extension candidates. Maximal degree in co-relation 37866. Up to 7148 conditions per place. [2024-06-27 18:17:57,302 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 143 selfloop transitions, 33 changer transitions 0/187 dead transitions. [2024-06-27 18:17:57,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 187 transitions, 1786 flow [2024-06-27 18:17:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:17:57,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-27 18:17:57,304 INFO L175 Difference]: Start difference. First operand has 119 places, 141 transitions, 1184 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:17:57,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 187 transitions, 1786 flow [2024-06-27 18:17:57,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 187 transitions, 1715 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:57,361 INFO L231 Difference]: Finished difference. Result has 120 places, 144 transitions, 1239 flow [2024-06-27 18:17:57,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1239, PETRI_PLACES=120, PETRI_TRANSITIONS=144} [2024-06-27 18:17:57,362 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-27 18:17:57,362 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 144 transitions, 1239 flow [2024-06-27 18:17:57,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:17:57,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:57,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:17:57,363 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 18:17:57,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:57,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1068792902, now seen corresponding path program 4 times [2024-06-27 18:17:57,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:57,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852376484] [2024-06-27 18:17:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:57,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:57,990 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 18:17:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852376484] [2024-06-27 18:17:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852376484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:57,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:57,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:57,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039566598] [2024-06-27 18:17:57,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:57,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:57,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:58,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:58,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 144 transitions, 1239 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:17:58,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:58,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:58,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:59,228 INFO L124 PetriNetUnfolderBase]: 5177/8196 cut-off events. [2024-06-27 18:17:59,229 INFO L125 PetriNetUnfolderBase]: For 107452/107452 co-relation queries the response was YES. [2024-06-27 18:17:59,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38493 conditions, 8196 events. 5177/8196 cut-off events. For 107452/107452 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 51986 event pairs, 1805 based on Foata normal form. 4/8047 useless extension candidates. Maximal degree in co-relation 38443. Up to 7255 conditions per place. [2024-06-27 18:17:59,284 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 148 selfloop transitions, 21 changer transitions 0/180 dead transitions. [2024-06-27 18:17:59,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 180 transitions, 1671 flow [2024-06-27 18:17:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:17:59,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-06-27 18:17:59,285 INFO L175 Difference]: Start difference. First operand has 120 places, 144 transitions, 1239 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:17:59,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 180 transitions, 1671 flow [2024-06-27 18:17:59,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 180 transitions, 1551 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:59,354 INFO L231 Difference]: Finished difference. Result has 122 places, 144 transitions, 1169 flow [2024-06-27 18:17:59,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1169, PETRI_PLACES=122, PETRI_TRANSITIONS=144} [2024-06-27 18:17:59,354 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 67 predicate places. [2024-06-27 18:17:59,354 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 144 transitions, 1169 flow [2024-06-27 18:17:59,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:17:59,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:59,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:59,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:17:59,355 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:59,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:59,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1646586010, now seen corresponding path program 1 times [2024-06-27 18:17:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:59,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901330843] [2024-06-27 18:17:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:59,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:59,925 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 18:17:59,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:59,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901330843] [2024-06-27 18:17:59,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901330843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:59,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:59,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751739614] [2024-06-27 18:17:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:59,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:59,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:17:59,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 144 transitions, 1169 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 18:17:59,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:59,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:17:59,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:01,129 INFO L124 PetriNetUnfolderBase]: 6271/9590 cut-off events. [2024-06-27 18:18:01,129 INFO L125 PetriNetUnfolderBase]: For 127254/127272 co-relation queries the response was YES. [2024-06-27 18:18:01,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44143 conditions, 9590 events. 6271/9590 cut-off events. For 127254/127272 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 58083 event pairs, 2370 based on Foata normal form. 9/9451 useless extension candidates. Maximal degree in co-relation 44092. Up to 8851 conditions per place. [2024-06-27 18:18:01,195 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 138 selfloop transitions, 14 changer transitions 0/169 dead transitions. [2024-06-27 18:18:01,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 169 transitions, 1569 flow [2024-06-27 18:18:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:18:01,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-27 18:18:01,197 INFO L175 Difference]: Start difference. First operand has 122 places, 144 transitions, 1169 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:18:01,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 169 transitions, 1569 flow [2024-06-27 18:18:01,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 169 transitions, 1514 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:01,304 INFO L231 Difference]: Finished difference. Result has 121 places, 147 transitions, 1186 flow [2024-06-27 18:18:01,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1186, PETRI_PLACES=121, PETRI_TRANSITIONS=147} [2024-06-27 18:18:01,305 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-27 18:18:01,305 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 147 transitions, 1186 flow [2024-06-27 18:18:01,305 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 18:18:01,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:01,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:01,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:18:01,305 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 18:18:01,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:01,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1259029503, now seen corresponding path program 1 times [2024-06-27 18:18:01,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:01,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32623830] [2024-06-27 18:18:01,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:01,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:02,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:02,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32623830] [2024-06-27 18:18:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32623830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:02,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:02,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826018154] [2024-06-27 18:18:02,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:02,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:02,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:02,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:02,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 147 transitions, 1186 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 18:18:02,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:02,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:02,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:03,357 INFO L124 PetriNetUnfolderBase]: 4893/7543 cut-off events. [2024-06-27 18:18:03,357 INFO L125 PetriNetUnfolderBase]: For 117561/117573 co-relation queries the response was YES. [2024-06-27 18:18:03,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37752 conditions, 7543 events. 4893/7543 cut-off events. For 117561/117573 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 45772 event pairs, 882 based on Foata normal form. 12/7506 useless extension candidates. Maximal degree in co-relation 37700. Up to 6475 conditions per place. [2024-06-27 18:18:03,413 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 141 selfloop transitions, 46 changer transitions 0/207 dead transitions. [2024-06-27 18:18:03,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 207 transitions, 1908 flow [2024-06-27 18:18:03,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 18:18:03,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:18:03,414 INFO L175 Difference]: Start difference. First operand has 121 places, 147 transitions, 1186 flow. Second operand 8 states and 216 transitions. [2024-06-27 18:18:03,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 207 transitions, 1908 flow [2024-06-27 18:18:03,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 207 transitions, 1860 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:03,524 INFO L231 Difference]: Finished difference. Result has 126 places, 154 transitions, 1349 flow [2024-06-27 18:18:03,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1349, PETRI_PLACES=126, PETRI_TRANSITIONS=154} [2024-06-27 18:18:03,524 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2024-06-27 18:18:03,525 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 154 transitions, 1349 flow [2024-06-27 18:18:03,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 18:18:03,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:03,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:03,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:18:03,525 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 18:18:03,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:03,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1259090077, now seen corresponding path program 1 times [2024-06-27 18:18:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:03,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368029645] [2024-06-27 18:18:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:03,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:04,365 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 18:18:04,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:04,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368029645] [2024-06-27 18:18:04,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368029645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:04,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:04,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:04,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325154104] [2024-06-27 18:18:04,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:04,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:04,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:04,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:04,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:04,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:04,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 154 transitions, 1349 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:04,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:04,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:04,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:05,448 INFO L124 PetriNetUnfolderBase]: 5198/7891 cut-off events. [2024-06-27 18:18:05,449 INFO L125 PetriNetUnfolderBase]: For 127122/127132 co-relation queries the response was YES. [2024-06-27 18:18:05,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40403 conditions, 7891 events. 5198/7891 cut-off events. For 127122/127132 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 46899 event pairs, 1252 based on Foata normal form. 7/7846 useless extension candidates. Maximal degree in co-relation 40349. Up to 6871 conditions per place. [2024-06-27 18:18:05,507 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 143 selfloop transitions, 67 changer transitions 0/221 dead transitions. [2024-06-27 18:18:05,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 221 transitions, 2217 flow [2024-06-27 18:18:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 18:18:05,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382653061224489 [2024-06-27 18:18:05,508 INFO L175 Difference]: Start difference. First operand has 126 places, 154 transitions, 1349 flow. Second operand 8 states and 211 transitions. [2024-06-27 18:18:05,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 221 transitions, 2217 flow [2024-06-27 18:18:05,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 221 transitions, 2121 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:05,639 INFO L231 Difference]: Finished difference. Result has 133 places, 169 transitions, 1623 flow [2024-06-27 18:18:05,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1623, PETRI_PLACES=133, PETRI_TRANSITIONS=169} [2024-06-27 18:18:05,640 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2024-06-27 18:18:05,640 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 169 transitions, 1623 flow [2024-06-27 18:18:05,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:05,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:05,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:05,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:18:05,641 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 18:18:05,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:05,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1259089953, now seen corresponding path program 2 times [2024-06-27 18:18:05,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:05,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637296921] [2024-06-27 18:18:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:05,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:06,517 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 18:18:06,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:06,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637296921] [2024-06-27 18:18:06,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637296921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:06,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:06,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:06,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124507570] [2024-06-27 18:18:06,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:06,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:06,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:06,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:06,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:06,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:06,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 169 transitions, 1623 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 18:18:06,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:06,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:06,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:07,708 INFO L124 PetriNetUnfolderBase]: 4993/7683 cut-off events. [2024-06-27 18:18:07,708 INFO L125 PetriNetUnfolderBase]: For 138562/138574 co-relation queries the response was YES. [2024-06-27 18:18:07,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41173 conditions, 7683 events. 4993/7683 cut-off events. For 138562/138574 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 46565 event pairs, 1173 based on Foata normal form. 12/7646 useless extension candidates. Maximal degree in co-relation 41115. Up to 6725 conditions per place. [2024-06-27 18:18:07,771 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 149 selfloop transitions, 49 changer transitions 0/221 dead transitions. [2024-06-27 18:18:07,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 221 transitions, 2207 flow [2024-06-27 18:18:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:18:07,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433673469387755 [2024-06-27 18:18:07,773 INFO L175 Difference]: Start difference. First operand has 133 places, 169 transitions, 1623 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:18:07,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 221 transitions, 2207 flow [2024-06-27 18:18:07,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 221 transitions, 2138 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-27 18:18:07,882 INFO L231 Difference]: Finished difference. Result has 139 places, 171 transitions, 1688 flow [2024-06-27 18:18:07,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1688, PETRI_PLACES=139, PETRI_TRANSITIONS=171} [2024-06-27 18:18:07,883 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-06-27 18:18:07,883 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 171 transitions, 1688 flow [2024-06-27 18:18:07,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 18:18:07,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:07,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:07,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:18:07,884 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 18:18:07,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1746283077, now seen corresponding path program 2 times [2024-06-27 18:18:07,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:07,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084795018] [2024-06-27 18:18:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:07,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:08,890 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 18:18:08,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:08,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084795018] [2024-06-27 18:18:08,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084795018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:08,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:08,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:08,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985271398] [2024-06-27 18:18:08,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:08,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:08,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:09,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:09,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 171 transitions, 1688 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:09,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:09,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:09,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:10,141 INFO L124 PetriNetUnfolderBase]: 5285/8242 cut-off events. [2024-06-27 18:18:10,141 INFO L125 PetriNetUnfolderBase]: For 147055/147065 co-relation queries the response was YES. [2024-06-27 18:18:10,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43249 conditions, 8242 events. 5285/8242 cut-off events. For 147055/147065 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 51017 event pairs, 1461 based on Foata normal form. 7/8110 useless extension candidates. Maximal degree in co-relation 43189. Up to 7196 conditions per place. [2024-06-27 18:18:10,214 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 165 selfloop transitions, 42 changer transitions 0/218 dead transitions. [2024-06-27 18:18:10,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 218 transitions, 2272 flow [2024-06-27 18:18:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:18:10,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 18:18:10,215 INFO L175 Difference]: Start difference. First operand has 139 places, 171 transitions, 1688 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:18:10,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 218 transitions, 2272 flow [2024-06-27 18:18:10,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 218 transitions, 2146 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:10,330 INFO L231 Difference]: Finished difference. Result has 140 places, 174 transitions, 1696 flow [2024-06-27 18:18:10,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1696, PETRI_PLACES=140, PETRI_TRANSITIONS=174} [2024-06-27 18:18:10,331 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-27 18:18:10,331 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 174 transitions, 1696 flow [2024-06-27 18:18:10,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:10,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:10,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:10,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:18:10,331 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 18:18:10,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 56119305, now seen corresponding path program 3 times [2024-06-27 18:18:10,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:10,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178923334] [2024-06-27 18:18:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:10,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:11,269 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 18:18:11,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178923334] [2024-06-27 18:18:11,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178923334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:11,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:11,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788204036] [2024-06-27 18:18:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:11,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:11,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:11,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:11,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:11,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:11,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 174 transitions, 1696 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 18:18:11,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:11,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:11,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:12,459 INFO L124 PetriNetUnfolderBase]: 5005/7703 cut-off events. [2024-06-27 18:18:12,459 INFO L125 PetriNetUnfolderBase]: For 152520/152532 co-relation queries the response was YES. [2024-06-27 18:18:12,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41679 conditions, 7703 events. 5005/7703 cut-off events. For 152520/152532 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 46582 event pairs, 1158 based on Foata normal form. 12/7667 useless extension candidates. Maximal degree in co-relation 41619. Up to 6798 conditions per place. [2024-06-27 18:18:12,525 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 157 selfloop transitions, 43 changer transitions 0/224 dead transitions. [2024-06-27 18:18:12,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 224 transitions, 2285 flow [2024-06-27 18:18:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:12,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 18:18:12,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 18:18:12,526 INFO L175 Difference]: Start difference. First operand has 140 places, 174 transitions, 1696 flow. Second operand 8 states and 210 transitions. [2024-06-27 18:18:12,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 224 transitions, 2285 flow [2024-06-27 18:18:12,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 224 transitions, 2169 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:12,655 INFO L231 Difference]: Finished difference. Result has 144 places, 178 transitions, 1762 flow [2024-06-27 18:18:12,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1762, PETRI_PLACES=144, PETRI_TRANSITIONS=178} [2024-06-27 18:18:12,656 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 89 predicate places. [2024-06-27 18:18:12,656 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 178 transitions, 1762 flow [2024-06-27 18:18:12,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 18:18:12,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:12,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:12,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:18:12,656 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 18:18:12,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1635465207, now seen corresponding path program 3 times [2024-06-27 18:18:12,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:12,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829614421] [2024-06-27 18:18:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:12,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:13,591 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 18:18:13,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829614421] [2024-06-27 18:18:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829614421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:13,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330864110] [2024-06-27 18:18:13,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:13,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:13,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:13,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 178 transitions, 1762 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:13,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:13,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:13,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:14,829 INFO L124 PetriNetUnfolderBase]: 5305/8272 cut-off events. [2024-06-27 18:18:14,829 INFO L125 PetriNetUnfolderBase]: For 163176/163186 co-relation queries the response was YES. [2024-06-27 18:18:14,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44073 conditions, 8272 events. 5305/8272 cut-off events. For 163176/163186 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 51222 event pairs, 1449 based on Foata normal form. 7/8141 useless extension candidates. Maximal degree in co-relation 44010. Up to 7189 conditions per place. [2024-06-27 18:18:14,904 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 174 selfloop transitions, 48 changer transitions 0/233 dead transitions. [2024-06-27 18:18:14,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 233 transitions, 2408 flow [2024-06-27 18:18:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:18:14,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192743764172335 [2024-06-27 18:18:14,905 INFO L175 Difference]: Start difference. First operand has 144 places, 178 transitions, 1762 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:18:14,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 233 transitions, 2408 flow [2024-06-27 18:18:15,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 233 transitions, 2302 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:15,059 INFO L231 Difference]: Finished difference. Result has 148 places, 181 transitions, 1812 flow [2024-06-27 18:18:15,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1812, PETRI_PLACES=148, PETRI_TRANSITIONS=181} [2024-06-27 18:18:15,059 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 93 predicate places. [2024-06-27 18:18:15,059 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 181 transitions, 1812 flow [2024-06-27 18:18:15,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:15,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:15,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:15,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:18:15,060 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:15,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1377177757, now seen corresponding path program 4 times [2024-06-27 18:18:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:15,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94234721] [2024-06-27 18:18:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:15,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:15,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94234721] [2024-06-27 18:18:15,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94234721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:15,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:15,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:15,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034967041] [2024-06-27 18:18:15,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:15,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:15,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:15,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:15,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:16,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 181 transitions, 1812 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:16,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:16,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:17,402 INFO L124 PetriNetUnfolderBase]: 5333/8313 cut-off events. [2024-06-27 18:18:17,402 INFO L125 PetriNetUnfolderBase]: For 170617/170627 co-relation queries the response was YES. [2024-06-27 18:18:17,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44523 conditions, 8313 events. 5333/8313 cut-off events. For 170617/170627 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 51547 event pairs, 1443 based on Foata normal form. 7/8180 useless extension candidates. Maximal degree in co-relation 44459. Up to 7185 conditions per place. [2024-06-27 18:18:17,461 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 184 selfloop transitions, 52 changer transitions 0/247 dead transitions. [2024-06-27 18:18:17,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 247 transitions, 2672 flow [2024-06-27 18:18:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:18:17,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-27 18:18:17,462 INFO L175 Difference]: Start difference. First operand has 148 places, 181 transitions, 1812 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:18:17,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 247 transitions, 2672 flow [2024-06-27 18:18:17,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 247 transitions, 2534 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:17,586 INFO L231 Difference]: Finished difference. Result has 151 places, 187 transitions, 1893 flow [2024-06-27 18:18:17,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1893, PETRI_PLACES=151, PETRI_TRANSITIONS=187} [2024-06-27 18:18:17,587 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-27 18:18:17,587 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 187 transitions, 1893 flow [2024-06-27 18:18:17,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:17,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:17,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:17,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:18:17,588 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 18:18:17,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1377182593, now seen corresponding path program 1 times [2024-06-27 18:18:17,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:17,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045188333] [2024-06-27 18:18:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:17,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:18,319 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 18:18:18,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:18,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045188333] [2024-06-27 18:18:18,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045188333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:18,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:18,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:18,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24228841] [2024-06-27 18:18:18,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:18,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:18,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:18,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:18,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:18,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 187 transitions, 1893 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:18,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:18,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:18,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:19,573 INFO L124 PetriNetUnfolderBase]: 5379/8390 cut-off events. [2024-06-27 18:18:19,573 INFO L125 PetriNetUnfolderBase]: For 171762/171772 co-relation queries the response was YES. [2024-06-27 18:18:19,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44867 conditions, 8390 events. 5379/8390 cut-off events. For 171762/171772 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 52136 event pairs, 1389 based on Foata normal form. 9/8259 useless extension candidates. Maximal degree in co-relation 44802. Up to 7007 conditions per place. [2024-06-27 18:18:19,636 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 172 selfloop transitions, 59 changer transitions 0/242 dead transitions. [2024-06-27 18:18:19,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 242 transitions, 2667 flow [2024-06-27 18:18:19,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 18:18:19,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:18:19,642 INFO L175 Difference]: Start difference. First operand has 151 places, 187 transitions, 1893 flow. Second operand 8 states and 216 transitions. [2024-06-27 18:18:19,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 242 transitions, 2667 flow [2024-06-27 18:18:19,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 242 transitions, 2583 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:19,801 INFO L231 Difference]: Finished difference. Result has 154 places, 190 transitions, 1977 flow [2024-06-27 18:18:19,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1977, PETRI_PLACES=154, PETRI_TRANSITIONS=190} [2024-06-27 18:18:19,802 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-06-27 18:18:19,802 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 190 transitions, 1977 flow [2024-06-27 18:18:19,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:19,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:19,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:19,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:18:19,803 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 18:18:19,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1377355387, now seen corresponding path program 5 times [2024-06-27 18:18:19,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:19,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222647452] [2024-06-27 18:18:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:19,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:20,690 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 18:18:20,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:20,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222647452] [2024-06-27 18:18:20,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222647452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:20,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:20,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:20,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794687782] [2024-06-27 18:18:20,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:20,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:20,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:20,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:20,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:20,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 190 transitions, 1977 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:21,979 INFO L124 PetriNetUnfolderBase]: 5402/8421 cut-off events. [2024-06-27 18:18:21,980 INFO L125 PetriNetUnfolderBase]: For 180337/180347 co-relation queries the response was YES. [2024-06-27 18:18:22,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45791 conditions, 8421 events. 5402/8421 cut-off events. For 180337/180347 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 52327 event pairs, 1461 based on Foata normal form. 7/8285 useless extension candidates. Maximal degree in co-relation 45724. Up to 7358 conditions per place. [2024-06-27 18:18:22,054 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 184 selfloop transitions, 42 changer transitions 0/237 dead transitions. [2024-06-27 18:18:22,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 237 transitions, 2611 flow [2024-06-27 18:18:22,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:18:22,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 18:18:22,055 INFO L175 Difference]: Start difference. First operand has 154 places, 190 transitions, 1977 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:18:22,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 237 transitions, 2611 flow [2024-06-27 18:18:22,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 237 transitions, 2451 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:22,217 INFO L231 Difference]: Finished difference. Result has 156 places, 193 transitions, 1963 flow [2024-06-27 18:18:22,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1963, PETRI_PLACES=156, PETRI_TRANSITIONS=193} [2024-06-27 18:18:22,218 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 101 predicate places. [2024-06-27 18:18:22,218 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 193 transitions, 1963 flow [2024-06-27 18:18:22,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:22,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:22,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:22,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:18:22,218 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 18:18:22,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1630812231, now seen corresponding path program 2 times [2024-06-27 18:18:22,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:22,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274674676] [2024-06-27 18:18:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:22,966 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 18:18:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274674676] [2024-06-27 18:18:22,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274674676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:22,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:22,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:22,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987366821] [2024-06-27 18:18:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:22,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:23,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:23,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 193 transitions, 1963 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:23,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:23,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:23,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:24,195 INFO L124 PetriNetUnfolderBase]: 5504/8557 cut-off events. [2024-06-27 18:18:24,195 INFO L125 PetriNetUnfolderBase]: For 191827/191837 co-relation queries the response was YES. [2024-06-27 18:18:24,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46652 conditions, 8557 events. 5504/8557 cut-off events. For 191827/191837 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 53066 event pairs, 1392 based on Foata normal form. 9/8429 useless extension candidates. Maximal degree in co-relation 46584. Up to 7125 conditions per place. [2024-06-27 18:18:24,272 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 178 selfloop transitions, 61 changer transitions 0/250 dead transitions. [2024-06-27 18:18:24,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 250 transitions, 2911 flow [2024-06-27 18:18:24,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 18:18:24,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-06-27 18:18:24,273 INFO L175 Difference]: Start difference. First operand has 156 places, 193 transitions, 1963 flow. Second operand 8 states and 214 transitions. [2024-06-27 18:18:24,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 250 transitions, 2911 flow [2024-06-27 18:18:24,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 250 transitions, 2801 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:24,433 INFO L231 Difference]: Finished difference. Result has 158 places, 199 transitions, 2060 flow [2024-06-27 18:18:24,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2060, PETRI_PLACES=158, PETRI_TRANSITIONS=199} [2024-06-27 18:18:24,434 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2024-06-27 18:18:24,440 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 199 transitions, 2060 flow [2024-06-27 18:18:24,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:24,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:24,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:24,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:18:24,441 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 18:18:24,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:24,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1377355573, now seen corresponding path program 3 times [2024-06-27 18:18:24,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:24,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040228268] [2024-06-27 18:18:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:24,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:25,190 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 18:18:25,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040228268] [2024-06-27 18:18:25,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040228268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:25,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:25,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:25,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696286666] [2024-06-27 18:18:25,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:25,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:25,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:25,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:25,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:25,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:25,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 199 transitions, 2060 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:25,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:25,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:25,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:26,565 INFO L124 PetriNetUnfolderBase]: 5494/8550 cut-off events. [2024-06-27 18:18:26,565 INFO L125 PetriNetUnfolderBase]: For 199885/199895 co-relation queries the response was YES. [2024-06-27 18:18:26,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46985 conditions, 8550 events. 5494/8550 cut-off events. For 199885/199895 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 53084 event pairs, 1381 based on Foata normal form. 9/8422 useless extension candidates. Maximal degree in co-relation 46916. Up to 7117 conditions per place. [2024-06-27 18:18:26,640 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 178 selfloop transitions, 60 changer transitions 0/249 dead transitions. [2024-06-27 18:18:26,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 249 transitions, 2814 flow [2024-06-27 18:18:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 18:18:26,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-06-27 18:18:26,641 INFO L175 Difference]: Start difference. First operand has 158 places, 199 transitions, 2060 flow. Second operand 8 states and 214 transitions. [2024-06-27 18:18:26,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 249 transitions, 2814 flow [2024-06-27 18:18:26,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 249 transitions, 2689 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:26,847 INFO L231 Difference]: Finished difference. Result has 162 places, 199 transitions, 2063 flow [2024-06-27 18:18:26,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2063, PETRI_PLACES=162, PETRI_TRANSITIONS=199} [2024-06-27 18:18:26,847 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 107 predicate places. [2024-06-27 18:18:26,847 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 199 transitions, 2063 flow [2024-06-27 18:18:26,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:26,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:26,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:26,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:18:26,848 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:26,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash 481170463, now seen corresponding path program 1 times [2024-06-27 18:18:26,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:26,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651170730] [2024-06-27 18:18:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:27,424 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 18:18:27,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651170730] [2024-06-27 18:18:27,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651170730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:27,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:27,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626008447] [2024-06-27 18:18:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:27,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:27,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:27,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:18:27,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 199 transitions, 2063 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 18:18:27,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:27,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:18:27,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:28,718 INFO L124 PetriNetUnfolderBase]: 6712/10261 cut-off events. [2024-06-27 18:18:28,719 INFO L125 PetriNetUnfolderBase]: For 238534/238545 co-relation queries the response was YES. [2024-06-27 18:18:28,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54562 conditions, 10261 events. 6712/10261 cut-off events. For 238534/238545 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 63018 event pairs, 2013 based on Foata normal form. 4/10077 useless extension candidates. Maximal degree in co-relation 54492. Up to 9411 conditions per place. [2024-06-27 18:18:28,804 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 192 selfloop transitions, 18 changer transitions 0/235 dead transitions. [2024-06-27 18:18:28,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 235 transitions, 2731 flow [2024-06-27 18:18:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:18:28,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 18:18:28,806 INFO L175 Difference]: Start difference. First operand has 162 places, 199 transitions, 2063 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:18:28,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 235 transitions, 2731 flow [2024-06-27 18:18:29,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 235 transitions, 2617 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:29,019 INFO L231 Difference]: Finished difference. Result has 163 places, 209 transitions, 2119 flow [2024-06-27 18:18:29,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2119, PETRI_PLACES=163, PETRI_TRANSITIONS=209} [2024-06-27 18:18:29,020 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 108 predicate places. [2024-06-27 18:18:29,020 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 209 transitions, 2119 flow [2024-06-27 18:18:29,020 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 18:18:29,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:29,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:29,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:18:29,020 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 18:18:29,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash -370093623, now seen corresponding path program 6 times [2024-06-27 18:18:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:29,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970089221] [2024-06-27 18:18:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:29,814 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 18:18:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970089221] [2024-06-27 18:18:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970089221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:29,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:29,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:29,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479947478] [2024-06-27 18:18:29,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:29,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:29,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:29,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:29,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:29,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 209 transitions, 2119 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:29,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:29,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:29,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:31,163 INFO L124 PetriNetUnfolderBase]: 5605/8800 cut-off events. [2024-06-27 18:18:31,164 INFO L125 PetriNetUnfolderBase]: For 225183/225209 co-relation queries the response was YES. [2024-06-27 18:18:31,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49005 conditions, 8800 events. 5605/8800 cut-off events. For 225183/225209 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 55543 event pairs, 1707 based on Foata normal form. 6/8647 useless extension candidates. Maximal degree in co-relation 48933. Up to 7810 conditions per place. [2024-06-27 18:18:31,242 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 209 selfloop transitions, 36 changer transitions 0/259 dead transitions. [2024-06-27 18:18:31,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 259 transitions, 2856 flow [2024-06-27 18:18:31,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:18:31,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-06-27 18:18:31,243 INFO L175 Difference]: Start difference. First operand has 163 places, 209 transitions, 2119 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:18:31,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 259 transitions, 2856 flow [2024-06-27 18:18:31,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 259 transitions, 2772 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-06-27 18:18:31,443 INFO L231 Difference]: Finished difference. Result has 172 places, 218 transitions, 2272 flow [2024-06-27 18:18:31,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2047, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2272, PETRI_PLACES=172, PETRI_TRANSITIONS=218} [2024-06-27 18:18:31,443 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-27 18:18:31,444 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 218 transitions, 2272 flow [2024-06-27 18:18:31,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:31,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:31,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:31,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:18:31,444 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:31,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash 374609061, now seen corresponding path program 4 times [2024-06-27 18:18:31,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:31,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455608033] [2024-06-27 18:18:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:31,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:32,139 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 18:18:32,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:32,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455608033] [2024-06-27 18:18:32,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455608033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:32,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:32,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:32,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354737166] [2024-06-27 18:18:32,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:32,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:32,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:32,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:32,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:32,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 218 transitions, 2272 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:32,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:32,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:32,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:33,526 INFO L124 PetriNetUnfolderBase]: 5651/8862 cut-off events. [2024-06-27 18:18:33,527 INFO L125 PetriNetUnfolderBase]: For 240083/240105 co-relation queries the response was YES. [2024-06-27 18:18:33,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50045 conditions, 8862 events. 5651/8862 cut-off events. For 240083/240105 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55891 event pairs, 1721 based on Foata normal form. 8/8712 useless extension candidates. Maximal degree in co-relation 49968. Up to 7730 conditions per place. [2024-06-27 18:18:33,608 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 218 selfloop transitions, 33 changer transitions 0/265 dead transitions. [2024-06-27 18:18:33,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 265 transitions, 3088 flow [2024-06-27 18:18:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:18:33,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:18:33,609 INFO L175 Difference]: Start difference. First operand has 172 places, 218 transitions, 2272 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:18:33,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 265 transitions, 3088 flow [2024-06-27 18:18:33,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 265 transitions, 3007 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:33,836 INFO L231 Difference]: Finished difference. Result has 177 places, 221 transitions, 2309 flow [2024-06-27 18:18:33,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2191, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2309, PETRI_PLACES=177, PETRI_TRANSITIONS=221} [2024-06-27 18:18:33,836 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 122 predicate places. [2024-06-27 18:18:33,836 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 221 transitions, 2309 flow [2024-06-27 18:18:33,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:33,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:33,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:33,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:18:33,837 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:33,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:33,837 INFO L85 PathProgramCache]: Analyzing trace with hash 374615571, now seen corresponding path program 5 times [2024-06-27 18:18:33,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:33,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755387281] [2024-06-27 18:18:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:33,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:34,533 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 18:18:34,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755387281] [2024-06-27 18:18:34,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755387281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:34,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:34,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504908823] [2024-06-27 18:18:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:34,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:34,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:34,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 221 transitions, 2309 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:34,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:34,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:34,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:36,004 INFO L124 PetriNetUnfolderBase]: 5697/8942 cut-off events. [2024-06-27 18:18:36,004 INFO L125 PetriNetUnfolderBase]: For 252006/252028 co-relation queries the response was YES. [2024-06-27 18:18:36,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50948 conditions, 8942 events. 5697/8942 cut-off events. For 252006/252028 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 56514 event pairs, 1736 based on Foata normal form. 8/8787 useless extension candidates. Maximal degree in co-relation 50869. Up to 7769 conditions per place. [2024-06-27 18:18:36,085 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 219 selfloop transitions, 35 changer transitions 0/268 dead transitions. [2024-06-27 18:18:36,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 268 transitions, 3141 flow [2024-06-27 18:18:36,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:18:36,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 18:18:36,086 INFO L175 Difference]: Start difference. First operand has 177 places, 221 transitions, 2309 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:18:36,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 268 transitions, 3141 flow [2024-06-27 18:18:36,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 268 transitions, 2960 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:36,302 INFO L231 Difference]: Finished difference. Result has 177 places, 224 transitions, 2256 flow [2024-06-27 18:18:36,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2256, PETRI_PLACES=177, PETRI_TRANSITIONS=224} [2024-06-27 18:18:36,303 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 122 predicate places. [2024-06-27 18:18:36,303 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 224 transitions, 2256 flow [2024-06-27 18:18:36,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:36,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:36,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:36,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:18:36,304 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:36,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash 383783511, now seen corresponding path program 6 times [2024-06-27 18:18:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:36,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18553317] [2024-06-27 18:18:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:36,957 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 18:18:36,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:36,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18553317] [2024-06-27 18:18:36,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18553317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:36,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:36,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328348649] [2024-06-27 18:18:36,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:36,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:36,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:37,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:37,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 224 transitions, 2256 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:37,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:37,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:37,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:38,503 INFO L124 PetriNetUnfolderBase]: 5687/8936 cut-off events. [2024-06-27 18:18:38,504 INFO L125 PetriNetUnfolderBase]: For 256694/256716 co-relation queries the response was YES. [2024-06-27 18:18:38,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50697 conditions, 8936 events. 5687/8936 cut-off events. For 256694/256716 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 56639 event pairs, 1742 based on Foata normal form. 8/8779 useless extension candidates. Maximal degree in co-relation 50617. Up to 7904 conditions per place. [2024-06-27 18:18:38,593 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 226 selfloop transitions, 23 changer transitions 0/263 dead transitions. [2024-06-27 18:18:38,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 263 transitions, 2868 flow [2024-06-27 18:18:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:18:38,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:18:38,594 INFO L175 Difference]: Start difference. First operand has 177 places, 224 transitions, 2256 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:18:38,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 263 transitions, 2868 flow [2024-06-27 18:18:38,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 263 transitions, 2774 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:38,864 INFO L231 Difference]: Finished difference. Result has 180 places, 224 transitions, 2216 flow [2024-06-27 18:18:38,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2216, PETRI_PLACES=180, PETRI_TRANSITIONS=224} [2024-06-27 18:18:38,865 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 125 predicate places. [2024-06-27 18:18:38,865 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 224 transitions, 2216 flow [2024-06-27 18:18:38,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:18:38,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:38,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:38,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:18:38,866 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 18:18:38,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:38,866 INFO L85 PathProgramCache]: Analyzing trace with hash 495425503, now seen corresponding path program 2 times [2024-06-27 18:18:38,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:38,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913698045] [2024-06-27 18:18:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:38,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:39,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:39,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913698045] [2024-06-27 18:18:39,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913698045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:39,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:39,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:39,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791346389] [2024-06-27 18:18:39,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:39,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:39,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:39,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:18:39,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 224 transitions, 2216 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 18:18:39,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:39,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:18:39,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:40,873 INFO L124 PetriNetUnfolderBase]: 6839/10571 cut-off events. [2024-06-27 18:18:40,874 INFO L125 PetriNetUnfolderBase]: For 297851/297871 co-relation queries the response was YES. [2024-06-27 18:18:40,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57573 conditions, 10571 events. 6839/10571 cut-off events. For 297851/297871 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 65963 event pairs, 2359 based on Foata normal form. 5/10384 useless extension candidates. Maximal degree in co-relation 57492. Up to 9625 conditions per place. [2024-06-27 18:18:41,005 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 200 selfloop transitions, 13 changer transitions 0/241 dead transitions. [2024-06-27 18:18:41,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 241 transitions, 2690 flow [2024-06-27 18:18:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-27 18:18:41,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-27 18:18:41,006 INFO L175 Difference]: Start difference. First operand has 180 places, 224 transitions, 2216 flow. Second operand 6 states and 134 transitions. [2024-06-27 18:18:41,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 241 transitions, 2690 flow [2024-06-27 18:18:41,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 241 transitions, 2596 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:41,501 INFO L231 Difference]: Finished difference. Result has 178 places, 224 transitions, 2154 flow [2024-06-27 18:18:41,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2154, PETRI_PLACES=178, PETRI_TRANSITIONS=224} [2024-06-27 18:18:41,501 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 123 predicate places. [2024-06-27 18:18:41,501 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 224 transitions, 2154 flow [2024-06-27 18:18:41,501 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 18:18:41,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:41,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:41,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:18:41,502 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:41,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:41,502 INFO L85 PathProgramCache]: Analyzing trace with hash 487813856, now seen corresponding path program 1 times [2024-06-27 18:18:41,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021891176] [2024-06-27 18:18:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:41,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:42,010 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 18:18:42,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021891176] [2024-06-27 18:18:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021891176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:42,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327092667] [2024-06-27 18:18:42,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:42,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:42,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:42,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:42,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:42,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:18:42,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 224 transitions, 2154 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 18:18:42,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:42,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:18:42,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:43,562 INFO L124 PetriNetUnfolderBase]: 6856/10602 cut-off events. [2024-06-27 18:18:43,562 INFO L125 PetriNetUnfolderBase]: For 309035/309055 co-relation queries the response was YES. [2024-06-27 18:18:43,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57724 conditions, 10602 events. 6856/10602 cut-off events. For 309035/309055 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 66276 event pairs, 2350 based on Foata normal form. 5/10413 useless extension candidates. Maximal degree in co-relation 57642. Up to 9611 conditions per place. [2024-06-27 18:18:43,679 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 202 selfloop transitions, 24 changer transitions 0/254 dead transitions. [2024-06-27 18:18:43,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 254 transitions, 2822 flow [2024-06-27 18:18:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:18:43,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-27 18:18:43,680 INFO L175 Difference]: Start difference. First operand has 178 places, 224 transitions, 2154 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:18:43,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 254 transitions, 2822 flow [2024-06-27 18:18:44,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 254 transitions, 2771 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:44,017 INFO L231 Difference]: Finished difference. Result has 179 places, 230 transitions, 2228 flow [2024-06-27 18:18:44,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2228, PETRI_PLACES=179, PETRI_TRANSITIONS=230} [2024-06-27 18:18:44,018 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 124 predicate places. [2024-06-27 18:18:44,018 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 230 transitions, 2228 flow [2024-06-27 18:18:44,018 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 18:18:44,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:44,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:44,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:18:44,019 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:44,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1498082156, now seen corresponding path program 2 times [2024-06-27 18:18:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352005585] [2024-06-27 18:18:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:44,532 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 18:18:44,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:44,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352005585] [2024-06-27 18:18:44,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352005585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:44,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:44,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:44,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333520949] [2024-06-27 18:18:44,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:44,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:44,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:44,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:44,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:18:44,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 230 transitions, 2228 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 18:18:44,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:44,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:18:44,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:46,076 INFO L124 PetriNetUnfolderBase]: 6853/10599 cut-off events. [2024-06-27 18:18:46,076 INFO L125 PetriNetUnfolderBase]: For 324057/324083 co-relation queries the response was YES. [2024-06-27 18:18:46,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58883 conditions, 10599 events. 6853/10599 cut-off events. For 324057/324083 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 66252 event pairs, 2348 based on Foata normal form. 9/10413 useless extension candidates. Maximal degree in co-relation 58801. Up to 9608 conditions per place. [2024-06-27 18:18:46,195 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 198 selfloop transitions, 24 changer transitions 0/250 dead transitions. [2024-06-27 18:18:46,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 250 transitions, 2736 flow [2024-06-27 18:18:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:18:46,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-27 18:18:46,197 INFO L175 Difference]: Start difference. First operand has 179 places, 230 transitions, 2228 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:18:46,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 250 transitions, 2736 flow [2024-06-27 18:18:46,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 250 transitions, 2677 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 18:18:46,546 INFO L231 Difference]: Finished difference. Result has 183 places, 230 transitions, 2224 flow [2024-06-27 18:18:46,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2224, PETRI_PLACES=183, PETRI_TRANSITIONS=230} [2024-06-27 18:18:46,546 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 128 predicate places. [2024-06-27 18:18:46,546 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 230 transitions, 2224 flow [2024-06-27 18:18:46,546 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 18:18:46,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:46,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:46,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:18:46,547 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 18:18:46,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash 384121132, now seen corresponding path program 1 times [2024-06-27 18:18:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:46,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816744517] [2024-06-27 18:18:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:46,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:47,466 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 18:18:47,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:47,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816744517] [2024-06-27 18:18:47,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816744517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:47,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:47,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179866691] [2024-06-27 18:18:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:47,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:47,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:47,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:47,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:18:47,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 230 transitions, 2224 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 18:18:47,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:47,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:18:47,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:49,274 INFO L124 PetriNetUnfolderBase]: 6659/10344 cut-off events. [2024-06-27 18:18:49,274 INFO L125 PetriNetUnfolderBase]: For 335742/335782 co-relation queries the response was YES. [2024-06-27 18:18:49,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58326 conditions, 10344 events. 6659/10344 cut-off events. For 335742/335782 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 64970 event pairs, 2058 based on Foata normal form. 4/10138 useless extension candidates. Maximal degree in co-relation 58242. Up to 9234 conditions per place. [2024-06-27 18:18:49,385 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 240 selfloop transitions, 32 changer transitions 0/287 dead transitions. [2024-06-27 18:18:49,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 287 transitions, 2980 flow [2024-06-27 18:18:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:18:49,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-27 18:18:49,386 INFO L175 Difference]: Start difference. First operand has 183 places, 230 transitions, 2224 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:18:49,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 287 transitions, 2980 flow [2024-06-27 18:18:49,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 287 transitions, 2907 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:49,830 INFO L231 Difference]: Finished difference. Result has 187 places, 237 transitions, 2307 flow [2024-06-27 18:18:49,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2307, PETRI_PLACES=187, PETRI_TRANSITIONS=237} [2024-06-27 18:18:49,831 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 132 predicate places. [2024-06-27 18:18:49,831 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 237 transitions, 2307 flow [2024-06-27 18:18:49,831 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 18:18:49,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:49,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:49,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:18:49,831 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 18:18:49,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1611086852, now seen corresponding path program 1 times [2024-06-27 18:18:49,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:49,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704795030] [2024-06-27 18:18:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:49,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:50,902 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 18:18:50,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:50,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704795030] [2024-06-27 18:18:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704795030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:50,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:50,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:50,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213248186] [2024-06-27 18:18:50,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:50,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:50,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:51,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:51,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 237 transitions, 2307 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:18:51,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:51,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:51,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:52,497 INFO L124 PetriNetUnfolderBase]: 6392/9966 cut-off events. [2024-06-27 18:18:52,497 INFO L125 PetriNetUnfolderBase]: For 344551/344589 co-relation queries the response was YES. [2024-06-27 18:18:52,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58050 conditions, 9966 events. 6392/9966 cut-off events. For 344551/344589 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 62994 event pairs, 1319 based on Foata normal form. 5/9778 useless extension candidates. Maximal degree in co-relation 57965. Up to 8158 conditions per place. [2024-06-27 18:18:52,610 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 228 selfloop transitions, 68 changer transitions 0/313 dead transitions. [2024-06-27 18:18:52,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 313 transitions, 3372 flow [2024-06-27 18:18:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 18:18:52,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-27 18:18:52,613 INFO L175 Difference]: Start difference. First operand has 187 places, 237 transitions, 2307 flow. Second operand 9 states and 236 transitions. [2024-06-27 18:18:52,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 313 transitions, 3372 flow [2024-06-27 18:18:53,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 313 transitions, 3277 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:53,018 INFO L231 Difference]: Finished difference. Result has 193 places, 250 transitions, 2539 flow [2024-06-27 18:18:53,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2539, PETRI_PLACES=193, PETRI_TRANSITIONS=250} [2024-06-27 18:18:53,019 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 138 predicate places. [2024-06-27 18:18:53,019 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 250 transitions, 2539 flow [2024-06-27 18:18:53,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:18:53,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:53,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:53,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:18:53,020 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 18:18:53,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:53,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1612964522, now seen corresponding path program 2 times [2024-06-27 18:18:53,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:53,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781723246] [2024-06-27 18:18:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:53,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:54,079 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 18:18:54,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:54,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781723246] [2024-06-27 18:18:54,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781723246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:54,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:54,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80730061] [2024-06-27 18:18:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:54,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:54,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:54,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:54,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 250 transitions, 2539 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:18:54,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:54,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:54,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:56,017 INFO L124 PetriNetUnfolderBase]: 6424/10006 cut-off events. [2024-06-27 18:18:56,018 INFO L125 PetriNetUnfolderBase]: For 361681/361719 co-relation queries the response was YES. [2024-06-27 18:18:56,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59731 conditions, 10006 events. 6424/10006 cut-off events. For 361681/361719 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 63249 event pairs, 1649 based on Foata normal form. 5/9822 useless extension candidates. Maximal degree in co-relation 59642. Up to 8524 conditions per place. [2024-06-27 18:18:56,136 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 239 selfloop transitions, 68 changer transitions 0/324 dead transitions. [2024-06-27 18:18:56,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 324 transitions, 3429 flow [2024-06-27 18:18:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-06-27 18:18:56,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231910946196661 [2024-06-27 18:18:56,137 INFO L175 Difference]: Start difference. First operand has 193 places, 250 transitions, 2539 flow. Second operand 11 states and 282 transitions. [2024-06-27 18:18:56,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 324 transitions, 3429 flow [2024-06-27 18:18:56,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 324 transitions, 3337 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:56,576 INFO L231 Difference]: Finished difference. Result has 201 places, 252 transitions, 2636 flow [2024-06-27 18:18:56,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2636, PETRI_PLACES=201, PETRI_TRANSITIONS=252} [2024-06-27 18:18:56,577 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 146 predicate places. [2024-06-27 18:18:56,577 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 252 transitions, 2636 flow [2024-06-27 18:18:56,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:18:56,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:56,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:56,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:18:56,577 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:56,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1612960802, now seen corresponding path program 3 times [2024-06-27 18:18:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:56,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423245782] [2024-06-27 18:18:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:56,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:57,626 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 18:18:57,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:57,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423245782] [2024-06-27 18:18:57,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423245782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:57,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:57,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:57,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790764184] [2024-06-27 18:18:57,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:57,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:57,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:57,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:57,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:57,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 252 transitions, 2636 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:18:57,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:57,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:57,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:59,383 INFO L124 PetriNetUnfolderBase]: 6461/10049 cut-off events. [2024-06-27 18:18:59,383 INFO L125 PetriNetUnfolderBase]: For 375229/375267 co-relation queries the response was YES. [2024-06-27 18:18:59,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60602 conditions, 10049 events. 6461/10049 cut-off events. For 375229/375267 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 63434 event pairs, 1647 based on Foata normal form. 5/9869 useless extension candidates. Maximal degree in co-relation 60511. Up to 8450 conditions per place. [2024-06-27 18:18:59,499 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 233 selfloop transitions, 71 changer transitions 0/321 dead transitions. [2024-06-27 18:18:59,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 321 transitions, 3496 flow [2024-06-27 18:18:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-27 18:18:59,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:18:59,500 INFO L175 Difference]: Start difference. First operand has 201 places, 252 transitions, 2636 flow. Second operand 10 states and 260 transitions. [2024-06-27 18:18:59,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 321 transitions, 3496 flow [2024-06-27 18:18:59,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 321 transitions, 3329 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:59,920 INFO L231 Difference]: Finished difference. Result has 203 places, 256 transitions, 2680 flow [2024-06-27 18:18:59,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2680, PETRI_PLACES=203, PETRI_TRANSITIONS=256} [2024-06-27 18:18:59,920 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 148 predicate places. [2024-06-27 18:18:59,921 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 256 transitions, 2680 flow [2024-06-27 18:18:59,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:18:59,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:59,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:59,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:18:59,921 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 18:18:59,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1612964677, now seen corresponding path program 1 times [2024-06-27 18:18:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:59,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369875755] [2024-06-27 18:18:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:00,852 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 18:19:00,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:00,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369875755] [2024-06-27 18:19:00,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369875755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:00,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:00,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216877160] [2024-06-27 18:19:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:00,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:00,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:00,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:00,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:00,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:00,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 256 transitions, 2680 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:00,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:00,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:00,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:02,565 INFO L124 PetriNetUnfolderBase]: 6482/9838 cut-off events. [2024-06-27 18:19:02,565 INFO L125 PetriNetUnfolderBase]: For 389891/389915 co-relation queries the response was YES. [2024-06-27 18:19:02,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60958 conditions, 9838 events. 6482/9838 cut-off events. For 389891/389915 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 59829 event pairs, 1278 based on Foata normal form. 5/9757 useless extension candidates. Maximal degree in co-relation 60865. Up to 7801 conditions per place. [2024-06-27 18:19:02,683 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 193 selfloop transitions, 121 changer transitions 0/331 dead transitions. [2024-06-27 18:19:02,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 331 transitions, 4010 flow [2024-06-27 18:19:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-27 18:19:02,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532879818594104 [2024-06-27 18:19:02,684 INFO L175 Difference]: Start difference. First operand has 203 places, 256 transitions, 2680 flow. Second operand 9 states and 244 transitions. [2024-06-27 18:19:02,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 331 transitions, 4010 flow [2024-06-27 18:19:03,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 331 transitions, 3861 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:03,139 INFO L231 Difference]: Finished difference. Result has 206 places, 265 transitions, 2984 flow [2024-06-27 18:19:03,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2984, PETRI_PLACES=206, PETRI_TRANSITIONS=265} [2024-06-27 18:19:03,140 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 151 predicate places. [2024-06-27 18:19:03,140 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 265 transitions, 2984 flow [2024-06-27 18:19:03,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:03,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:03,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:03,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:19:03,141 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 18:19:03,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1699806217, now seen corresponding path program 2 times [2024-06-27 18:19:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135422429] [2024-06-27 18:19:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:04,132 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 18:19:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:04,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135422429] [2024-06-27 18:19:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135422429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:04,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:04,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871932387] [2024-06-27 18:19:04,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:04,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:04,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:04,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 265 transitions, 2984 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:04,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:04,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:04,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:05,838 INFO L124 PetriNetUnfolderBase]: 6553/9922 cut-off events. [2024-06-27 18:19:05,838 INFO L125 PetriNetUnfolderBase]: For 411000/411024 co-relation queries the response was YES. [2024-06-27 18:19:05,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63934 conditions, 9922 events. 6553/9922 cut-off events. For 411000/411024 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 60334 event pairs, 1291 based on Foata normal form. 5/9849 useless extension candidates. Maximal degree in co-relation 63839. Up to 8303 conditions per place. [2024-06-27 18:19:05,955 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 219 selfloop transitions, 101 changer transitions 0/337 dead transitions. [2024-06-27 18:19:05,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 337 transitions, 4212 flow [2024-06-27 18:19:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:19:05,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-27 18:19:05,956 INFO L175 Difference]: Start difference. First operand has 206 places, 265 transitions, 2984 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:19:05,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 337 transitions, 4212 flow [2024-06-27 18:19:06,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 337 transitions, 4122 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 18:19:06,513 INFO L231 Difference]: Finished difference. Result has 213 places, 276 transitions, 3327 flow [2024-06-27 18:19:06,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2900, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3327, PETRI_PLACES=213, PETRI_TRANSITIONS=276} [2024-06-27 18:19:06,513 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 158 predicate places. [2024-06-27 18:19:06,514 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 276 transitions, 3327 flow [2024-06-27 18:19:06,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:06,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:06,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:19:06,514 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 18:19:06,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash 463923859, now seen corresponding path program 3 times [2024-06-27 18:19:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:06,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693655706] [2024-06-27 18:19:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:07,524 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 18:19:07,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:07,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693655706] [2024-06-27 18:19:07,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693655706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:07,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:07,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:07,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175360521] [2024-06-27 18:19:07,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:07,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:07,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:07,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:07,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:07,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:07,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 276 transitions, 3327 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:07,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:07,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:07,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:09,436 INFO L124 PetriNetUnfolderBase]: 6643/10377 cut-off events. [2024-06-27 18:19:09,436 INFO L125 PetriNetUnfolderBase]: For 436965/437003 co-relation queries the response was YES. [2024-06-27 18:19:09,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66621 conditions, 10377 events. 6643/10377 cut-off events. For 436965/437003 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 66250 event pairs, 1580 based on Foata normal form. 5/10179 useless extension candidates. Maximal degree in co-relation 66522. Up to 8539 conditions per place. [2024-06-27 18:19:09,567 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 252 selfloop transitions, 76 changer transitions 0/345 dead transitions. [2024-06-27 18:19:09,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 345 transitions, 4292 flow [2024-06-27 18:19:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 18:19:09,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-06-27 18:19:09,568 INFO L175 Difference]: Start difference. First operand has 213 places, 276 transitions, 3327 flow. Second operand 10 states and 259 transitions. [2024-06-27 18:19:09,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 345 transitions, 4292 flow [2024-06-27 18:19:10,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 345 transitions, 3966 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:10,164 INFO L231 Difference]: Finished difference. Result has 218 places, 282 transitions, 3276 flow [2024-06-27 18:19:10,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3276, PETRI_PLACES=218, PETRI_TRANSITIONS=282} [2024-06-27 18:19:10,165 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 163 predicate places. [2024-06-27 18:19:10,165 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 282 transitions, 3276 flow [2024-06-27 18:19:10,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:10,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:10,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:10,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:19:10,165 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 18:19:10,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1699656487, now seen corresponding path program 4 times [2024-06-27 18:19:10,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:10,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232573909] [2024-06-27 18:19:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:10,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:11,161 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 18:19:11,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:11,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232573909] [2024-06-27 18:19:11,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232573909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:11,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:11,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:11,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819501678] [2024-06-27 18:19:11,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:11,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:11,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 282 transitions, 3276 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:11,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:11,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:11,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:13,211 INFO L124 PetriNetUnfolderBase]: 6689/10444 cut-off events. [2024-06-27 18:19:13,211 INFO L125 PetriNetUnfolderBase]: For 451081/451119 co-relation queries the response was YES. [2024-06-27 18:19:13,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67112 conditions, 10444 events. 6689/10444 cut-off events. For 451081/451119 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 66746 event pairs, 1578 based on Foata normal form. 5/10248 useless extension candidates. Maximal degree in co-relation 67012. Up to 8535 conditions per place. [2024-06-27 18:19:13,350 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 254 selfloop transitions, 85 changer transitions 0/356 dead transitions. [2024-06-27 18:19:13,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 356 transitions, 4246 flow [2024-06-27 18:19:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-06-27 18:19:13,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250463821892394 [2024-06-27 18:19:13,352 INFO L175 Difference]: Start difference. First operand has 218 places, 282 transitions, 3276 flow. Second operand 11 states and 283 transitions. [2024-06-27 18:19:13,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 356 transitions, 4246 flow [2024-06-27 18:19:13,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 356 transitions, 4072 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:13,951 INFO L231 Difference]: Finished difference. Result has 221 places, 285 transitions, 3348 flow [2024-06-27 18:19:13,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3348, PETRI_PLACES=221, PETRI_TRANSITIONS=285} [2024-06-27 18:19:13,951 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 166 predicate places. [2024-06-27 18:19:13,951 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 285 transitions, 3348 flow [2024-06-27 18:19:13,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:13,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:13,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:13,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:19:13,952 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:13,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1795335416, now seen corresponding path program 1 times [2024-06-27 18:19:13,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:13,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314800960] [2024-06-27 18:19:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:13,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:14,629 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 18:19:14,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:14,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314800960] [2024-06-27 18:19:14,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314800960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:14,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:14,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:14,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864173686] [2024-06-27 18:19:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:14,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:14,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:14,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:14,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:19:14,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 285 transitions, 3348 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 18:19:14,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:14,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:19:14,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:16,432 INFO L124 PetriNetUnfolderBase]: 7378/11359 cut-off events. [2024-06-27 18:19:16,432 INFO L125 PetriNetUnfolderBase]: For 477098/477126 co-relation queries the response was YES. [2024-06-27 18:19:16,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71567 conditions, 11359 events. 7378/11359 cut-off events. For 477098/477126 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 71287 event pairs, 2013 based on Foata normal form. 26/11159 useless extension candidates. Maximal degree in co-relation 71466. Up to 10060 conditions per place. [2024-06-27 18:19:16,576 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 265 selfloop transitions, 43 changer transitions 0/342 dead transitions. [2024-06-27 18:19:16,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 342 transitions, 4480 flow [2024-06-27 18:19:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:19:16,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2024-06-27 18:19:16,577 INFO L175 Difference]: Start difference. First operand has 221 places, 285 transitions, 3348 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:19:16,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 342 transitions, 4480 flow [2024-06-27 18:19:17,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 342 transitions, 4292 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:17,284 INFO L231 Difference]: Finished difference. Result has 221 places, 304 transitions, 3517 flow [2024-06-27 18:19:17,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3160, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3517, PETRI_PLACES=221, PETRI_TRANSITIONS=304} [2024-06-27 18:19:17,285 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 166 predicate places. [2024-06-27 18:19:17,285 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 304 transitions, 3517 flow [2024-06-27 18:19:17,285 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 18:19:17,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:17,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:17,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:19:17,285 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:17,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 978711586, now seen corresponding path program 4 times [2024-06-27 18:19:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:17,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484556663] [2024-06-27 18:19:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:17,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:18,253 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 18:19:18,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:18,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484556663] [2024-06-27 18:19:18,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484556663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:18,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:18,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880918892] [2024-06-27 18:19:18,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:18,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:18,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:18,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 304 transitions, 3517 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:18,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:18,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:18,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:20,178 INFO L124 PetriNetUnfolderBase]: 6815/10300 cut-off events. [2024-06-27 18:19:20,178 INFO L125 PetriNetUnfolderBase]: For 494598/494628 co-relation queries the response was YES. [2024-06-27 18:19:20,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70006 conditions, 10300 events. 6815/10300 cut-off events. For 494598/494628 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 62630 event pairs, 1086 based on Foata normal form. 5/10222 useless extension candidates. Maximal degree in co-relation 69902. Up to 8890 conditions per place. [2024-06-27 18:19:20,317 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 254 selfloop transitions, 103 changer transitions 0/379 dead transitions. [2024-06-27 18:19:20,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 379 transitions, 4844 flow [2024-06-27 18:19:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-27 18:19:20,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487528344671202 [2024-06-27 18:19:20,318 INFO L175 Difference]: Start difference. First operand has 221 places, 304 transitions, 3517 flow. Second operand 9 states and 242 transitions. [2024-06-27 18:19:20,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 379 transitions, 4844 flow [2024-06-27 18:19:20,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 379 transitions, 4780 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-27 18:19:20,985 INFO L231 Difference]: Finished difference. Result has 231 places, 316 transitions, 3969 flow [2024-06-27 18:19:20,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3969, PETRI_PLACES=231, PETRI_TRANSITIONS=316} [2024-06-27 18:19:20,986 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 176 predicate places. [2024-06-27 18:19:20,986 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 316 transitions, 3969 flow [2024-06-27 18:19:20,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:20,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:20,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:20,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:19:20,987 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:20,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash -257161472, now seen corresponding path program 5 times [2024-06-27 18:19:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651196277] [2024-06-27 18:19:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:21,999 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 18:19:21,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651196277] [2024-06-27 18:19:21,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651196277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:21,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:21,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:21,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755960713] [2024-06-27 18:19:22,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:22,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:22,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:22,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:22,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:22,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 316 transitions, 3969 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:22,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:22,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:22,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:23,994 INFO L124 PetriNetUnfolderBase]: 6888/10406 cut-off events. [2024-06-27 18:19:23,994 INFO L125 PetriNetUnfolderBase]: For 521166/521196 co-relation queries the response was YES. [2024-06-27 18:19:24,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72635 conditions, 10406 events. 6888/10406 cut-off events. For 521166/521196 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 63415 event pairs, 1411 based on Foata normal form. 5/10328 useless extension candidates. Maximal degree in co-relation 72526. Up to 9156 conditions per place. [2024-06-27 18:19:24,132 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 262 selfloop transitions, 102 changer transitions 0/386 dead transitions. [2024-06-27 18:19:24,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 386 transitions, 5077 flow [2024-06-27 18:19:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 18:19:24,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-06-27 18:19:24,133 INFO L175 Difference]: Start difference. First operand has 231 places, 316 transitions, 3969 flow. Second operand 9 states and 238 transitions. [2024-06-27 18:19:24,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 386 transitions, 5077 flow [2024-06-27 18:19:24,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 386 transitions, 4896 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:24,842 INFO L231 Difference]: Finished difference. Result has 237 places, 326 transitions, 4190 flow [2024-06-27 18:19:24,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4190, PETRI_PLACES=237, PETRI_TRANSITIONS=326} [2024-06-27 18:19:24,842 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 182 predicate places. [2024-06-27 18:19:24,842 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 326 transitions, 4190 flow [2024-06-27 18:19:24,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:24,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:24,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:24,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:19:24,843 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 18:19:24,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash -257161317, now seen corresponding path program 5 times [2024-06-27 18:19:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966546109] [2024-06-27 18:19:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:25,777 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 18:19:25,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:25,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966546109] [2024-06-27 18:19:25,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966546109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:25,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:25,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954836779] [2024-06-27 18:19:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:25,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:25,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:25,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 326 transitions, 4190 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:25,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:25,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:25,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:27,815 INFO L124 PetriNetUnfolderBase]: 6939/10451 cut-off events. [2024-06-27 18:19:27,815 INFO L125 PetriNetUnfolderBase]: For 534066/534090 co-relation queries the response was YES. [2024-06-27 18:19:27,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73507 conditions, 10451 events. 6939/10451 cut-off events. For 534066/534090 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 63516 event pairs, 1261 based on Foata normal form. 5/10385 useless extension candidates. Maximal degree in co-relation 73396. Up to 8507 conditions per place. [2024-06-27 18:19:27,956 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 248 selfloop transitions, 136 changer transitions 0/406 dead transitions. [2024-06-27 18:19:27,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 406 transitions, 5972 flow [2024-06-27 18:19:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-06-27 18:19:27,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736961451247166 [2024-06-27 18:19:27,958 INFO L175 Difference]: Start difference. First operand has 237 places, 326 transitions, 4190 flow. Second operand 9 states and 253 transitions. [2024-06-27 18:19:27,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 406 transitions, 5972 flow [2024-06-27 18:19:28,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 406 transitions, 5716 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:28,716 INFO L231 Difference]: Finished difference. Result has 241 places, 335 transitions, 4469 flow [2024-06-27 18:19:28,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3936, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4469, PETRI_PLACES=241, PETRI_TRANSITIONS=335} [2024-06-27 18:19:28,716 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 186 predicate places. [2024-06-27 18:19:28,716 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 335 transitions, 4469 flow [2024-06-27 18:19:28,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:28,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:28,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:19:28,717 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:28,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash 978859611, now seen corresponding path program 6 times [2024-06-27 18:19:28,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012422634] [2024-06-27 18:19:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:29,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:29,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012422634] [2024-06-27 18:19:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012422634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:29,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:29,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:29,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511846415] [2024-06-27 18:19:29,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:29,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:29,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:29,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:29,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 335 transitions, 4469 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:29,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:29,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:29,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:31,741 INFO L124 PetriNetUnfolderBase]: 7066/10630 cut-off events. [2024-06-27 18:19:31,741 INFO L125 PetriNetUnfolderBase]: For 560305/560329 co-relation queries the response was YES. [2024-06-27 18:19:31,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76297 conditions, 10630 events. 7066/10630 cut-off events. For 560305/560329 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 64713 event pairs, 1259 based on Foata normal form. 5/10564 useless extension candidates. Maximal degree in co-relation 76184. Up to 8912 conditions per place. [2024-06-27 18:19:31,891 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 272 selfloop transitions, 125 changer transitions 0/419 dead transitions. [2024-06-27 18:19:31,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 419 transitions, 6388 flow [2024-06-27 18:19:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-27 18:19:31,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668934240362812 [2024-06-27 18:19:31,892 INFO L175 Difference]: Start difference. First operand has 241 places, 335 transitions, 4469 flow. Second operand 9 states and 250 transitions. [2024-06-27 18:19:31,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 419 transitions, 6388 flow [2024-06-27 18:19:33,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 419 transitions, 6304 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:33,063 INFO L231 Difference]: Finished difference. Result has 248 places, 349 transitions, 4950 flow [2024-06-27 18:19:33,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4385, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4950, PETRI_PLACES=248, PETRI_TRANSITIONS=349} [2024-06-27 18:19:33,064 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 193 predicate places. [2024-06-27 18:19:33,064 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 349 transitions, 4950 flow [2024-06-27 18:19:33,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:33,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:33,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:33,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:19:33,064 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:33,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -257017322, now seen corresponding path program 6 times [2024-06-27 18:19:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:33,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321473219] [2024-06-27 18:19:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:33,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:34,093 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 18:19:34,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:34,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321473219] [2024-06-27 18:19:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321473219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:34,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:34,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192571024] [2024-06-27 18:19:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:34,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:34,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:34,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 349 transitions, 4950 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:34,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:34,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:34,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:36,459 INFO L124 PetriNetUnfolderBase]: 7133/11117 cut-off events. [2024-06-27 18:19:36,460 INFO L125 PetriNetUnfolderBase]: For 574458/574505 co-relation queries the response was YES. [2024-06-27 18:19:36,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77849 conditions, 11117 events. 7133/11117 cut-off events. For 574458/574505 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 71689 event pairs, 1713 based on Foata normal form. 6/10905 useless extension candidates. Maximal degree in co-relation 77733. Up to 9672 conditions per place. [2024-06-27 18:19:36,591 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 338 selfloop transitions, 47 changer transitions 0/407 dead transitions. [2024-06-27 18:19:36,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 407 transitions, 5954 flow [2024-06-27 18:19:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:19:36,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260770975056689 [2024-06-27 18:19:36,592 INFO L175 Difference]: Start difference. First operand has 248 places, 349 transitions, 4950 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:19:36,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 407 transitions, 5954 flow [2024-06-27 18:19:37,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 407 transitions, 5783 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:37,451 INFO L231 Difference]: Finished difference. Result has 254 places, 351 transitions, 4928 flow [2024-06-27 18:19:37,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4779, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4928, PETRI_PLACES=254, PETRI_TRANSITIONS=351} [2024-06-27 18:19:37,452 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 199 predicate places. [2024-06-27 18:19:37,452 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 351 transitions, 4928 flow [2024-06-27 18:19:37,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:37,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:37,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:37,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:19:37,452 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:37,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:37,452 INFO L85 PathProgramCache]: Analyzing trace with hash -257011587, now seen corresponding path program 7 times [2024-06-27 18:19:37,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:37,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622031959] [2024-06-27 18:19:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:37,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:38,593 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 18:19:38,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:38,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622031959] [2024-06-27 18:19:38,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622031959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:38,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091408723] [2024-06-27 18:19:38,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:38,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:38,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:38,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:38,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 351 transitions, 4928 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:38,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:38,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:38,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:40,746 INFO L124 PetriNetUnfolderBase]: 7130/11121 cut-off events. [2024-06-27 18:19:40,746 INFO L125 PetriNetUnfolderBase]: For 585299/585346 co-relation queries the response was YES. [2024-06-27 18:19:40,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77871 conditions, 11121 events. 7130/11121 cut-off events. For 585299/585346 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 71845 event pairs, 1588 based on Foata normal form. 6/10907 useless extension candidates. Maximal degree in co-relation 77753. Up to 9239 conditions per place. [2024-06-27 18:19:40,895 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 315 selfloop transitions, 76 changer transitions 0/413 dead transitions. [2024-06-27 18:19:40,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 413 transitions, 5985 flow [2024-06-27 18:19:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:19:40,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-27 18:19:40,896 INFO L175 Difference]: Start difference. First operand has 254 places, 351 transitions, 4928 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:19:40,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 413 transitions, 5985 flow [2024-06-27 18:19:41,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 413 transitions, 5784 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:41,845 INFO L231 Difference]: Finished difference. Result has 257 places, 354 transitions, 4964 flow [2024-06-27 18:19:41,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4964, PETRI_PLACES=257, PETRI_TRANSITIONS=354} [2024-06-27 18:19:41,846 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 202 predicate places. [2024-06-27 18:19:41,846 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 354 transitions, 4964 flow [2024-06-27 18:19:41,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:41,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:41,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:19:41,846 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:41,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 984221836, now seen corresponding path program 7 times [2024-06-27 18:19:41,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:41,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623802431] [2024-06-27 18:19:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:42,926 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 18:19:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:42,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623802431] [2024-06-27 18:19:42,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623802431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:42,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:42,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:42,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614341216] [2024-06-27 18:19:42,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:42,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:42,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:43,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:43,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 354 transitions, 4964 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:43,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:43,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:43,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:45,078 INFO L124 PetriNetUnfolderBase]: 7167/11182 cut-off events. [2024-06-27 18:19:45,078 INFO L125 PetriNetUnfolderBase]: For 603628/603675 co-relation queries the response was YES. [2024-06-27 18:19:45,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78581 conditions, 11182 events. 7167/11182 cut-off events. For 603628/603675 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 72294 event pairs, 1707 based on Foata normal form. 6/10968 useless extension candidates. Maximal degree in co-relation 78462. Up to 9723 conditions per place. [2024-06-27 18:19:45,227 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 343 selfloop transitions, 44 changer transitions 0/409 dead transitions. [2024-06-27 18:19:45,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 409 transitions, 5968 flow [2024-06-27 18:19:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:19:45,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-27 18:19:45,228 INFO L175 Difference]: Start difference. First operand has 257 places, 354 transitions, 4964 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:19:45,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 409 transitions, 5968 flow [2024-06-27 18:19:46,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 409 transitions, 5814 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:46,189 INFO L231 Difference]: Finished difference. Result has 259 places, 356 transitions, 4957 flow [2024-06-27 18:19:46,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4957, PETRI_PLACES=259, PETRI_TRANSITIONS=356} [2024-06-27 18:19:46,190 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 204 predicate places. [2024-06-27 18:19:46,190 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 356 transitions, 4957 flow [2024-06-27 18:19:46,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:46,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:46,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:46,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:19:46,190 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:46,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash 984221991, now seen corresponding path program 8 times [2024-06-27 18:19:46,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:46,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788321328] [2024-06-27 18:19:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:46,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:47,170 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 18:19:47,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:47,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788321328] [2024-06-27 18:19:47,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788321328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:47,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:47,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:47,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218158868] [2024-06-27 18:19:47,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:47,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:47,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:47,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:47,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:47,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:47,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 356 transitions, 4957 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:47,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:47,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:47,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:49,380 INFO L124 PetriNetUnfolderBase]: 7262/10931 cut-off events. [2024-06-27 18:19:49,381 INFO L125 PetriNetUnfolderBase]: For 628881/628905 co-relation queries the response was YES. [2024-06-27 18:19:49,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79778 conditions, 10931 events. 7262/10931 cut-off events. For 628881/628905 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 66855 event pairs, 1281 based on Foata normal form. 5/10865 useless extension candidates. Maximal degree in co-relation 79658. Up to 9162 conditions per place. [2024-06-27 18:19:49,529 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 288 selfloop transitions, 123 changer transitions 0/433 dead transitions. [2024-06-27 18:19:49,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 433 transitions, 6731 flow [2024-06-27 18:19:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-27 18:19:49,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532879818594104 [2024-06-27 18:19:49,530 INFO L175 Difference]: Start difference. First operand has 259 places, 356 transitions, 4957 flow. Second operand 9 states and 244 transitions. [2024-06-27 18:19:49,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 433 transitions, 6731 flow [2024-06-27 18:19:50,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 433 transitions, 6612 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:50,550 INFO L231 Difference]: Finished difference. Result has 262 places, 368 transitions, 5427 flow [2024-06-27 18:19:50,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4838, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5427, PETRI_PLACES=262, PETRI_TRANSITIONS=368} [2024-06-27 18:19:50,551 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 207 predicate places. [2024-06-27 18:19:50,551 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 368 transitions, 5427 flow [2024-06-27 18:19:50,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:50,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:50,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:50,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:19:50,551 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:50,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:50,552 INFO L85 PathProgramCache]: Analyzing trace with hash 984227571, now seen corresponding path program 9 times [2024-06-27 18:19:50,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:50,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113952103] [2024-06-27 18:19:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:51,719 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 18:19:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113952103] [2024-06-27 18:19:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113952103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:51,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:51,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:51,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136832507] [2024-06-27 18:19:51,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:51,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:51,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:51,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:51,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:51,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:51,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 368 transitions, 5427 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:51,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:51,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:51,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:54,200 INFO L124 PetriNetUnfolderBase]: 7313/11010 cut-off events. [2024-06-27 18:19:54,201 INFO L125 PetriNetUnfolderBase]: For 652507/652531 co-relation queries the response was YES. [2024-06-27 18:19:54,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81586 conditions, 11010 events. 7313/11010 cut-off events. For 652507/652531 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 67425 event pairs, 1277 based on Foata normal form. 5/10944 useless extension candidates. Maximal degree in co-relation 81464. Up to 9309 conditions per place. [2024-06-27 18:19:54,341 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 297 selfloop transitions, 124 changer transitions 0/443 dead transitions. [2024-06-27 18:19:54,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 443 transitions, 6881 flow [2024-06-27 18:19:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-27 18:19:54,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448979591836735 [2024-06-27 18:19:54,342 INFO L175 Difference]: Start difference. First operand has 262 places, 368 transitions, 5427 flow. Second operand 10 states and 267 transitions. [2024-06-27 18:19:54,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 443 transitions, 6881 flow [2024-06-27 18:19:55,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 443 transitions, 6633 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:55,396 INFO L231 Difference]: Finished difference. Result has 268 places, 375 transitions, 5620 flow [2024-06-27 18:19:55,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5620, PETRI_PLACES=268, PETRI_TRANSITIONS=375} [2024-06-27 18:19:55,397 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 213 predicate places. [2024-06-27 18:19:55,397 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 375 transitions, 5620 flow [2024-06-27 18:19:55,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:55,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:55,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:55,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:19:55,398 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:55,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 984429381, now seen corresponding path program 10 times [2024-06-27 18:19:55,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:55,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625707029] [2024-06-27 18:19:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:55,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:56,556 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 18:19:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625707029] [2024-06-27 18:19:56,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625707029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:56,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:56,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:56,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697799020] [2024-06-27 18:19:56,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:56,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:56,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:56,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:56,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:56,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 375 transitions, 5620 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:19:56,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:56,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:56,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:59,182 INFO L124 PetriNetUnfolderBase]: 7308/10994 cut-off events. [2024-06-27 18:19:59,182 INFO L125 PetriNetUnfolderBase]: For 662539/662560 co-relation queries the response was YES. [2024-06-27 18:19:59,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81890 conditions, 10994 events. 7308/10994 cut-off events. For 662539/662560 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 67247 event pairs, 1275 based on Foata normal form. 4/10927 useless extension candidates. Maximal degree in co-relation 81768. Up to 9302 conditions per place. [2024-06-27 18:19:59,342 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 294 selfloop transitions, 126 changer transitions 0/442 dead transitions. [2024-06-27 18:19:59,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 442 transitions, 6916 flow [2024-06-27 18:19:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-27 18:19:59,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 18:19:59,345 INFO L175 Difference]: Start difference. First operand has 268 places, 375 transitions, 5620 flow. Second operand 10 states and 265 transitions. [2024-06-27 18:19:59,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 442 transitions, 6916 flow [2024-06-27 18:20:00,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 442 transitions, 6589 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:00,717 INFO L231 Difference]: Finished difference. Result has 272 places, 375 transitions, 5554 flow [2024-06-27 18:20:00,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5293, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5554, PETRI_PLACES=272, PETRI_TRANSITIONS=375} [2024-06-27 18:20:00,717 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 217 predicate places. [2024-06-27 18:20:00,717 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 375 transitions, 5554 flow [2024-06-27 18:20:00,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:00,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:00,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:00,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:20:00,718 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:00,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2031383528, now seen corresponding path program 1 times [2024-06-27 18:20:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:00,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000520256] [2024-06-27 18:20:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:00,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:01,406 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 18:20:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:01,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000520256] [2024-06-27 18:20:01,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000520256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:01,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:01,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:01,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981766437] [2024-06-27 18:20:01,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:01,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:01,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:01,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:01,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:20:01,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 375 transitions, 5554 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 18:20:01,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:01,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:20:01,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:03,633 INFO L124 PetriNetUnfolderBase]: 8133/12452 cut-off events. [2024-06-27 18:20:03,633 INFO L125 PetriNetUnfolderBase]: For 701063/701101 co-relation queries the response was YES. [2024-06-27 18:20:03,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87967 conditions, 12452 events. 8133/12452 cut-off events. For 701063/701101 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 78410 event pairs, 2165 based on Foata normal form. 39/12259 useless extension candidates. Maximal degree in co-relation 87844. Up to 11252 conditions per place. [2024-06-27 18:20:03,793 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 347 selfloop transitions, 26 changer transitions 0/420 dead transitions. [2024-06-27 18:20:03,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 420 transitions, 6660 flow [2024-06-27 18:20:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:20:03,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-06-27 18:20:03,794 INFO L175 Difference]: Start difference. First operand has 272 places, 375 transitions, 5554 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:20:03,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 420 transitions, 6660 flow [2024-06-27 18:20:05,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 420 transitions, 6406 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:05,008 INFO L231 Difference]: Finished difference. Result has 274 places, 385 transitions, 5509 flow [2024-06-27 18:20:05,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5300, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5509, PETRI_PLACES=274, PETRI_TRANSITIONS=385} [2024-06-27 18:20:05,008 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 219 predicate places. [2024-06-27 18:20:05,008 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 385 transitions, 5509 flow [2024-06-27 18:20:05,009 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 18:20:05,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:05,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:05,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:20:05,009 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:05,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2031383094, now seen corresponding path program 2 times [2024-06-27 18:20:05,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:05,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700368207] [2024-06-27 18:20:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:05,694 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 18:20:05,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:05,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700368207] [2024-06-27 18:20:05,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700368207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:05,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:05,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:05,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904385489] [2024-06-27 18:20:05,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:05,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:05,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:05,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:20:05,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 385 transitions, 5509 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 18:20:05,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:05,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:20:05,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:08,098 INFO L124 PetriNetUnfolderBase]: 8209/12649 cut-off events. [2024-06-27 18:20:08,098 INFO L125 PetriNetUnfolderBase]: For 727842/727881 co-relation queries the response was YES. [2024-06-27 18:20:08,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89836 conditions, 12649 events. 8209/12649 cut-off events. For 727842/727881 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 80550 event pairs, 2168 based on Foata normal form. 38/12430 useless extension candidates. Maximal degree in co-relation 89712. Up to 11161 conditions per place. [2024-06-27 18:20:08,269 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 332 selfloop transitions, 46 changer transitions 0/425 dead transitions. [2024-06-27 18:20:08,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 425 transitions, 6730 flow [2024-06-27 18:20:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:20:08,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-27 18:20:08,270 INFO L175 Difference]: Start difference. First operand has 274 places, 385 transitions, 5509 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:20:08,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 425 transitions, 6730 flow [2024-06-27 18:20:09,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 425 transitions, 6678 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:09,478 INFO L231 Difference]: Finished difference. Result has 280 places, 393 transitions, 5682 flow [2024-06-27 18:20:09,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5457, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5682, PETRI_PLACES=280, PETRI_TRANSITIONS=393} [2024-06-27 18:20:09,479 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 225 predicate places. [2024-06-27 18:20:09,479 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 393 transitions, 5682 flow [2024-06-27 18:20:09,479 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 18:20:09,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:09,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:09,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:20:09,479 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:09,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1271818197, now seen corresponding path program 11 times [2024-06-27 18:20:09,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:09,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332433333] [2024-06-27 18:20:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:09,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:10,539 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 18:20:10,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:10,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332433333] [2024-06-27 18:20:10,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332433333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:10,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:10,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:10,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454705153] [2024-06-27 18:20:10,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:10,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:10,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:10,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:10,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 393 transitions, 5682 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:10,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:10,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:10,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:13,091 INFO L124 PetriNetUnfolderBase]: 7602/11889 cut-off events. [2024-06-27 18:20:13,092 INFO L125 PetriNetUnfolderBase]: For 742820/742881 co-relation queries the response was YES. [2024-06-27 18:20:13,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87119 conditions, 11889 events. 7602/11889 cut-off events. For 742820/742881 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 77797 event pairs, 1970 based on Foata normal form. 14/11679 useless extension candidates. Maximal degree in co-relation 86991. Up to 10200 conditions per place. [2024-06-27 18:20:13,265 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 373 selfloop transitions, 71 changer transitions 0/468 dead transitions. [2024-06-27 18:20:13,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 468 transitions, 7320 flow [2024-06-27 18:20:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-06-27 18:20:13,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-06-27 18:20:13,266 INFO L175 Difference]: Start difference. First operand has 280 places, 393 transitions, 5682 flow. Second operand 11 states and 273 transitions. [2024-06-27 18:20:13,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 468 transitions, 7320 flow [2024-06-27 18:20:14,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 468 transitions, 7221 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:14,587 INFO L231 Difference]: Finished difference. Result has 289 places, 405 transitions, 6056 flow [2024-06-27 18:20:14,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5583, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6056, PETRI_PLACES=289, PETRI_TRANSITIONS=405} [2024-06-27 18:20:14,588 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 234 predicate places. [2024-06-27 18:20:14,588 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 405 transitions, 6056 flow [2024-06-27 18:20:14,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:14,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:14,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:14,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:20:14,589 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:14,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1272025742, now seen corresponding path program 8 times [2024-06-27 18:20:14,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:14,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974722783] [2024-06-27 18:20:14,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:14,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974722783] [2024-06-27 18:20:15,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974722783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:15,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:15,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:15,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309684065] [2024-06-27 18:20:15,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:15,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:15,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:15,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:15,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 405 transitions, 6056 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:15,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:15,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:15,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:18,054 INFO L124 PetriNetUnfolderBase]: 7602/11879 cut-off events. [2024-06-27 18:20:18,054 INFO L125 PetriNetUnfolderBase]: For 758326/758381 co-relation queries the response was YES. [2024-06-27 18:20:18,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87414 conditions, 11879 events. 7602/11879 cut-off events. For 758326/758381 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 77748 event pairs, 2006 based on Foata normal form. 12/11672 useless extension candidates. Maximal degree in co-relation 87284. Up to 10488 conditions per place. [2024-06-27 18:20:18,220 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 393 selfloop transitions, 40 changer transitions 0/457 dead transitions. [2024-06-27 18:20:18,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 457 transitions, 7126 flow [2024-06-27 18:20:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:20:18,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011337868480725 [2024-06-27 18:20:18,222 INFO L175 Difference]: Start difference. First operand has 289 places, 405 transitions, 6056 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:20:18,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 457 transitions, 7126 flow [2024-06-27 18:20:19,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 457 transitions, 6744 flow, removed 119 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:19,664 INFO L231 Difference]: Finished difference. Result has 292 places, 407 transitions, 5802 flow [2024-06-27 18:20:19,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5688, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5802, PETRI_PLACES=292, PETRI_TRANSITIONS=407} [2024-06-27 18:20:19,664 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 237 predicate places. [2024-06-27 18:20:19,664 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 407 transitions, 5802 flow [2024-06-27 18:20:19,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:19,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:19,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:19,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:20:19,665 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:19,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:19,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1272025587, now seen corresponding path program 12 times [2024-06-27 18:20:19,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:19,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590271578] [2024-06-27 18:20:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:19,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:20,557 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 18:20:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590271578] [2024-06-27 18:20:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590271578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:20,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134698399] [2024-06-27 18:20:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:20,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:20,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:20,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:20,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:20,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:20,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 407 transitions, 5802 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:20,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:20,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:20,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:23,160 INFO L124 PetriNetUnfolderBase]: 7651/11942 cut-off events. [2024-06-27 18:20:23,160 INFO L125 PetriNetUnfolderBase]: For 772088/772147 co-relation queries the response was YES. [2024-06-27 18:20:23,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87348 conditions, 11942 events. 7651/11942 cut-off events. For 772088/772147 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 78060 event pairs, 1943 based on Foata normal form. 12/11734 useless extension candidates. Maximal degree in co-relation 87217. Up to 10124 conditions per place. [2024-06-27 18:20:23,331 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 369 selfloop transitions, 78 changer transitions 0/471 dead transitions. [2024-06-27 18:20:23,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 471 transitions, 7710 flow [2024-06-27 18:20:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 18:20:23,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-27 18:20:23,333 INFO L175 Difference]: Start difference. First operand has 292 places, 407 transitions, 5802 flow. Second operand 9 states and 236 transitions. [2024-06-27 18:20:23,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 471 transitions, 7710 flow [2024-06-27 18:20:24,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 471 transitions, 7612 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:24,510 INFO L231 Difference]: Finished difference. Result has 294 places, 410 transitions, 5953 flow [2024-06-27 18:20:24,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5704, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5953, PETRI_PLACES=294, PETRI_TRANSITIONS=410} [2024-06-27 18:20:24,510 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 239 predicate places. [2024-06-27 18:20:24,510 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 410 transitions, 5953 flow [2024-06-27 18:20:24,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:24,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:24,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:24,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:20:24,511 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:24,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1272020007, now seen corresponding path program 13 times [2024-06-27 18:20:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:24,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354985511] [2024-06-27 18:20:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:25,600 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 18:20:25,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:25,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354985511] [2024-06-27 18:20:25,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354985511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:25,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:25,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:25,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373874376] [2024-06-27 18:20:25,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:25,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:25,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:25,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:25,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:25,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 410 transitions, 5953 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:25,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:25,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:25,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:28,291 INFO L124 PetriNetUnfolderBase]: 7717/12069 cut-off events. [2024-06-27 18:20:28,291 INFO L125 PetriNetUnfolderBase]: For 803640/803699 co-relation queries the response was YES. [2024-06-27 18:20:28,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89394 conditions, 12069 events. 7717/12069 cut-off events. For 803640/803699 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 79186 event pairs, 1860 based on Foata normal form. 12/11849 useless extension candidates. Maximal degree in co-relation 89262. Up to 10346 conditions per place. [2024-06-27 18:20:28,461 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 381 selfloop transitions, 73 changer transitions 0/478 dead transitions. [2024-06-27 18:20:28,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 478 transitions, 7661 flow [2024-06-27 18:20:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-27 18:20:28,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083487940630798 [2024-06-27 18:20:28,462 INFO L175 Difference]: Start difference. First operand has 294 places, 410 transitions, 5953 flow. Second operand 11 states and 274 transitions. [2024-06-27 18:20:28,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 478 transitions, 7661 flow [2024-06-27 18:20:29,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 478 transitions, 7022 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:29,858 INFO L231 Difference]: Finished difference. Result has 295 places, 413 transitions, 5565 flow [2024-06-27 18:20:29,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5565, PETRI_PLACES=295, PETRI_TRANSITIONS=413} [2024-06-27 18:20:29,858 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 240 predicate places. [2024-06-27 18:20:29,858 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 413 transitions, 5565 flow [2024-06-27 18:20:29,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:29,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:29,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:29,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:20:29,859 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:29,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash -977158361, now seen corresponding path program 1 times [2024-06-27 18:20:29,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044207451] [2024-06-27 18:20:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:29,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:30,827 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 18:20:30,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:30,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044207451] [2024-06-27 18:20:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044207451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:30,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391827414] [2024-06-27 18:20:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:30,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:30,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:30,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:20:30,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 413 transitions, 5565 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 18:20:30,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:30,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:20:30,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:33,606 INFO L124 PetriNetUnfolderBase]: 8448/13093 cut-off events. [2024-06-27 18:20:33,607 INFO L125 PetriNetUnfolderBase]: For 825959/826015 co-relation queries the response was YES. [2024-06-27 18:20:33,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91861 conditions, 13093 events. 8448/13093 cut-off events. For 825959/826015 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 84498 event pairs, 2298 based on Foata normal form. 8/12832 useless extension candidates. Maximal degree in co-relation 91731. Up to 11669 conditions per place. [2024-06-27 18:20:33,800 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 410 selfloop transitions, 38 changer transitions 0/470 dead transitions. [2024-06-27 18:20:33,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 470 transitions, 6771 flow [2024-06-27 18:20:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-27 18:20:33,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463265306122449 [2024-06-27 18:20:33,801 INFO L175 Difference]: Start difference. First operand has 295 places, 413 transitions, 5565 flow. Second operand 10 states and 227 transitions. [2024-06-27 18:20:33,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 470 transitions, 6771 flow [2024-06-27 18:20:34,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 470 transitions, 6544 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:34,941 INFO L231 Difference]: Finished difference. Result has 299 places, 421 transitions, 5604 flow [2024-06-27 18:20:34,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5374, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5604, PETRI_PLACES=299, PETRI_TRANSITIONS=421} [2024-06-27 18:20:34,942 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 244 predicate places. [2024-06-27 18:20:34,942 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 421 transitions, 5604 flow [2024-06-27 18:20:34,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 18:20:34,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:34,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:34,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:20:34,942 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:34,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash 612825797, now seen corresponding path program 14 times [2024-06-27 18:20:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552907132] [2024-06-27 18:20:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:35,886 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 18:20:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552907132] [2024-06-27 18:20:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552907132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864923640] [2024-06-27 18:20:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:35,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:35,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:36,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:36,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 421 transitions, 5604 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:36,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:36,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:36,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:38,560 INFO L124 PetriNetUnfolderBase]: 7758/12156 cut-off events. [2024-06-27 18:20:38,560 INFO L125 PetriNetUnfolderBase]: For 824130/824189 co-relation queries the response was YES. [2024-06-27 18:20:38,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86190 conditions, 12156 events. 7758/12156 cut-off events. For 824130/824189 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 79969 event pairs, 1925 based on Foata normal form. 14/11929 useless extension candidates. Maximal degree in co-relation 86058. Up to 10493 conditions per place. [2024-06-27 18:20:38,737 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 403 selfloop transitions, 54 changer transitions 0/481 dead transitions. [2024-06-27 18:20:38,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 481 transitions, 6968 flow [2024-06-27 18:20:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 283 transitions. [2024-06-27 18:20:38,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4812925170068027 [2024-06-27 18:20:38,739 INFO L175 Difference]: Start difference. First operand has 299 places, 421 transitions, 5604 flow. Second operand 12 states and 283 transitions. [2024-06-27 18:20:38,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 481 transitions, 6968 flow [2024-06-27 18:20:40,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 481 transitions, 6810 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:40,140 INFO L231 Difference]: Finished difference. Result has 303 places, 421 transitions, 5563 flow [2024-06-27 18:20:40,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5446, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5563, PETRI_PLACES=303, PETRI_TRANSITIONS=421} [2024-06-27 18:20:40,140 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 248 predicate places. [2024-06-27 18:20:40,140 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 421 transitions, 5563 flow [2024-06-27 18:20:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:20:40,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:40,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:40,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:20:40,141 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:40,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:40,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1821173468, now seen corresponding path program 2 times [2024-06-27 18:20:40,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428956679] [2024-06-27 18:20:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:40,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428956679] [2024-06-27 18:20:40,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428956679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:40,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:40,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:40,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993907194] [2024-06-27 18:20:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:40,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:40,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:40,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:20:40,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 421 transitions, 5563 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 18:20:40,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:40,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:20:40,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:43,266 INFO L124 PetriNetUnfolderBase]: 8548/13241 cut-off events. [2024-06-27 18:20:43,266 INFO L125 PetriNetUnfolderBase]: For 850495/850575 co-relation queries the response was YES. [2024-06-27 18:20:43,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90781 conditions, 13241 events. 8548/13241 cut-off events. For 850495/850575 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 85395 event pairs, 2577 based on Foata normal form. 79/13073 useless extension candidates. Maximal degree in co-relation 90648. Up to 11930 conditions per place. [2024-06-27 18:20:43,450 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 379 selfloop transitions, 18 changer transitions 0/445 dead transitions. [2024-06-27 18:20:43,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 445 transitions, 6473 flow [2024-06-27 18:20:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:20:43,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518950437317784 [2024-06-27 18:20:43,451 INFO L175 Difference]: Start difference. First operand has 303 places, 421 transitions, 5563 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:20:43,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 445 transitions, 6473 flow [2024-06-27 18:20:44,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 445 transitions, 6158 flow, removed 23 selfloop flow, removed 14 redundant places. [2024-06-27 18:20:44,831 INFO L231 Difference]: Finished difference. Result has 296 places, 424 transitions, 5350 flow [2024-06-27 18:20:44,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5350, PETRI_PLACES=296, PETRI_TRANSITIONS=424} [2024-06-27 18:20:44,832 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 241 predicate places. [2024-06-27 18:20:44,833 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 424 transitions, 5350 flow [2024-06-27 18:20:44,833 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 18:20:44,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:44,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:44,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:20:44,833 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:44,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1821677528, now seen corresponding path program 3 times [2024-06-27 18:20:44,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:44,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388325200] [2024-06-27 18:20:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:45,475 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 18:20:45,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:45,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388325200] [2024-06-27 18:20:45,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388325200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:45,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:45,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:45,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725795418] [2024-06-27 18:20:45,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:45,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:45,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:45,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:20:45,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 424 transitions, 5350 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 18:20:45,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:45,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:20:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:47,931 INFO L124 PetriNetUnfolderBase]: 8539/13226 cut-off events. [2024-06-27 18:20:47,931 INFO L125 PetriNetUnfolderBase]: For 861378/861458 co-relation queries the response was YES. [2024-06-27 18:20:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89537 conditions, 13226 events. 8539/13226 cut-off events. For 861378/861458 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 85341 event pairs, 2569 based on Foata normal form. 79/13058 useless extension candidates. Maximal degree in co-relation 89406. Up to 11876 conditions per place. [2024-06-27 18:20:48,117 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 378 selfloop transitions, 23 changer transitions 0/449 dead transitions. [2024-06-27 18:20:48,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 449 transitions, 6238 flow [2024-06-27 18:20:48,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:48,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:20:48,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-27 18:20:48,118 INFO L175 Difference]: Start difference. First operand has 296 places, 424 transitions, 5350 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:20:48,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 449 transitions, 6238 flow [2024-06-27 18:20:48,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 449 transitions, 6099 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:48,979 INFO L231 Difference]: Finished difference. Result has 297 places, 424 transitions, 5267 flow [2024-06-27 18:20:48,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5267, PETRI_PLACES=297, PETRI_TRANSITIONS=424} [2024-06-27 18:20:48,979 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 242 predicate places. [2024-06-27 18:20:48,979 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 424 transitions, 5267 flow [2024-06-27 18:20:48,980 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 18:20:48,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:48,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:20:48,980 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1821677962, now seen corresponding path program 3 times [2024-06-27 18:20:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71856387] [2024-06-27 18:20:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:49,610 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 18:20:49,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:49,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71856387] [2024-06-27 18:20:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71856387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:49,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:49,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:49,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940339166] [2024-06-27 18:20:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:49,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:49,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:49,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:49,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:20:49,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 424 transitions, 5267 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 18:20:49,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:49,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:20:49,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:52,090 INFO L124 PetriNetUnfolderBase]: 8535/13222 cut-off events. [2024-06-27 18:20:52,090 INFO L125 PetriNetUnfolderBase]: For 868057/868140 co-relation queries the response was YES. [2024-06-27 18:20:52,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88716 conditions, 13222 events. 8535/13222 cut-off events. For 868057/868140 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 85344 event pairs, 2573 based on Foata normal form. 80/13055 useless extension candidates. Maximal degree in co-relation 88586. Up to 11860 conditions per place. [2024-06-27 18:20:52,254 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 368 selfloop transitions, 30 changer transitions 0/446 dead transitions. [2024-06-27 18:20:52,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 446 transitions, 6275 flow [2024-06-27 18:20:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:20:52,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-27 18:20:52,255 INFO L175 Difference]: Start difference. First operand has 297 places, 424 transitions, 5267 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:20:52,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 446 transitions, 6275 flow [2024-06-27 18:20:53,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 446 transitions, 6176 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:53,831 INFO L231 Difference]: Finished difference. Result has 298 places, 424 transitions, 5236 flow [2024-06-27 18:20:53,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5168, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5236, PETRI_PLACES=298, PETRI_TRANSITIONS=424} [2024-06-27 18:20:53,832 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 243 predicate places. [2024-06-27 18:20:53,832 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 424 transitions, 5236 flow [2024-06-27 18:20:53,832 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 18:20:53,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:53,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:53,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:20:53,832 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:53,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1231922003, now seen corresponding path program 1 times [2024-06-27 18:20:53,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:53,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115270777] [2024-06-27 18:20:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:54,429 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 18:20:54,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:54,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115270777] [2024-06-27 18:20:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115270777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:54,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302692828] [2024-06-27 18:20:54,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:54,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:54,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:20:54,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 424 transitions, 5236 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 18:20:54,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:54,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:20:54,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:57,168 INFO L124 PetriNetUnfolderBase]: 8945/13691 cut-off events. [2024-06-27 18:20:57,168 INFO L125 PetriNetUnfolderBase]: For 888203/888203 co-relation queries the response was YES. [2024-06-27 18:20:57,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91585 conditions, 13691 events. 8945/13691 cut-off events. For 888203/888203 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 87014 event pairs, 2582 based on Foata normal form. 1/13436 useless extension candidates. Maximal degree in co-relation 91454. Up to 12569 conditions per place. [2024-06-27 18:20:57,328 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 411 selfloop transitions, 41 changer transitions 0/460 dead transitions. [2024-06-27 18:20:57,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 460 transitions, 6454 flow [2024-06-27 18:20:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:20:57,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-27 18:20:57,329 INFO L175 Difference]: Start difference. First operand has 298 places, 424 transitions, 5236 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:20:57,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 460 transitions, 6454 flow [2024-06-27 18:20:58,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 460 transitions, 6306 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:58,599 INFO L231 Difference]: Finished difference. Result has 298 places, 430 transitions, 5263 flow [2024-06-27 18:20:58,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5088, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5263, PETRI_PLACES=298, PETRI_TRANSITIONS=430} [2024-06-27 18:20:58,600 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 243 predicate places. [2024-06-27 18:20:58,600 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 430 transitions, 5263 flow [2024-06-27 18:20:58,600 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 18:20:58,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:58,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:58,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:20:58,600 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:58,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2057638833, now seen corresponding path program 2 times [2024-06-27 18:20:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:58,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855035318] [2024-06-27 18:20:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:58,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:59,195 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 18:20:59,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:59,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855035318] [2024-06-27 18:20:59,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855035318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:59,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:59,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:59,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728075165] [2024-06-27 18:20:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:59,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:59,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:59,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:20:59,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 430 transitions, 5263 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 18:20:59,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:59,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:20:59,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:01,968 INFO L124 PetriNetUnfolderBase]: 8962/13718 cut-off events. [2024-06-27 18:21:01,968 INFO L125 PetriNetUnfolderBase]: For 912888/912888 co-relation queries the response was YES. [2024-06-27 18:21:02,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92611 conditions, 13718 events. 8962/13718 cut-off events. For 912888/912888 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 87207 event pairs, 2582 based on Foata normal form. 1/13462 useless extension candidates. Maximal degree in co-relation 92481. Up to 12587 conditions per place. [2024-06-27 18:21:02,144 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 412 selfloop transitions, 42 changer transitions 0/462 dead transitions. [2024-06-27 18:21:02,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 462 transitions, 6466 flow [2024-06-27 18:21:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:02,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:21:02,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606413994169096 [2024-06-27 18:21:02,145 INFO L175 Difference]: Start difference. First operand has 298 places, 430 transitions, 5263 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:21:02,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 462 transitions, 6466 flow [2024-06-27 18:21:03,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 462 transitions, 6355 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:03,441 INFO L231 Difference]: Finished difference. Result has 301 places, 433 transitions, 5289 flow [2024-06-27 18:21:03,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5160, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5289, PETRI_PLACES=301, PETRI_TRANSITIONS=433} [2024-06-27 18:21:03,441 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 246 predicate places. [2024-06-27 18:21:03,441 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 433 transitions, 5289 flow [2024-06-27 18:21:03,441 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 18:21:03,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:03,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:03,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:21:03,442 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:03,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:03,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2057638585, now seen corresponding path program 1 times [2024-06-27 18:21:03,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:03,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044647059] [2024-06-27 18:21:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:03,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:04,041 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 18:21:04,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:04,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044647059] [2024-06-27 18:21:04,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044647059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:04,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:04,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:04,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895707002] [2024-06-27 18:21:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:04,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:04,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:04,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:21:04,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 433 transitions, 5289 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 18:21:04,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:04,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:21:04,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:06,611 INFO L124 PetriNetUnfolderBase]: 8646/13303 cut-off events. [2024-06-27 18:21:06,612 INFO L125 PetriNetUnfolderBase]: For 934678/934758 co-relation queries the response was YES. [2024-06-27 18:21:06,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90181 conditions, 13303 events. 8646/13303 cut-off events. For 934678/934758 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 84943 event pairs, 2537 based on Foata normal form. 79/13150 useless extension candidates. Maximal degree in co-relation 90050. Up to 11887 conditions per place. [2024-06-27 18:21:06,805 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 385 selfloop transitions, 38 changer transitions 0/474 dead transitions. [2024-06-27 18:21:06,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 474 transitions, 6484 flow [2024-06-27 18:21:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:21:06,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-06-27 18:21:06,806 INFO L175 Difference]: Start difference. First operand has 301 places, 433 transitions, 5289 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:21:06,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 474 transitions, 6484 flow [2024-06-27 18:21:08,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 474 transitions, 6402 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:08,596 INFO L231 Difference]: Finished difference. Result has 304 places, 439 transitions, 5376 flow [2024-06-27 18:21:08,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5207, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5376, PETRI_PLACES=304, PETRI_TRANSITIONS=439} [2024-06-27 18:21:08,597 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 249 predicate places. [2024-06-27 18:21:08,597 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 439 transitions, 5376 flow [2024-06-27 18:21:08,597 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 18:21:08,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:08,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:08,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:21:08,597 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:08,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:08,597 INFO L85 PathProgramCache]: Analyzing trace with hash -827926397, now seen corresponding path program 2 times [2024-06-27 18:21:08,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:08,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886722277] [2024-06-27 18:21:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:08,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:09,219 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 18:21:09,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:09,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886722277] [2024-06-27 18:21:09,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886722277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:09,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:09,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:09,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182302961] [2024-06-27 18:21:09,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:09,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:09,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:09,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:09,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:09,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:21:09,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 439 transitions, 5376 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 18:21:09,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:09,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:21:09,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:11,863 INFO L124 PetriNetUnfolderBase]: 8697/13391 cut-off events. [2024-06-27 18:21:11,863 INFO L125 PetriNetUnfolderBase]: For 962480/962563 co-relation queries the response was YES. [2024-06-27 18:21:12,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91858 conditions, 13391 events. 8697/13391 cut-off events. For 962480/962563 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 85691 event pairs, 2508 based on Foata normal form. 81/13234 useless extension candidates. Maximal degree in co-relation 91726. Up to 11929 conditions per place. [2024-06-27 18:21:12,068 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 376 selfloop transitions, 43 changer transitions 0/470 dead transitions. [2024-06-27 18:21:12,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 470 transitions, 6496 flow [2024-06-27 18:21:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:21:12,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478134110787172 [2024-06-27 18:21:12,069 INFO L175 Difference]: Start difference. First operand has 304 places, 439 transitions, 5376 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:21:12,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 470 transitions, 6496 flow [2024-06-27 18:21:14,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 470 transitions, 6435 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:14,024 INFO L231 Difference]: Finished difference. Result has 308 places, 442 transitions, 5454 flow [2024-06-27 18:21:14,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5317, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5454, PETRI_PLACES=308, PETRI_TRANSITIONS=442} [2024-06-27 18:21:14,024 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 253 predicate places. [2024-06-27 18:21:14,024 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 442 transitions, 5454 flow [2024-06-27 18:21:14,024 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 18:21:14,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:14,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:14,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:21:14,025 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:14,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1821463473, now seen corresponding path program 3 times [2024-06-27 18:21:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:14,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413386862] [2024-06-27 18:21:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:14,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:14,619 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 18:21:14,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413386862] [2024-06-27 18:21:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413386862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:14,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690393449] [2024-06-27 18:21:14,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:14,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:14,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:14,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:21:14,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 442 transitions, 5454 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 18:21:14,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:14,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:21:14,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:17,394 INFO L124 PetriNetUnfolderBase]: 9061/13878 cut-off events. [2024-06-27 18:21:17,394 INFO L125 PetriNetUnfolderBase]: For 978497/978500 co-relation queries the response was YES. [2024-06-27 18:21:17,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94809 conditions, 13878 events. 9061/13878 cut-off events. For 978497/978500 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 88434 event pairs, 2555 based on Foata normal form. 1/13615 useless extension candidates. Maximal degree in co-relation 94675. Up to 12722 conditions per place. [2024-06-27 18:21:17,604 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 416 selfloop transitions, 42 changer transitions 0/466 dead transitions. [2024-06-27 18:21:17,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 466 transitions, 6451 flow [2024-06-27 18:21:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:17,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:21:17,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-06-27 18:21:17,605 INFO L175 Difference]: Start difference. First operand has 308 places, 442 transitions, 5454 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:21:17,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 466 transitions, 6451 flow [2024-06-27 18:21:19,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 466 transitions, 6333 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:19,437 INFO L231 Difference]: Finished difference. Result has 311 places, 442 transitions, 5427 flow [2024-06-27 18:21:19,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5427, PETRI_PLACES=311, PETRI_TRANSITIONS=442} [2024-06-27 18:21:19,437 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 256 predicate places. [2024-06-27 18:21:19,437 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 442 transitions, 5427 flow [2024-06-27 18:21:19,438 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 18:21:19,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:19,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:19,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:21:19,438 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:19,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1821463225, now seen corresponding path program 3 times [2024-06-27 18:21:19,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:19,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370133284] [2024-06-27 18:21:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:19,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:20,045 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 18:21:20,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:20,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370133284] [2024-06-27 18:21:20,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370133284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:20,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:20,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:20,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757547094] [2024-06-27 18:21:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:20,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:20,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:20,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:20,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:20,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:21:20,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 442 transitions, 5427 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 18:21:20,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:20,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:21:20,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:22,734 INFO L124 PetriNetUnfolderBase]: 8685/13375 cut-off events. [2024-06-27 18:21:22,734 INFO L125 PetriNetUnfolderBase]: For 993057/993140 co-relation queries the response was YES. [2024-06-27 18:21:22,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91615 conditions, 13375 events. 8685/13375 cut-off events. For 993057/993140 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 85675 event pairs, 2506 based on Foata normal form. 81/13218 useless extension candidates. Maximal degree in co-relation 91480. Up to 11919 conditions per place. [2024-06-27 18:21:22,926 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 381 selfloop transitions, 41 changer transitions 0/473 dead transitions. [2024-06-27 18:21:22,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 473 transitions, 6384 flow [2024-06-27 18:21:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:21:22,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839650145772595 [2024-06-27 18:21:22,927 INFO L175 Difference]: Start difference. First operand has 311 places, 442 transitions, 5427 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:21:22,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 473 transitions, 6384 flow [2024-06-27 18:21:24,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 473 transitions, 6236 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:24,326 INFO L231 Difference]: Finished difference. Result has 311 places, 442 transitions, 5368 flow [2024-06-27 18:21:24,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5279, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5368, PETRI_PLACES=311, PETRI_TRANSITIONS=442} [2024-06-27 18:21:24,327 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 256 predicate places. [2024-06-27 18:21:24,327 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 442 transitions, 5368 flow [2024-06-27 18:21:24,327 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 18:21:24,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:24,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:24,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:21:24,327 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:24,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1253388418, now seen corresponding path program 1 times [2024-06-27 18:21:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396575878] [2024-06-27 18:21:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:25,336 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 18:21:25,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:25,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396575878] [2024-06-27 18:21:25,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396575878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:25,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:25,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:25,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576191517] [2024-06-27 18:21:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:25,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:25,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:25,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:25,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:25,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:25,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 442 transitions, 5368 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:25,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:25,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:25,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:28,032 INFO L124 PetriNetUnfolderBase]: 8169/12380 cut-off events. [2024-06-27 18:21:28,032 INFO L125 PetriNetUnfolderBase]: For 1077994/1078027 co-relation queries the response was YES. [2024-06-27 18:21:28,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91090 conditions, 12380 events. 8169/12380 cut-off events. For 1077994/1078027 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 77845 event pairs, 829 based on Foata normal form. 18/12267 useless extension candidates. Maximal degree in co-relation 90954. Up to 8034 conditions per place. [2024-06-27 18:21:28,216 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 271 selfloop transitions, 231 changer transitions 0/529 dead transitions. [2024-06-27 18:21:28,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 529 transitions, 7342 flow [2024-06-27 18:21:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-06-27 18:21:28,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612244897959183 [2024-06-27 18:21:28,217 INFO L175 Difference]: Start difference. First operand has 311 places, 442 transitions, 5368 flow. Second operand 10 states and 275 transitions. [2024-06-27 18:21:28,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 529 transitions, 7342 flow [2024-06-27 18:21:30,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 529 transitions, 7226 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:30,265 INFO L231 Difference]: Finished difference. Result has 315 places, 446 transitions, 5841 flow [2024-06-27 18:21:30,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5841, PETRI_PLACES=315, PETRI_TRANSITIONS=446} [2024-06-27 18:21:30,266 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 260 predicate places. [2024-06-27 18:21:30,266 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 446 transitions, 5841 flow [2024-06-27 18:21:30,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:30,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:30,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:30,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:21:30,266 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:30,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1537821514, now seen corresponding path program 2 times [2024-06-27 18:21:30,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:30,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784970071] [2024-06-27 18:21:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:30,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:31,377 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 18:21:31,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784970071] [2024-06-27 18:21:31,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784970071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:31,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:31,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:31,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722947653] [2024-06-27 18:21:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:31,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:31,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:31,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:31,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 446 transitions, 5841 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:31,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:31,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:31,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:34,286 INFO L124 PetriNetUnfolderBase]: 8617/13087 cut-off events. [2024-06-27 18:21:34,286 INFO L125 PetriNetUnfolderBase]: For 1178482/1178515 co-relation queries the response was YES. [2024-06-27 18:21:34,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99510 conditions, 13087 events. 8617/13087 cut-off events. For 1178482/1178515 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 83481 event pairs, 1282 based on Foata normal form. 18/12990 useless extension candidates. Maximal degree in co-relation 99372. Up to 9703 conditions per place. [2024-06-27 18:21:34,487 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 296 selfloop transitions, 220 changer transitions 0/543 dead transitions. [2024-06-27 18:21:34,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 543 transitions, 7913 flow [2024-06-27 18:21:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 303 transitions. [2024-06-27 18:21:34,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562152133580705 [2024-06-27 18:21:34,489 INFO L175 Difference]: Start difference. First operand has 315 places, 446 transitions, 5841 flow. Second operand 11 states and 303 transitions. [2024-06-27 18:21:34,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 543 transitions, 7913 flow [2024-06-27 18:21:36,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 543 transitions, 7597 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:36,461 INFO L231 Difference]: Finished difference. Result has 323 places, 453 transitions, 6145 flow [2024-06-27 18:21:36,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5531, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6145, PETRI_PLACES=323, PETRI_TRANSITIONS=453} [2024-06-27 18:21:36,461 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 268 predicate places. [2024-06-27 18:21:36,461 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 453 transitions, 6145 flow [2024-06-27 18:21:36,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:36,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:36,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:36,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:21:36,462 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:36,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:36,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1537701544, now seen corresponding path program 3 times [2024-06-27 18:21:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:36,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78974844] [2024-06-27 18:21:36,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:36,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:37,714 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 18:21:37,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:37,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78974844] [2024-06-27 18:21:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78974844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639034461] [2024-06-27 18:21:37,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:37,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:37,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:37,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:37,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 453 transitions, 6145 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:37,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:37,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:37,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:41,122 INFO L124 PetriNetUnfolderBase]: 9230/14453 cut-off events. [2024-06-27 18:21:41,123 INFO L125 PetriNetUnfolderBase]: For 1323948/1324010 co-relation queries the response was YES. [2024-06-27 18:21:41,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107166 conditions, 14453 events. 9230/14453 cut-off events. For 1323948/1324010 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 97433 event pairs, 1788 based on Foata normal form. 63/14207 useless extension candidates. Maximal degree in co-relation 107024. Up to 10824 conditions per place. [2024-06-27 18:21:41,355 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 414 selfloop transitions, 142 changer transitions 0/583 dead transitions. [2024-06-27 18:21:41,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 583 transitions, 8050 flow [2024-06-27 18:21:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:21:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:21:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 343 transitions. [2024-06-27 18:21:41,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-06-27 18:21:41,356 INFO L175 Difference]: Start difference. First operand has 323 places, 453 transitions, 6145 flow. Second operand 13 states and 343 transitions. [2024-06-27 18:21:41,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 583 transitions, 8050 flow [2024-06-27 18:21:43,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 583 transitions, 7706 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:43,461 INFO L231 Difference]: Finished difference. Result has 332 places, 487 transitions, 6666 flow [2024-06-27 18:21:43,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5831, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6666, PETRI_PLACES=332, PETRI_TRANSITIONS=487} [2024-06-27 18:21:43,462 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 277 predicate places. [2024-06-27 18:21:43,462 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 487 transitions, 6666 flow [2024-06-27 18:21:43,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:43,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:43,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:43,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:21:43,462 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:43,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1195180648, now seen corresponding path program 4 times [2024-06-27 18:21:43,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:43,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165100049] [2024-06-27 18:21:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:45,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165100049] [2024-06-27 18:21:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165100049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:45,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:45,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267719004] [2024-06-27 18:21:45,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:45,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:45,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:45,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:45,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:45,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 487 transitions, 6666 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:45,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:45,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:45,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:48,621 INFO L124 PetriNetUnfolderBase]: 9164/13948 cut-off events. [2024-06-27 18:21:48,622 INFO L125 PetriNetUnfolderBase]: For 1197218/1197251 co-relation queries the response was YES. [2024-06-27 18:21:48,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107789 conditions, 13948 events. 9164/13948 cut-off events. For 1197218/1197251 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 90253 event pairs, 1407 based on Foata normal form. 18/13849 useless extension candidates. Maximal degree in co-relation 107643. Up to 10596 conditions per place. [2024-06-27 18:21:48,818 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 300 selfloop transitions, 242 changer transitions 0/569 dead transitions. [2024-06-27 18:21:48,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 569 transitions, 8396 flow [2024-06-27 18:21:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-27 18:21:48,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-27 18:21:48,819 INFO L175 Difference]: Start difference. First operand has 332 places, 487 transitions, 6666 flow. Second operand 10 states and 273 transitions. [2024-06-27 18:21:48,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 569 transitions, 8396 flow [2024-06-27 18:21:51,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 569 transitions, 8106 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:51,405 INFO L231 Difference]: Finished difference. Result has 334 places, 490 transitions, 6946 flow [2024-06-27 18:21:51,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6384, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6946, PETRI_PLACES=334, PETRI_TRANSITIONS=490} [2024-06-27 18:21:51,406 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 279 predicate places. [2024-06-27 18:21:51,406 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 490 transitions, 6946 flow [2024-06-27 18:21:51,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:51,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:51,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:51,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:21:51,406 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:51,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1496734112, now seen corresponding path program 5 times [2024-06-27 18:21:51,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:51,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285400359] [2024-06-27 18:21:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:52,537 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 18:21:52,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:52,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285400359] [2024-06-27 18:21:52,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285400359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:52,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:52,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:52,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985926378] [2024-06-27 18:21:52,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:52,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:52,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:52,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:52,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:52,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:52,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 490 transitions, 6946 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:52,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:52,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:52,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:56,284 INFO L124 PetriNetUnfolderBase]: 9545/15029 cut-off events. [2024-06-27 18:21:56,284 INFO L125 PetriNetUnfolderBase]: For 1225760/1225822 co-relation queries the response was YES. [2024-06-27 18:21:56,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111111 conditions, 15029 events. 9545/15029 cut-off events. For 1225760/1225822 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 103190 event pairs, 1933 based on Foata normal form. 19/14723 useless extension candidates. Maximal degree in co-relation 110963. Up to 12018 conditions per place. [2024-06-27 18:21:56,619 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 456 selfloop transitions, 83 changer transitions 0/566 dead transitions. [2024-06-27 18:21:56,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 566 transitions, 8380 flow [2024-06-27 18:21:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-06-27 18:21:56,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2024-06-27 18:21:56,620 INFO L175 Difference]: Start difference. First operand has 334 places, 490 transitions, 6946 flow. Second operand 10 states and 268 transitions. [2024-06-27 18:21:56,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 566 transitions, 8380 flow [2024-06-27 18:21:59,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 566 transitions, 7856 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:59,077 INFO L231 Difference]: Finished difference. Result has 337 places, 494 transitions, 6693 flow [2024-06-27 18:21:59,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6693, PETRI_PLACES=337, PETRI_TRANSITIONS=494} [2024-06-27 18:21:59,078 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 282 predicate places. [2024-06-27 18:21:59,078 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 494 transitions, 6693 flow [2024-06-27 18:21:59,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:21:59,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:59,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:59,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:21:59,078 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:59,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1492265462, now seen corresponding path program 6 times [2024-06-27 18:21:59,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:59,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207158542] [2024-06-27 18:21:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:00,151 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 18:22:00,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:00,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207158542] [2024-06-27 18:22:00,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207158542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:00,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:00,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357241524] [2024-06-27 18:22:00,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:00,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:00,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:00,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:22:00,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 494 transitions, 6693 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:22:00,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:00,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:22:00,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:04,072 INFO L124 PetriNetUnfolderBase]: 9676/14752 cut-off events. [2024-06-27 18:22:04,072 INFO L125 PetriNetUnfolderBase]: For 1248713/1248746 co-relation queries the response was YES. [2024-06-27 18:22:04,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111519 conditions, 14752 events. 9676/14752 cut-off events. For 1248713/1248746 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 96715 event pairs, 1540 based on Foata normal form. 18/14668 useless extension candidates. Maximal degree in co-relation 111369. Up to 12096 conditions per place. [2024-06-27 18:22:04,281 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 392 selfloop transitions, 161 changer transitions 0/580 dead transitions. [2024-06-27 18:22:04,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 580 transitions, 8593 flow [2024-06-27 18:22:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-27 18:22:04,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-27 18:22:04,282 INFO L175 Difference]: Start difference. First operand has 337 places, 494 transitions, 6693 flow. Second operand 10 states and 273 transitions. [2024-06-27 18:22:04,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 580 transitions, 8593 flow [2024-06-27 18:22:07,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 580 transitions, 8408 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:07,645 INFO L231 Difference]: Finished difference. Result has 341 places, 502 transitions, 7050 flow [2024-06-27 18:22:07,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6508, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7050, PETRI_PLACES=341, PETRI_TRANSITIONS=502} [2024-06-27 18:22:07,645 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 286 predicate places. [2024-06-27 18:22:07,645 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 502 transitions, 7050 flow [2024-06-27 18:22:07,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:22:07,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:07,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:07,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:22:07,646 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:07,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:07,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1149624596, now seen corresponding path program 7 times [2024-06-27 18:22:07,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:07,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464985836] [2024-06-27 18:22:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:07,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:08,832 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 18:22:08,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464985836] [2024-06-27 18:22:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464985836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:08,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982647592] [2024-06-27 18:22:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:08,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:08,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:22:08,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 502 transitions, 7050 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:22:08,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:08,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:22:08,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:12,525 INFO L124 PetriNetUnfolderBase]: 9850/15040 cut-off events. [2024-06-27 18:22:12,525 INFO L125 PetriNetUnfolderBase]: For 1288259/1288292 co-relation queries the response was YES. [2024-06-27 18:22:12,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114146 conditions, 15040 events. 9850/15040 cut-off events. For 1288259/1288292 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 98970 event pairs, 1571 based on Foata normal form. 18/14956 useless extension candidates. Maximal degree in co-relation 113994. Up to 11584 conditions per place. [2024-06-27 18:22:12,760 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 387 selfloop transitions, 170 changer transitions 0/584 dead transitions. [2024-06-27 18:22:12,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 584 transitions, 8914 flow [2024-06-27 18:22:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2024-06-27 18:22:12,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551020408163265 [2024-06-27 18:22:12,762 INFO L175 Difference]: Start difference. First operand has 341 places, 502 transitions, 7050 flow. Second operand 10 states and 272 transitions. [2024-06-27 18:22:12,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 584 transitions, 8914 flow [2024-06-27 18:22:15,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 584 transitions, 8299 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-06-27 18:22:15,889 INFO L231 Difference]: Finished difference. Result has 344 places, 506 transitions, 6934 flow [2024-06-27 18:22:15,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6435, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6934, PETRI_PLACES=344, PETRI_TRANSITIONS=506} [2024-06-27 18:22:15,890 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 289 predicate places. [2024-06-27 18:22:15,890 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 506 transitions, 6934 flow [2024-06-27 18:22:15,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:22:15,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:15,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:15,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:22:15,890 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:15,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1463060706, now seen corresponding path program 1 times [2024-06-27 18:22:15,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:15,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988570898] [2024-06-27 18:22:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:16,996 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 18:22:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:16,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988570898] [2024-06-27 18:22:16,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988570898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:16,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512981895] [2024-06-27 18:22:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:16,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:17,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:22:17,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 506 transitions, 6934 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:17,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:17,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:22:17,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:20,993 INFO L124 PetriNetUnfolderBase]: 10960/17048 cut-off events. [2024-06-27 18:22:20,993 INFO L125 PetriNetUnfolderBase]: For 1292267/1292318 co-relation queries the response was YES. [2024-06-27 18:22:21,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120581 conditions, 17048 events. 10960/17048 cut-off events. For 1292267/1292318 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 116022 event pairs, 2903 based on Foata normal form. 48/16718 useless extension candidates. Maximal degree in co-relation 120429. Up to 15115 conditions per place. [2024-06-27 18:22:21,262 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 444 selfloop transitions, 64 changer transitions 0/567 dead transitions. [2024-06-27 18:22:21,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 567 transitions, 8598 flow [2024-06-27 18:22:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:22:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:22:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:22:21,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-27 18:22:21,263 INFO L175 Difference]: Start difference. First operand has 344 places, 506 transitions, 6934 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:22:21,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 567 transitions, 8598 flow [2024-06-27 18:22:23,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 567 transitions, 8319 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:23,967 INFO L231 Difference]: Finished difference. Result has 348 places, 514 transitions, 6923 flow [2024-06-27 18:22:23,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6655, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6923, PETRI_PLACES=348, PETRI_TRANSITIONS=514} [2024-06-27 18:22:23,968 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 293 predicate places. [2024-06-27 18:22:23,968 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 514 transitions, 6923 flow [2024-06-27 18:22:23,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:23,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:23,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:23,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:22:23,968 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:23,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1462732013, now seen corresponding path program 1 times [2024-06-27 18:22:23,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:23,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435031270] [2024-06-27 18:22:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:24,850 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 18:22:24,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:24,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435031270] [2024-06-27 18:22:24,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435031270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:24,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:24,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569244076] [2024-06-27 18:22:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:24,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:22:24,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 514 transitions, 6923 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:24,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:24,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:22:24,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:28,839 INFO L124 PetriNetUnfolderBase]: 11257/17494 cut-off events. [2024-06-27 18:22:28,839 INFO L125 PetriNetUnfolderBase]: For 1355204/1355253 co-relation queries the response was YES. [2024-06-27 18:22:29,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124601 conditions, 17494 events. 11257/17494 cut-off events. For 1355204/1355253 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 119298 event pairs, 2961 based on Foata normal form. 52/17157 useless extension candidates. Maximal degree in co-relation 124447. Up to 15076 conditions per place. [2024-06-27 18:22:29,109 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 451 selfloop transitions, 72 changer transitions 0/582 dead transitions. [2024-06-27 18:22:29,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 582 transitions, 8721 flow [2024-06-27 18:22:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 18:22:29,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280612244897959 [2024-06-27 18:22:29,110 INFO L175 Difference]: Start difference. First operand has 348 places, 514 transitions, 6923 flow. Second operand 8 states and 207 transitions. [2024-06-27 18:22:29,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 582 transitions, 8721 flow [2024-06-27 18:22:32,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 582 transitions, 8574 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:32,595 INFO L231 Difference]: Finished difference. Result has 353 places, 534 transitions, 7264 flow [2024-06-27 18:22:32,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6776, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7264, PETRI_PLACES=353, PETRI_TRANSITIONS=534} [2024-06-27 18:22:32,596 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 298 predicate places. [2024-06-27 18:22:32,596 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 534 transitions, 7264 flow [2024-06-27 18:22:32,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:32,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:32,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:32,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:22:32,597 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:32,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:32,597 INFO L85 PathProgramCache]: Analyzing trace with hash 275289270, now seen corresponding path program 8 times [2024-06-27 18:22:32,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:32,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509473571] [2024-06-27 18:22:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:33,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:33,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509473571] [2024-06-27 18:22:33,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509473571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:33,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:33,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:33,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927087115] [2024-06-27 18:22:33,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:33,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:33,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:34,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:22:34,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 534 transitions, 7264 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 18:22:34,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:34,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:22:34,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand