./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix052_pso.opt_rmo.opt_tso.opt.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 18:37:44,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:37:44,448 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:37:44,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:37:44,453 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:37:44,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:37:44,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:37:44,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:37:44,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:37:44,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:37:44,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:37:44,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:37:44,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:37:44,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:37:44,500 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:37:44,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:37:44,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:37:44,501 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:37:44,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:37:44,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:37:44,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:37:44,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:37:44,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:37:44,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:37:44,503 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:37:44,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:37:44,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:37:44,504 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:37:44,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:37:44,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:37:44,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:37:44,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:37:44,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:37:44,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:37:44,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:37:44,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:37:44,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:37:44,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:37:44,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:37:44,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:37:44,513 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:37:44,514 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:37:44,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:37:44,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:37:44,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:37:44,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:37:44,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:37:44,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:37:44,841 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:37:44,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-27 18:37:46,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:37:46,282 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:37:46,282 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-27 18:37:46,303 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650818716/b40e4ef8c5b8438791b50008fbb5e395/FLAG2e40c3215 [2024-06-27 18:37:46,316 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650818716/b40e4ef8c5b8438791b50008fbb5e395 [2024-06-27 18:37:46,318 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:37:46,318 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:37:46,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml [2024-06-27 18:37:46,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:37:46,513 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:37:46,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:37:46,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:37:46,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:37:46,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:37:46" (1/2) ... [2024-06-27 18:37:46,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e8f06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:46, skipping insertion in model container [2024-06-27 18:37:46,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:37:46" (1/2) ... [2024-06-27 18:37:46,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7632d0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:46, skipping insertion in model container [2024-06-27 18:37:46,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:46" (2/2) ... [2024-06-27 18:37:46,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e8f06f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:46, skipping insertion in model container [2024-06-27 18:37:46,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:46" (2/2) ... [2024-06-27 18:37:46,523 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:37:46,608 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:37:46,609 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] (((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:37:46,610 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:37:46,610 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:37:46,610 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:37:46,611 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-27 18:37:46,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:37:46,821 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i[964,977] [2024-06-27 18:37:46,974 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:37:46,983 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:37:47,025 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i[964,977] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:37:47,125 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:37:47,157 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:37:47,158 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47 WrapperNode [2024-06-27 18:37:47,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:37:47,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:37:47,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:37:47,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:37:47,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,217 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-27 18:37:47,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:37:47,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:37:47,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:37:47,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:37:47,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,259 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 18:37:47,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:37:47,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:37:47,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:37:47,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:37:47,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:37:47,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:37:47,324 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 18:37:47,349 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 18:37:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:37:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:37:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:37:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:37:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:37:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:37:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:37:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:37:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:37:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:37:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:37:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:37:47,370 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 18:37:47,563 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:37:47,566 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:37:47,862 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:37:47,862 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:37:48,043 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:37:48,044 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:37:48,044 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:37:48 BoogieIcfgContainer [2024-06-27 18:37:48,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:37:48,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:37:48,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:37:48,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:37:48,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:37:46" (1/4) ... [2024-06-27 18:37:48,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd07246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:37:48, skipping insertion in model container [2024-06-27 18:37:48,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:46" (2/4) ... [2024-06-27 18:37:48,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd07246 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:37:48, skipping insertion in model container [2024-06-27 18:37:48,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47" (3/4) ... [2024-06-27 18:37:48,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd07246 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:37:48, skipping insertion in model container [2024-06-27 18:37:48,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:37:48" (4/4) ... [2024-06-27 18:37:48,055 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-27 18:37:48,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:37:48,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:37:48,073 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:37:48,133 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:37:48,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:37:48,213 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:37:48,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:37:48,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 18:37:48,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:37:48,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:37:48,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:37:48,238 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;@e87ff6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:37:48,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:37:48,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:37:48,243 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:37:48,243 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:37:48,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:48,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:37:48,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:48,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:48,251 INFO L85 PathProgramCache]: Analyzing trace with hash 338355012, now seen corresponding path program 1 times [2024-06-27 18:37:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:48,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846696327] [2024-06-27 18:37:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:48,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:49,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846696327] [2024-06-27 18:37:49,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846696327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:49,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:49,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:37:49,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175859645] [2024-06-27 18:37:49,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:49,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:37:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:37:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:37:49,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 18:37:49,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 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 18:37:49,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:49,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 18:37:49,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:49,976 INFO L124 PetriNetUnfolderBase]: 2575/3930 cut-off events. [2024-06-27 18:37:49,976 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 18:37:49,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7740 conditions, 3930 events. 2575/3930 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 22519 event pairs, 1492 based on Foata normal form. 151/3868 useless extension candidates. Maximal degree in co-relation 7728. Up to 3731 conditions per place. [2024-06-27 18:37:50,007 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 39 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 18:37:50,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 217 flow [2024-06-27 18:37:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:37:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:37:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-27 18:37:50,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-06-27 18:37:50,023 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 97 transitions. [2024-06-27 18:37:50,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 217 flow [2024-06-27 18:37:50,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:50,032 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-27 18:37:50,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 18:37:50,039 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:37:50,039 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-27 18:37:50,040 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 18:37:50,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:50,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:50,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:37:50,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:50,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:50,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1257853117, now seen corresponding path program 1 times [2024-06-27 18:37:50,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:50,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174147208] [2024-06-27 18:37:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:50,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:50,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:50,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174147208] [2024-06-27 18:37:50,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174147208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:50,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:50,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:37:50,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698031050] [2024-06-27 18:37:50,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:50,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:37:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:37:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:37:50,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 18:37:50,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:50,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:50,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 18:37:50,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:51,365 INFO L124 PetriNetUnfolderBase]: 2998/4542 cut-off events. [2024-06-27 18:37:51,365 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-06-27 18:37:51,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 4542 events. 2998/4542 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26263 event pairs, 1576 based on Foata normal form. 3/4328 useless extension candidates. Maximal degree in co-relation 10040. Up to 4303 conditions per place. [2024-06-27 18:37:51,396 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 51 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-27 18:37:51,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 313 flow [2024-06-27 18:37:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:37:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:37:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 18:37:51,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6684782608695652 [2024-06-27 18:37:51,401 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 123 transitions. [2024-06-27 18:37:51,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 313 flow [2024-06-27 18:37:51,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:37:51,404 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 173 flow [2024-06-27 18:37:51,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-27 18:37:51,406 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-27 18:37:51,406 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 173 flow [2024-06-27 18:37:51,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:51,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:51,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:51,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:37:51,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:51,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash -338739853, now seen corresponding path program 1 times [2024-06-27 18:37:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:51,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026564113] [2024-06-27 18:37:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:52,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026564113] [2024-06-27 18:37:52,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026564113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:52,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:52,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:37:52,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517270932] [2024-06-27 18:37:52,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:52,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:37:52,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:37:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:37:52,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 18:37:52,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 18:37:52,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:52,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 18:37:52,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:52,779 INFO L124 PetriNetUnfolderBase]: 3057/4517 cut-off events. [2024-06-27 18:37:52,780 INFO L125 PetriNetUnfolderBase]: For 1732/1732 co-relation queries the response was YES. [2024-06-27 18:37:52,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 4517 events. 3057/4517 cut-off events. For 1732/1732 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24900 event pairs, 871 based on Foata normal form. 7/4327 useless extension candidates. Maximal degree in co-relation 11223. Up to 4167 conditions per place. [2024-06-27 18:37:52,809 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 71 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-27 18:37:52,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 525 flow [2024-06-27 18:37:52,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:37:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:37:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-27 18:37:52,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7130434782608696 [2024-06-27 18:37:52,815 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 173 flow. Second operand 5 states and 164 transitions. [2024-06-27 18:37:52,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 525 flow [2024-06-27 18:37:52,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 506 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:37:52,821 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 302 flow [2024-06-27 18:37:52,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-06-27 18:37:52,823 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-27 18:37:52,823 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 302 flow [2024-06-27 18:37:52,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 18:37:52,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:52,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:52,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:37:52,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:52,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 31461714, now seen corresponding path program 1 times [2024-06-27 18:37:52,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:52,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356127188] [2024-06-27 18:37:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:52,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:53,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:53,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356127188] [2024-06-27 18:37:53,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356127188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:53,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:53,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:37:53,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337563117] [2024-06-27 18:37:53,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:53,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:37:53,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:37:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:37:53,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 18:37:53,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 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 18:37:53,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:53,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 18:37:53,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:54,447 INFO L124 PetriNetUnfolderBase]: 3299/5513 cut-off events. [2024-06-27 18:37:54,447 INFO L125 PetriNetUnfolderBase]: For 5237/5237 co-relation queries the response was YES. [2024-06-27 18:37:54,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15179 conditions, 5513 events. 3299/5513 cut-off events. For 5237/5237 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 35788 event pairs, 1092 based on Foata normal form. 26/5110 useless extension candidates. Maximal degree in co-relation 15162. Up to 4211 conditions per place. [2024-06-27 18:37:54,490 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 83 selfloop transitions, 24 changer transitions 0/119 dead transitions. [2024-06-27 18:37:54,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 119 transitions, 680 flow [2024-06-27 18:37:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:37:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:37:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-27 18:37:54,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-06-27 18:37:54,492 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 302 flow. Second operand 6 states and 194 transitions. [2024-06-27 18:37:54,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 119 transitions, 680 flow [2024-06-27 18:37:54,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 119 transitions, 668 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:37:54,503 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 369 flow [2024-06-27 18:37:54,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2024-06-27 18:37:54,505 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-27 18:37:54,505 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 369 flow [2024-06-27 18:37:54,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 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 18:37:54,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:54,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:54,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:37:54,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:54,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -609339275, now seen corresponding path program 1 times [2024-06-27 18:37:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:54,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464001447] [2024-06-27 18:37:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:54,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:55,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464001447] [2024-06-27 18:37:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464001447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:55,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:37:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122516200] [2024-06-27 18:37:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:55,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:37:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:37:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:37:55,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:37:55,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 369 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 18:37:55,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:55,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:37:55,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:55,865 INFO L124 PetriNetUnfolderBase]: 3263/4998 cut-off events. [2024-06-27 18:37:55,866 INFO L125 PetriNetUnfolderBase]: For 6603/6603 co-relation queries the response was YES. [2024-06-27 18:37:55,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15953 conditions, 4998 events. 3263/4998 cut-off events. For 6603/6603 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 28642 event pairs, 885 based on Foata normal form. 4/4711 useless extension candidates. Maximal degree in co-relation 15932. Up to 4658 conditions per place. [2024-06-27 18:37:55,903 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 67 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-06-27 18:37:55,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 573 flow [2024-06-27 18:37:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:37:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:37:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-27 18:37:55,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739130434782609 [2024-06-27 18:37:55,905 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 369 flow. Second operand 5 states and 132 transitions. [2024-06-27 18:37:55,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 573 flow [2024-06-27 18:37:55,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 512 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:55,922 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 337 flow [2024-06-27 18:37:55,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-27 18:37:55,925 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-06-27 18:37:55,931 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 337 flow [2024-06-27 18:37:55,932 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 18:37:55,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:55,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:55,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:37:55,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:55,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1724956916, now seen corresponding path program 1 times [2024-06-27 18:37:55,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:55,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328374399] [2024-06-27 18:37:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:55,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:56,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328374399] [2024-06-27 18:37:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328374399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:56,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:56,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:37:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195031187] [2024-06-27 18:37:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:56,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:37:56,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:37:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:37:56,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 46 [2024-06-27 18:37:56,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 18:37:56,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:56,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 46 [2024-06-27 18:37:56,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:56,293 INFO L124 PetriNetUnfolderBase]: 1055/2247 cut-off events. [2024-06-27 18:37:56,294 INFO L125 PetriNetUnfolderBase]: For 2229/2444 co-relation queries the response was YES. [2024-06-27 18:37:56,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5214 conditions, 2247 events. 1055/2247 cut-off events. For 2229/2444 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17021 event pairs, 395 based on Foata normal form. 4/2063 useless extension candidates. Maximal degree in co-relation 5192. Up to 1260 conditions per place. [2024-06-27 18:37:56,311 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 25 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-06-27 18:37:56,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 363 flow [2024-06-27 18:37:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:37:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:37:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 18:37:56,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2024-06-27 18:37:56,313 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 337 flow. Second operand 3 states and 103 transitions. [2024-06-27 18:37:56,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 363 flow [2024-06-27 18:37:56,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 341 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:56,317 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 275 flow [2024-06-27 18:37:56,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-27 18:37:56,319 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-27 18:37:56,320 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 275 flow [2024-06-27 18:37:56,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 18:37:56,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:56,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:56,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:37:56,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:56,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash 155656020, now seen corresponding path program 1 times [2024-06-27 18:37:56,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:56,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559301442] [2024-06-27 18:37:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:56,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:56,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559301442] [2024-06-27 18:37:56,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559301442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:56,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:56,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:37:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72078628] [2024-06-27 18:37:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:56,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:37:56,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:37:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:37:56,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:37:56,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 275 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 18:37:56,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:56,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:37:56,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:57,804 INFO L124 PetriNetUnfolderBase]: 3488/5233 cut-off events. [2024-06-27 18:37:57,804 INFO L125 PetriNetUnfolderBase]: For 9108/9108 co-relation queries the response was YES. [2024-06-27 18:37:57,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16039 conditions, 5233 events. 3488/5233 cut-off events. For 9108/9108 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29419 event pairs, 798 based on Foata normal form. 8/5227 useless extension candidates. Maximal degree in co-relation 16018. Up to 4567 conditions per place. [2024-06-27 18:37:57,835 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 79 selfloop transitions, 30 changer transitions 5/124 dead transitions. [2024-06-27 18:37:57,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 753 flow [2024-06-27 18:37:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-27 18:37:57,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593167701863354 [2024-06-27 18:37:57,837 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 275 flow. Second operand 7 states and 191 transitions. [2024-06-27 18:37:57,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 753 flow [2024-06-27 18:37:57,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 124 transitions, 729 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:37:57,848 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 452 flow [2024-06-27 18:37:57,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-27 18:37:57,849 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 18:37:57,849 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 452 flow [2024-06-27 18:37:57,849 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 18:37:57,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:57,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:57,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:37:57,850 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:57,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1474868812, now seen corresponding path program 2 times [2024-06-27 18:37:57,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026665720] [2024-06-27 18:37:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:57,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026665720] [2024-06-27 18:37:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026665720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:58,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:58,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:37:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421244559] [2024-06-27 18:37:58,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:58,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:37:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:37:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:37:58,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:37:58,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 452 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 18:37:58,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:58,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:37:58,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:59,300 INFO L124 PetriNetUnfolderBase]: 3126/4726 cut-off events. [2024-06-27 18:37:59,301 INFO L125 PetriNetUnfolderBase]: For 9931/9933 co-relation queries the response was YES. [2024-06-27 18:37:59,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15639 conditions, 4726 events. 3126/4726 cut-off events. For 9931/9933 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26430 event pairs, 730 based on Foata normal form. 12/4722 useless extension candidates. Maximal degree in co-relation 15614. Up to 4038 conditions per place. [2024-06-27 18:37:59,333 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 71 selfloop transitions, 34 changer transitions 0/115 dead transitions. [2024-06-27 18:37:59,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 840 flow [2024-06-27 18:37:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:37:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:37:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 18:37:59,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688405797101449 [2024-06-27 18:37:59,335 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 452 flow. Second operand 6 states and 157 transitions. [2024-06-27 18:37:59,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 840 flow [2024-06-27 18:37:59,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 115 transitions, 801 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:59,350 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 552 flow [2024-06-27 18:37:59,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=552, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-06-27 18:37:59,350 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-06-27 18:37:59,351 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 552 flow [2024-06-27 18:37:59,351 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 18:37:59,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:59,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:59,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:37:59,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:59,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1629291018, now seen corresponding path program 3 times [2024-06-27 18:37:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:59,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89441800] [2024-06-27 18:37:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:59,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:59,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89441800] [2024-06-27 18:37:59,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89441800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:59,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:59,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:37:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897224937] [2024-06-27 18:37:59,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:59,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:37:59,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:37:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:37:59,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:37:59,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 552 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 18:37:59,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:59,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:37:59,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:00,836 INFO L124 PetriNetUnfolderBase]: 3084/4646 cut-off events. [2024-06-27 18:38:00,837 INFO L125 PetriNetUnfolderBase]: For 12062/12064 co-relation queries the response was YES. [2024-06-27 18:38:00,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15758 conditions, 4646 events. 3084/4646 cut-off events. For 12062/12064 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25674 event pairs, 738 based on Foata normal form. 6/4631 useless extension candidates. Maximal degree in co-relation 15732. Up to 3982 conditions per place. [2024-06-27 18:38:00,867 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 67 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2024-06-27 18:38:00,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 858 flow [2024-06-27 18:38:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 18:38:00,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 18:38:00,869 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 552 flow. Second operand 6 states and 153 transitions. [2024-06-27 18:38:00,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 858 flow [2024-06-27 18:38:00,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 805 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:00,888 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 579 flow [2024-06-27 18:38:00,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=579, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2024-06-27 18:38:00,889 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-06-27 18:38:00,890 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 579 flow [2024-06-27 18:38:00,890 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 18:38:00,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:00,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:00,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:38:00,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:00,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:00,891 INFO L85 PathProgramCache]: Analyzing trace with hash 673292626, now seen corresponding path program 1 times [2024-06-27 18:38:00,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:00,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302806684] [2024-06-27 18:38:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:01,946 INFO 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 18:38:01,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:01,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302806684] [2024-06-27 18:38:01,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302806684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:01,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:01,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:01,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543597212] [2024-06-27 18:38:01,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:01,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:01,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:02,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:38:02,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 579 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 18:38:02,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:02,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:38:02,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:02,794 INFO L124 PetriNetUnfolderBase]: 2646/4208 cut-off events. [2024-06-27 18:38:02,795 INFO L125 PetriNetUnfolderBase]: For 11611/11613 co-relation queries the response was YES. [2024-06-27 18:38:02,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14143 conditions, 4208 events. 2646/4208 cut-off events. For 11611/11613 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24573 event pairs, 692 based on Foata normal form. 4/4196 useless extension candidates. Maximal degree in co-relation 14116. Up to 3773 conditions per place. [2024-06-27 18:38:02,825 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 96 selfloop transitions, 13 changer transitions 0/120 dead transitions. [2024-06-27 18:38:02,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 936 flow [2024-06-27 18:38:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:38:02,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 18:38:02,827 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 579 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:38:02,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 936 flow [2024-06-27 18:38:02,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 120 transitions, 816 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:02,841 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 541 flow [2024-06-27 18:38:02,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-27 18:38:02,842 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-06-27 18:38:02,843 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 541 flow [2024-06-27 18:38:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 18:38:02,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:02,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:02,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:38:02,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:02,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash 173762047, now seen corresponding path program 1 times [2024-06-27 18:38:02,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:02,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874532964] [2024-06-27 18:38:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:03,463 INFO 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 18:38:03,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:03,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874532964] [2024-06-27 18:38:03,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874532964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:03,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:03,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:38:03,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111597197] [2024-06-27 18:38:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:03,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:38:03,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:38:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:38:03,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:38:03,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 541 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:03,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:03,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:38:03,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:04,016 INFO L124 PetriNetUnfolderBase]: 2648/4521 cut-off events. [2024-06-27 18:38:04,017 INFO L125 PetriNetUnfolderBase]: For 10454/10456 co-relation queries the response was YES. [2024-06-27 18:38:04,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14525 conditions, 4521 events. 2648/4521 cut-off events. For 10454/10456 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 28878 event pairs, 981 based on Foata normal form. 1/4416 useless extension candidates. Maximal degree in co-relation 14496. Up to 3837 conditions per place. [2024-06-27 18:38:04,041 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 85 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-06-27 18:38:04,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 820 flow [2024-06-27 18:38:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:38:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:38:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 18:38:04,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:38:04,043 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 541 flow. Second operand 5 states and 120 transitions. [2024-06-27 18:38:04,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 820 flow [2024-06-27 18:38:04,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 781 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:04,060 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 596 flow [2024-06-27 18:38:04,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=596, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2024-06-27 18:38:04,061 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-27 18:38:04,061 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 596 flow [2024-06-27 18:38:04,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:04,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:04,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:04,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:38:04,062 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:04,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash -285328841, now seen corresponding path program 1 times [2024-06-27 18:38:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:04,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303857640] [2024-06-27 18:38:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:04,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:04,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303857640] [2024-06-27 18:38:04,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303857640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:04,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:04,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096642634] [2024-06-27 18:38:04,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:04,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:04,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:04,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:04,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:04,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 596 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 18:38:04,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:04,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:04,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:05,650 INFO L124 PetriNetUnfolderBase]: 3368/5469 cut-off events. [2024-06-27 18:38:05,650 INFO L125 PetriNetUnfolderBase]: For 16820/16824 co-relation queries the response was YES. [2024-06-27 18:38:05,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18764 conditions, 5469 events. 3368/5469 cut-off events. For 16820/16824 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33281 event pairs, 623 based on Foata normal form. 16/5351 useless extension candidates. Maximal degree in co-relation 18733. Up to 3533 conditions per place. [2024-06-27 18:38:05,688 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 97 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2024-06-27 18:38:05,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 143 transitions, 1074 flow [2024-06-27 18:38:05,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 18:38:05,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2024-06-27 18:38:05,691 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 596 flow. Second operand 7 states and 186 transitions. [2024-06-27 18:38:05,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 143 transitions, 1074 flow [2024-06-27 18:38:05,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 143 transitions, 1051 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:05,715 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 677 flow [2024-06-27 18:38:05,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=677, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2024-06-27 18:38:05,716 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-27 18:38:05,716 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 677 flow [2024-06-27 18:38:05,717 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 18:38:05,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:05,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:38:05,717 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:05,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash -282471881, now seen corresponding path program 2 times [2024-06-27 18:38:05,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:05,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996008799] [2024-06-27 18:38:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:05,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:06,389 INFO 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 18:38:06,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:06,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996008799] [2024-06-27 18:38:06,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996008799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:06,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:06,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:06,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432400311] [2024-06-27 18:38:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:06,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:06,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:06,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:06,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:06,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 677 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 18:38:06,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:06,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:06,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:07,268 INFO L124 PetriNetUnfolderBase]: 3482/5708 cut-off events. [2024-06-27 18:38:07,268 INFO L125 PetriNetUnfolderBase]: For 21035/21039 co-relation queries the response was YES. [2024-06-27 18:38:07,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20207 conditions, 5708 events. 3482/5708 cut-off events. For 21035/21039 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 35481 event pairs, 906 based on Foata normal form. 24/5578 useless extension candidates. Maximal degree in co-relation 20174. Up to 4280 conditions per place. [2024-06-27 18:38:07,301 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 91 selfloop transitions, 40 changer transitions 0/141 dead transitions. [2024-06-27 18:38:07,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 141 transitions, 1107 flow [2024-06-27 18:38:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:38:07,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683229813664596 [2024-06-27 18:38:07,303 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 677 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:38:07,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 141 transitions, 1107 flow [2024-06-27 18:38:07,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 141 transitions, 1062 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:07,335 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 748 flow [2024-06-27 18:38:07,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=748, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2024-06-27 18:38:07,336 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-06-27 18:38:07,337 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 748 flow [2024-06-27 18:38:07,337 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 18:38:07,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:07,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:07,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:38:07,337 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:07,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash -432570, now seen corresponding path program 1 times [2024-06-27 18:38:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914772405] [2024-06-27 18:38:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:07,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:07,979 INFO 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 18:38:07,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:07,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914772405] [2024-06-27 18:38:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914772405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806537982] [2024-06-27 18:38:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:07,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:08,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:08,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 748 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:08,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:08,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:08,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:08,655 INFO L124 PetriNetUnfolderBase]: 3499/5822 cut-off events. [2024-06-27 18:38:08,656 INFO L125 PetriNetUnfolderBase]: For 22866/22872 co-relation queries the response was YES. [2024-06-27 18:38:08,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21263 conditions, 5822 events. 3499/5822 cut-off events. For 22866/22872 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 37596 event pairs, 1279 based on Foata normal form. 7/5686 useless extension candidates. Maximal degree in co-relation 21228. Up to 5064 conditions per place. [2024-06-27 18:38:08,705 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 104 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2024-06-27 18:38:08,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1147 flow [2024-06-27 18:38:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:38:08,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 18:38:08,707 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 748 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:38:08,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1147 flow [2024-06-27 18:38:08,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 1055 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:08,751 INFO L231 Difference]: Finished difference. Result has 90 places, 104 transitions, 795 flow [2024-06-27 18:38:08,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=795, PETRI_PLACES=90, PETRI_TRANSITIONS=104} [2024-06-27 18:38:08,752 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2024-06-27 18:38:08,752 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 104 transitions, 795 flow [2024-06-27 18:38:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:08,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:08,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:08,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:38:08,753 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:08,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1514395983, now seen corresponding path program 1 times [2024-06-27 18:38:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:08,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643906805] [2024-06-27 18:38:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:08,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:09,713 INFO 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 18:38:09,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643906805] [2024-06-27 18:38:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643906805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:09,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:09,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:09,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199712764] [2024-06-27 18:38:09,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:09,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:09,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:09,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:09,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:09,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 795 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 18:38:09,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:09,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:09,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:10,820 INFO L124 PetriNetUnfolderBase]: 3578/5880 cut-off events. [2024-06-27 18:38:10,821 INFO L125 PetriNetUnfolderBase]: For 24250/24252 co-relation queries the response was YES. [2024-06-27 18:38:10,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22065 conditions, 5880 events. 3578/5880 cut-off events. For 24250/24252 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37208 event pairs, 1003 based on Foata normal form. 4/5729 useless extension candidates. Maximal degree in co-relation 22028. Up to 4667 conditions per place. [2024-06-27 18:38:10,858 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 101 selfloop transitions, 62 changer transitions 0/173 dead transitions. [2024-06-27 18:38:10,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 1477 flow [2024-06-27 18:38:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:38:10,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461956521739131 [2024-06-27 18:38:10,861 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 795 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:38:10,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 1477 flow [2024-06-27 18:38:10,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 173 transitions, 1441 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:10,910 INFO L231 Difference]: Finished difference. Result has 96 places, 123 transitions, 1097 flow [2024-06-27 18:38:10,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1097, PETRI_PLACES=96, PETRI_TRANSITIONS=123} [2024-06-27 18:38:10,911 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-06-27 18:38:10,912 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 123 transitions, 1097 flow [2024-06-27 18:38:10,912 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 18:38:10,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:10,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:10,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:38:10,912 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:10,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1505825103, now seen corresponding path program 2 times [2024-06-27 18:38:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:10,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986251200] [2024-06-27 18:38:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:10,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986251200] [2024-06-27 18:38:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986251200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:11,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982672786] [2024-06-27 18:38:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:11,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:11,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:11,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 123 transitions, 1097 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 18:38:11,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:11,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:11,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:12,948 INFO L124 PetriNetUnfolderBase]: 3663/5983 cut-off events. [2024-06-27 18:38:12,948 INFO L125 PetriNetUnfolderBase]: For 29105/29107 co-relation queries the response was YES. [2024-06-27 18:38:12,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23823 conditions, 5983 events. 3663/5983 cut-off events. For 29105/29107 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 37729 event pairs, 829 based on Foata normal form. 4/5851 useless extension candidates. Maximal degree in co-relation 23784. Up to 4424 conditions per place. [2024-06-27 18:38:12,989 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 104 selfloop transitions, 69 changer transitions 0/183 dead transitions. [2024-06-27 18:38:12,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 183 transitions, 1743 flow [2024-06-27 18:38:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 18:38:12,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 18:38:12,992 INFO L175 Difference]: Start difference. First operand has 96 places, 123 transitions, 1097 flow. Second operand 8 states and 207 transitions. [2024-06-27 18:38:12,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 183 transitions, 1743 flow [2024-06-27 18:38:13,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 183 transitions, 1648 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:13,056 INFO L231 Difference]: Finished difference. Result has 102 places, 128 transitions, 1240 flow [2024-06-27 18:38:13,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1240, PETRI_PLACES=102, PETRI_TRANSITIONS=128} [2024-06-27 18:38:13,058 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-06-27 18:38:13,058 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 128 transitions, 1240 flow [2024-06-27 18:38:13,058 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 18:38:13,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:13,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:13,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:38:13,059 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:13,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1583008243, now seen corresponding path program 3 times [2024-06-27 18:38:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622750563] [2024-06-27 18:38:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:13,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:14,063 INFO 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 18:38:14,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622750563] [2024-06-27 18:38:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622750563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:14,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:14,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:14,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305033784] [2024-06-27 18:38:14,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:14,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:14,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:14,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:14,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 128 transitions, 1240 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 18:38:14,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:14,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:14,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:15,269 INFO L124 PetriNetUnfolderBase]: 3655/6023 cut-off events. [2024-06-27 18:38:15,269 INFO L125 PetriNetUnfolderBase]: For 33648/33650 co-relation queries the response was YES. [2024-06-27 18:38:15,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24334 conditions, 6023 events. 3655/6023 cut-off events. For 33648/33650 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 38383 event pairs, 1050 based on Foata normal form. 4/5869 useless extension candidates. Maximal degree in co-relation 24293. Up to 4790 conditions per place. [2024-06-27 18:38:15,306 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 106 selfloop transitions, 62 changer transitions 0/178 dead transitions. [2024-06-27 18:38:15,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 178 transitions, 1759 flow [2024-06-27 18:38:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:38:15,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461956521739131 [2024-06-27 18:38:15,314 INFO L175 Difference]: Start difference. First operand has 102 places, 128 transitions, 1240 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:38:15,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 178 transitions, 1759 flow [2024-06-27 18:38:15,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 178 transitions, 1600 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:15,384 INFO L231 Difference]: Finished difference. Result has 106 places, 129 transitions, 1235 flow [2024-06-27 18:38:15,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1235, PETRI_PLACES=106, PETRI_TRANSITIONS=129} [2024-06-27 18:38:15,384 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-06-27 18:38:15,385 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 129 transitions, 1235 flow [2024-06-27 18:38:15,385 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 18:38:15,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:15,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:15,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:38:15,385 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:15,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:15,386 INFO L85 PathProgramCache]: Analyzing trace with hash -518355170, now seen corresponding path program 2 times [2024-06-27 18:38:15,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:15,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386109585] [2024-06-27 18:38:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:16,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:16,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386109585] [2024-06-27 18:38:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386109585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:16,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310472639] [2024-06-27 18:38:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:16,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:16,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:16,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 129 transitions, 1235 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:16,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:16,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:16,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:16,803 INFO L124 PetriNetUnfolderBase]: 3657/6129 cut-off events. [2024-06-27 18:38:16,803 INFO L125 PetriNetUnfolderBase]: For 34617/34643 co-relation queries the response was YES. [2024-06-27 18:38:16,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24338 conditions, 6129 events. 3657/6129 cut-off events. For 34617/34643 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 40138 event pairs, 1197 based on Foata normal form. 21/5995 useless extension candidates. Maximal degree in co-relation 24295. Up to 5283 conditions per place. [2024-06-27 18:38:16,841 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 127 selfloop transitions, 20 changer transitions 0/157 dead transitions. [2024-06-27 18:38:16,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 157 transitions, 1649 flow [2024-06-27 18:38:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:38:16,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2024-06-27 18:38:16,842 INFO L175 Difference]: Start difference. First operand has 106 places, 129 transitions, 1235 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:38:16,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 157 transitions, 1649 flow [2024-06-27 18:38:16,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 157 transitions, 1517 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:16,963 INFO L231 Difference]: Finished difference. Result has 108 places, 135 transitions, 1210 flow [2024-06-27 18:38:16,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1210, PETRI_PLACES=108, PETRI_TRANSITIONS=135} [2024-06-27 18:38:16,963 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2024-06-27 18:38:16,963 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 135 transitions, 1210 flow [2024-06-27 18:38:16,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:16,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:16,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:16,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:38:16,964 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:16,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1327556168, now seen corresponding path program 1 times [2024-06-27 18:38:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:16,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338811960] [2024-06-27 18:38:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:17,571 INFO 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 18:38:17,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:17,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338811960] [2024-06-27 18:38:17,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338811960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:17,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:17,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:17,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570681644] [2024-06-27 18:38:17,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:17,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:17,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:17,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:17,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:17,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:38:17,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 135 transitions, 1210 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:17,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:17,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:38:17,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:18,445 INFO L124 PetriNetUnfolderBase]: 3436/5873 cut-off events. [2024-06-27 18:38:18,445 INFO L125 PetriNetUnfolderBase]: For 37747/37749 co-relation queries the response was YES. [2024-06-27 18:38:18,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23751 conditions, 5873 events. 3436/5873 cut-off events. For 37747/37749 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 39179 event pairs, 1094 based on Foata normal form. 3/5720 useless extension candidates. Maximal degree in co-relation 23706. Up to 4935 conditions per place. [2024-06-27 18:38:18,489 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 136 selfloop transitions, 13 changer transitions 0/163 dead transitions. [2024-06-27 18:38:18,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 163 transitions, 1628 flow [2024-06-27 18:38:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:38:18,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-27 18:38:18,491 INFO L175 Difference]: Start difference. First operand has 108 places, 135 transitions, 1210 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:38:18,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 163 transitions, 1628 flow [2024-06-27 18:38:18,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 163 transitions, 1592 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:18,538 INFO L231 Difference]: Finished difference. Result has 113 places, 142 transitions, 1279 flow [2024-06-27 18:38:18,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1279, PETRI_PLACES=113, PETRI_TRANSITIONS=142} [2024-06-27 18:38:18,539 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-06-27 18:38:18,539 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 142 transitions, 1279 flow [2024-06-27 18:38:18,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:18,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:18,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:18,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:38:18,540 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:18,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash -518349218, now seen corresponding path program 2 times [2024-06-27 18:38:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:18,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982725616] [2024-06-27 18:38:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:18,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:19,191 INFO 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 18:38:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982725616] [2024-06-27 18:38:19,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982725616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:19,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:19,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897615510] [2024-06-27 18:38:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:19,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:19,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:38:19,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 142 transitions, 1279 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:19,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:19,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:38:19,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:19,912 INFO L124 PetriNetUnfolderBase]: 3505/6105 cut-off events. [2024-06-27 18:38:19,912 INFO L125 PetriNetUnfolderBase]: For 41390/41396 co-relation queries the response was YES. [2024-06-27 18:38:19,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25142 conditions, 6105 events. 3505/6105 cut-off events. For 41390/41396 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 41276 event pairs, 1109 based on Foata normal form. 8/5923 useless extension candidates. Maximal degree in co-relation 25094. Up to 4983 conditions per place. [2024-06-27 18:38:19,948 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 132 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2024-06-27 18:38:19,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 166 transitions, 1679 flow [2024-06-27 18:38:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:38:19,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:38:19,949 INFO L175 Difference]: Start difference. First operand has 113 places, 142 transitions, 1279 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:38:19,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 166 transitions, 1679 flow [2024-06-27 18:38:20,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 166 transitions, 1646 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:20,011 INFO L231 Difference]: Finished difference. Result has 116 places, 145 transitions, 1323 flow [2024-06-27 18:38:20,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1323, PETRI_PLACES=116, PETRI_TRANSITIONS=145} [2024-06-27 18:38:20,012 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 64 predicate places. [2024-06-27 18:38:20,012 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 145 transitions, 1323 flow [2024-06-27 18:38:20,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:20,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:20,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:20,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:38:20,013 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:20,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1321803560, now seen corresponding path program 1 times [2024-06-27 18:38:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96258632] [2024-06-27 18:38:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:21,086 INFO 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 18:38:21,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:21,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96258632] [2024-06-27 18:38:21,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96258632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:21,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:21,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:21,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404647128] [2024-06-27 18:38:21,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:21,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:21,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:21,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:21,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:21,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:21,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 145 transitions, 1323 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:21,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:21,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:21,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:22,031 INFO L124 PetriNetUnfolderBase]: 3765/6454 cut-off events. [2024-06-27 18:38:22,031 INFO L125 PetriNetUnfolderBase]: For 44226/44228 co-relation queries the response was YES. [2024-06-27 18:38:22,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26940 conditions, 6454 events. 3765/6454 cut-off events. For 44226/44228 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 43220 event pairs, 1226 based on Foata normal form. 1/6257 useless extension candidates. Maximal degree in co-relation 26891. Up to 5458 conditions per place. [2024-06-27 18:38:22,075 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 147 selfloop transitions, 15 changer transitions 0/172 dead transitions. [2024-06-27 18:38:22,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 172 transitions, 1761 flow [2024-06-27 18:38:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:38:22,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 18:38:22,081 INFO L175 Difference]: Start difference. First operand has 116 places, 145 transitions, 1323 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:38:22,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 172 transitions, 1761 flow [2024-06-27 18:38:22,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 172 transitions, 1708 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:22,164 INFO L231 Difference]: Finished difference. Result has 119 places, 148 transitions, 1344 flow [2024-06-27 18:38:22,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1344, PETRI_PLACES=119, PETRI_TRANSITIONS=148} [2024-06-27 18:38:22,164 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 67 predicate places. [2024-06-27 18:38:22,165 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 148 transitions, 1344 flow [2024-06-27 18:38:22,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:22,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:22,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:22,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:38:22,166 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:22,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:22,166 INFO L85 PathProgramCache]: Analyzing trace with hash 90620552, now seen corresponding path program 1 times [2024-06-27 18:38:22,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:22,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180166502] [2024-06-27 18:38:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:22,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:22,862 INFO 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 18:38:22,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:22,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180166502] [2024-06-27 18:38:22,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180166502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:22,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:22,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:22,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761655346] [2024-06-27 18:38:22,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:22,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:22,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:22,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:22,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:22,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:22,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 148 transitions, 1344 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:22,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:22,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:22,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:23,806 INFO L124 PetriNetUnfolderBase]: 3816/6425 cut-off events. [2024-06-27 18:38:23,806 INFO L125 PetriNetUnfolderBase]: For 48004/48018 co-relation queries the response was YES. [2024-06-27 18:38:23,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27503 conditions, 6425 events. 3816/6425 cut-off events. For 48004/48018 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 42634 event pairs, 1177 based on Foata normal form. 17/6280 useless extension candidates. Maximal degree in co-relation 27453. Up to 5328 conditions per place. [2024-06-27 18:38:23,853 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 161 selfloop transitions, 39 changer transitions 0/210 dead transitions. [2024-06-27 18:38:23,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 210 transitions, 2134 flow [2024-06-27 18:38:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:38:23,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 18:38:23,855 INFO L175 Difference]: Start difference. First operand has 119 places, 148 transitions, 1344 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:38:23,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 210 transitions, 2134 flow [2024-06-27 18:38:23,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 210 transitions, 2060 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:23,917 INFO L231 Difference]: Finished difference. Result has 122 places, 174 transitions, 1704 flow [2024-06-27 18:38:23,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1704, PETRI_PLACES=122, PETRI_TRANSITIONS=174} [2024-06-27 18:38:23,918 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-06-27 18:38:23,918 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 174 transitions, 1704 flow [2024-06-27 18:38:23,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:23,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:23,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:23,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:38:23,919 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:23,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1124075409, now seen corresponding path program 1 times [2024-06-27 18:38:23,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:23,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325038233] [2024-06-27 18:38:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:24,816 INFO 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 18:38:24,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:24,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325038233] [2024-06-27 18:38:24,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325038233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:24,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:24,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:24,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436401197] [2024-06-27 18:38:24,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:24,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:24,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:24,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 174 transitions, 1704 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 18:38:24,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:24,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:24,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:25,926 INFO L124 PetriNetUnfolderBase]: 4081/6891 cut-off events. [2024-06-27 18:38:25,926 INFO L125 PetriNetUnfolderBase]: For 59090/59096 co-relation queries the response was YES. [2024-06-27 18:38:25,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31568 conditions, 6891 events. 4081/6891 cut-off events. For 59090/59096 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 46374 event pairs, 1159 based on Foata normal form. 13/6731 useless extension candidates. Maximal degree in co-relation 31516. Up to 4811 conditions per place. [2024-06-27 18:38:25,983 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 149 selfloop transitions, 78 changer transitions 0/237 dead transitions. [2024-06-27 18:38:25,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 237 transitions, 2480 flow [2024-06-27 18:38:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:38:25,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2024-06-27 18:38:25,985 INFO L175 Difference]: Start difference. First operand has 122 places, 174 transitions, 1704 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:38:25,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 237 transitions, 2480 flow [2024-06-27 18:38:26,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 237 transitions, 2400 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:26,082 INFO L231 Difference]: Finished difference. Result has 129 places, 183 transitions, 1959 flow [2024-06-27 18:38:26,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1959, PETRI_PLACES=129, PETRI_TRANSITIONS=183} [2024-06-27 18:38:26,083 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 77 predicate places. [2024-06-27 18:38:26,083 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 183 transitions, 1959 flow [2024-06-27 18:38:26,083 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 18:38:26,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:26,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:26,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:38:26,084 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:26,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash 90920415, now seen corresponding path program 1 times [2024-06-27 18:38:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712708688] [2024-06-27 18:38:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:26,801 INFO 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 18:38:26,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:26,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712708688] [2024-06-27 18:38:26,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712708688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:26,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:26,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:26,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326036572] [2024-06-27 18:38:26,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:26,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:26,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:26,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:26,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:26,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:26,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 183 transitions, 1959 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:26,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:26,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:26,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:27,703 INFO L124 PetriNetUnfolderBase]: 4098/6925 cut-off events. [2024-06-27 18:38:27,703 INFO L125 PetriNetUnfolderBase]: For 64743/64757 co-relation queries the response was YES. [2024-06-27 18:38:27,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33052 conditions, 6925 events. 4098/6925 cut-off events. For 64743/64757 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 46804 event pairs, 1264 based on Foata normal form. 15/6763 useless extension candidates. Maximal degree in co-relation 32997. Up to 5938 conditions per place. [2024-06-27 18:38:27,754 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 188 selfloop transitions, 18 changer transitions 0/216 dead transitions. [2024-06-27 18:38:27,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 216 transitions, 2527 flow [2024-06-27 18:38:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:38:27,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-27 18:38:27,756 INFO L175 Difference]: Start difference. First operand has 129 places, 183 transitions, 1959 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:38:27,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 216 transitions, 2527 flow [2024-06-27 18:38:27,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 216 transitions, 2437 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:27,850 INFO L231 Difference]: Finished difference. Result has 132 places, 186 transitions, 1959 flow [2024-06-27 18:38:27,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1959, PETRI_PLACES=132, PETRI_TRANSITIONS=186} [2024-06-27 18:38:27,851 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 80 predicate places. [2024-06-27 18:38:27,851 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 186 transitions, 1959 flow [2024-06-27 18:38:27,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:27,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:27,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:27,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:38:27,852 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:27,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1618117100, now seen corresponding path program 2 times [2024-06-27 18:38:27,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:27,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900936488] [2024-06-27 18:38:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:28,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:28,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900936488] [2024-06-27 18:38:28,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900936488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:28,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:28,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:28,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525809051] [2024-06-27 18:38:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:28,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:28,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:28,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:28,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 186 transitions, 1959 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:28,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:28,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:28,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:29,511 INFO L124 PetriNetUnfolderBase]: 4233/7157 cut-off events. [2024-06-27 18:38:29,511 INFO L125 PetriNetUnfolderBase]: For 69558/69564 co-relation queries the response was YES. [2024-06-27 18:38:29,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34101 conditions, 7157 events. 4233/7157 cut-off events. For 69558/69564 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 48679 event pairs, 1270 based on Foata normal form. 7/6984 useless extension candidates. Maximal degree in co-relation 34046. Up to 5798 conditions per place. [2024-06-27 18:38:29,562 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 174 selfloop transitions, 42 changer transitions 0/226 dead transitions. [2024-06-27 18:38:29,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 226 transitions, 2647 flow [2024-06-27 18:38:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:38:29,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-27 18:38:29,563 INFO L175 Difference]: Start difference. First operand has 132 places, 186 transitions, 1959 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:38:29,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 226 transitions, 2647 flow [2024-06-27 18:38:29,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 226 transitions, 2579 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:29,672 INFO L231 Difference]: Finished difference. Result has 135 places, 194 transitions, 2098 flow [2024-06-27 18:38:29,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2098, PETRI_PLACES=135, PETRI_TRANSITIONS=194} [2024-06-27 18:38:29,673 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2024-06-27 18:38:29,673 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 194 transitions, 2098 flow [2024-06-27 18:38:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:29,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:29,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:29,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:38:29,674 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:29,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:29,675 INFO L85 PathProgramCache]: Analyzing trace with hash 78657693, now seen corresponding path program 2 times [2024-06-27 18:38:29,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:29,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822422054] [2024-06-27 18:38:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:29,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:30,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822422054] [2024-06-27 18:38:30,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822422054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:30,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:30,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:30,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136657725] [2024-06-27 18:38:30,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:30,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:30,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:30,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:30,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:30,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 194 transitions, 2098 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 18:38:30,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:30,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:30,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:31,569 INFO L124 PetriNetUnfolderBase]: 4213/7251 cut-off events. [2024-06-27 18:38:31,569 INFO L125 PetriNetUnfolderBase]: For 78531/78537 co-relation queries the response was YES. [2024-06-27 18:38:31,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35442 conditions, 7251 events. 4213/7251 cut-off events. For 78531/78537 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 49629 event pairs, 822 based on Foata normal form. 13/7055 useless extension candidates. Maximal degree in co-relation 35385. Up to 4161 conditions per place. [2024-06-27 18:38:31,624 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 151 selfloop transitions, 78 changer transitions 0/239 dead transitions. [2024-06-27 18:38:31,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 239 transitions, 2744 flow [2024-06-27 18:38:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:38:31,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683229813664596 [2024-06-27 18:38:31,625 INFO L175 Difference]: Start difference. First operand has 135 places, 194 transitions, 2098 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:38:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 239 transitions, 2744 flow [2024-06-27 18:38:31,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 239 transitions, 2662 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:31,747 INFO L231 Difference]: Finished difference. Result has 139 places, 194 transitions, 2181 flow [2024-06-27 18:38:31,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2181, PETRI_PLACES=139, PETRI_TRANSITIONS=194} [2024-06-27 18:38:31,747 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-06-27 18:38:31,748 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 194 transitions, 2181 flow [2024-06-27 18:38:31,748 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 18:38:31,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:31,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:31,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:38:31,748 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:31,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash 344354973, now seen corresponding path program 3 times [2024-06-27 18:38:31,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:31,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517169483] [2024-06-27 18:38:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:31,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:32,662 INFO 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 18:38:32,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:32,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517169483] [2024-06-27 18:38:32,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517169483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:32,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:32,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:32,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803710953] [2024-06-27 18:38:32,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:32,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:32,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:32,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:32,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:32,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:32,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 194 transitions, 2181 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 18:38:32,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:32,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:32,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:33,726 INFO L124 PetriNetUnfolderBase]: 4193/7167 cut-off events. [2024-06-27 18:38:33,727 INFO L125 PetriNetUnfolderBase]: For 80587/80593 co-relation queries the response was YES. [2024-06-27 18:38:33,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35783 conditions, 7167 events. 4193/7167 cut-off events. For 80587/80593 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 48554 event pairs, 686 based on Foata normal form. 13/6977 useless extension candidates. Maximal degree in co-relation 35724. Up to 3923 conditions per place. [2024-06-27 18:38:33,785 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 149 selfloop transitions, 75 changer transitions 0/234 dead transitions. [2024-06-27 18:38:33,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 234 transitions, 2771 flow [2024-06-27 18:38:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:38:33,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 18:38:33,786 INFO L175 Difference]: Start difference. First operand has 139 places, 194 transitions, 2181 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:38:33,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 234 transitions, 2771 flow [2024-06-27 18:38:33,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 234 transitions, 2575 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:33,888 INFO L231 Difference]: Finished difference. Result has 139 places, 193 transitions, 2107 flow [2024-06-27 18:38:33,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2107, PETRI_PLACES=139, PETRI_TRANSITIONS=193} [2024-06-27 18:38:33,889 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-06-27 18:38:33,889 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 193 transitions, 2107 flow [2024-06-27 18:38:33,890 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 18:38:33,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:33,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:33,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:38:33,890 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:33,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1628336343, now seen corresponding path program 2 times [2024-06-27 18:38:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:33,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173299809] [2024-06-27 18:38:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:33,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:34,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:34,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173299809] [2024-06-27 18:38:34,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173299809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:34,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:34,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978068872] [2024-06-27 18:38:34,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:34,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:34,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:34,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 193 transitions, 2107 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:34,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:34,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:34,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:35,644 INFO L124 PetriNetUnfolderBase]: 4210/7343 cut-off events. [2024-06-27 18:38:35,644 INFO L125 PetriNetUnfolderBase]: For 77402/77404 co-relation queries the response was YES. [2024-06-27 18:38:35,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35845 conditions, 7343 events. 4210/7343 cut-off events. For 77402/77404 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 51055 event pairs, 1274 based on Foata normal form. 1/7102 useless extension candidates. Maximal degree in co-relation 35785. Up to 6099 conditions per place. [2024-06-27 18:38:35,704 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 195 selfloop transitions, 15 changer transitions 0/220 dead transitions. [2024-06-27 18:38:35,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 220 transitions, 2673 flow [2024-06-27 18:38:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:38:35,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-27 18:38:35,706 INFO L175 Difference]: Start difference. First operand has 139 places, 193 transitions, 2107 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:38:35,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 220 transitions, 2673 flow [2024-06-27 18:38:35,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 220 transitions, 2470 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:35,844 INFO L231 Difference]: Finished difference. Result has 140 places, 196 transitions, 1998 flow [2024-06-27 18:38:35,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1998, PETRI_PLACES=140, PETRI_TRANSITIONS=196} [2024-06-27 18:38:35,844 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 88 predicate places. [2024-06-27 18:38:35,845 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 196 transitions, 1998 flow [2024-06-27 18:38:35,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:35,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:35,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:35,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:38:35,845 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:35,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:35,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1110860697, now seen corresponding path program 3 times [2024-06-27 18:38:35,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:35,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563361387] [2024-06-27 18:38:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:35,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:36,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:36,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563361387] [2024-06-27 18:38:36,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563361387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:36,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:36,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130693210] [2024-06-27 18:38:36,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:36,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:36,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:36,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:36,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:36,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 196 transitions, 1998 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:36,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:36,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:36,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:37,470 INFO L124 PetriNetUnfolderBase]: 4212/7347 cut-off events. [2024-06-27 18:38:37,470 INFO L125 PetriNetUnfolderBase]: For 78544/78580 co-relation queries the response was YES. [2024-06-27 18:38:37,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34892 conditions, 7347 events. 4212/7347 cut-off events. For 78544/78580 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 51114 event pairs, 1251 based on Foata normal form. 29/7132 useless extension candidates. Maximal degree in co-relation 34832. Up to 6030 conditions per place. [2024-06-27 18:38:37,526 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 186 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2024-06-27 18:38:37,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 226 transitions, 2600 flow [2024-06-27 18:38:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 18:38:37,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:38:37,527 INFO L175 Difference]: Start difference. First operand has 140 places, 196 transitions, 1998 flow. Second operand 7 states and 161 transitions. [2024-06-27 18:38:37,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 226 transitions, 2600 flow [2024-06-27 18:38:37,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 226 transitions, 2528 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:37,632 INFO L231 Difference]: Finished difference. Result has 142 places, 199 transitions, 2056 flow [2024-06-27 18:38:37,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2056, PETRI_PLACES=142, PETRI_TRANSITIONS=199} [2024-06-27 18:38:37,633 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-06-27 18:38:37,633 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 199 transitions, 2056 flow [2024-06-27 18:38:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:37,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:37,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:37,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:38:37,634 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:37,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1110860294, now seen corresponding path program 3 times [2024-06-27 18:38:37,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:37,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868690146] [2024-06-27 18:38:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:37,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:38,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:38,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868690146] [2024-06-27 18:38:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868690146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:38,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:38,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642093868] [2024-06-27 18:38:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:38,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:38,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:38,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 199 transitions, 2056 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:38,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:38,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:38,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:39,362 INFO L124 PetriNetUnfolderBase]: 4302/7487 cut-off events. [2024-06-27 18:38:39,363 INFO L125 PetriNetUnfolderBase]: For 85907/85913 co-relation queries the response was YES. [2024-06-27 18:38:39,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36226 conditions, 7487 events. 4302/7487 cut-off events. For 85907/85913 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 52215 event pairs, 1250 based on Foata normal form. 7/7245 useless extension candidates. Maximal degree in co-relation 36165. Up to 5705 conditions per place. [2024-06-27 18:38:39,420 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 179 selfloop transitions, 54 changer transitions 0/243 dead transitions. [2024-06-27 18:38:39,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 243 transitions, 2896 flow [2024-06-27 18:38:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:38:39,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-27 18:38:39,422 INFO L175 Difference]: Start difference. First operand has 142 places, 199 transitions, 2056 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:38:39,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 243 transitions, 2896 flow [2024-06-27 18:38:39,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 243 transitions, 2788 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:39,534 INFO L231 Difference]: Finished difference. Result has 146 places, 212 transitions, 2256 flow [2024-06-27 18:38:39,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2256, PETRI_PLACES=146, PETRI_TRANSITIONS=212} [2024-06-27 18:38:39,535 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-06-27 18:38:39,535 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 212 transitions, 2256 flow [2024-06-27 18:38:39,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:39,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:39,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:39,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:38:39,536 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:39,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash 178901986, now seen corresponding path program 1 times [2024-06-27 18:38:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:39,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181893147] [2024-06-27 18:38:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:39,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:40,250 INFO 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 18:38:40,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181893147] [2024-06-27 18:38:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181893147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:40,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30975871] [2024-06-27 18:38:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:40,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:40,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:40,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:38:40,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 212 transitions, 2256 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:40,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:40,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:38:40,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:41,279 INFO L124 PetriNetUnfolderBase]: 4073/6976 cut-off events. [2024-06-27 18:38:41,280 INFO L125 PetriNetUnfolderBase]: For 98488/98588 co-relation queries the response was YES. [2024-06-27 18:38:41,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36659 conditions, 6976 events. 4073/6976 cut-off events. For 98488/98588 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 48200 event pairs, 1179 based on Foata normal form. 20/6771 useless extension candidates. Maximal degree in co-relation 36595. Up to 5758 conditions per place. [2024-06-27 18:38:41,337 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 208 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-06-27 18:38:41,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 245 transitions, 2881 flow [2024-06-27 18:38:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:38:41,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-27 18:38:41,338 INFO L175 Difference]: Start difference. First operand has 146 places, 212 transitions, 2256 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:38:41,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 245 transitions, 2881 flow [2024-06-27 18:38:41,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 245 transitions, 2779 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:41,481 INFO L231 Difference]: Finished difference. Result has 152 places, 219 transitions, 2302 flow [2024-06-27 18:38:41,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2302, PETRI_PLACES=152, PETRI_TRANSITIONS=219} [2024-06-27 18:38:41,481 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-27 18:38:41,482 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 219 transitions, 2302 flow [2024-06-27 18:38:41,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:41,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:41,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:41,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:38:41,482 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:41,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1973764445, now seen corresponding path program 1 times [2024-06-27 18:38:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:41,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735312255] [2024-06-27 18:38:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:42,496 INFO 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 18:38:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735312255] [2024-06-27 18:38:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735312255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:42,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:42,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580976203] [2024-06-27 18:38:42,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:42,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:42,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:42,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 219 transitions, 2302 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:42,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:42,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:42,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:43,647 INFO L124 PetriNetUnfolderBase]: 4309/7509 cut-off events. [2024-06-27 18:38:43,647 INFO L125 PetriNetUnfolderBase]: For 98250/98252 co-relation queries the response was YES. [2024-06-27 18:38:43,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37836 conditions, 7509 events. 4309/7509 cut-off events. For 98250/98252 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52459 event pairs, 1300 based on Foata normal form. 2/7263 useless extension candidates. Maximal degree in co-relation 37769. Up to 6214 conditions per place. [2024-06-27 18:38:43,696 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 224 selfloop transitions, 17 changer transitions 0/251 dead transitions. [2024-06-27 18:38:43,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 251 transitions, 2958 flow [2024-06-27 18:38:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:38:43,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2024-06-27 18:38:43,698 INFO L175 Difference]: Start difference. First operand has 152 places, 219 transitions, 2302 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:38:43,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 251 transitions, 2958 flow [2024-06-27 18:38:43,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 251 transitions, 2891 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:43,837 INFO L231 Difference]: Finished difference. Result has 156 places, 221 transitions, 2326 flow [2024-06-27 18:38:43,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2326, PETRI_PLACES=156, PETRI_TRANSITIONS=221} [2024-06-27 18:38:43,837 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 104 predicate places. [2024-06-27 18:38:43,837 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 221 transitions, 2326 flow [2024-06-27 18:38:43,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:43,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:43,838 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 18:38:43,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:38:43,838 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:43,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:43,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1485728401, now seen corresponding path program 1 times [2024-06-27 18:38:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:43,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917719498] [2024-06-27 18:38:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:43,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:44,443 INFO 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 18:38:44,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:44,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917719498] [2024-06-27 18:38:44,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917719498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:44,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:44,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:44,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821952077] [2024-06-27 18:38:44,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:44,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:44,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:44,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 221 transitions, 2326 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:44,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:44,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:44,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:45,715 INFO L124 PetriNetUnfolderBase]: 4360/7387 cut-off events. [2024-06-27 18:38:45,715 INFO L125 PetriNetUnfolderBase]: For 104144/104164 co-relation queries the response was YES. [2024-06-27 18:38:45,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38397 conditions, 7387 events. 4360/7387 cut-off events. For 104144/104164 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 50583 event pairs, 1280 based on Foata normal form. 23/7216 useless extension candidates. Maximal degree in co-relation 38329. Up to 6067 conditions per place. [2024-06-27 18:38:45,778 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 214 selfloop transitions, 43 changer transitions 0/267 dead transitions. [2024-06-27 18:38:45,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 267 transitions, 3080 flow [2024-06-27 18:38:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:38:45,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:38:45,779 INFO L175 Difference]: Start difference. First operand has 156 places, 221 transitions, 2326 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:38:45,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 267 transitions, 3080 flow [2024-06-27 18:38:45,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 267 transitions, 3005 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:45,958 INFO L231 Difference]: Finished difference. Result has 158 places, 225 transitions, 2422 flow [2024-06-27 18:38:45,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2422, PETRI_PLACES=158, PETRI_TRANSITIONS=225} [2024-06-27 18:38:45,958 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-06-27 18:38:45,958 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 225 transitions, 2422 flow [2024-06-27 18:38:45,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:45,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:45,959 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 18:38:45,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:38:45,959 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:45,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:45,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1383715753, now seen corresponding path program 1 times [2024-06-27 18:38:45,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:45,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252325867] [2024-06-27 18:38:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:45,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:46,542 INFO 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 18:38:46,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:46,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252325867] [2024-06-27 18:38:46,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252325867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:46,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:46,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:46,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484169030] [2024-06-27 18:38:46,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:46,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:46,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:46,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:46,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:46,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:46,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 225 transitions, 2422 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:46,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:46,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:46,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:47,742 INFO L124 PetriNetUnfolderBase]: 4428/7490 cut-off events. [2024-06-27 18:38:47,742 INFO L125 PetriNetUnfolderBase]: For 112768/112776 co-relation queries the response was YES. [2024-06-27 18:38:47,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40070 conditions, 7490 events. 4428/7490 cut-off events. For 112768/112776 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51424 event pairs, 1294 based on Foata normal form. 10/7302 useless extension candidates. Maximal degree in co-relation 40001. Up to 6179 conditions per place. [2024-06-27 18:38:47,806 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 213 selfloop transitions, 40 changer transitions 0/263 dead transitions. [2024-06-27 18:38:47,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 263 transitions, 3120 flow [2024-06-27 18:38:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:38:47,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 18:38:47,807 INFO L175 Difference]: Start difference. First operand has 158 places, 225 transitions, 2422 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:38:47,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 263 transitions, 3120 flow [2024-06-27 18:38:47,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 263 transitions, 2975 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:47,970 INFO L231 Difference]: Finished difference. Result has 159 places, 230 transitions, 2440 flow [2024-06-27 18:38:47,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2440, PETRI_PLACES=159, PETRI_TRANSITIONS=230} [2024-06-27 18:38:47,971 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 107 predicate places. [2024-06-27 18:38:47,971 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 230 transitions, 2440 flow [2024-06-27 18:38:47,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:47,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:47,972 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 18:38:47,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:38:47,972 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:47,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1377972073, now seen corresponding path program 2 times [2024-06-27 18:38:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:47,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578649619] [2024-06-27 18:38:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:48,678 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 18:38:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578649619] [2024-06-27 18:38:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578649619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:48,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869509437] [2024-06-27 18:38:48,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:48,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:48,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:48,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 230 transitions, 2440 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:48,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:48,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:48,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:49,868 INFO L124 PetriNetUnfolderBase]: 4456/7540 cut-off events. [2024-06-27 18:38:49,868 INFO L125 PetriNetUnfolderBase]: For 115881/115889 co-relation queries the response was YES. [2024-06-27 18:38:49,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40251 conditions, 7540 events. 4456/7540 cut-off events. For 115881/115889 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 51774 event pairs, 1295 based on Foata normal form. 10/7354 useless extension candidates. Maximal degree in co-relation 40181. Up to 6024 conditions per place. [2024-06-27 18:38:49,924 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 206 selfloop transitions, 49 changer transitions 0/265 dead transitions. [2024-06-27 18:38:49,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 265 transitions, 3194 flow [2024-06-27 18:38:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:38:49,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-27 18:38:49,925 INFO L175 Difference]: Start difference. First operand has 159 places, 230 transitions, 2440 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:38:49,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 265 transitions, 3194 flow [2024-06-27 18:38:50,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 265 transitions, 3126 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:50,104 INFO L231 Difference]: Finished difference. Result has 163 places, 233 transitions, 2533 flow [2024-06-27 18:38:50,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2533, PETRI_PLACES=163, PETRI_TRANSITIONS=233} [2024-06-27 18:38:50,104 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-06-27 18:38:50,104 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 233 transitions, 2533 flow [2024-06-27 18:38:50,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:50,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:50,105 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 18:38:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:38:50,105 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:50,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash -415642683, now seen corresponding path program 1 times [2024-06-27 18:38:50,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645161419] [2024-06-27 18:38:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:50,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:50,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645161419] [2024-06-27 18:38:50,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645161419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:50,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:50,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598877818] [2024-06-27 18:38:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:50,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:50,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:51,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:51,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 233 transitions, 2533 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:51,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:51,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:51,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:52,203 INFO L124 PetriNetUnfolderBase]: 4473/7557 cut-off events. [2024-06-27 18:38:52,203 INFO L125 PetriNetUnfolderBase]: For 119548/119562 co-relation queries the response was YES. [2024-06-27 18:38:52,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40645 conditions, 7557 events. 4473/7557 cut-off events. For 119548/119562 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 51802 event pairs, 1306 based on Foata normal form. 15/7373 useless extension candidates. Maximal degree in co-relation 40574. Up to 6428 conditions per place. [2024-06-27 18:38:52,260 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 240 selfloop transitions, 21 changer transitions 0/271 dead transitions. [2024-06-27 18:38:52,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 271 transitions, 3259 flow [2024-06-27 18:38:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:38:52,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-27 18:38:52,261 INFO L175 Difference]: Start difference. First operand has 163 places, 233 transitions, 2533 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:38:52,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 271 transitions, 3259 flow [2024-06-27 18:38:52,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 271 transitions, 3159 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:52,458 INFO L231 Difference]: Finished difference. Result has 167 places, 236 transitions, 2549 flow [2024-06-27 18:38:52,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2433, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2549, PETRI_PLACES=167, PETRI_TRANSITIONS=236} [2024-06-27 18:38:52,459 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2024-06-27 18:38:52,459 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 236 transitions, 2549 flow [2024-06-27 18:38:52,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:52,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:52,459 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 18:38:52,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:38:52,460 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:52,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash -415655207, now seen corresponding path program 2 times [2024-06-27 18:38:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:52,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370173533] [2024-06-27 18:38:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:52,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:53,137 INFO 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 18:38:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370173533] [2024-06-27 18:38:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370173533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:53,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:53,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:53,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826388567] [2024-06-27 18:38:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:53,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:53,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:53,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:53,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:53,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:53,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 236 transitions, 2549 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:53,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:53,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:53,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:54,491 INFO L124 PetriNetUnfolderBase]: 4668/7883 cut-off events. [2024-06-27 18:38:54,491 INFO L125 PetriNetUnfolderBase]: For 133804/133812 co-relation queries the response was YES. [2024-06-27 18:38:54,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43069 conditions, 7883 events. 4668/7883 cut-off events. For 133804/133812 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 54512 event pairs, 1313 based on Foata normal form. 9/7687 useless extension candidates. Maximal degree in co-relation 42997. Up to 6049 conditions per place. [2024-06-27 18:38:54,563 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 215 selfloop transitions, 62 changer transitions 0/287 dead transitions. [2024-06-27 18:38:54,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 287 transitions, 3629 flow [2024-06-27 18:38:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:38:54,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 18:38:54,565 INFO L175 Difference]: Start difference. First operand has 167 places, 236 transitions, 2549 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:38:54,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 287 transitions, 3629 flow [2024-06-27 18:38:54,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 287 transitions, 3535 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:54,803 INFO L231 Difference]: Finished difference. Result has 170 places, 248 transitions, 2858 flow [2024-06-27 18:38:54,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2858, PETRI_PLACES=170, PETRI_TRANSITIONS=248} [2024-06-27 18:38:54,804 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 118 predicate places. [2024-06-27 18:38:54,804 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 248 transitions, 2858 flow [2024-06-27 18:38:54,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:54,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:54,804 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 18:38:54,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:38:54,805 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:54,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1377963579, now seen corresponding path program 3 times [2024-06-27 18:38:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:54,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869055162] [2024-06-27 18:38:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:54,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:55,604 INFO 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 18:38:55,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:55,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869055162] [2024-06-27 18:38:55,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869055162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:55,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:55,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:55,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113727799] [2024-06-27 18:38:55,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:55,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:55,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:55,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:55,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:55,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 248 transitions, 2858 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:55,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:55,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:55,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:56,881 INFO L124 PetriNetUnfolderBase]: 4663/7829 cut-off events. [2024-06-27 18:38:56,881 INFO L125 PetriNetUnfolderBase]: For 144397/144405 co-relation queries the response was YES. [2024-06-27 18:38:56,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44627 conditions, 7829 events. 4663/7829 cut-off events. For 144397/144405 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53675 event pairs, 1290 based on Foata normal form. 9/7644 useless extension candidates. Maximal degree in co-relation 44553. Up to 6047 conditions per place. [2024-06-27 18:38:56,951 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 216 selfloop transitions, 61 changer transitions 0/287 dead transitions. [2024-06-27 18:38:56,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 287 transitions, 3712 flow [2024-06-27 18:38:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:38:56,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:38:56,954 INFO L175 Difference]: Start difference. First operand has 170 places, 248 transitions, 2858 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:38:56,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 287 transitions, 3712 flow [2024-06-27 18:38:57,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 287 transitions, 3531 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:57,274 INFO L231 Difference]: Finished difference. Result has 175 places, 248 transitions, 2807 flow [2024-06-27 18:38:57,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2677, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2807, PETRI_PLACES=175, PETRI_TRANSITIONS=248} [2024-06-27 18:38:57,274 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 123 predicate places. [2024-06-27 18:38:57,274 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 248 transitions, 2807 flow [2024-06-27 18:38:57,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:57,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:57,274 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 18:38:57,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:38:57,275 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:57,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1718845595, now seen corresponding path program 3 times [2024-06-27 18:38:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:57,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110094624] [2024-06-27 18:38:57,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:57,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:57,929 INFO 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 18:38:57,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:57,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110094624] [2024-06-27 18:38:57,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110094624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:57,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:57,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:57,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694640121] [2024-06-27 18:38:57,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:57,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:57,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:57,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:57,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:58,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:38:58,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 248 transitions, 2807 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:58,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:58,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:38:58,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:59,116 INFO L124 PetriNetUnfolderBase]: 4649/7820 cut-off events. [2024-06-27 18:38:59,116 INFO L125 PetriNetUnfolderBase]: For 143037/143039 co-relation queries the response was YES. [2024-06-27 18:38:59,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44270 conditions, 7820 events. 4649/7820 cut-off events. For 143037/143039 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53702 event pairs, 1360 based on Foata normal form. 2/7617 useless extension candidates. Maximal degree in co-relation 44194. Up to 6510 conditions per place. [2024-06-27 18:38:59,182 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 230 selfloop transitions, 40 changer transitions 0/280 dead transitions. [2024-06-27 18:38:59,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 280 transitions, 3475 flow [2024-06-27 18:38:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:38:59,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-27 18:38:59,184 INFO L175 Difference]: Start difference. First operand has 175 places, 248 transitions, 2807 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:38:59,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 280 transitions, 3475 flow [2024-06-27 18:38:59,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 280 transitions, 3312 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:59,382 INFO L231 Difference]: Finished difference. Result has 175 places, 248 transitions, 2731 flow [2024-06-27 18:38:59,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2731, PETRI_PLACES=175, PETRI_TRANSITIONS=248} [2024-06-27 18:38:59,383 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 123 predicate places. [2024-06-27 18:38:59,383 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 248 transitions, 2731 flow [2024-06-27 18:38:59,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:59,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:59,384 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 18:38:59,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:38:59,384 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:59,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:59,384 INFO L85 PathProgramCache]: Analyzing trace with hash -176148329, now seen corresponding path program 4 times [2024-06-27 18:38:59,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:59,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364733059] [2024-06-27 18:38:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:59,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:59,935 INFO 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 18:38:59,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364733059] [2024-06-27 18:38:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364733059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:59,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:59,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445567116] [2024-06-27 18:38:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:59,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:00,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:00,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 248 transitions, 2731 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:00,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:00,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:00,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:01,109 INFO L124 PetriNetUnfolderBase]: 4683/7880 cut-off events. [2024-06-27 18:39:01,110 INFO L125 PetriNetUnfolderBase]: For 145857/145859 co-relation queries the response was YES. [2024-06-27 18:39:01,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44145 conditions, 7880 events. 4683/7880 cut-off events. For 145857/145859 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 54250 event pairs, 1320 based on Foata normal form. 2/7677 useless extension candidates. Maximal degree in co-relation 44069. Up to 6452 conditions per place. [2024-06-27 18:39:01,173 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 224 selfloop transitions, 49 changer transitions 0/283 dead transitions. [2024-06-27 18:39:01,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 283 transitions, 3468 flow [2024-06-27 18:39:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:39:01,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:39:01,175 INFO L175 Difference]: Start difference. First operand has 175 places, 248 transitions, 2731 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:39:01,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 283 transitions, 3468 flow [2024-06-27 18:39:01,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 283 transitions, 3284 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:01,393 INFO L231 Difference]: Finished difference. Result has 175 places, 252 transitions, 2732 flow [2024-06-27 18:39:01,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2732, PETRI_PLACES=175, PETRI_TRANSITIONS=252} [2024-06-27 18:39:01,393 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 123 predicate places. [2024-06-27 18:39:01,393 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 252 transitions, 2732 flow [2024-06-27 18:39:01,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:01,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:01,393 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 18:39:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:39:01,394 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:01,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash 82650045, now seen corresponding path program 5 times [2024-06-27 18:39:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946185884] [2024-06-27 18:39:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:01,989 INFO 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 18:39:01,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946185884] [2024-06-27 18:39:01,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946185884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:01,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:01,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:01,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090161824] [2024-06-27 18:39:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:01,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:01,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:01,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:02,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:02,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 252 transitions, 2732 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:02,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:02,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:02,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:03,114 INFO L124 PetriNetUnfolderBase]: 4717/8143 cut-off events. [2024-06-27 18:39:03,114 INFO L125 PetriNetUnfolderBase]: For 151112/151120 co-relation queries the response was YES. [2024-06-27 18:39:03,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44898 conditions, 8143 events. 4717/8143 cut-off events. For 151112/151120 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 57223 event pairs, 1287 based on Foata normal form. 8/7894 useless extension candidates. Maximal degree in co-relation 44820. Up to 6149 conditions per place. [2024-06-27 18:39:03,340 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 206 selfloop transitions, 69 changer transitions 0/285 dead transitions. [2024-06-27 18:39:03,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 285 transitions, 3544 flow [2024-06-27 18:39:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:39:03,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 18:39:03,341 INFO L175 Difference]: Start difference. First operand has 175 places, 252 transitions, 2732 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:39:03,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 285 transitions, 3544 flow [2024-06-27 18:39:03,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 285 transitions, 3432 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:03,561 INFO L231 Difference]: Finished difference. Result has 178 places, 255 transitions, 2814 flow [2024-06-27 18:39:03,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2814, PETRI_PLACES=178, PETRI_TRANSITIONS=255} [2024-06-27 18:39:03,561 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2024-06-27 18:39:03,561 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 255 transitions, 2814 flow [2024-06-27 18:39:03,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:03,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:03,562 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 18:39:03,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:39:03,562 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:03,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1042846935, now seen corresponding path program 6 times [2024-06-27 18:39:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:03,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415814159] [2024-06-27 18:39:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:03,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:04,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415814159] [2024-06-27 18:39:04,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415814159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:04,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:04,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042061040] [2024-06-27 18:39:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:04,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:04,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:04,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:04,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 255 transitions, 2814 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:04,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:04,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:04,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:05,289 INFO L124 PetriNetUnfolderBase]: 4701/8115 cut-off events. [2024-06-27 18:39:05,290 INFO L125 PetriNetUnfolderBase]: For 154187/154195 co-relation queries the response was YES. [2024-06-27 18:39:05,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44871 conditions, 8115 events. 4701/8115 cut-off events. For 154187/154195 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56969 event pairs, 1273 based on Foata normal form. 10/7868 useless extension candidates. Maximal degree in co-relation 44792. Up to 6136 conditions per place. [2024-06-27 18:39:05,358 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 209 selfloop transitions, 65 changer transitions 0/284 dead transitions. [2024-06-27 18:39:05,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 284 transitions, 3498 flow [2024-06-27 18:39:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:39:05,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 18:39:05,360 INFO L175 Difference]: Start difference. First operand has 178 places, 255 transitions, 2814 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:39:05,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 284 transitions, 3498 flow [2024-06-27 18:39:05,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 284 transitions, 3272 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:05,657 INFO L231 Difference]: Finished difference. Result has 179 places, 255 transitions, 2726 flow [2024-06-27 18:39:05,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2726, PETRI_PLACES=179, PETRI_TRANSITIONS=255} [2024-06-27 18:39:05,658 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 127 predicate places. [2024-06-27 18:39:05,658 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 255 transitions, 2726 flow [2024-06-27 18:39:05,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:05,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:05,658 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 18:39:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:39:05,659 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:05,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1056665433, now seen corresponding path program 2 times [2024-06-27 18:39:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:05,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621291771] [2024-06-27 18:39:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:05,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:06,574 INFO 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 18:39:06,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621291771] [2024-06-27 18:39:06,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621291771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:06,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:06,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:06,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816701336] [2024-06-27 18:39:06,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:06,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:06,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:06,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:06,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 255 transitions, 2726 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:06,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:06,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:06,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:07,814 INFO L124 PetriNetUnfolderBase]: 4718/8178 cut-off events. [2024-06-27 18:39:07,815 INFO L125 PetriNetUnfolderBase]: For 155210/155212 co-relation queries the response was YES. [2024-06-27 18:39:07,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44646 conditions, 8178 events. 4718/8178 cut-off events. For 155210/155212 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 57675 event pairs, 1373 based on Foata normal form. 1/7908 useless extension candidates. Maximal degree in co-relation 44568. Up to 6778 conditions per place. [2024-06-27 18:39:07,895 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 259 selfloop transitions, 18 changer transitions 0/287 dead transitions. [2024-06-27 18:39:07,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 287 transitions, 3474 flow [2024-06-27 18:39:07,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:39:07,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2024-06-27 18:39:07,896 INFO L175 Difference]: Start difference. First operand has 179 places, 255 transitions, 2726 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:39:07,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 287 transitions, 3474 flow [2024-06-27 18:39:08,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 287 transitions, 3334 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:08,157 INFO L231 Difference]: Finished difference. Result has 181 places, 258 transitions, 2704 flow [2024-06-27 18:39:08,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2586, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2704, PETRI_PLACES=181, PETRI_TRANSITIONS=258} [2024-06-27 18:39:08,158 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 129 predicate places. [2024-06-27 18:39:08,158 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 258 transitions, 2704 flow [2024-06-27 18:39:08,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:08,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:08,159 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 18:39:08,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:39:08,159 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:08,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash 90754189, now seen corresponding path program 4 times [2024-06-27 18:39:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:08,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718204941] [2024-06-27 18:39:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:08,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:08,926 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 18:39:08,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:08,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718204941] [2024-06-27 18:39:08,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718204941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:08,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:08,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:08,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841420715] [2024-06-27 18:39:08,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:08,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:08,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:08,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:08,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:09,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:09,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 258 transitions, 2704 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:09,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:09,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:09,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:10,222 INFO L124 PetriNetUnfolderBase]: 4853/8381 cut-off events. [2024-06-27 18:39:10,222 INFO L125 PetriNetUnfolderBase]: For 168813/168821 co-relation queries the response was YES. [2024-06-27 18:39:10,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46405 conditions, 8381 events. 4853/8381 cut-off events. For 168813/168821 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 59176 event pairs, 1343 based on Foata normal form. 9/8123 useless extension candidates. Maximal degree in co-relation 46326. Up to 6739 conditions per place. [2024-06-27 18:39:10,293 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 255 selfloop transitions, 35 changer transitions 0/300 dead transitions. [2024-06-27 18:39:10,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 300 transitions, 3690 flow [2024-06-27 18:39:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:39:10,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 18:39:10,294 INFO L175 Difference]: Start difference. First operand has 181 places, 258 transitions, 2704 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:39:10,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 300 transitions, 3690 flow [2024-06-27 18:39:10,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 300 transitions, 3594 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:10,588 INFO L231 Difference]: Finished difference. Result has 184 places, 266 transitions, 2874 flow [2024-06-27 18:39:10,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2874, PETRI_PLACES=184, PETRI_TRANSITIONS=266} [2024-06-27 18:39:10,589 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-06-27 18:39:10,589 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 266 transitions, 2874 flow [2024-06-27 18:39:10,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:10,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:10,590 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 18:39:10,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:39:10,590 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:10,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:10,590 INFO L85 PathProgramCache]: Analyzing trace with hash 76945053, now seen corresponding path program 3 times [2024-06-27 18:39:10,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:10,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129212690] [2024-06-27 18:39:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:10,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:11,378 INFO 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 18:39:11,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:11,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129212690] [2024-06-27 18:39:11,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129212690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:11,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:11,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473616677] [2024-06-27 18:39:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:11,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:11,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:11,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:11,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 266 transitions, 2874 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:11,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:11,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:11,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:12,713 INFO L124 PetriNetUnfolderBase]: 4885/8382 cut-off events. [2024-06-27 18:39:12,714 INFO L125 PetriNetUnfolderBase]: For 183800/183830 co-relation queries the response was YES. [2024-06-27 18:39:12,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48196 conditions, 8382 events. 4885/8382 cut-off events. For 183800/183830 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 58550 event pairs, 1335 based on Foata normal form. 25/8153 useless extension candidates. Maximal degree in co-relation 48115. Up to 6900 conditions per place. [2024-06-27 18:39:12,792 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 255 selfloop transitions, 49 changer transitions 0/314 dead transitions. [2024-06-27 18:39:12,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 314 transitions, 4024 flow [2024-06-27 18:39:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:39:12,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-27 18:39:12,794 INFO L175 Difference]: Start difference. First operand has 184 places, 266 transitions, 2874 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:39:12,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 314 transitions, 4024 flow [2024-06-27 18:39:13,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 314 transitions, 3799 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:13,067 INFO L231 Difference]: Finished difference. Result has 189 places, 280 transitions, 3189 flow [2024-06-27 18:39:13,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3189, PETRI_PLACES=189, PETRI_TRANSITIONS=280} [2024-06-27 18:39:13,067 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 137 predicate places. [2024-06-27 18:39:13,068 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 280 transitions, 3189 flow [2024-06-27 18:39:13,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:13,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:13,068 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 18:39:13,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:39:13,068 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:13,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:13,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1042855429, now seen corresponding path program 5 times [2024-06-27 18:39:13,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:13,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361135354] [2024-06-27 18:39:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:13,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:13,745 INFO 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 18:39:13,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:13,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361135354] [2024-06-27 18:39:13,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361135354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:13,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:13,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189999960] [2024-06-27 18:39:13,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:13,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:13,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 280 transitions, 3189 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:13,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:13,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:13,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:15,031 INFO L124 PetriNetUnfolderBase]: 4995/8565 cut-off events. [2024-06-27 18:39:15,031 INFO L125 PetriNetUnfolderBase]: For 202627/202635 co-relation queries the response was YES. [2024-06-27 18:39:15,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49825 conditions, 8565 events. 4995/8565 cut-off events. For 202627/202635 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 60233 event pairs, 1327 based on Foata normal form. 9/8311 useless extension candidates. Maximal degree in co-relation 49742. Up to 5901 conditions per place. [2024-06-27 18:39:15,113 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 226 selfloop transitions, 91 changer transitions 0/327 dead transitions. [2024-06-27 18:39:15,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 327 transitions, 4485 flow [2024-06-27 18:39:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:39:15,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-27 18:39:15,114 INFO L175 Difference]: Start difference. First operand has 189 places, 280 transitions, 3189 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:39:15,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 327 transitions, 4485 flow [2024-06-27 18:39:15,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 327 transitions, 4156 flow, removed 156 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:15,702 INFO L231 Difference]: Finished difference. Result has 196 places, 288 transitions, 3264 flow [2024-06-27 18:39:15,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3264, PETRI_PLACES=196, PETRI_TRANSITIONS=288} [2024-06-27 18:39:15,702 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-06-27 18:39:15,703 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 288 transitions, 3264 flow [2024-06-27 18:39:15,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:15,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:15,703 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 18:39:15,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:39:15,704 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:15,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:15,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1057140663, now seen corresponding path program 4 times [2024-06-27 18:39:15,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:15,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082115264] [2024-06-27 18:39:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:16,597 INFO 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 18:39:16,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:16,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082115264] [2024-06-27 18:39:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082115264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:16,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:16,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:16,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794949946] [2024-06-27 18:39:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:16,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:16,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:16,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:16,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:16,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:16,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 288 transitions, 3264 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:16,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:16,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:16,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:18,070 INFO L124 PetriNetUnfolderBase]: 5002/8598 cut-off events. [2024-06-27 18:39:18,070 INFO L125 PetriNetUnfolderBase]: For 215109/215111 co-relation queries the response was YES. [2024-06-27 18:39:18,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51503 conditions, 8598 events. 5002/8598 cut-off events. For 215109/215111 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 60661 event pairs, 1405 based on Foata normal form. 1/8335 useless extension candidates. Maximal degree in co-relation 51417. Up to 7124 conditions per place. [2024-06-27 18:39:18,151 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 288 selfloop transitions, 39 changer transitions 0/337 dead transitions. [2024-06-27 18:39:18,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 337 transitions, 4353 flow [2024-06-27 18:39:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 18:39:18,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-27 18:39:18,153 INFO L175 Difference]: Start difference. First operand has 196 places, 288 transitions, 3264 flow. Second operand 9 states and 201 transitions. [2024-06-27 18:39:18,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 337 transitions, 4353 flow [2024-06-27 18:39:18,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 337 transitions, 4138 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:18,541 INFO L231 Difference]: Finished difference. Result has 205 places, 302 transitions, 3475 flow [2024-06-27 18:39:18,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3475, PETRI_PLACES=205, PETRI_TRANSITIONS=302} [2024-06-27 18:39:18,541 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 153 predicate places. [2024-06-27 18:39:18,542 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 302 transitions, 3475 flow [2024-06-27 18:39:18,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:18,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:18,542 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 18:39:18,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:39:18,542 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:18,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:18,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1042843339, now seen corresponding path program 6 times [2024-06-27 18:39:18,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:18,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411634557] [2024-06-27 18:39:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:18,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:19,205 INFO 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 18:39:19,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:19,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411634557] [2024-06-27 18:39:19,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411634557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:19,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:19,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:19,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510922551] [2024-06-27 18:39:19,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:19,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:19,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:19,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:19,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:19,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 302 transitions, 3475 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:19,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:19,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:19,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:20,609 INFO L124 PetriNetUnfolderBase]: 5033/8626 cut-off events. [2024-06-27 18:39:20,610 INFO L125 PetriNetUnfolderBase]: For 221727/221735 co-relation queries the response was YES. [2024-06-27 18:39:20,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52062 conditions, 8626 events. 5033/8626 cut-off events. For 221727/221735 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 60657 event pairs, 1330 based on Foata normal form. 9/8371 useless extension candidates. Maximal degree in co-relation 51970. Up to 5939 conditions per place. [2024-06-27 18:39:20,696 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 234 selfloop transitions, 99 changer transitions 0/343 dead transitions. [2024-06-27 18:39:20,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 343 transitions, 4590 flow [2024-06-27 18:39:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:39:20,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 18:39:20,697 INFO L175 Difference]: Start difference. First operand has 205 places, 302 transitions, 3475 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:39:20,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 343 transitions, 4590 flow [2024-06-27 18:39:21,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 343 transitions, 4373 flow, removed 104 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:21,143 INFO L231 Difference]: Finished difference. Result has 211 places, 306 transitions, 3566 flow [2024-06-27 18:39:21,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3258, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3566, PETRI_PLACES=211, PETRI_TRANSITIONS=306} [2024-06-27 18:39:21,143 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 159 predicate places. [2024-06-27 18:39:21,143 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 306 transitions, 3566 flow [2024-06-27 18:39:21,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:21,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:21,144 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 18:39:21,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:39:21,144 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:21,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2058213981, now seen corresponding path program 1 times [2024-06-27 18:39:21,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:21,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389221254] [2024-06-27 18:39:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:21,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389221254] [2024-06-27 18:39:21,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389221254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:21,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:21,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:21,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608621111] [2024-06-27 18:39:21,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:21,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:21,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:21,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:21,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:22,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:22,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 306 transitions, 3566 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:22,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:22,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:22,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:23,495 INFO L124 PetriNetUnfolderBase]: 5060/8433 cut-off events. [2024-06-27 18:39:23,495 INFO L125 PetriNetUnfolderBase]: For 225986/225988 co-relation queries the response was YES. [2024-06-27 18:39:23,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53036 conditions, 8433 events. 5060/8433 cut-off events. For 225986/225988 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 58212 event pairs, 1430 based on Foata normal form. 1/8233 useless extension candidates. Maximal degree in co-relation 52942. Up to 7228 conditions per place. [2024-06-27 18:39:23,564 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 314 selfloop transitions, 27 changer transitions 0/351 dead transitions. [2024-06-27 18:39:23,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 351 transitions, 4552 flow [2024-06-27 18:39:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:39:23,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:39:23,565 INFO L175 Difference]: Start difference. First operand has 211 places, 306 transitions, 3566 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:39:23,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 351 transitions, 4552 flow [2024-06-27 18:39:23,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 351 transitions, 4295 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:23,998 INFO L231 Difference]: Finished difference. Result has 216 places, 319 transitions, 3584 flow [2024-06-27 18:39:23,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3584, PETRI_PLACES=216, PETRI_TRANSITIONS=319} [2024-06-27 18:39:23,999 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-06-27 18:39:23,999 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 319 transitions, 3584 flow [2024-06-27 18:39:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:23,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:23,999 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 18:39:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:39:23,999 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:23,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash 90939135, now seen corresponding path program 2 times [2024-06-27 18:39:24,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:24,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410443237] [2024-06-27 18:39:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:24,812 INFO 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 18:39:24,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:24,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410443237] [2024-06-27 18:39:24,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410443237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:24,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:24,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:24,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10224724] [2024-06-27 18:39:24,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:24,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:24,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:24,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 319 transitions, 3584 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:24,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:24,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:24,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:26,253 INFO L124 PetriNetUnfolderBase]: 5128/8851 cut-off events. [2024-06-27 18:39:26,254 INFO L125 PetriNetUnfolderBase]: For 236298/236306 co-relation queries the response was YES. [2024-06-27 18:39:26,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53831 conditions, 8851 events. 5128/8851 cut-off events. For 236298/236306 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 63134 event pairs, 1397 based on Foata normal form. 8/8570 useless extension candidates. Maximal degree in co-relation 53734. Up to 7203 conditions per place. [2024-06-27 18:39:26,340 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 313 selfloop transitions, 37 changer transitions 0/360 dead transitions. [2024-06-27 18:39:26,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 360 transitions, 4554 flow [2024-06-27 18:39:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:39:26,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:39:26,341 INFO L175 Difference]: Start difference. First operand has 216 places, 319 transitions, 3584 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:39:26,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 360 transitions, 4554 flow [2024-06-27 18:39:26,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 360 transitions, 4419 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:26,707 INFO L231 Difference]: Finished difference. Result has 221 places, 326 transitions, 3640 flow [2024-06-27 18:39:26,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3457, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3640, PETRI_PLACES=221, PETRI_TRANSITIONS=326} [2024-06-27 18:39:26,708 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 169 predicate places. [2024-06-27 18:39:26,708 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 326 transitions, 3640 flow [2024-06-27 18:39:26,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:26,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:26,709 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 18:39:26,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:39:26,709 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:26,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1057146615, now seen corresponding path program 3 times [2024-06-27 18:39:26,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:26,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310344064] [2024-06-27 18:39:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:26,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:27,470 INFO 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 18:39:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310344064] [2024-06-27 18:39:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310344064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:27,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:27,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679821447] [2024-06-27 18:39:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:27,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:27,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:27,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:27,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 326 transitions, 3640 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:27,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:27,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:27,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:28,849 INFO L124 PetriNetUnfolderBase]: 5145/8756 cut-off events. [2024-06-27 18:39:28,849 INFO L125 PetriNetUnfolderBase]: For 245026/245034 co-relation queries the response was YES. [2024-06-27 18:39:28,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55020 conditions, 8756 events. 5145/8756 cut-off events. For 245026/245034 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 61223 event pairs, 1346 based on Foata normal form. 7/8518 useless extension candidates. Maximal degree in co-relation 54921. Up to 7224 conditions per place. [2024-06-27 18:39:28,941 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 309 selfloop transitions, 60 changer transitions 0/379 dead transitions. [2024-06-27 18:39:28,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 379 transitions, 4958 flow [2024-06-27 18:39:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:39:28,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:39:28,942 INFO L175 Difference]: Start difference. First operand has 221 places, 326 transitions, 3640 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:39:28,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 379 transitions, 4958 flow [2024-06-27 18:39:29,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 379 transitions, 4780 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:29,358 INFO L231 Difference]: Finished difference. Result has 227 places, 348 transitions, 4039 flow [2024-06-27 18:39:29,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3511, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4039, PETRI_PLACES=227, PETRI_TRANSITIONS=348} [2024-06-27 18:39:29,359 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 175 predicate places. [2024-06-27 18:39:29,359 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 348 transitions, 4039 flow [2024-06-27 18:39:29,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:29,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:29,359 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 18:39:29,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:39:29,359 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:29,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:29,360 INFO L85 PathProgramCache]: Analyzing trace with hash 82664925, now seen corresponding path program 4 times [2024-06-27 18:39:29,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:29,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164949718] [2024-06-27 18:39:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:29,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:30,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:30,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164949718] [2024-06-27 18:39:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164949718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:30,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:30,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:30,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530551849] [2024-06-27 18:39:30,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:30,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:30,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:30,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:30,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 348 transitions, 4039 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:30,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:30,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:30,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:31,737 INFO L124 PetriNetUnfolderBase]: 5164/8901 cut-off events. [2024-06-27 18:39:31,737 INFO L125 PetriNetUnfolderBase]: For 257811/257819 co-relation queries the response was YES. [2024-06-27 18:39:31,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56446 conditions, 8901 events. 5164/8901 cut-off events. For 257811/257819 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 63514 event pairs, 1400 based on Foata normal form. 8/8622 useless extension candidates. Maximal degree in co-relation 56343. Up to 7252 conditions per place. [2024-06-27 18:39:31,826 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 335 selfloop transitions, 43 changer transitions 0/388 dead transitions. [2024-06-27 18:39:31,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 388 transitions, 5121 flow [2024-06-27 18:39:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:39:31,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:39:31,827 INFO L175 Difference]: Start difference. First operand has 227 places, 348 transitions, 4039 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:39:31,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 388 transitions, 5121 flow [2024-06-27 18:39:32,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 388 transitions, 4912 flow, removed 98 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:32,297 INFO L231 Difference]: Finished difference. Result has 233 places, 354 transitions, 4093 flow [2024-06-27 18:39:32,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3878, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4093, PETRI_PLACES=233, PETRI_TRANSITIONS=354} [2024-06-27 18:39:32,297 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 181 predicate places. [2024-06-27 18:39:32,297 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 354 transitions, 4093 flow [2024-06-27 18:39:32,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:32,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:32,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:32,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:39:32,298 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:32,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash -63964569, now seen corresponding path program 1 times [2024-06-27 18:39:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977130699] [2024-06-27 18:39:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:32,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:32,882 INFO 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 18:39:32,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:32,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977130699] [2024-06-27 18:39:32,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977130699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:32,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:32,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:32,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499296827] [2024-06-27 18:39:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:32,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:32,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:32,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 354 transitions, 4093 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:32,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:32,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:32,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:34,546 INFO L124 PetriNetUnfolderBase]: 5292/8819 cut-off events. [2024-06-27 18:39:34,547 INFO L125 PetriNetUnfolderBase]: For 269108/269126 co-relation queries the response was YES. [2024-06-27 18:39:34,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57420 conditions, 8819 events. 5292/8819 cut-off events. For 269108/269126 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 61193 event pairs, 1178 based on Foata normal form. 28/8640 useless extension candidates. Maximal degree in co-relation 57315. Up to 7211 conditions per place. [2024-06-27 18:39:34,651 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 354 selfloop transitions, 42 changer transitions 0/406 dead transitions. [2024-06-27 18:39:34,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 406 transitions, 5181 flow [2024-06-27 18:39:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:39:34,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-27 18:39:34,652 INFO L175 Difference]: Start difference. First operand has 233 places, 354 transitions, 4093 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:39:34,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 406 transitions, 5181 flow [2024-06-27 18:39:35,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 406 transitions, 5027 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:35,497 INFO L231 Difference]: Finished difference. Result has 237 places, 360 transitions, 4150 flow [2024-06-27 18:39:35,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3939, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4150, PETRI_PLACES=237, PETRI_TRANSITIONS=360} [2024-06-27 18:39:35,498 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 185 predicate places. [2024-06-27 18:39:35,498 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 360 transitions, 4150 flow [2024-06-27 18:39:35,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:35,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:35,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:35,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:39:35,499 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:35,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1187049735, now seen corresponding path program 2 times [2024-06-27 18:39:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516830517] [2024-06-27 18:39:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:35,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:36,161 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 18:39:36,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516830517] [2024-06-27 18:39:36,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516830517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:36,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315980853] [2024-06-27 18:39:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:36,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:36,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:36,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:36,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 360 transitions, 4150 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:36,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:36,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:36,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:37,900 INFO L124 PetriNetUnfolderBase]: 5448/9051 cut-off events. [2024-06-27 18:39:37,900 INFO L125 PetriNetUnfolderBase]: For 289278/289296 co-relation queries the response was YES. [2024-06-27 18:39:37,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60211 conditions, 9051 events. 5448/9051 cut-off events. For 289278/289296 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 62862 event pairs, 1449 based on Foata normal form. 30/8874 useless extension candidates. Maximal degree in co-relation 60104. Up to 7445 conditions per place. [2024-06-27 18:39:38,014 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 356 selfloop transitions, 42 changer transitions 0/408 dead transitions. [2024-06-27 18:39:38,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 408 transitions, 5246 flow [2024-06-27 18:39:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:39:38,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-27 18:39:38,016 INFO L175 Difference]: Start difference. First operand has 237 places, 360 transitions, 4150 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:39:38,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 408 transitions, 5246 flow [2024-06-27 18:39:38,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 408 transitions, 5095 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:38,684 INFO L231 Difference]: Finished difference. Result has 240 places, 362 transitions, 4161 flow [2024-06-27 18:39:38,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3999, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4161, PETRI_PLACES=240, PETRI_TRANSITIONS=362} [2024-06-27 18:39:38,685 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-27 18:39:38,685 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 362 transitions, 4161 flow [2024-06-27 18:39:38,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:38,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:38,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:38,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:39:38,685 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:38,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash -288188775, now seen corresponding path program 1 times [2024-06-27 18:39:38,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:38,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115280043] [2024-06-27 18:39:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:38,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:39,443 INFO 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 18:39:39,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:39,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115280043] [2024-06-27 18:39:39,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115280043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:39,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:39,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:39,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934025734] [2024-06-27 18:39:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:39,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:39,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:39,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:39,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:39,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 362 transitions, 4161 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:39:39,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:39,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:39,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:41,227 INFO L124 PetriNetUnfolderBase]: 5502/9207 cut-off events. [2024-06-27 18:39:41,227 INFO L125 PetriNetUnfolderBase]: For 287044/287062 co-relation queries the response was YES. [2024-06-27 18:39:41,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61015 conditions, 9207 events. 5502/9207 cut-off events. For 287044/287062 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 64599 event pairs, 1449 based on Foata normal form. 20/9002 useless extension candidates. Maximal degree in co-relation 60907. Up to 7574 conditions per place. [2024-06-27 18:39:41,339 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 344 selfloop transitions, 76 changer transitions 0/430 dead transitions. [2024-06-27 18:39:41,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 430 transitions, 5603 flow [2024-06-27 18:39:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:39:41,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:39:41,341 INFO L175 Difference]: Start difference. First operand has 240 places, 362 transitions, 4161 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:39:41,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 430 transitions, 5603 flow [2024-06-27 18:39:41,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 430 transitions, 5466 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:42,003 INFO L231 Difference]: Finished difference. Result has 246 places, 382 transitions, 4666 flow [2024-06-27 18:39:42,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4666, PETRI_PLACES=246, PETRI_TRANSITIONS=382} [2024-06-27 18:39:42,004 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 194 predicate places. [2024-06-27 18:39:42,004 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 382 transitions, 4666 flow [2024-06-27 18:39:42,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:39:42,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:42,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:42,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:39:42,004 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:42,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:42,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1409583709, now seen corresponding path program 3 times [2024-06-27 18:39:42,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:42,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013491007] [2024-06-27 18:39:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:42,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013491007] [2024-06-27 18:39:42,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013491007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:42,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:42,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:42,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435486011] [2024-06-27 18:39:42,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:42,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:42,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:42,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:42,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 382 transitions, 4666 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:42,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:42,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:42,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:44,446 INFO L124 PetriNetUnfolderBase]: 5658/9421 cut-off events. [2024-06-27 18:39:44,446 INFO L125 PetriNetUnfolderBase]: For 319936/319944 co-relation queries the response was YES. [2024-06-27 18:39:44,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63890 conditions, 9421 events. 5658/9421 cut-off events. For 319936/319944 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 65992 event pairs, 1466 based on Foata normal form. 18/9222 useless extension candidates. Maximal degree in co-relation 63778. Up to 7541 conditions per place. [2024-06-27 18:39:44,549 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 362 selfloop transitions, 54 changer transitions 0/426 dead transitions. [2024-06-27 18:39:44,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 426 transitions, 5829 flow [2024-06-27 18:39:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:39:44,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 18:39:44,550 INFO L175 Difference]: Start difference. First operand has 246 places, 382 transitions, 4666 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:39:44,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 426 transitions, 5829 flow [2024-06-27 18:39:45,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 426 transitions, 5506 flow, removed 135 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:45,404 INFO L231 Difference]: Finished difference. Result has 251 places, 384 transitions, 4551 flow [2024-06-27 18:39:45,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4357, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4551, PETRI_PLACES=251, PETRI_TRANSITIONS=384} [2024-06-27 18:39:45,404 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 199 predicate places. [2024-06-27 18:39:45,404 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 384 transitions, 4551 flow [2024-06-27 18:39:45,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:45,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:45,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:45,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:39:45,405 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:45,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1296778947, now seen corresponding path program 1 times [2024-06-27 18:39:45,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:45,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105960282] [2024-06-27 18:39:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:45,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:46,024 INFO 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 18:39:46,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:46,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105960282] [2024-06-27 18:39:46,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105960282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:46,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:46,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:46,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037051427] [2024-06-27 18:39:46,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:46,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:46,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:46,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:46,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:46,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:46,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 384 transitions, 4551 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:46,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:46,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:46,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:47,967 INFO L124 PetriNetUnfolderBase]: 5692/9484 cut-off events. [2024-06-27 18:39:47,967 INFO L125 PetriNetUnfolderBase]: For 314083/314091 co-relation queries the response was YES. [2024-06-27 18:39:48,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64266 conditions, 9484 events. 5692/9484 cut-off events. For 314083/314091 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 66487 event pairs, 1528 based on Foata normal form. 4/9260 useless extension candidates. Maximal degree in co-relation 64153. Up to 7763 conditions per place. [2024-06-27 18:39:48,059 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 377 selfloop transitions, 74 changer transitions 0/461 dead transitions. [2024-06-27 18:39:48,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 461 transitions, 6146 flow [2024-06-27 18:39:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:39:48,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 18:39:48,060 INFO L175 Difference]: Start difference. First operand has 251 places, 384 transitions, 4551 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:39:48,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 461 transitions, 6146 flow [2024-06-27 18:39:48,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 461 transitions, 5982 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:48,823 INFO L231 Difference]: Finished difference. Result has 255 places, 421 transitions, 5214 flow [2024-06-27 18:39:48,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5214, PETRI_PLACES=255, PETRI_TRANSITIONS=421} [2024-06-27 18:39:48,823 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 203 predicate places. [2024-06-27 18:39:48,823 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 421 transitions, 5214 flow [2024-06-27 18:39:48,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:48,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:48,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:48,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:39:48,824 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:48,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1296900064, now seen corresponding path program 1 times [2024-06-27 18:39:48,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:48,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641632497] [2024-06-27 18:39:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:49,473 INFO 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 18:39:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641632497] [2024-06-27 18:39:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641632497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:49,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646473171] [2024-06-27 18:39:49,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:49,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:49,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:49,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 421 transitions, 5214 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:49,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:49,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:49,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:51,532 INFO L124 PetriNetUnfolderBase]: 5760/9600 cut-off events. [2024-06-27 18:39:51,532 INFO L125 PetriNetUnfolderBase]: For 331140/331148 co-relation queries the response was YES. [2024-06-27 18:39:51,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66360 conditions, 9600 events. 5760/9600 cut-off events. For 331140/331148 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 67430 event pairs, 1491 based on Foata normal form. 10/9379 useless extension candidates. Maximal degree in co-relation 66244. Up to 7978 conditions per place. [2024-06-27 18:39:51,635 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 410 selfloop transitions, 44 changer transitions 0/464 dead transitions. [2024-06-27 18:39:51,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 464 transitions, 6380 flow [2024-06-27 18:39:51,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:51,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:39:51,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-27 18:39:51,636 INFO L175 Difference]: Start difference. First operand has 255 places, 421 transitions, 5214 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:39:51,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 464 transitions, 6380 flow [2024-06-27 18:39:52,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 464 transitions, 6179 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:52,435 INFO L231 Difference]: Finished difference. Result has 259 places, 425 transitions, 5192 flow [2024-06-27 18:39:52,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5013, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5192, PETRI_PLACES=259, PETRI_TRANSITIONS=425} [2024-06-27 18:39:52,435 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 207 predicate places. [2024-06-27 18:39:52,436 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 425 transitions, 5192 flow [2024-06-27 18:39:52,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:52,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:52,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:52,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:39:52,436 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:52,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1475221054, now seen corresponding path program 2 times [2024-06-27 18:39:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:52,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389274148] [2024-06-27 18:39:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:52,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:53,136 INFO 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 18:39:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389274148] [2024-06-27 18:39:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389274148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:53,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:53,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:53,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402695797] [2024-06-27 18:39:53,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:53,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:53,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:53,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:53,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:53,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:53,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 425 transitions, 5192 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:53,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:53,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:53,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:55,102 INFO L124 PetriNetUnfolderBase]: 5828/9721 cut-off events. [2024-06-27 18:39:55,102 INFO L125 PetriNetUnfolderBase]: For 340279/340287 co-relation queries the response was YES. [2024-06-27 18:39:55,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67058 conditions, 9721 events. 5828/9721 cut-off events. For 340279/340287 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 68443 event pairs, 1451 based on Foata normal form. 10/9492 useless extension candidates. Maximal degree in co-relation 66941. Up to 7598 conditions per place. [2024-06-27 18:39:55,215 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 386 selfloop transitions, 73 changer transitions 0/469 dead transitions. [2024-06-27 18:39:55,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 469 transitions, 6520 flow [2024-06-27 18:39:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:39:55,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 18:39:55,216 INFO L175 Difference]: Start difference. First operand has 259 places, 425 transitions, 5192 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:39:55,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 469 transitions, 6520 flow [2024-06-27 18:39:56,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 469 transitions, 6389 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:56,146 INFO L231 Difference]: Finished difference. Result has 261 places, 429 transitions, 5303 flow [2024-06-27 18:39:56,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5061, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5303, PETRI_PLACES=261, PETRI_TRANSITIONS=429} [2024-06-27 18:39:56,147 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 209 predicate places. [2024-06-27 18:39:56,147 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 429 transitions, 5303 flow [2024-06-27 18:39:56,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:56,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:56,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:56,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:39:56,147 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:56,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1474954144, now seen corresponding path program 3 times [2024-06-27 18:39:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:56,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279340981] [2024-06-27 18:39:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:56,801 INFO 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 18:39:56,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:56,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279340981] [2024-06-27 18:39:56,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279340981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:56,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:56,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:56,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497972221] [2024-06-27 18:39:56,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:56,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:56,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:56,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:56,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:56,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 429 transitions, 5303 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:56,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:56,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:56,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:58,678 INFO L124 PetriNetUnfolderBase]: 5856/9761 cut-off events. [2024-06-27 18:39:58,679 INFO L125 PetriNetUnfolderBase]: For 346135/346143 co-relation queries the response was YES. [2024-06-27 18:39:58,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67591 conditions, 9761 events. 5856/9761 cut-off events. For 346135/346143 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 68651 event pairs, 1501 based on Foata normal form. 10/9538 useless extension candidates. Maximal degree in co-relation 67473. Up to 7611 conditions per place. [2024-06-27 18:39:58,791 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 388 selfloop transitions, 74 changer transitions 0/472 dead transitions. [2024-06-27 18:39:58,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 472 transitions, 6632 flow [2024-06-27 18:39:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:58,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:39:58,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:39:58,792 INFO L175 Difference]: Start difference. First operand has 261 places, 429 transitions, 5303 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:39:58,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 472 transitions, 6632 flow [2024-06-27 18:39:59,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 472 transitions, 6466 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:59,762 INFO L231 Difference]: Finished difference. Result has 264 places, 432 transitions, 5371 flow [2024-06-27 18:39:59,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5139, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5371, PETRI_PLACES=264, PETRI_TRANSITIONS=432} [2024-06-27 18:39:59,762 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 212 predicate places. [2024-06-27 18:39:59,762 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 432 transitions, 5371 flow [2024-06-27 18:39:59,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:59,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:59,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:59,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:39:59,763 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:59,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash 232429035, now seen corresponding path program 2 times [2024-06-27 18:39:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:59,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105980363] [2024-06-27 18:39:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:00,836 INFO 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 18:40:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105980363] [2024-06-27 18:40:00,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105980363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:00,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:00,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:00,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546741011] [2024-06-27 18:40:00,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:00,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:00,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:00,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:00,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:00,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:00,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 432 transitions, 5371 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:40:00,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:00,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:00,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:02,926 INFO L124 PetriNetUnfolderBase]: 5907/9838 cut-off events. [2024-06-27 18:40:02,927 INFO L125 PetriNetUnfolderBase]: For 353606/353614 co-relation queries the response was YES. [2024-06-27 18:40:02,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68240 conditions, 9838 events. 5907/9838 cut-off events. For 353606/353614 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 69243 event pairs, 1502 based on Foata normal form. 9/9611 useless extension candidates. Maximal degree in co-relation 68121. Up to 7647 conditions per place. [2024-06-27 18:40:03,041 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 391 selfloop transitions, 81 changer transitions 0/482 dead transitions. [2024-06-27 18:40:03,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 482 transitions, 6817 flow [2024-06-27 18:40:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:03,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:40:03,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:40:03,042 INFO L175 Difference]: Start difference. First operand has 264 places, 432 transitions, 5371 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:40:03,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 482 transitions, 6817 flow [2024-06-27 18:40:03,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 482 transitions, 6660 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:03,921 INFO L231 Difference]: Finished difference. Result has 268 places, 437 transitions, 5536 flow [2024-06-27 18:40:03,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5214, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5536, PETRI_PLACES=268, PETRI_TRANSITIONS=437} [2024-06-27 18:40:03,922 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 216 predicate places. [2024-06-27 18:40:03,922 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 437 transitions, 5536 flow [2024-06-27 18:40:03,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:40:03,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:03,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:03,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:40:03,923 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:03,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:03,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1409183530, now seen corresponding path program 1 times [2024-06-27 18:40:03,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:03,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433034783] [2024-06-27 18:40:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:03,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:04,951 INFO 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 18:40:04,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:04,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433034783] [2024-06-27 18:40:04,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433034783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:04,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:04,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274111156] [2024-06-27 18:40:04,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:04,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:04,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:05,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:05,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 437 transitions, 5536 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:40:05,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:05,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:05,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:06,909 INFO L124 PetriNetUnfolderBase]: 5935/9853 cut-off events. [2024-06-27 18:40:06,910 INFO L125 PetriNetUnfolderBase]: For 373468/373482 co-relation queries the response was YES. [2024-06-27 18:40:06,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70025 conditions, 9853 events. 5935/9853 cut-off events. For 373468/373482 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 69033 event pairs, 1554 based on Foata normal form. 16/9635 useless extension candidates. Maximal degree in co-relation 69905. Up to 8439 conditions per place. [2024-06-27 18:40:07,038 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 447 selfloop transitions, 23 changer transitions 0/480 dead transitions. [2024-06-27 18:40:07,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 480 transitions, 6766 flow [2024-06-27 18:40:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 18:40:07,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 18:40:07,039 INFO L175 Difference]: Start difference. First operand has 268 places, 437 transitions, 5536 flow. Second operand 9 states and 204 transitions. [2024-06-27 18:40:07,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 480 transitions, 6766 flow [2024-06-27 18:40:08,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 480 transitions, 6482 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:08,392 INFO L231 Difference]: Finished difference. Result has 270 places, 439 transitions, 5405 flow [2024-06-27 18:40:08,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5405, PETRI_PLACES=270, PETRI_TRANSITIONS=439} [2024-06-27 18:40:08,393 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 218 predicate places. [2024-06-27 18:40:08,393 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 439 transitions, 5405 flow [2024-06-27 18:40:08,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:40:08,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:08,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:08,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:40:08,393 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:08,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash 232816845, now seen corresponding path program 3 times [2024-06-27 18:40:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:08,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323106170] [2024-06-27 18:40:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:08,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:09,243 INFO 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 18:40:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323106170] [2024-06-27 18:40:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323106170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:09,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:09,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530914887] [2024-06-27 18:40:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:09,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:09,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:09,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 439 transitions, 5405 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:40:09,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:09,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:09,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:11,372 INFO L124 PetriNetUnfolderBase]: 6080/10025 cut-off events. [2024-06-27 18:40:11,373 INFO L125 PetriNetUnfolderBase]: For 395841/395849 co-relation queries the response was YES. [2024-06-27 18:40:11,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71622 conditions, 10025 events. 6080/10025 cut-off events. For 395841/395849 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 69964 event pairs, 1443 based on Foata normal form. 9/9813 useless extension candidates. Maximal degree in co-relation 71501. Up to 7656 conditions per place. [2024-06-27 18:40:11,496 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 399 selfloop transitions, 95 changer transitions 0/504 dead transitions. [2024-06-27 18:40:11,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 504 transitions, 7223 flow [2024-06-27 18:40:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-27 18:40:11,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282608695652173 [2024-06-27 18:40:11,497 INFO L175 Difference]: Start difference. First operand has 270 places, 439 transitions, 5405 flow. Second operand 10 states and 243 transitions. [2024-06-27 18:40:11,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 504 transitions, 7223 flow [2024-06-27 18:40:12,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 504 transitions, 7086 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:12,711 INFO L231 Difference]: Finished difference. Result has 274 places, 452 transitions, 5816 flow [2024-06-27 18:40:12,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5268, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5816, PETRI_PLACES=274, PETRI_TRANSITIONS=452} [2024-06-27 18:40:12,711 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 222 predicate places. [2024-06-27 18:40:12,712 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 452 transitions, 5816 flow [2024-06-27 18:40:12,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:40:12,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:12,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:12,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:40:12,712 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:12,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1910068987, now seen corresponding path program 4 times [2024-06-27 18:40:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:12,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186359111] [2024-06-27 18:40:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:13,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:13,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186359111] [2024-06-27 18:40:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186359111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:13,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:13,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697871246] [2024-06-27 18:40:13,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:13,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:13,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:13,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:13,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 452 transitions, 5816 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:13,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:13,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:13,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:15,738 INFO L124 PetriNetUnfolderBase]: 6211/10343 cut-off events. [2024-06-27 18:40:15,738 INFO L125 PetriNetUnfolderBase]: For 440497/440505 co-relation queries the response was YES. [2024-06-27 18:40:15,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75719 conditions, 10343 events. 6211/10343 cut-off events. For 440497/440505 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 73417 event pairs, 1412 based on Foata normal form. 18/10096 useless extension candidates. Maximal degree in co-relation 75596. Up to 8083 conditions per place. [2024-06-27 18:40:15,847 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 411 selfloop transitions, 75 changer transitions 0/496 dead transitions. [2024-06-27 18:40:15,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 496 transitions, 7204 flow [2024-06-27 18:40:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:40:15,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 18:40:15,848 INFO L175 Difference]: Start difference. First operand has 274 places, 452 transitions, 5816 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:40:15,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 496 transitions, 7204 flow [2024-06-27 18:40:17,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 496 transitions, 6954 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:17,075 INFO L231 Difference]: Finished difference. Result has 277 places, 454 transitions, 5814 flow [2024-06-27 18:40:17,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5566, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5814, PETRI_PLACES=277, PETRI_TRANSITIONS=454} [2024-06-27 18:40:17,076 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 225 predicate places. [2024-06-27 18:40:17,076 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 454 transitions, 5814 flow [2024-06-27 18:40:17,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:17,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:17,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:17,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:40:17,077 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:17,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash 114701313, now seen corresponding path program 2 times [2024-06-27 18:40:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:17,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872139523] [2024-06-27 18:40:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:17,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:17,886 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 18:40:17,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:17,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872139523] [2024-06-27 18:40:17,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872139523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:17,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:17,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:17,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574064033] [2024-06-27 18:40:17,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:17,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:17,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:17,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:17,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:17,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 454 transitions, 5814 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:17,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:17,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:17,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:19,941 INFO L124 PetriNetUnfolderBase]: 6228/10320 cut-off events. [2024-06-27 18:40:19,941 INFO L125 PetriNetUnfolderBase]: For 424940/424942 co-relation queries the response was YES. [2024-06-27 18:40:20,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76010 conditions, 10320 events. 6228/10320 cut-off events. For 424940/424942 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 72677 event pairs, 1639 based on Foata normal form. 1/10067 useless extension candidates. Maximal degree in co-relation 75885. Up to 8528 conditions per place. [2024-06-27 18:40:20,069 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 409 selfloop transitions, 79 changer transitions 0/498 dead transitions. [2024-06-27 18:40:20,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 498 transitions, 7069 flow [2024-06-27 18:40:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:40:20,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:40:20,071 INFO L175 Difference]: Start difference. First operand has 277 places, 454 transitions, 5814 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:40:20,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 498 transitions, 7069 flow [2024-06-27 18:40:21,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 498 transitions, 6824 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:21,183 INFO L231 Difference]: Finished difference. Result has 280 places, 461 transitions, 5911 flow [2024-06-27 18:40:21,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5569, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5911, PETRI_PLACES=280, PETRI_TRANSITIONS=461} [2024-06-27 18:40:21,184 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 228 predicate places. [2024-06-27 18:40:21,184 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 461 transitions, 5911 flow [2024-06-27 18:40:21,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:21,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:21,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:21,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:40:21,184 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:21,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1743208887, now seen corresponding path program 3 times [2024-06-27 18:40:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313874199] [2024-06-27 18:40:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:21,887 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 18:40:21,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:21,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313874199] [2024-06-27 18:40:21,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313874199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:21,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:21,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:21,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987120274] [2024-06-27 18:40:21,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:21,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:21,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:21,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:21,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 461 transitions, 5911 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:21,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:21,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:21,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:24,124 INFO L124 PetriNetUnfolderBase]: 6250/10362 cut-off events. [2024-06-27 18:40:24,124 INFO L125 PetriNetUnfolderBase]: For 430933/430935 co-relation queries the response was YES. [2024-06-27 18:40:24,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76248 conditions, 10362 events. 6250/10362 cut-off events. For 430933/430935 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 73003 event pairs, 1632 based on Foata normal form. 1/10108 useless extension candidates. Maximal degree in co-relation 76120. Up to 8490 conditions per place. [2024-06-27 18:40:24,239 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 405 selfloop transitions, 90 changer transitions 0/505 dead transitions. [2024-06-27 18:40:24,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 505 transitions, 7399 flow [2024-06-27 18:40:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:40:24,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-27 18:40:24,241 INFO L175 Difference]: Start difference. First operand has 280 places, 461 transitions, 5911 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:40:24,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 505 transitions, 7399 flow [2024-06-27 18:40:25,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 505 transitions, 7208 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:25,497 INFO L231 Difference]: Finished difference. Result has 286 places, 469 transitions, 6160 flow [2024-06-27 18:40:25,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5720, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6160, PETRI_PLACES=286, PETRI_TRANSITIONS=469} [2024-06-27 18:40:25,497 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 234 predicate places. [2024-06-27 18:40:25,497 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 469 transitions, 6160 flow [2024-06-27 18:40:25,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:25,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:25,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:25,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:40:25,498 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:25,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1503850137, now seen corresponding path program 4 times [2024-06-27 18:40:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:25,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573960555] [2024-06-27 18:40:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:25,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:26,181 INFO 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 18:40:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573960555] [2024-06-27 18:40:26,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573960555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:26,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:26,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322692258] [2024-06-27 18:40:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:26,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:26,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 469 transitions, 6160 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:26,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:26,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:28,524 INFO L124 PetriNetUnfolderBase]: 6247/10348 cut-off events. [2024-06-27 18:40:28,524 INFO L125 PetriNetUnfolderBase]: For 443815/443817 co-relation queries the response was YES. [2024-06-27 18:40:28,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76853 conditions, 10348 events. 6247/10348 cut-off events. For 443815/443817 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 72916 event pairs, 1650 based on Foata normal form. 1/10095 useless extension candidates. Maximal degree in co-relation 76722. Up to 8554 conditions per place. [2024-06-27 18:40:28,664 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 418 selfloop transitions, 78 changer transitions 0/506 dead transitions. [2024-06-27 18:40:28,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 506 transitions, 7323 flow [2024-06-27 18:40:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:40:28,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:40:28,665 INFO L175 Difference]: Start difference. First operand has 286 places, 469 transitions, 6160 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:40:28,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 506 transitions, 7323 flow [2024-06-27 18:40:30,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 506 transitions, 7020 flow, removed 106 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:30,160 INFO L231 Difference]: Finished difference. Result has 290 places, 470 transitions, 6053 flow [2024-06-27 18:40:30,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5879, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6053, PETRI_PLACES=290, PETRI_TRANSITIONS=470} [2024-06-27 18:40:30,161 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 238 predicate places. [2024-06-27 18:40:30,161 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 470 transitions, 6053 flow [2024-06-27 18:40:30,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:30,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:30,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:30,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:40:30,162 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:30,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1520814720, now seen corresponding path program 4 times [2024-06-27 18:40:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:30,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555786957] [2024-06-27 18:40:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:30,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:30,750 INFO 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 18:40:30,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:30,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555786957] [2024-06-27 18:40:30,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555786957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:30,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570136713] [2024-06-27 18:40:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:30,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:30,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:30,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:30,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:30,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:30,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 470 transitions, 6053 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:30,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:30,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:30,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:33,076 INFO L124 PetriNetUnfolderBase]: 6237/10332 cut-off events. [2024-06-27 18:40:33,076 INFO L125 PetriNetUnfolderBase]: For 442442/442444 co-relation queries the response was YES. [2024-06-27 18:40:33,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76433 conditions, 10332 events. 6237/10332 cut-off events. For 442442/442444 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 72786 event pairs, 1619 based on Foata normal form. 2/10082 useless extension candidates. Maximal degree in co-relation 76300. Up to 8702 conditions per place. [2024-06-27 18:40:33,184 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 455 selfloop transitions, 43 changer transitions 0/508 dead transitions. [2024-06-27 18:40:33,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 508 transitions, 7245 flow [2024-06-27 18:40:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:40:33,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 18:40:33,185 INFO L175 Difference]: Start difference. First operand has 290 places, 470 transitions, 6053 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:40:33,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 508 transitions, 7245 flow [2024-06-27 18:40:34,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 508 transitions, 7022 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:34,557 INFO L231 Difference]: Finished difference. Result has 292 places, 470 transitions, 5922 flow [2024-06-27 18:40:34,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5830, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5922, PETRI_PLACES=292, PETRI_TRANSITIONS=470} [2024-06-27 18:40:34,558 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 240 predicate places. [2024-06-27 18:40:34,558 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 470 transitions, 5922 flow [2024-06-27 18:40:34,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:34,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:34,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:34,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:40:34,558 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:34,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:34,559 INFO L85 PathProgramCache]: Analyzing trace with hash -207815176, now seen corresponding path program 5 times [2024-06-27 18:40:34,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:34,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517881793] [2024-06-27 18:40:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:34,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:35,292 INFO 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 18:40:35,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:35,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517881793] [2024-06-27 18:40:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517881793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:35,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:35,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329147417] [2024-06-27 18:40:35,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:35,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:35,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:35,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:35,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 470 transitions, 5922 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:35,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:35,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:35,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:37,414 INFO L124 PetriNetUnfolderBase]: 6311/10510 cut-off events. [2024-06-27 18:40:37,414 INFO L125 PetriNetUnfolderBase]: For 454760/454762 co-relation queries the response was YES. [2024-06-27 18:40:37,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77405 conditions, 10510 events. 6311/10510 cut-off events. For 454760/454762 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 74705 event pairs, 1574 based on Foata normal form. 2/10244 useless extension candidates. Maximal degree in co-relation 77271. Up to 8555 conditions per place. [2024-06-27 18:40:37,538 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 441 selfloop transitions, 65 changer transitions 0/516 dead transitions. [2024-06-27 18:40:37,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 516 transitions, 7442 flow [2024-06-27 18:40:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:40:37,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-27 18:40:37,539 INFO L175 Difference]: Start difference. First operand has 292 places, 470 transitions, 5922 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:40:37,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 516 transitions, 7442 flow [2024-06-27 18:40:38,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 516 transitions, 7187 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 18:40:38,806 INFO L231 Difference]: Finished difference. Result has 291 places, 476 transitions, 5961 flow [2024-06-27 18:40:38,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5961, PETRI_PLACES=291, PETRI_TRANSITIONS=476} [2024-06-27 18:40:38,807 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 239 predicate places. [2024-06-27 18:40:38,807 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 476 transitions, 5961 flow [2024-06-27 18:40:38,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:38,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:38,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:38,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:40:38,807 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:38,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1165183650, now seen corresponding path program 6 times [2024-06-27 18:40:38,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:38,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687165106] [2024-06-27 18:40:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:38,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:39,463 INFO 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 18:40:39,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687165106] [2024-06-27 18:40:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687165106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:39,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019777888] [2024-06-27 18:40:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:39,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:39,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:39,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:39,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 476 transitions, 5961 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:39,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:39,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:39,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:41,607 INFO L124 PetriNetUnfolderBase]: 6305/10444 cut-off events. [2024-06-27 18:40:41,607 INFO L125 PetriNetUnfolderBase]: For 455982/455984 co-relation queries the response was YES. [2024-06-27 18:40:41,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77200 conditions, 10444 events. 6305/10444 cut-off events. For 455982/455984 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 73606 event pairs, 1648 based on Foata normal form. 2/10195 useless extension candidates. Maximal degree in co-relation 77064. Up to 8950 conditions per place. [2024-06-27 18:40:41,738 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 476 selfloop transitions, 23 changer transitions 0/509 dead transitions. [2024-06-27 18:40:41,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 509 transitions, 7135 flow [2024-06-27 18:40:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:40:41,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-27 18:40:41,739 INFO L175 Difference]: Start difference. First operand has 291 places, 476 transitions, 5961 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:40:41,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 509 transitions, 7135 flow [2024-06-27 18:40:43,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 509 transitions, 6923 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:43,085 INFO L231 Difference]: Finished difference. Result has 294 places, 476 transitions, 5802 flow [2024-06-27 18:40:43,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5749, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5802, PETRI_PLACES=294, PETRI_TRANSITIONS=476} [2024-06-27 18:40:43,085 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 242 predicate places. [2024-06-27 18:40:43,086 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 476 transitions, 5802 flow [2024-06-27 18:40:43,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:43,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:43,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:43,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:40:43,086 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:43,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2026839970, now seen corresponding path program 7 times [2024-06-27 18:40:43,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:43,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651004100] [2024-06-27 18:40:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:43,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:43,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651004100] [2024-06-27 18:40:43,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651004100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:43,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:43,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704008965] [2024-06-27 18:40:43,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:43,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:43,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 476 transitions, 5802 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:43,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:43,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:43,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:46,005 INFO L124 PetriNetUnfolderBase]: 6379/10809 cut-off events. [2024-06-27 18:40:46,005 INFO L125 PetriNetUnfolderBase]: For 475917/475925 co-relation queries the response was YES. [2024-06-27 18:40:46,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77976 conditions, 10809 events. 6379/10809 cut-off events. For 475917/475925 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 77903 event pairs, 1495 based on Foata normal form. 8/10493 useless extension candidates. Maximal degree in co-relation 77839. Up to 7577 conditions per place. [2024-06-27 18:40:46,135 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 379 selfloop transitions, 136 changer transitions 0/525 dead transitions. [2024-06-27 18:40:46,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 525 transitions, 7548 flow [2024-06-27 18:40:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:40:46,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 18:40:46,138 INFO L175 Difference]: Start difference. First operand has 294 places, 476 transitions, 5802 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:40:46,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 525 transitions, 7548 flow [2024-06-27 18:40:47,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 525 transitions, 7465 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:40:47,433 INFO L231 Difference]: Finished difference. Result has 294 places, 482 transitions, 6145 flow [2024-06-27 18:40:47,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5719, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6145, PETRI_PLACES=294, PETRI_TRANSITIONS=482} [2024-06-27 18:40:47,434 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 242 predicate places. [2024-06-27 18:40:47,434 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 482 transitions, 6145 flow [2024-06-27 18:40:47,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:47,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:47,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:47,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:40:47,435 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:47,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1853904610, now seen corresponding path program 8 times [2024-06-27 18:40:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:47,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210933656] [2024-06-27 18:40:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:48,173 INFO 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 18:40:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210933656] [2024-06-27 18:40:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210933656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:48,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948866420] [2024-06-27 18:40:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:48,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:48,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:48,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 482 transitions, 6145 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:48,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:48,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:48,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:50,359 INFO L124 PetriNetUnfolderBase]: 6413/10982 cut-off events. [2024-06-27 18:40:50,359 INFO L125 PetriNetUnfolderBase]: For 488346/488354 co-relation queries the response was YES. [2024-06-27 18:40:50,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79927 conditions, 10982 events. 6413/10982 cut-off events. For 488346/488354 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 80441 event pairs, 1595 based on Foata normal form. 8/10633 useless extension candidates. Maximal degree in co-relation 79789. Up to 9004 conditions per place. [2024-06-27 18:40:50,516 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 470 selfloop transitions, 40 changer transitions 0/520 dead transitions. [2024-06-27 18:40:50,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 520 transitions, 7459 flow [2024-06-27 18:40:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:40:50,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:40:50,517 INFO L175 Difference]: Start difference. First operand has 294 places, 482 transitions, 6145 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:40:50,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 520 transitions, 7459 flow [2024-06-27 18:40:52,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 520 transitions, 7163 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:52,117 INFO L231 Difference]: Finished difference. Result has 297 places, 485 transitions, 6021 flow [2024-06-27 18:40:52,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5858, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6021, PETRI_PLACES=297, PETRI_TRANSITIONS=485} [2024-06-27 18:40:52,118 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 245 predicate places. [2024-06-27 18:40:52,118 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 485 transitions, 6021 flow [2024-06-27 18:40:52,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:52,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:52,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:52,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:40:52,118 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:52,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1475868138, now seen corresponding path program 9 times [2024-06-27 18:40:52,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:52,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411934298] [2024-06-27 18:40:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:52,843 INFO 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 18:40:52,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:52,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411934298] [2024-06-27 18:40:52,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411934298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:52,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:52,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503339544] [2024-06-27 18:40:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:52,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:52,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:52,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:52,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 485 transitions, 6021 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:52,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:52,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:52,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:55,239 INFO L124 PetriNetUnfolderBase]: 6407/10936 cut-off events. [2024-06-27 18:40:55,239 INFO L125 PetriNetUnfolderBase]: For 486028/486036 co-relation queries the response was YES. [2024-06-27 18:40:55,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78349 conditions, 10936 events. 6407/10936 cut-off events. For 486028/486036 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 79665 event pairs, 1587 based on Foata normal form. 8/10598 useless extension candidates. Maximal degree in co-relation 78211. Up to 8801 conditions per place. [2024-06-27 18:40:55,381 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 467 selfloop transitions, 56 changer transitions 0/533 dead transitions. [2024-06-27 18:40:55,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 533 transitions, 7522 flow [2024-06-27 18:40:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 233 transitions. [2024-06-27 18:40:55,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065217391304347 [2024-06-27 18:40:55,382 INFO L175 Difference]: Start difference. First operand has 297 places, 485 transitions, 6021 flow. Second operand 10 states and 233 transitions. [2024-06-27 18:40:55,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 533 transitions, 7522 flow [2024-06-27 18:40:56,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 533 transitions, 7355 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:56,874 INFO L231 Difference]: Finished difference. Result has 301 places, 485 transitions, 5973 flow [2024-06-27 18:40:56,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5854, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5973, PETRI_PLACES=301, PETRI_TRANSITIONS=485} [2024-06-27 18:40:56,874 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 249 predicate places. [2024-06-27 18:40:56,875 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 485 transitions, 5973 flow [2024-06-27 18:40:56,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:56,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:56,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:56,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:40:56,875 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:56,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1080161718, now seen corresponding path program 10 times [2024-06-27 18:40:56,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:56,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468816151] [2024-06-27 18:40:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:56,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:57,542 INFO 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 18:40:57,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:57,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468816151] [2024-06-27 18:40:57,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468816151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:57,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:57,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865958975] [2024-06-27 18:40:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:57,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:57,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:40:57,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 485 transitions, 5973 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:57,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:57,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:40:57,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:59,709 INFO L124 PetriNetUnfolderBase]: 6475/10947 cut-off events. [2024-06-27 18:40:59,709 INFO L125 PetriNetUnfolderBase]: For 500532/500540 co-relation queries the response was YES. [2024-06-27 18:40:59,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79013 conditions, 10947 events. 6475/10947 cut-off events. For 500532/500540 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 78838 event pairs, 1483 based on Foata normal form. 10/10632 useless extension candidates. Maximal degree in co-relation 78874. Up to 7640 conditions per place. [2024-06-27 18:40:59,875 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 388 selfloop transitions, 133 changer transitions 0/531 dead transitions. [2024-06-27 18:40:59,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 531 transitions, 7538 flow [2024-06-27 18:40:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:40:59,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:40:59,876 INFO L175 Difference]: Start difference. First operand has 301 places, 485 transitions, 5973 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:40:59,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 531 transitions, 7538 flow [2024-06-27 18:41:01,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 531 transitions, 7393 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:01,760 INFO L231 Difference]: Finished difference. Result has 300 places, 489 transitions, 6186 flow [2024-06-27 18:41:01,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5828, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6186, PETRI_PLACES=300, PETRI_TRANSITIONS=489} [2024-06-27 18:41:01,761 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 248 predicate places. [2024-06-27 18:41:01,761 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 489 transitions, 6186 flow [2024-06-27 18:41:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:01,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:01,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:01,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:41:01,761 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:01,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1909678728, now seen corresponding path program 11 times [2024-06-27 18:41:01,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:01,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526272598] [2024-06-27 18:41:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:02,497 INFO 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 18:41:02,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:02,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526272598] [2024-06-27 18:41:02,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526272598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:02,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:02,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:02,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447172754] [2024-06-27 18:41:02,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:02,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:02,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:02,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:02,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 489 transitions, 6186 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:02,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:02,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:02,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:05,026 INFO L124 PetriNetUnfolderBase]: 6459/10943 cut-off events. [2024-06-27 18:41:05,027 INFO L125 PetriNetUnfolderBase]: For 500218/500226 co-relation queries the response was YES. [2024-06-27 18:41:05,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79546 conditions, 10943 events. 6459/10943 cut-off events. For 500218/500226 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 79041 event pairs, 1465 based on Foata normal form. 10/10628 useless extension candidates. Maximal degree in co-relation 79406. Up to 7627 conditions per place. [2024-06-27 18:41:05,170 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 391 selfloop transitions, 130 changer transitions 0/531 dead transitions. [2024-06-27 18:41:05,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 531 transitions, 7668 flow [2024-06-27 18:41:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:41:05,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:41:05,171 INFO L175 Difference]: Start difference. First operand has 300 places, 489 transitions, 6186 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:41:05,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 531 transitions, 7668 flow [2024-06-27 18:41:06,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 531 transitions, 7214 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:06,908 INFO L231 Difference]: Finished difference. Result has 301 places, 489 transitions, 6001 flow [2024-06-27 18:41:06,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5732, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6001, PETRI_PLACES=301, PETRI_TRANSITIONS=489} [2024-06-27 18:41:06,909 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 249 predicate places. [2024-06-27 18:41:06,909 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 489 transitions, 6001 flow [2024-06-27 18:41:06,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:06,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:06,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:06,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:41:06,909 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:06,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1603118020, now seen corresponding path program 12 times [2024-06-27 18:41:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:06,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553361433] [2024-06-27 18:41:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:07,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553361433] [2024-06-27 18:41:07,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553361433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:07,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:07,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:07,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753144700] [2024-06-27 18:41:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:07,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:07,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:07,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:07,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 489 transitions, 6001 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:07,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:07,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:07,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:09,835 INFO L124 PetriNetUnfolderBase]: 6443/11009 cut-off events. [2024-06-27 18:41:09,835 INFO L125 PetriNetUnfolderBase]: For 490183/490191 co-relation queries the response was YES. [2024-06-27 18:41:09,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78381 conditions, 11009 events. 6443/11009 cut-off events. For 490183/490191 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 80344 event pairs, 1596 based on Foata normal form. 10/10662 useless extension candidates. Maximal degree in co-relation 78240. Up to 8858 conditions per place. [2024-06-27 18:41:09,991 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 460 selfloop transitions, 54 changer transitions 0/524 dead transitions. [2024-06-27 18:41:09,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 524 transitions, 7255 flow [2024-06-27 18:41:09,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:41:09,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 18:41:09,992 INFO L175 Difference]: Start difference. First operand has 301 places, 489 transitions, 6001 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:41:09,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 524 transitions, 7255 flow [2024-06-27 18:41:11,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 524 transitions, 6898 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:11,589 INFO L231 Difference]: Finished difference. Result has 301 places, 489 transitions, 5760 flow [2024-06-27 18:41:11,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5760, PETRI_PLACES=301, PETRI_TRANSITIONS=489} [2024-06-27 18:41:11,590 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 249 predicate places. [2024-06-27 18:41:11,590 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 489 transitions, 5760 flow [2024-06-27 18:41:11,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:11,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:11,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:11,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:41:11,591 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:11,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1909682293, now seen corresponding path program 4 times [2024-06-27 18:41:11,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:11,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059931065] [2024-06-27 18:41:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:11,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:12,541 INFO 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 18:41:12,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:12,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059931065] [2024-06-27 18:41:12,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059931065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:12,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:12,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538142450] [2024-06-27 18:41:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:12,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:12,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:12,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:12,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:12,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 489 transitions, 5760 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:12,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:12,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:12,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:14,823 INFO L124 PetriNetUnfolderBase]: 6494/10978 cut-off events. [2024-06-27 18:41:14,824 INFO L125 PetriNetUnfolderBase]: For 497130/497138 co-relation queries the response was YES. [2024-06-27 18:41:14,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77903 conditions, 10978 events. 6494/10978 cut-off events. For 497130/497138 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 79090 event pairs, 1461 based on Foata normal form. 9/10662 useless extension candidates. Maximal degree in co-relation 77761. Up to 7650 conditions per place. [2024-06-27 18:41:14,967 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 393 selfloop transitions, 137 changer transitions 0/540 dead transitions. [2024-06-27 18:41:14,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 540 transitions, 7318 flow [2024-06-27 18:41:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 18:41:14,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265700483091788 [2024-06-27 18:41:14,968 INFO L175 Difference]: Start difference. First operand has 301 places, 489 transitions, 5760 flow. Second operand 9 states and 218 transitions. [2024-06-27 18:41:14,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 540 transitions, 7318 flow [2024-06-27 18:41:16,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 540 transitions, 7210 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:16,530 INFO L231 Difference]: Finished difference. Result has 303 places, 494 transitions, 6116 flow [2024-06-27 18:41:16,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5652, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6116, PETRI_PLACES=303, PETRI_TRANSITIONS=494} [2024-06-27 18:41:16,530 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 251 predicate places. [2024-06-27 18:41:16,530 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 494 transitions, 6116 flow [2024-06-27 18:41:16,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:16,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:16,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:16,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:41:16,531 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:16,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2031204770, now seen corresponding path program 2 times [2024-06-27 18:41:16,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:16,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103820472] [2024-06-27 18:41:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:16,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:17,583 INFO 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 18:41:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103820472] [2024-06-27 18:41:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103820472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:17,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:17,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:17,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181444339] [2024-06-27 18:41:17,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:17,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:17,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:17,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 494 transitions, 6116 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:17,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:17,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:17,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:20,159 INFO L124 PetriNetUnfolderBase]: 6527/11199 cut-off events. [2024-06-27 18:41:20,159 INFO L125 PetriNetUnfolderBase]: For 527027/527061 co-relation queries the response was YES. [2024-06-27 18:41:20,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81287 conditions, 11199 events. 6527/11199 cut-off events. For 527027/527061 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 82354 event pairs, 1590 based on Foata normal form. 30/10852 useless extension candidates. Maximal degree in co-relation 81144. Up to 9205 conditions per place. [2024-06-27 18:41:20,279 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 492 selfloop transitions, 35 changer transitions 0/537 dead transitions. [2024-06-27 18:41:20,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 537 transitions, 7497 flow [2024-06-27 18:41:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:41:20,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-06-27 18:41:20,280 INFO L175 Difference]: Start difference. First operand has 303 places, 494 transitions, 6116 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:41:20,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 537 transitions, 7497 flow [2024-06-27 18:41:21,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 537 transitions, 7071 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:21,792 INFO L231 Difference]: Finished difference. Result has 306 places, 499 transitions, 5908 flow [2024-06-27 18:41:21,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5690, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5908, PETRI_PLACES=306, PETRI_TRANSITIONS=499} [2024-06-27 18:41:21,792 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 254 predicate places. [2024-06-27 18:41:21,792 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 499 transitions, 5908 flow [2024-06-27 18:41:21,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:21,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:21,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:21,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:41:21,793 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:21,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:21,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1909669273, now seen corresponding path program 5 times [2024-06-27 18:41:21,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:21,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684118606] [2024-06-27 18:41:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:21,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:22,717 INFO 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 18:41:22,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:22,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684118606] [2024-06-27 18:41:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684118606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:22,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:22,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94777746] [2024-06-27 18:41:22,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:22,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:22,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:22,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 499 transitions, 5908 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:22,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:22,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:22,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:25,328 INFO L124 PetriNetUnfolderBase]: 6682/11256 cut-off events. [2024-06-27 18:41:25,329 INFO L125 PetriNetUnfolderBase]: For 567921/567929 co-relation queries the response was YES. [2024-06-27 18:41:25,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83089 conditions, 11256 events. 6682/11256 cut-off events. For 567921/567929 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 81125 event pairs, 1463 based on Foata normal form. 9/10939 useless extension candidates. Maximal degree in co-relation 82944. Up to 7716 conditions per place. [2024-06-27 18:41:25,477 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 403 selfloop transitions, 149 changer transitions 0/562 dead transitions. [2024-06-27 18:41:25,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 562 transitions, 7944 flow [2024-06-27 18:41:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-27 18:41:25,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282608695652173 [2024-06-27 18:41:25,478 INFO L175 Difference]: Start difference. First operand has 306 places, 499 transitions, 5908 flow. Second operand 10 states and 243 transitions. [2024-06-27 18:41:25,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 562 transitions, 7944 flow [2024-06-27 18:41:27,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 562 transitions, 7771 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:27,400 INFO L231 Difference]: Finished difference. Result has 311 places, 509 transitions, 6423 flow [2024-06-27 18:41:27,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5735, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6423, PETRI_PLACES=311, PETRI_TRANSITIONS=509} [2024-06-27 18:41:27,401 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 259 predicate places. [2024-06-27 18:41:27,401 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 509 transitions, 6423 flow [2024-06-27 18:41:27,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:27,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:27,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:27,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:41:27,401 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:27,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1910057083, now seen corresponding path program 6 times [2024-06-27 18:41:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241556410] [2024-06-27 18:41:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:28,365 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 18:41:28,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241556410] [2024-06-27 18:41:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241556410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:28,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:28,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:28,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865450682] [2024-06-27 18:41:28,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:28,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:28,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:28,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:28,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:28,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:28,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 509 transitions, 6423 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:28,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:28,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:28,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:30,959 INFO L124 PetriNetUnfolderBase]: 6713/11330 cut-off events. [2024-06-27 18:41:30,959 INFO L125 PetriNetUnfolderBase]: For 593687/593695 co-relation queries the response was YES. [2024-06-27 18:41:31,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86493 conditions, 11330 events. 6713/11330 cut-off events. For 593687/593695 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 81884 event pairs, 1480 based on Foata normal form. 9/11004 useless extension candidates. Maximal degree in co-relation 86346. Up to 7949 conditions per place. [2024-06-27 18:41:31,101 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 405 selfloop transitions, 145 changer transitions 0/560 dead transitions. [2024-06-27 18:41:31,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 560 transitions, 8071 flow [2024-06-27 18:41:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 18:41:31,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265700483091788 [2024-06-27 18:41:31,102 INFO L175 Difference]: Start difference. First operand has 311 places, 509 transitions, 6423 flow. Second operand 9 states and 218 transitions. [2024-06-27 18:41:31,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 560 transitions, 8071 flow [2024-06-27 18:41:32,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 560 transitions, 7666 flow, removed 119 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:32,943 INFO L231 Difference]: Finished difference. Result has 314 places, 514 transitions, 6524 flow [2024-06-27 18:41:32,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6050, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6524, PETRI_PLACES=314, PETRI_TRANSITIONS=514} [2024-06-27 18:41:32,943 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 262 predicate places. [2024-06-27 18:41:32,943 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 514 transitions, 6524 flow [2024-06-27 18:41:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:32,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:32,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:32,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:41:32,944 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:32,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1588375970, now seen corresponding path program 3 times [2024-06-27 18:41:32,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:32,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395766138] [2024-06-27 18:41:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:32,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:33,967 INFO 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 18:41:33,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395766138] [2024-06-27 18:41:33,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395766138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:33,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:33,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:33,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029645584] [2024-06-27 18:41:33,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:33,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:33,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:34,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:34,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 514 transitions, 6524 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:34,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:34,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:34,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:36,543 INFO L124 PetriNetUnfolderBase]: 6746/11528 cut-off events. [2024-06-27 18:41:36,544 INFO L125 PetriNetUnfolderBase]: For 603734/603736 co-relation queries the response was YES. [2024-06-27 18:41:36,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87628 conditions, 11528 events. 6746/11528 cut-off events. For 603734/603736 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 84804 event pairs, 1660 based on Foata normal form. 2/11151 useless extension candidates. Maximal degree in co-relation 87479. Up to 9548 conditions per place. [2024-06-27 18:41:36,735 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 523 selfloop transitions, 26 changer transitions 0/559 dead transitions. [2024-06-27 18:41:36,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 559 transitions, 7971 flow [2024-06-27 18:41:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-27 18:41:36,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:41:36,736 INFO L175 Difference]: Start difference. First operand has 314 places, 514 transitions, 6524 flow. Second operand 10 states and 220 transitions. [2024-06-27 18:41:36,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 559 transitions, 7971 flow [2024-06-27 18:41:38,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 559 transitions, 7547 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:38,796 INFO L231 Difference]: Finished difference. Result has 318 places, 519 transitions, 6315 flow [2024-06-27 18:41:38,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6100, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6315, PETRI_PLACES=318, PETRI_TRANSITIONS=519} [2024-06-27 18:41:38,797 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 266 predicate places. [2024-06-27 18:41:38,797 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 519 transitions, 6315 flow [2024-06-27 18:41:38,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:38,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:38,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:38,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:41:38,797 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:38,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1463174473, now seen corresponding path program 7 times [2024-06-27 18:41:38,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:38,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185073580] [2024-06-27 18:41:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:38,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:39,728 INFO 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 18:41:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:39,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185073580] [2024-06-27 18:41:39,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185073580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:39,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:39,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589706102] [2024-06-27 18:41:39,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:39,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:39,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:39,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:39,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 519 transitions, 6315 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:39,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:39,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:39,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:42,374 INFO L124 PetriNetUnfolderBase]: 6797/11543 cut-off events. [2024-06-27 18:41:42,374 INFO L125 PetriNetUnfolderBase]: For 619088/619096 co-relation queries the response was YES. [2024-06-27 18:41:42,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87177 conditions, 11543 events. 6797/11543 cut-off events. For 619088/619096 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 84268 event pairs, 1613 based on Foata normal form. 9/11186 useless extension candidates. Maximal degree in co-relation 87026. Up to 9309 conditions per place. [2024-06-27 18:41:42,525 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 492 selfloop transitions, 62 changer transitions 0/564 dead transitions. [2024-06-27 18:41:42,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 564 transitions, 7891 flow [2024-06-27 18:41:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:41:42,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2024-06-27 18:41:42,527 INFO L175 Difference]: Start difference. First operand has 318 places, 519 transitions, 6315 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:41:42,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 564 transitions, 7891 flow [2024-06-27 18:41:44,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 564 transitions, 7719 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:44,382 INFO L231 Difference]: Finished difference. Result has 320 places, 524 transitions, 6485 flow [2024-06-27 18:41:44,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6143, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6485, PETRI_PLACES=320, PETRI_TRANSITIONS=524} [2024-06-27 18:41:44,383 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 268 predicate places. [2024-06-27 18:41:44,383 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 524 transitions, 6485 flow [2024-06-27 18:41:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:44,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:44,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:44,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:41:44,383 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:44,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:44,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1481572603, now seen corresponding path program 8 times [2024-06-27 18:41:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365494697] [2024-06-27 18:41:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:45,366 INFO 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 18:41:45,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:45,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365494697] [2024-06-27 18:41:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365494697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:45,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874373972] [2024-06-27 18:41:45,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:45,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:45,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:45,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 524 transitions, 6485 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:45,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:45,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:45,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:47,967 INFO L124 PetriNetUnfolderBase]: 6932/11725 cut-off events. [2024-06-27 18:41:47,967 INFO L125 PetriNetUnfolderBase]: For 659508/659516 co-relation queries the response was YES. [2024-06-27 18:41:48,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91369 conditions, 11725 events. 6932/11725 cut-off events. For 659508/659516 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 85438 event pairs, 1609 based on Foata normal form. 9/11376 useless extension candidates. Maximal degree in co-relation 91217. Up to 9344 conditions per place. [2024-06-27 18:41:48,133 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 496 selfloop transitions, 74 changer transitions 0/580 dead transitions. [2024-06-27 18:41:48,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 580 transitions, 8481 flow [2024-06-27 18:41:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-27 18:41:48,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-06-27 18:41:48,134 INFO L175 Difference]: Start difference. First operand has 320 places, 524 transitions, 6485 flow. Second operand 10 states and 236 transitions. [2024-06-27 18:41:48,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 580 transitions, 8481 flow [2024-06-27 18:41:50,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 580 transitions, 8177 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:50,279 INFO L231 Difference]: Finished difference. Result has 324 places, 534 transitions, 6766 flow [2024-06-27 18:41:50,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6181, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6766, PETRI_PLACES=324, PETRI_TRANSITIONS=534} [2024-06-27 18:41:50,280 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 272 predicate places. [2024-06-27 18:41:50,280 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 534 transitions, 6766 flow [2024-06-27 18:41:50,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:50,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:50,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:41:50,280 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:50,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1588376435, now seen corresponding path program 9 times [2024-06-27 18:41:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382341109] [2024-06-27 18:41:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:51,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:51,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382341109] [2024-06-27 18:41:51,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382341109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:51,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:51,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902415768] [2024-06-27 18:41:51,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:51,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:51,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:51,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:51,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:51,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 534 transitions, 6766 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:51,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:51,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:51,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:54,215 INFO L124 PetriNetUnfolderBase]: 6993/11643 cut-off events. [2024-06-27 18:41:54,218 INFO L125 PetriNetUnfolderBase]: For 697646/697654 co-relation queries the response was YES. [2024-06-27 18:41:54,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94056 conditions, 11643 events. 6993/11643 cut-off events. For 697646/697654 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 83028 event pairs, 1524 based on Foata normal form. 8/11356 useless extension candidates. Maximal degree in co-relation 93902. Up to 9449 conditions per place. [2024-06-27 18:41:54,400 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 503 selfloop transitions, 99 changer transitions 0/612 dead transitions. [2024-06-27 18:41:54,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 612 transitions, 9613 flow [2024-06-27 18:41:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-27 18:41:54,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-27 18:41:54,401 INFO L175 Difference]: Start difference. First operand has 324 places, 534 transitions, 6766 flow. Second operand 10 states and 234 transitions. [2024-06-27 18:41:54,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 612 transitions, 9613 flow [2024-06-27 18:41:57,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 612 transitions, 9174 flow, removed 173 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:57,127 INFO L231 Difference]: Finished difference. Result has 331 places, 561 transitions, 7430 flow [2024-06-27 18:41:57,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6436, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7430, PETRI_PLACES=331, PETRI_TRANSITIONS=561} [2024-06-27 18:41:57,128 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 279 predicate places. [2024-06-27 18:41:57,128 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 561 transitions, 7430 flow [2024-06-27 18:41:57,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:57,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:57,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:57,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:41:57,129 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:57,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1587870980, now seen corresponding path program 4 times [2024-06-27 18:41:57,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:57,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048746870] [2024-06-27 18:41:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:57,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:58,256 INFO 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 18:41:58,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048746870] [2024-06-27 18:41:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048746870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:58,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:58,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:58,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925826333] [2024-06-27 18:41:58,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:58,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:58,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:58,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:58,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 561 transitions, 7430 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:41:58,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:58,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:58,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:01,838 INFO L124 PetriNetUnfolderBase]: 6996/11904 cut-off events. [2024-06-27 18:42:01,838 INFO L125 PetriNetUnfolderBase]: For 713946/713948 co-relation queries the response was YES. [2024-06-27 18:42:01,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95133 conditions, 11904 events. 6996/11904 cut-off events. For 713946/713948 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 87555 event pairs, 1682 based on Foata normal form. 2/11525 useless extension candidates. Maximal degree in co-relation 94974. Up to 9840 conditions per place. [2024-06-27 18:42:01,984 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 565 selfloop transitions, 29 changer transitions 0/604 dead transitions. [2024-06-27 18:42:01,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 604 transitions, 8968 flow [2024-06-27 18:42:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-27 18:42:01,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2024-06-27 18:42:01,985 INFO L175 Difference]: Start difference. First operand has 331 places, 561 transitions, 7430 flow. Second operand 10 states and 222 transitions. [2024-06-27 18:42:01,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 604 transitions, 8968 flow [2024-06-27 18:42:04,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 604 transitions, 8649 flow, removed 133 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:04,589 INFO L231 Difference]: Finished difference. Result has 337 places, 563 transitions, 7316 flow [2024-06-27 18:42:04,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7111, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7316, PETRI_PLACES=337, PETRI_TRANSITIONS=563} [2024-06-27 18:42:04,589 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 285 predicate places. [2024-06-27 18:42:04,590 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 563 transitions, 7316 flow [2024-06-27 18:42:04,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:42:04,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:04,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:04,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:42:04,590 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:04,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1170893509, now seen corresponding path program 1 times [2024-06-27 18:42:04,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:04,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994798289] [2024-06-27 18:42:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:04,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:05,403 INFO 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 18:42:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994798289] [2024-06-27 18:42:05,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994798289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:05,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:05,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:05,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910854237] [2024-06-27 18:42:05,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:05,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:05,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:05,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:42:05,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 563 transitions, 7316 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:05,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:05,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:42:05,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:08,463 INFO L124 PetriNetUnfolderBase]: 6462/10860 cut-off events. [2024-06-27 18:42:08,463 INFO L125 PetriNetUnfolderBase]: For 719724/719860 co-relation queries the response was YES. [2024-06-27 18:42:08,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90526 conditions, 10860 events. 6462/10860 cut-off events. For 719724/719860 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 78886 event pairs, 1433 based on Foata normal form. 54/10567 useless extension candidates. Maximal degree in co-relation 90365. Up to 8916 conditions per place. [2024-06-27 18:42:08,618 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 539 selfloop transitions, 25 changer transitions 0/606 dead transitions. [2024-06-27 18:42:08,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 606 transitions, 8667 flow [2024-06-27 18:42:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:42:08,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 18:42:08,620 INFO L175 Difference]: Start difference. First operand has 337 places, 563 transitions, 7316 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:42:08,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 606 transitions, 8667 flow [2024-06-27 18:42:11,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 606 transitions, 8478 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:11,286 INFO L231 Difference]: Finished difference. Result has 338 places, 568 transitions, 7296 flow [2024-06-27 18:42:11,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7296, PETRI_PLACES=338, PETRI_TRANSITIONS=568} [2024-06-27 18:42:11,286 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 286 predicate places. [2024-06-27 18:42:11,286 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 568 transitions, 7296 flow [2024-06-27 18:42:11,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:11,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:11,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:11,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:42:11,287 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:11,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1743217815, now seen corresponding path program 2 times [2024-06-27 18:42:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455201322] [2024-06-27 18:42:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:11,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:12,147 INFO 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 18:42:12,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:12,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455201322] [2024-06-27 18:42:12,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455201322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:12,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:12,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:12,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036924805] [2024-06-27 18:42:12,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:12,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:12,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:12,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:42:12,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 568 transitions, 7296 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:12,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:12,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:42:12,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:15,013 INFO L124 PetriNetUnfolderBase]: 6510/10930 cut-off events. [2024-06-27 18:42:15,013 INFO L125 PetriNetUnfolderBase]: For 725128/725254 co-relation queries the response was YES. [2024-06-27 18:42:15,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91222 conditions, 10930 events. 6510/10930 cut-off events. For 725128/725254 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 79446 event pairs, 1517 based on Foata normal form. 52/10637 useless extension candidates. Maximal degree in co-relation 91059. Up to 8998 conditions per place. [2024-06-27 18:42:15,402 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 539 selfloop transitions, 21 changer transitions 0/602 dead transitions. [2024-06-27 18:42:15,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 602 transitions, 8614 flow [2024-06-27 18:42:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:42:15,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 18:42:15,403 INFO L175 Difference]: Start difference. First operand has 338 places, 568 transitions, 7296 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:42:15,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 602 transitions, 8614 flow [2024-06-27 18:42:17,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 602 transitions, 8494 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:17,558 INFO L231 Difference]: Finished difference. Result has 341 places, 570 transitions, 7296 flow [2024-06-27 18:42:17,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7296, PETRI_PLACES=341, PETRI_TRANSITIONS=570} [2024-06-27 18:42:17,558 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 289 predicate places. [2024-06-27 18:42:17,558 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 570 transitions, 7296 flow [2024-06-27 18:42:17,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:17,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:17,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:17,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:42:17,559 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:17,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1281562207, now seen corresponding path program 1 times [2024-06-27 18:42:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:17,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118220330] [2024-06-27 18:42:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:17,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:18,619 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 18:42:18,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118220330] [2024-06-27 18:42:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118220330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:18,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:18,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:18,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236197821] [2024-06-27 18:42:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:18,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:18,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:18,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:18,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:42:18,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 570 transitions, 7296 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:42:18,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:18,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:42:18,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:21,733 INFO L124 PetriNetUnfolderBase]: 7148/11784 cut-off events. [2024-06-27 18:42:21,733 INFO L125 PetriNetUnfolderBase]: For 731182/731184 co-relation queries the response was YES. [2024-06-27 18:42:21,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96488 conditions, 11784 events. 7148/11784 cut-off events. For 731182/731184 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 84133 event pairs, 1770 based on Foata normal form. 1/11503 useless extension candidates. Maximal degree in co-relation 96324. Up to 10131 conditions per place. [2024-06-27 18:42:22,146 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 577 selfloop transitions, 32 changer transitions 0/619 dead transitions. [2024-06-27 18:42:22,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 619 transitions, 9055 flow [2024-06-27 18:42:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-27 18:42:22,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:42:22,148 INFO L175 Difference]: Start difference. First operand has 341 places, 570 transitions, 7296 flow. Second operand 10 states and 220 transitions. [2024-06-27 18:42:22,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 619 transitions, 9055 flow [2024-06-27 18:42:24,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 619 transitions, 8953 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:24,725 INFO L231 Difference]: Finished difference. Result has 348 places, 582 transitions, 7680 flow [2024-06-27 18:42:24,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7194, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7680, PETRI_PLACES=348, PETRI_TRANSITIONS=582} [2024-06-27 18:42:24,725 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 296 predicate places. [2024-06-27 18:42:24,725 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 582 transitions, 7680 flow [2024-06-27 18:42:24,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:42:24,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:24,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:24,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:42:24,726 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:24,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash -207569315, now seen corresponding path program 3 times [2024-06-27 18:42:24,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:24,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101396456] [2024-06-27 18:42:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:24,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:25,701 INFO 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 18:42:25,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:25,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101396456] [2024-06-27 18:42:25,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101396456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:25,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:25,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:25,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809326250] [2024-06-27 18:42:25,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:25,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:25,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:25,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:25,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:25,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:42:25,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 582 transitions, 7680 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:25,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:25,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:42:25,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:28,809 INFO L124 PetriNetUnfolderBase]: 6591/11071 cut-off events. [2024-06-27 18:42:28,810 INFO L125 PetriNetUnfolderBase]: For 763373/763499 co-relation queries the response was YES. [2024-06-27 18:42:28,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93306 conditions, 11071 events. 6591/11071 cut-off events. For 763373/763499 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 80608 event pairs, 1522 based on Foata normal form. 52/10775 useless extension candidates. Maximal degree in co-relation 93138. Up to 9098 conditions per place. [2024-06-27 18:42:28,962 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 552 selfloop transitions, 22 changer transitions 0/617 dead transitions. [2024-06-27 18:42:28,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 617 transitions, 9070 flow [2024-06-27 18:42:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:42:28,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081521739130435 [2024-06-27 18:42:28,963 INFO L175 Difference]: Start difference. First operand has 348 places, 582 transitions, 7680 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:42:28,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 617 transitions, 9070 flow [2024-06-27 18:42:31,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 617 transitions, 8710 flow, removed 161 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:31,211 INFO L231 Difference]: Finished difference. Result has 352 places, 586 transitions, 7482 flow [2024-06-27 18:42:31,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7320, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7482, PETRI_PLACES=352, PETRI_TRANSITIONS=586} [2024-06-27 18:42:31,211 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 300 predicate places. [2024-06-27 18:42:31,212 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 586 transitions, 7482 flow [2024-06-27 18:42:31,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:31,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:31,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:31,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:42:31,212 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:31,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:31,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1165167778, now seen corresponding path program 1 times [2024-06-27 18:42:31,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:31,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532893926] [2024-06-27 18:42:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:31,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:32,094 INFO 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 18:42:32,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:32,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532893926] [2024-06-27 18:42:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532893926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:32,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:32,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029568798] [2024-06-27 18:42:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:32,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:32,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:42:32,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 586 transitions, 7482 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 18:42:32,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:32,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:42:32,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand