./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.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/mix016_pso.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/mix016_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix016_pso.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 18:20:10,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:20:11,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:20:11,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:20:11,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:20:11,066 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:20:11,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:20:11,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:20:11,067 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:20:11,070 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:20:11,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:20:11,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:20:11,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:20:11,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:20:11,073 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:20:11,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:20:11,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:20:11,074 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:20:11,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:20:11,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:20:11,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:20:11,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:20:11,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:20:11,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:20:11,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:20:11,084 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:20:11,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:20:11,084 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:20:11,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:20:11,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:20:11,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:20:11,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:20:11,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:20:11,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:20:11,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:20:11,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:20:11,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:20:11,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:20:11,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:20:11,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:20:11,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:20:11,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:20:11,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:20:11,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:20:11,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:20:11,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:20:11,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:20:11,318 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:20:11,319 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:20:11,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix016_pso.opt_tso.opt.yml/witness.yml [2024-06-27 18:20:11,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:20:11,474 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:20:11,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i [2024-06-27 18:20:12,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:20:12,782 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:20:12,782 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i [2024-06-27 18:20:12,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ae81820/4f77b2961fcf4301bf54d08d20fd6a5f/FLAG26a242d28 [2024-06-27 18:20:12,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ae81820/4f77b2961fcf4301bf54d08d20fd6a5f [2024-06-27 18:20:12,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:20:12,813 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:20:12,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:20:12,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:20:12,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:20:12,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:20:11" (1/2) ... [2024-06-27 18:20:12,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358d17aa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:20:12, skipping insertion in model container [2024-06-27 18:20:12,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:20:11" (1/2) ... [2024-06-27 18:20:12,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f8334a6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:20:12, skipping insertion in model container [2024-06-27 18:20:12,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:20:12" (2/2) ... [2024-06-27 18:20:12,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358d17aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:12, skipping insertion in model container [2024-06-27 18:20:12,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:20:12" (2/2) ... [2024-06-27 18:20:12,823 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:20:12,898 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:20:12,899 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:20:12,900 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:20:12,900 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:20:12,900 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:20:12,900 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-27 18:20:12,937 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:20:13,065 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/mix016_pso.opt_tso.opt.i[956,969] [2024-06-27 18:20:13,262 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:20:13,270 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:20:13,311 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/mix016_pso.opt_tso.opt.i[956,969] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:20:13,384 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:20:13,413 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:20:13,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13 WrapperNode [2024-06-27 18:20:13,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:20:13,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:20:13,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:20:13,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:20:13,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,476 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-06-27 18:20:13,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:20:13,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:20:13,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:20:13,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:20:13,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,509 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 18:20:13,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:20:13,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:20:13,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:20:13,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:20:13,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (1/1) ... [2024-06-27 18:20:13,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:20:13,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:20:13,613 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 18:20:13,618 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 18:20:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:20:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:20:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:20:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:20:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:20:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:20:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:20:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:20:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:20:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:20:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:20:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:20:13,647 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 18:20:13,783 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:20:13,785 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:20:14,175 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:20:14,175 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:20:14,334 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:20:14,335 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:20:14,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:20:14 BoogieIcfgContainer [2024-06-27 18:20:14,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:20:14,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:20:14,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:20:14,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:20:14,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:20:11" (1/4) ... [2024-06-27 18:20:14,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ec9fe6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:20:14, skipping insertion in model container [2024-06-27 18:20:14,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:20:12" (2/4) ... [2024-06-27 18:20:14,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ec9fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:20:14, skipping insertion in model container [2024-06-27 18:20:14,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:20:13" (3/4) ... [2024-06-27 18:20:14,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ec9fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:20:14, skipping insertion in model container [2024-06-27 18:20:14,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:20:14" (4/4) ... [2024-06-27 18:20:14,344 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016_pso.opt_tso.opt.i [2024-06-27 18:20:14,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:20:14,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:20:14,358 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:20:14,405 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:20:14,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:20:14,466 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:20:14,466 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:20:14,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 18:20:14,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:20:14,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:20:14,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:20:14,491 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;@209d83b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:20:14,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:20:14,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:20:14,495 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:20:14,495 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:20:14,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:14,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:20:14,496 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 18:20:14,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 379867252, now seen corresponding path program 1 times [2024-06-27 18:20:14,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:14,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969662771] [2024-06-27 18:20:14,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:14,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:15,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:15,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969662771] [2024-06-27 18:20:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969662771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:15,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:15,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:20:15,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784246796] [2024-06-27 18:20:15,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:20:15,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:15,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:20:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:20:15,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-06-27 18:20:15,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:15,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:15,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-06-27 18:20:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:15,933 INFO L124 PetriNetUnfolderBase]: 2349/3982 cut-off events. [2024-06-27 18:20:15,934 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 18:20:15,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 3982 events. 2349/3982 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 25874 event pairs, 1832 based on Foata normal form. 121/3759 useless extension candidates. Maximal degree in co-relation 7448. Up to 3411 conditions per place. [2024-06-27 18:20:15,958 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 39 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:20:15,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 219 flow [2024-06-27 18:20:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:20:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:20:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 18:20:15,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7092198581560284 [2024-06-27 18:20:15,969 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 100 transitions. [2024-06-27 18:20:15,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 219 flow [2024-06-27 18:20:15,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:15,974 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 18:20:15,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 18:20:15,978 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:20:15,979 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 18:20:15,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:15,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:15,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:15,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:20:15,980 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 18:20:15,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash -19758893, now seen corresponding path program 1 times [2024-06-27 18:20:15,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:15,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691195542] [2024-06-27 18:20:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:15,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:16,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:16,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691195542] [2024-06-27 18:20:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691195542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:16,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:20:16,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551346084] [2024-06-27 18:20:16,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:16,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:20:16,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:16,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:20:16,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:20:16,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:20:16,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:16,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:16,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:20:16,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:16,978 INFO L124 PetriNetUnfolderBase]: 2679/3962 cut-off events. [2024-06-27 18:20:16,979 INFO L125 PetriNetUnfolderBase]: For 613/613 co-relation queries the response was YES. [2024-06-27 18:20:16,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8931 conditions, 3962 events. 2679/3962 cut-off events. For 613/613 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 22393 event pairs, 1142 based on Foata normal form. 3/3819 useless extension candidates. Maximal degree in co-relation 8919. Up to 3855 conditions per place. [2024-06-27 18:20:16,998 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 51 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2024-06-27 18:20:16,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 315 flow [2024-06-27 18:20:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:20:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:20:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 18:20:17,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675531914893617 [2024-06-27 18:20:17,001 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 127 transitions. [2024-06-27 18:20:17,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 315 flow [2024-06-27 18:20:17,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:20:17,003 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-27 18:20:17,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 18:20:17,003 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 18:20:17,004 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-27 18:20:17,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:17,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:17,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:17,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:20:17,005 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 18:20:17,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash -225604236, now seen corresponding path program 1 times [2024-06-27 18:20:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201993480] [2024-06-27 18:20:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:17,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:17,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:17,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201993480] [2024-06-27 18:20:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201993480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:17,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:17,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:20:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046749636] [2024-06-27 18:20:17,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:17,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:20:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:17,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:20:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:20:17,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:20:17,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 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 18:20:17,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:17,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:20:17,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:18,327 INFO L124 PetriNetUnfolderBase]: 3410/4983 cut-off events. [2024-06-27 18:20:18,328 INFO L125 PetriNetUnfolderBase]: For 1963/1963 co-relation queries the response was YES. [2024-06-27 18:20:18,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 4983 events. 3410/4983 cut-off events. For 1963/1963 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 27617 event pairs, 930 based on Foata normal form. 6/4808 useless extension candidates. Maximal degree in co-relation 12312. Up to 4812 conditions per place. [2024-06-27 18:20:18,352 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 71 selfloop transitions, 16 changer transitions 0/99 dead transitions. [2024-06-27 18:20:18,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 482 flow [2024-06-27 18:20:18,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 18:20:18,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 18:20:18,355 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 6 states and 180 transitions. [2024-06-27 18:20:18,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 482 flow [2024-06-27 18:20:18,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 454 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:18,358 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 235 flow [2024-06-27 18:20:18,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-06-27 18:20:18,358 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-06-27 18:20:18,359 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 235 flow [2024-06-27 18:20:18,359 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 18:20:18,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:18,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:18,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:20:18,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:18,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:18,360 INFO L85 PathProgramCache]: Analyzing trace with hash -776883720, now seen corresponding path program 1 times [2024-06-27 18:20:18,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:18,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081067422] [2024-06-27 18:20:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:18,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:18,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:18,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081067422] [2024-06-27 18:20:18,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081067422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:18,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:18,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:20:18,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227498418] [2024-06-27 18:20:18,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:18,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:20:18,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:18,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:20:18,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:20:18,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:18,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 235 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 18:20:18,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:18,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:18,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:19,463 INFO L124 PetriNetUnfolderBase]: 3398/5165 cut-off events. [2024-06-27 18:20:19,464 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2024-06-27 18:20:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13674 conditions, 5165 events. 3398/5165 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29590 event pairs, 1074 based on Foata normal form. 4/4965 useless extension candidates. Maximal degree in co-relation 13657. Up to 4849 conditions per place. [2024-06-27 18:20:19,489 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 62 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-27 18:20:19,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 83 transitions, 451 flow [2024-06-27 18:20:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:20:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:20:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 18:20:19,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2024-06-27 18:20:19,491 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 235 flow. Second operand 5 states and 133 transitions. [2024-06-27 18:20:19,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 83 transitions, 451 flow [2024-06-27 18:20:19,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 413 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:19,496 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 256 flow [2024-06-27 18:20:19,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-27 18:20:19,496 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-27 18:20:19,497 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 256 flow [2024-06-27 18:20:19,497 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 18:20:19,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:19,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:19,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:20:19,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:19,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1685501874, now seen corresponding path program 1 times [2024-06-27 18:20:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:19,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937639521] [2024-06-27 18:20:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:19,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937639521] [2024-06-27 18:20:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937639521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:19,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:19,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:20:19,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730310238] [2024-06-27 18:20:19,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:19,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:20:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:20:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:20:19,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-27 18:20:19,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 256 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 18:20:19,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:19,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-27 18:20:19,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:19,770 INFO L124 PetriNetUnfolderBase]: 1193/2534 cut-off events. [2024-06-27 18:20:19,770 INFO L125 PetriNetUnfolderBase]: For 1539/1596 co-relation queries the response was YES. [2024-06-27 18:20:19,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 2534 events. 1193/2534 cut-off events. For 1539/1596 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 19530 event pairs, 416 based on Foata normal form. 2/2320 useless extension candidates. Maximal degree in co-relation 5398. Up to 1604 conditions per place. [2024-06-27 18:20:19,783 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-27 18:20:19,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 298 flow [2024-06-27 18:20:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:20:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:20:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 18:20:19,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375886524822695 [2024-06-27 18:20:19,784 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 256 flow. Second operand 3 states and 104 transitions. [2024-06-27 18:20:19,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 298 flow [2024-06-27 18:20:19,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 278 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:19,787 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 210 flow [2024-06-27 18:20:19,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-06-27 18:20:19,787 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-06-27 18:20:19,788 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 210 flow [2024-06-27 18:20:19,788 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 18:20:19,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:19,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:19,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:20:19,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:19,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:19,789 INFO L85 PathProgramCache]: Analyzing trace with hash 738884089, now seen corresponding path program 1 times [2024-06-27 18:20:19,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:19,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805698467] [2024-06-27 18:20:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:19,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:20,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805698467] [2024-06-27 18:20:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805698467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:20,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:20,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:20,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796394783] [2024-06-27 18:20:20,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:20,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:20,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:20,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:20,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:20,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 210 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 18:20:20,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:20,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:20,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:21,219 INFO L124 PetriNetUnfolderBase]: 3457/5056 cut-off events. [2024-06-27 18:20:21,220 INFO L125 PetriNetUnfolderBase]: For 6293/6293 co-relation queries the response was YES. [2024-06-27 18:20:21,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14071 conditions, 5056 events. 3457/5056 cut-off events. For 6293/6293 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 27236 event pairs, 997 based on Foata normal form. 4/5051 useless extension candidates. Maximal degree in co-relation 14053. Up to 4811 conditions per place. [2024-06-27 18:20:21,243 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 69 selfloop transitions, 16 changer transitions 4/99 dead transitions. [2024-06-27 18:20:21,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 530 flow [2024-06-27 18:20:21,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-27 18:20:21,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-27 18:20:21,244 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 210 flow. Second operand 6 states and 160 transitions. [2024-06-27 18:20:21,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 530 flow [2024-06-27 18:20:21,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:21,250 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 276 flow [2024-06-27 18:20:21,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-27 18:20:21,251 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-06-27 18:20:21,251 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 276 flow [2024-06-27 18:20:21,251 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 18:20:21,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:21,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:21,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:20:21,252 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 18:20:21,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:21,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1684542499, now seen corresponding path program 2 times [2024-06-27 18:20:21,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:21,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701926890] [2024-06-27 18:20:21,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:21,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:21,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701926890] [2024-06-27 18:20:21,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701926890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:21,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:21,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911595135] [2024-06-27 18:20:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:21,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:21,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:21,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 276 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 18:20:21,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:21,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:21,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:22,510 INFO L124 PetriNetUnfolderBase]: 3011/4425 cut-off events. [2024-06-27 18:20:22,511 INFO L125 PetriNetUnfolderBase]: For 7250/7256 co-relation queries the response was YES. [2024-06-27 18:20:22,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13185 conditions, 4425 events. 3011/4425 cut-off events. For 7250/7256 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23545 event pairs, 890 based on Foata normal form. 8/4426 useless extension candidates. Maximal degree in co-relation 13165. Up to 4206 conditions per place. [2024-06-27 18:20:22,542 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 63 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-27 18:20:22,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 500 flow [2024-06-27 18:20:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:20:22,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:20:22,545 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 276 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:20:22,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 500 flow [2024-06-27 18:20:22,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 470 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:22,556 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 286 flow [2024-06-27 18:20:22,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-06-27 18:20:22,558 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-27 18:20:22,558 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 286 flow [2024-06-27 18:20:22,558 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 18:20:22,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:22,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:22,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:20:22,559 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 18:20:22,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:22,559 INFO L85 PathProgramCache]: Analyzing trace with hash 66106597, now seen corresponding path program 1 times [2024-06-27 18:20:22,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:22,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552432039] [2024-06-27 18:20:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:22,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:23,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:23,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552432039] [2024-06-27 18:20:23,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552432039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:23,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:23,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:23,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899612084] [2024-06-27 18:20:23,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:23,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:23,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:23,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:23,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:23,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:23,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:23,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:23,982 INFO L124 PetriNetUnfolderBase]: 3129/4618 cut-off events. [2024-06-27 18:20:23,982 INFO L125 PetriNetUnfolderBase]: For 8138/8140 co-relation queries the response was YES. [2024-06-27 18:20:23,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13856 conditions, 4618 events. 3129/4618 cut-off events. For 8138/8140 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 24723 event pairs, 972 based on Foata normal form. 6/4617 useless extension candidates. Maximal degree in co-relation 13834. Up to 4389 conditions per place. [2024-06-27 18:20:24,008 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 86 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-27 18:20:24,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 702 flow [2024-06-27 18:20:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:20:24,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 18:20:24,011 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 286 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:20:24,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 702 flow [2024-06-27 18:20:24,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 121 transitions, 646 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:24,020 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 404 flow [2024-06-27 18:20:24,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=404, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2024-06-27 18:20:24,022 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-27 18:20:24,023 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 404 flow [2024-06-27 18:20:24,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:24,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:24,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:24,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:20:24,024 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 18:20:24,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:24,024 INFO L85 PathProgramCache]: Analyzing trace with hash 456707271, now seen corresponding path program 2 times [2024-06-27 18:20:24,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:24,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134402684] [2024-06-27 18:20:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:24,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:24,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134402684] [2024-06-27 18:20:24,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134402684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:24,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:24,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628828627] [2024-06-27 18:20:24,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:24,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:24,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:24,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:24,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 404 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:24,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:24,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:24,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:25,504 INFO L124 PetriNetUnfolderBase]: 3175/4705 cut-off events. [2024-06-27 18:20:25,505 INFO L125 PetriNetUnfolderBase]: For 11302/11306 co-relation queries the response was YES. [2024-06-27 18:20:25,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15216 conditions, 4705 events. 3175/4705 cut-off events. For 11302/11306 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 25429 event pairs, 957 based on Foata normal form. 8/4707 useless extension candidates. Maximal degree in co-relation 15192. Up to 4410 conditions per place. [2024-06-27 18:20:25,528 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 85 selfloop transitions, 26 changer transitions 0/121 dead transitions. [2024-06-27 18:20:25,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 784 flow [2024-06-27 18:20:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:20:25,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-27 18:20:25,530 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 404 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:20:25,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 784 flow [2024-06-27 18:20:25,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 744 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:25,538 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 463 flow [2024-06-27 18:20:25,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-27 18:20:25,539 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2024-06-27 18:20:25,539 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 463 flow [2024-06-27 18:20:25,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:25,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:25,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:25,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:20:25,539 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 18:20:25,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:25,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1259869063, now seen corresponding path program 3 times [2024-06-27 18:20:25,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:25,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035374660] [2024-06-27 18:20:25,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:25,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:26,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:26,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035374660] [2024-06-27 18:20:26,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035374660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:26,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:26,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843908581] [2024-06-27 18:20:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:26,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:26,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:26,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:26,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 463 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:26,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:26,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:26,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:27,112 INFO L124 PetriNetUnfolderBase]: 3221/4791 cut-off events. [2024-06-27 18:20:27,112 INFO L125 PetriNetUnfolderBase]: For 15270/15272 co-relation queries the response was YES. [2024-06-27 18:20:27,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16404 conditions, 4791 events. 3221/4791 cut-off events. For 15270/15272 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 26045 event pairs, 812 based on Foata normal form. 4/4782 useless extension candidates. Maximal degree in co-relation 16379. Up to 4262 conditions per place. [2024-06-27 18:20:27,133 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 80 selfloop transitions, 37 changer transitions 0/127 dead transitions. [2024-06-27 18:20:27,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 127 transitions, 913 flow [2024-06-27 18:20:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:20:27,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2024-06-27 18:20:27,134 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 463 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:20:27,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 127 transitions, 913 flow [2024-06-27 18:20:27,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 127 transitions, 828 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:27,145 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 538 flow [2024-06-27 18:20:27,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=538, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-27 18:20:27,146 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-27 18:20:27,146 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 538 flow [2024-06-27 18:20:27,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:27,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:27,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:27,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:20:27,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:27,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:27,147 INFO L85 PathProgramCache]: Analyzing trace with hash 657080421, now seen corresponding path program 4 times [2024-06-27 18:20:27,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:27,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232530628] [2024-06-27 18:20:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:27,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:27,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:27,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232530628] [2024-06-27 18:20:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232530628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:27,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:27,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:27,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851720857] [2024-06-27 18:20:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:27,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:27,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:27,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:27,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 538 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:27,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:27,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:27,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:28,605 INFO L124 PetriNetUnfolderBase]: 3211/4778 cut-off events. [2024-06-27 18:20:28,606 INFO L125 PetriNetUnfolderBase]: For 15317/15322 co-relation queries the response was YES. [2024-06-27 18:20:28,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16350 conditions, 4778 events. 3211/4778 cut-off events. For 15317/15322 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 25992 event pairs, 821 based on Foata normal form. 4/4763 useless extension candidates. Maximal degree in co-relation 16324. Up to 4254 conditions per place. [2024-06-27 18:20:28,636 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 75 selfloop transitions, 37 changer transitions 0/122 dead transitions. [2024-06-27 18:20:28,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 866 flow [2024-06-27 18:20:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:20:28,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-27 18:20:28,638 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 538 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:20:28,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 866 flow [2024-06-27 18:20:28,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 808 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:28,655 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 562 flow [2024-06-27 18:20:28,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=562, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2024-06-27 18:20:28,656 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-06-27 18:20:28,656 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 562 flow [2024-06-27 18:20:28,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:28,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:28,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:28,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:20:28,657 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 18:20:28,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1437246847, now seen corresponding path program 1 times [2024-06-27 18:20:28,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:28,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288370227] [2024-06-27 18:20:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:28,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:29,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:29,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288370227] [2024-06-27 18:20:29,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288370227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:29,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:29,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:29,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616311237] [2024-06-27 18:20:29,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:29,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:29,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:29,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:29,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:29,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:29,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 562 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 18:20:29,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:29,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:29,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:30,462 INFO L124 PetriNetUnfolderBase]: 2773/4318 cut-off events. [2024-06-27 18:20:30,463 INFO L125 PetriNetUnfolderBase]: For 14301/14303 co-relation queries the response was YES. [2024-06-27 18:20:30,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14842 conditions, 4318 events. 2773/4318 cut-off events. For 14301/14303 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 24517 event pairs, 725 based on Foata normal form. 4/4299 useless extension candidates. Maximal degree in co-relation 14814. Up to 3935 conditions per place. [2024-06-27 18:20:30,484 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 101 selfloop transitions, 13 changer transitions 0/125 dead transitions. [2024-06-27 18:20:30,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 931 flow [2024-06-27 18:20:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:20:30,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:20:30,486 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 562 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:20:30,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 931 flow [2024-06-27 18:20:30,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 828 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:30,497 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 543 flow [2024-06-27 18:20:30,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-06-27 18:20:30,498 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-06-27 18:20:30,498 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 543 flow [2024-06-27 18:20:30,498 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 18:20:30,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:30,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:30,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:20:30,499 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:30,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 564105450, now seen corresponding path program 1 times [2024-06-27 18:20:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046565851] [2024-06-27 18:20:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:31,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:31,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046565851] [2024-06-27 18:20:31,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046565851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:31,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:31,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:20:31,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867622436] [2024-06-27 18:20:31,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:20:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:20:31,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:20:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:20:31,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 543 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:31,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:31,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:20:31,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:31,570 INFO L124 PetriNetUnfolderBase]: 2544/4306 cut-off events. [2024-06-27 18:20:31,570 INFO L125 PetriNetUnfolderBase]: For 15903/15922 co-relation queries the response was YES. [2024-06-27 18:20:31,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14579 conditions, 4306 events. 2544/4306 cut-off events. For 15903/15922 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27510 event pairs, 1036 based on Foata normal form. 18/4212 useless extension candidates. Maximal degree in co-relation 14549. Up to 3677 conditions per place. [2024-06-27 18:20:31,592 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 85 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2024-06-27 18:20:31,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 818 flow [2024-06-27 18:20:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:20:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:20:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 18:20:31,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:20:31,593 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 543 flow. Second operand 5 states and 125 transitions. [2024-06-27 18:20:31,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 818 flow [2024-06-27 18:20:31,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 773 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:31,607 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 588 flow [2024-06-27 18:20:31,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-06-27 18:20:31,608 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-06-27 18:20:31,608 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 588 flow [2024-06-27 18:20:31,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:31,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:31,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:31,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:20:31,609 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 18:20:31,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash 307400933, now seen corresponding path program 1 times [2024-06-27 18:20:31,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:31,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57216933] [2024-06-27 18:20:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57216933] [2024-06-27 18:20:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57216933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:32,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:32,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561422942] [2024-06-27 18:20:32,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:32,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:32,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:20:32,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 588 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 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 18:20:32,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:32,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:20:32,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:32,968 INFO L124 PetriNetUnfolderBase]: 2548/4265 cut-off events. [2024-06-27 18:20:32,968 INFO L125 PetriNetUnfolderBase]: For 17913/17932 co-relation queries the response was YES. [2024-06-27 18:20:32,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15219 conditions, 4265 events. 2548/4265 cut-off events. For 17913/17932 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26907 event pairs, 1033 based on Foata normal form. 19/4184 useless extension candidates. Maximal degree in co-relation 15187. Up to 3661 conditions per place. [2024-06-27 18:20:32,994 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 91 selfloop transitions, 12 changer transitions 0/119 dead transitions. [2024-06-27 18:20:32,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 874 flow [2024-06-27 18:20:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:20:32,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-27 18:20:32,996 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 588 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:20:32,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 874 flow [2024-06-27 18:20:33,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 853 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:33,010 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 625 flow [2024-06-27 18:20:33,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2024-06-27 18:20:33,010 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2024-06-27 18:20:33,010 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 625 flow [2024-06-27 18:20:33,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 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 18:20:33,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:33,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:33,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:20:33,011 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 18:20:33,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1643321360, now seen corresponding path program 1 times [2024-06-27 18:20:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176171282] [2024-06-27 18:20:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:33,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:33,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:33,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176171282] [2024-06-27 18:20:33,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176171282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:33,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153913429] [2024-06-27 18:20:33,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:33,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:33,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:33,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:33,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 625 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 18:20:33,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:33,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:33,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:34,815 INFO L124 PetriNetUnfolderBase]: 3544/5823 cut-off events. [2024-06-27 18:20:34,815 INFO L125 PetriNetUnfolderBase]: For 29841/29845 co-relation queries the response was YES. [2024-06-27 18:20:34,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21735 conditions, 5823 events. 3544/5823 cut-off events. For 29841/29845 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36327 event pairs, 887 based on Foata normal form. 20/5671 useless extension candidates. Maximal degree in co-relation 21701. Up to 4440 conditions per place. [2024-06-27 18:20:34,862 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 127 selfloop transitions, 33 changer transitions 0/170 dead transitions. [2024-06-27 18:20:34,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 170 transitions, 1257 flow [2024-06-27 18:20:34,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:20:34,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-27 18:20:34,865 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 625 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:20:34,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 170 transitions, 1257 flow [2024-06-27 18:20:34,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 170 transitions, 1221 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:34,902 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 699 flow [2024-06-27 18:20:34,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=699, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-06-27 18:20:34,904 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 41 predicate places. [2024-06-27 18:20:34,904 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 699 flow [2024-06-27 18:20:34,904 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 18:20:34,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:34,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:20:34,905 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 18:20:34,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1643260910, now seen corresponding path program 2 times [2024-06-27 18:20:34,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540505054] [2024-06-27 18:20:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:35,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:35,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540505054] [2024-06-27 18:20:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540505054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:35,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851787408] [2024-06-27 18:20:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:35,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:36,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:36,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 699 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 18:20:36,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:36,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:36,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:36,928 INFO L124 PetriNetUnfolderBase]: 3508/5789 cut-off events. [2024-06-27 18:20:36,928 INFO L125 PetriNetUnfolderBase]: For 32072/32076 co-relation queries the response was YES. [2024-06-27 18:20:36,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21768 conditions, 5789 events. 3508/5789 cut-off events. For 32072/32076 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36227 event pairs, 1164 based on Foata normal form. 24/5629 useless extension candidates. Maximal degree in co-relation 21733. Up to 4668 conditions per place. [2024-06-27 18:20:36,962 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 116 selfloop transitions, 30 changer transitions 0/156 dead transitions. [2024-06-27 18:20:36,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 156 transitions, 1177 flow [2024-06-27 18:20:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:20:36,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:20:36,964 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 699 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:20:36,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 156 transitions, 1177 flow [2024-06-27 18:20:36,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 1128 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:36,994 INFO L231 Difference]: Finished difference. Result has 97 places, 101 transitions, 719 flow [2024-06-27 18:20:36,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=719, PETRI_PLACES=97, PETRI_TRANSITIONS=101} [2024-06-27 18:20:36,994 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-27 18:20:36,995 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 101 transitions, 719 flow [2024-06-27 18:20:36,995 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 18:20:36,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:36,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:36,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:20:36,995 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 18:20:36,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash -446568058, now seen corresponding path program 3 times [2024-06-27 18:20:36,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:36,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698797853] [2024-06-27 18:20:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:36,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:37,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698797853] [2024-06-27 18:20:37,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698797853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:37,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:37,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:37,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847521322] [2024-06-27 18:20:37,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:37,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:37,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:37,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 101 transitions, 719 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 18:20:37,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:37,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:37,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:38,785 INFO L124 PetriNetUnfolderBase]: 3675/6004 cut-off events. [2024-06-27 18:20:38,785 INFO L125 PetriNetUnfolderBase]: For 35638/35643 co-relation queries the response was YES. [2024-06-27 18:20:38,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23127 conditions, 6004 events. 3675/6004 cut-off events. For 35638/35643 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 37361 event pairs, 1021 based on Foata normal form. 20/5849 useless extension candidates. Maximal degree in co-relation 23090. Up to 4746 conditions per place. [2024-06-27 18:20:38,826 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 103 selfloop transitions, 42 changer transitions 0/155 dead transitions. [2024-06-27 18:20:38,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 155 transitions, 1203 flow [2024-06-27 18:20:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:20:38,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 18:20:38,827 INFO L175 Difference]: Start difference. First operand has 97 places, 101 transitions, 719 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:20:38,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 155 transitions, 1203 flow [2024-06-27 18:20:38,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 1136 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:38,861 INFO L231 Difference]: Finished difference. Result has 98 places, 102 transitions, 765 flow [2024-06-27 18:20:38,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=765, PETRI_PLACES=98, PETRI_TRANSITIONS=102} [2024-06-27 18:20:38,861 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-06-27 18:20:38,862 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 102 transitions, 765 flow [2024-06-27 18:20:38,862 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 18:20:38,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:38,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:20:38,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:38,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -446383360, now seen corresponding path program 1 times [2024-06-27 18:20:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:38,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378204433] [2024-06-27 18:20:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:39,884 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 18:20:39,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:39,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378204433] [2024-06-27 18:20:39,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378204433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:39,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:39,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:39,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653564101] [2024-06-27 18:20:39,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:39,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:39,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:39,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:39,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:39,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:39,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 102 transitions, 765 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 18:20:39,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:39,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:39,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:40,993 INFO L124 PetriNetUnfolderBase]: 3712/6097 cut-off events. [2024-06-27 18:20:40,994 INFO L125 PetriNetUnfolderBase]: For 38445/38452 co-relation queries the response was YES. [2024-06-27 18:20:41,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23792 conditions, 6097 events. 3712/6097 cut-off events. For 38445/38452 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 38304 event pairs, 1059 based on Foata normal form. 8/5915 useless extension candidates. Maximal degree in co-relation 23754. Up to 5205 conditions per place. [2024-06-27 18:20:41,040 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 119 selfloop transitions, 28 changer transitions 0/157 dead transitions. [2024-06-27 18:20:41,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 157 transitions, 1266 flow [2024-06-27 18:20:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:20:41,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 18:20:41,043 INFO L175 Difference]: Start difference. First operand has 98 places, 102 transitions, 765 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:20:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 157 transitions, 1266 flow [2024-06-27 18:20:41,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 157 transitions, 1173 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:41,151 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 793 flow [2024-06-27 18:20:41,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-06-27 18:20:41,152 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-06-27 18:20:41,152 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 793 flow [2024-06-27 18:20:41,152 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 18:20:41,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:41,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:20:41,153 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 18:20:41,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 928023049, now seen corresponding path program 1 times [2024-06-27 18:20:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:41,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344064971] [2024-06-27 18:20:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:41,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344064971] [2024-06-27 18:20:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344064971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:41,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:41,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546694479] [2024-06-27 18:20:41,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:41,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:41,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:41,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:41,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:41,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:41,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 793 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 18:20:41,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:41,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:41,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:42,524 INFO L124 PetriNetUnfolderBase]: 3488/5743 cut-off events. [2024-06-27 18:20:42,525 INFO L125 PetriNetUnfolderBase]: For 40879/40906 co-relation queries the response was YES. [2024-06-27 18:20:42,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23130 conditions, 5743 events. 3488/5743 cut-off events. For 40879/40906 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 37202 event pairs, 1316 based on Foata normal form. 19/5618 useless extension candidates. Maximal degree in co-relation 23090. Up to 4984 conditions per place. [2024-06-27 18:20:42,564 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 106 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2024-06-27 18:20:42,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 146 transitions, 1265 flow [2024-06-27 18:20:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 18:20:42,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 18:20:42,567 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 793 flow. Second operand 6 states and 148 transitions. [2024-06-27 18:20:42,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 146 transitions, 1265 flow [2024-06-27 18:20:42,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 146 transitions, 1182 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:42,602 INFO L231 Difference]: Finished difference. Result has 103 places, 124 transitions, 963 flow [2024-06-27 18:20:42,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=963, PETRI_PLACES=103, PETRI_TRANSITIONS=124} [2024-06-27 18:20:42,602 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-06-27 18:20:42,602 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 124 transitions, 963 flow [2024-06-27 18:20:42,603 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 18:20:42,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:42,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:42,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:20:42,603 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:42,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2021869178, now seen corresponding path program 4 times [2024-06-27 18:20:42,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:42,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36652918] [2024-06-27 18:20:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:43,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:43,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36652918] [2024-06-27 18:20:43,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36652918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:43,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:43,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:43,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24004145] [2024-06-27 18:20:43,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:43,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:43,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:43,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:43,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:43,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 124 transitions, 963 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 18:20:43,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:43,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:43,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:44,512 INFO L124 PetriNetUnfolderBase]: 3823/6203 cut-off events. [2024-06-27 18:20:44,513 INFO L125 PetriNetUnfolderBase]: For 47714/47719 co-relation queries the response was YES. [2024-06-27 18:20:44,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25856 conditions, 6203 events. 3823/6203 cut-off events. For 47714/47719 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38883 event pairs, 1131 based on Foata normal form. 20/6059 useless extension candidates. Maximal degree in co-relation 25814. Up to 4970 conditions per place. [2024-06-27 18:20:44,562 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 109 selfloop transitions, 56 changer transitions 0/175 dead transitions. [2024-06-27 18:20:44,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 175 transitions, 1499 flow [2024-06-27 18:20:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:20:44,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:20:44,564 INFO L175 Difference]: Start difference. First operand has 103 places, 124 transitions, 963 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:20:44,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 175 transitions, 1499 flow [2024-06-27 18:20:44,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 175 transitions, 1456 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:44,615 INFO L231 Difference]: Finished difference. Result has 108 places, 125 transitions, 1065 flow [2024-06-27 18:20:44,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1065, PETRI_PLACES=108, PETRI_TRANSITIONS=125} [2024-06-27 18:20:44,616 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-06-27 18:20:44,616 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 125 transitions, 1065 flow [2024-06-27 18:20:44,616 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 18:20:44,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:44,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:44,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:20:44,616 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:44,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:44,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2021684480, now seen corresponding path program 2 times [2024-06-27 18:20:44,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:44,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112310785] [2024-06-27 18:20:44,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:44,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:45,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:45,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112310785] [2024-06-27 18:20:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112310785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:45,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:45,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:45,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124579068] [2024-06-27 18:20:45,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:45,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:45,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:45,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:45,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:45,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 125 transitions, 1065 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 18:20:45,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:45,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:45,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:47,046 INFO L124 PetriNetUnfolderBase]: 3883/6323 cut-off events. [2024-06-27 18:20:47,047 INFO L125 PetriNetUnfolderBase]: For 51862/51874 co-relation queries the response was YES. [2024-06-27 18:20:47,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26870 conditions, 6323 events. 3883/6323 cut-off events. For 51862/51874 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 40133 event pairs, 1243 based on Foata normal form. 12/6183 useless extension candidates. Maximal degree in co-relation 26827. Up to 5453 conditions per place. [2024-06-27 18:20:47,099 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 133 selfloop transitions, 35 changer transitions 0/178 dead transitions. [2024-06-27 18:20:47,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 178 transitions, 1622 flow [2024-06-27 18:20:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:47,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:20:47,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 18:20:47,102 INFO L175 Difference]: Start difference. First operand has 108 places, 125 transitions, 1065 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:20:47,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 178 transitions, 1622 flow [2024-06-27 18:20:47,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 178 transitions, 1495 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:47,162 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 1090 flow [2024-06-27 18:20:47,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1090, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-06-27 18:20:47,162 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-06-27 18:20:47,162 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 1090 flow [2024-06-27 18:20:47,163 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 18:20:47,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:47,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:47,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:20:47,163 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:47,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:47,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1306562624, now seen corresponding path program 3 times [2024-06-27 18:20:47,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:47,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785032482] [2024-06-27 18:20:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:47,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:48,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:48,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785032482] [2024-06-27 18:20:48,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785032482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:48,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:48,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:48,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533109311] [2024-06-27 18:20:48,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:48,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:48,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:48,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:48,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 1090 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 18:20:48,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:48,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:48,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:49,624 INFO L124 PetriNetUnfolderBase]: 3920/6353 cut-off events. [2024-06-27 18:20:49,625 INFO L125 PetriNetUnfolderBase]: For 54105/54114 co-relation queries the response was YES. [2024-06-27 18:20:49,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27484 conditions, 6353 events. 3920/6353 cut-off events. For 54105/54114 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 40056 event pairs, 1233 based on Foata normal form. 10/6211 useless extension candidates. Maximal degree in co-relation 27439. Up to 5508 conditions per place. [2024-06-27 18:20:49,667 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 133 selfloop transitions, 41 changer transitions 0/184 dead transitions. [2024-06-27 18:20:49,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 184 transitions, 1672 flow [2024-06-27 18:20:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:20:49,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 18:20:49,669 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 1090 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:20:49,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 184 transitions, 1672 flow [2024-06-27 18:20:49,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 184 transitions, 1569 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:49,712 INFO L231 Difference]: Finished difference. Result has 116 places, 138 transitions, 1162 flow [2024-06-27 18:20:49,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1162, PETRI_PLACES=116, PETRI_TRANSITIONS=138} [2024-06-27 18:20:49,713 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2024-06-27 18:20:49,713 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 138 transitions, 1162 flow [2024-06-27 18:20:49,714 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 18:20:49,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:49,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:49,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:20:49,714 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 18:20:49,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:49,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1315133504, now seen corresponding path program 4 times [2024-06-27 18:20:49,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:49,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256150397] [2024-06-27 18:20:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:49,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:50,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:50,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256150397] [2024-06-27 18:20:50,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256150397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:50,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:50,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:50,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420800216] [2024-06-27 18:20:50,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:50,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:50,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:50,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:50,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:50,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:50,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 138 transitions, 1162 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 18:20:50,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:50,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:50,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:51,622 INFO L124 PetriNetUnfolderBase]: 3912/6333 cut-off events. [2024-06-27 18:20:51,623 INFO L125 PetriNetUnfolderBase]: For 57127/57136 co-relation queries the response was YES. [2024-06-27 18:20:51,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27660 conditions, 6333 events. 3912/6333 cut-off events. For 57127/57136 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39918 event pairs, 1113 based on Foata normal form. 10/6199 useless extension candidates. Maximal degree in co-relation 27613. Up to 5351 conditions per place. [2024-06-27 18:20:51,673 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 129 selfloop transitions, 48 changer transitions 0/187 dead transitions. [2024-06-27 18:20:51,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 187 transitions, 1718 flow [2024-06-27 18:20:51,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:20:51,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 18:20:51,675 INFO L175 Difference]: Start difference. First operand has 116 places, 138 transitions, 1162 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:20:51,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 187 transitions, 1718 flow [2024-06-27 18:20:51,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 187 transitions, 1643 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:51,736 INFO L231 Difference]: Finished difference. Result has 122 places, 140 transitions, 1234 flow [2024-06-27 18:20:51,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=122, PETRI_TRANSITIONS=140} [2024-06-27 18:20:51,736 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 69 predicate places. [2024-06-27 18:20:51,736 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 140 transitions, 1234 flow [2024-06-27 18:20:51,737 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 18:20:51,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:51,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:51,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:20:51,737 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 18:20:51,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash 939480649, now seen corresponding path program 2 times [2024-06-27 18:20:51,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:51,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800939789] [2024-06-27 18:20:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:51,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:52,242 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 18:20:52,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:52,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800939789] [2024-06-27 18:20:52,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800939789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:52,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717653719] [2024-06-27 18:20:52,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:52,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:52,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:52,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:52,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 140 transitions, 1234 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 18:20:52,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:52,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:52,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:52,964 INFO L124 PetriNetUnfolderBase]: 3653/6065 cut-off events. [2024-06-27 18:20:52,965 INFO L125 PetriNetUnfolderBase]: For 60099/60140 co-relation queries the response was YES. [2024-06-27 18:20:52,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26410 conditions, 6065 events. 3653/6065 cut-off events. For 60099/60140 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39856 event pairs, 1358 based on Foata normal form. 18/5920 useless extension candidates. Maximal degree in co-relation 26361. Up to 5198 conditions per place. [2024-06-27 18:20:53,010 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 110 selfloop transitions, 28 changer transitions 0/161 dead transitions. [2024-06-27 18:20:53,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 161 transitions, 1596 flow [2024-06-27 18:20:53,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:20:53,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 18:20:53,011 INFO L175 Difference]: Start difference. First operand has 122 places, 140 transitions, 1234 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:20:53,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 161 transitions, 1596 flow [2024-06-27 18:20:53,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 161 transitions, 1467 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:53,070 INFO L231 Difference]: Finished difference. Result has 121 places, 143 transitions, 1203 flow [2024-06-27 18:20:53,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1203, PETRI_PLACES=121, PETRI_TRANSITIONS=143} [2024-06-27 18:20:53,071 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-06-27 18:20:53,071 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 143 transitions, 1203 flow [2024-06-27 18:20:53,071 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 18:20:53,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:53,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:53,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:20:53,072 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 18:20:53,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 933742921, now seen corresponding path program 1 times [2024-06-27 18:20:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955697385] [2024-06-27 18:20:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955697385] [2024-06-27 18:20:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955697385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:53,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:53,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:53,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173977690] [2024-06-27 18:20:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:53,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:53,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:53,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 143 transitions, 1203 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 18:20:53,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:53,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:53,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:54,443 INFO L124 PetriNetUnfolderBase]: 3518/5893 cut-off events. [2024-06-27 18:20:54,443 INFO L125 PetriNetUnfolderBase]: For 56621/56621 co-relation queries the response was YES. [2024-06-27 18:20:54,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26002 conditions, 5893 events. 3518/5893 cut-off events. For 56621/56621 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 38386 event pairs, 1192 based on Foata normal form. 2/5771 useless extension candidates. Maximal degree in co-relation 25952. Up to 5103 conditions per place. [2024-06-27 18:20:54,489 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 146 selfloop transitions, 13 changer transitions 0/170 dead transitions. [2024-06-27 18:20:54,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 170 transitions, 1645 flow [2024-06-27 18:20:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:20:54,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 18:20:54,491 INFO L175 Difference]: Start difference. First operand has 121 places, 143 transitions, 1203 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:20:54,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 170 transitions, 1645 flow [2024-06-27 18:20:54,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 170 transitions, 1569 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:54,562 INFO L231 Difference]: Finished difference. Result has 124 places, 150 transitions, 1236 flow [2024-06-27 18:20:54,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1236, PETRI_PLACES=124, PETRI_TRANSITIONS=150} [2024-06-27 18:20:54,562 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 71 predicate places. [2024-06-27 18:20:54,563 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 150 transitions, 1236 flow [2024-06-27 18:20:54,563 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 18:20:54,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:54,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:54,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:20:54,563 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:54,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:54,564 INFO L85 PathProgramCache]: Analyzing trace with hash 939486601, now seen corresponding path program 2 times [2024-06-27 18:20:54,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:54,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554108833] [2024-06-27 18:20:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:54,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:55,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:55,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554108833] [2024-06-27 18:20:55,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554108833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:55,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:55,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:55,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989327547] [2024-06-27 18:20:55,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:55,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:55,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:55,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:55,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:55,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:55,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 150 transitions, 1236 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 18:20:55,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:55,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:55,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:55,888 INFO L124 PetriNetUnfolderBase]: 3537/6227 cut-off events. [2024-06-27 18:20:55,888 INFO L125 PetriNetUnfolderBase]: For 61600/61606 co-relation queries the response was YES. [2024-06-27 18:20:55,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27176 conditions, 6227 events. 3537/6227 cut-off events. For 61600/61606 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42651 event pairs, 1187 based on Foata normal form. 6/6026 useless extension candidates. Maximal degree in co-relation 27124. Up to 5098 conditions per place. [2024-06-27 18:20:55,946 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 144 selfloop transitions, 18 changer transitions 0/173 dead transitions. [2024-06-27 18:20:55,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 173 transitions, 1672 flow [2024-06-27 18:20:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 18:20:55,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 18:20:55,948 INFO L175 Difference]: Start difference. First operand has 124 places, 150 transitions, 1236 flow. Second operand 6 states and 147 transitions. [2024-06-27 18:20:55,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 173 transitions, 1672 flow [2024-06-27 18:20:56,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 173 transitions, 1627 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:56,025 INFO L231 Difference]: Finished difference. Result has 127 places, 153 transitions, 1275 flow [2024-06-27 18:20:56,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1275, PETRI_PLACES=127, PETRI_TRANSITIONS=153} [2024-06-27 18:20:56,026 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 74 predicate places. [2024-06-27 18:20:56,026 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 153 transitions, 1275 flow [2024-06-27 18:20:56,026 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 18:20:56,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:56,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:56,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:20:56,027 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 18:20:56,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:56,027 INFO L85 PathProgramCache]: Analyzing trace with hash -952981058, now seen corresponding path program 1 times [2024-06-27 18:20:56,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:56,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917316618] [2024-06-27 18:20:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:56,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:56,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:56,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917316618] [2024-06-27 18:20:56,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917316618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:56,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:56,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:56,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850452175] [2024-06-27 18:20:56,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:56,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:56,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:57,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:57,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 153 transitions, 1275 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:57,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:57,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:57,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:58,186 INFO L124 PetriNetUnfolderBase]: 4248/6971 cut-off events. [2024-06-27 18:20:58,186 INFO L125 PetriNetUnfolderBase]: For 84752/84758 co-relation queries the response was YES. [2024-06-27 18:20:58,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32825 conditions, 6971 events. 4248/6971 cut-off events. For 84752/84758 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 45541 event pairs, 1287 based on Foata normal form. 13/6836 useless extension candidates. Maximal degree in co-relation 32772. Up to 5301 conditions per place. [2024-06-27 18:20:58,239 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 141 selfloop transitions, 72 changer transitions 0/223 dead transitions. [2024-06-27 18:20:58,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 223 transitions, 2050 flow [2024-06-27 18:20:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:20:58,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-27 18:20:58,241 INFO L175 Difference]: Start difference. First operand has 127 places, 153 transitions, 1275 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:20:58,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 223 transitions, 2050 flow [2024-06-27 18:20:58,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 223 transitions, 1988 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:58,323 INFO L231 Difference]: Finished difference. Result has 134 places, 163 transitions, 1516 flow [2024-06-27 18:20:58,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1516, PETRI_PLACES=134, PETRI_TRANSITIONS=163} [2024-06-27 18:20:58,324 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2024-06-27 18:20:58,324 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 163 transitions, 1516 flow [2024-06-27 18:20:58,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:58,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:58,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:58,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:20:58,325 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 18:20:58,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1296055386, now seen corresponding path program 1 times [2024-06-27 18:20:58,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:58,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881700282] [2024-06-27 18:20:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:58,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:59,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:59,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881700282] [2024-06-27 18:20:59,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881700282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:59,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:59,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:59,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891955999] [2024-06-27 18:20:59,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:59,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:59,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:59,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:59,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:59,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:59,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 163 transitions, 1516 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 18:20:59,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:59,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:59,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:00,120 INFO L124 PetriNetUnfolderBase]: 3988/6674 cut-off events. [2024-06-27 18:21:00,121 INFO L125 PetriNetUnfolderBase]: For 91032/91070 co-relation queries the response was YES. [2024-06-27 18:21:00,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32520 conditions, 6674 events. 3988/6674 cut-off events. For 91032/91070 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 44859 event pairs, 1360 based on Foata normal form. 25/6519 useless extension candidates. Maximal degree in co-relation 32464. Up to 5709 conditions per place. [2024-06-27 18:21:00,171 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 143 selfloop transitions, 26 changer transitions 0/192 dead transitions. [2024-06-27 18:21:00,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 192 transitions, 1968 flow [2024-06-27 18:21:00,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:21:00,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-27 18:21:00,173 INFO L175 Difference]: Start difference. First operand has 134 places, 163 transitions, 1516 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:21:00,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 192 transitions, 1968 flow [2024-06-27 18:21:00,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 192 transitions, 1839 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:00,271 INFO L231 Difference]: Finished difference. Result has 137 places, 166 transitions, 1481 flow [2024-06-27 18:21:00,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1481, PETRI_PLACES=137, PETRI_TRANSITIONS=166} [2024-06-27 18:21:00,272 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-27 18:21:00,272 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 166 transitions, 1481 flow [2024-06-27 18:21:00,272 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 18:21:00,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:00,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:00,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:21:00,273 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:00,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:00,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1752291774, now seen corresponding path program 2 times [2024-06-27 18:21:00,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:00,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78317704] [2024-06-27 18:21:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:00,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:01,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:01,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78317704] [2024-06-27 18:21:01,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78317704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:01,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:01,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:21:01,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820889302] [2024-06-27 18:21:01,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:01,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:21:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:01,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:21:01,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:21:01,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:01,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 166 transitions, 1481 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:01,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:01,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:01,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:02,551 INFO L124 PetriNetUnfolderBase]: 4528/7458 cut-off events. [2024-06-27 18:21:02,551 INFO L125 PetriNetUnfolderBase]: For 99449/99449 co-relation queries the response was YES. [2024-06-27 18:21:02,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36218 conditions, 7458 events. 4528/7458 cut-off events. For 99449/99449 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 49569 event pairs, 1396 based on Foata normal form. 12/7309 useless extension candidates. Maximal degree in co-relation 36161. Up to 5910 conditions per place. [2024-06-27 18:21:02,611 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 144 selfloop transitions, 74 changer transitions 0/228 dead transitions. [2024-06-27 18:21:02,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 228 transitions, 2208 flow [2024-06-27 18:21:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:21:02,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-27 18:21:02,613 INFO L175 Difference]: Start difference. First operand has 137 places, 166 transitions, 1481 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:21:02,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 228 transitions, 2208 flow [2024-06-27 18:21:02,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 228 transitions, 2136 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:02,721 INFO L231 Difference]: Finished difference. Result has 143 places, 172 transitions, 1661 flow [2024-06-27 18:21:02,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1661, PETRI_PLACES=143, PETRI_TRANSITIONS=172} [2024-06-27 18:21:02,722 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-06-27 18:21:02,722 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 172 transitions, 1661 flow [2024-06-27 18:21:02,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:02,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:02,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:02,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:21:02,723 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:02,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash 227292832, now seen corresponding path program 3 times [2024-06-27 18:21:02,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:02,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53088849] [2024-06-27 18:21:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:03,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:03,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53088849] [2024-06-27 18:21:03,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53088849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:03,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:03,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:21:03,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284147778] [2024-06-27 18:21:03,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:03,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:21:03,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:03,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:21:03,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:21:03,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:03,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 172 transitions, 1661 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:03,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:03,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:03,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:05,299 INFO L124 PetriNetUnfolderBase]: 4714/7814 cut-off events. [2024-06-27 18:21:05,299 INFO L125 PetriNetUnfolderBase]: For 113685/113685 co-relation queries the response was YES. [2024-06-27 18:21:05,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39033 conditions, 7814 events. 4714/7814 cut-off events. For 113685/113685 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 52853 event pairs, 1456 based on Foata normal form. 12/7653 useless extension candidates. Maximal degree in co-relation 38973. Up to 6204 conditions per place. [2024-06-27 18:21:05,371 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 144 selfloop transitions, 78 changer transitions 0/232 dead transitions. [2024-06-27 18:21:05,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 232 transitions, 2391 flow [2024-06-27 18:21:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:21:05,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-06-27 18:21:05,373 INFO L175 Difference]: Start difference. First operand has 143 places, 172 transitions, 1661 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:21:05,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 232 transitions, 2391 flow [2024-06-27 18:21:05,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 232 transitions, 2235 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:05,523 INFO L231 Difference]: Finished difference. Result has 149 places, 176 transitions, 1747 flow [2024-06-27 18:21:05,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1747, PETRI_PLACES=149, PETRI_TRANSITIONS=176} [2024-06-27 18:21:05,524 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 96 predicate places. [2024-06-27 18:21:05,524 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 176 transitions, 1747 flow [2024-06-27 18:21:05,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:05,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:05,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:05,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:21:05,524 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:05,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash 492990112, now seen corresponding path program 4 times [2024-06-27 18:21:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:05,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443971825] [2024-06-27 18:21:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:05,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:06,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:06,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443971825] [2024-06-27 18:21:06,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443971825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:06,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:06,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:21:06,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099852223] [2024-06-27 18:21:06,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:06,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:21:06,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:06,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:21:06,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:21:06,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:06,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 176 transitions, 1747 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:06,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:06,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:06,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:07,720 INFO L124 PetriNetUnfolderBase]: 4694/7632 cut-off events. [2024-06-27 18:21:07,720 INFO L125 PetriNetUnfolderBase]: For 110760/110760 co-relation queries the response was YES. [2024-06-27 18:21:07,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38096 conditions, 7632 events. 4694/7632 cut-off events. For 110760/110760 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 50219 event pairs, 1217 based on Foata normal form. 12/7511 useless extension candidates. Maximal degree in co-relation 38034. Up to 5106 conditions per place. [2024-06-27 18:21:07,785 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 134 selfloop transitions, 88 changer transitions 0/232 dead transitions. [2024-06-27 18:21:07,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 232 transitions, 2365 flow [2024-06-27 18:21:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:21:07,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 18:21:07,787 INFO L175 Difference]: Start difference. First operand has 149 places, 176 transitions, 1747 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:21:07,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 232 transitions, 2365 flow [2024-06-27 18:21:07,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 232 transitions, 2223 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:07,955 INFO L231 Difference]: Finished difference. Result has 153 places, 175 transitions, 1741 flow [2024-06-27 18:21:07,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1741, PETRI_PLACES=153, PETRI_TRANSITIONS=175} [2024-06-27 18:21:07,955 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-27 18:21:07,955 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 175 transitions, 1741 flow [2024-06-27 18:21:07,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:07,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:07,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:07,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:21:07,956 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 18:21:07,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1285849566, now seen corresponding path program 2 times [2024-06-27 18:21:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:07,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586700233] [2024-06-27 18:21:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:07,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:08,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:08,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586700233] [2024-06-27 18:21:08,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586700233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:08,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:08,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:08,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119945346] [2024-06-27 18:21:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:08,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:08,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:08,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:08,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 175 transitions, 1741 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 18:21:08,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:08,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:08,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:09,889 INFO L124 PetriNetUnfolderBase]: 4364/7682 cut-off events. [2024-06-27 18:21:09,889 INFO L125 PetriNetUnfolderBase]: For 108474/108511 co-relation queries the response was YES. [2024-06-27 18:21:09,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36583 conditions, 7682 events. 4364/7682 cut-off events. For 108474/108511 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 55305 event pairs, 1462 based on Foata normal form. 29/7393 useless extension candidates. Maximal degree in co-relation 36520. Up to 6293 conditions per place. [2024-06-27 18:21:09,965 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 147 selfloop transitions, 31 changer transitions 0/201 dead transitions. [2024-06-27 18:21:09,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 201 transitions, 2211 flow [2024-06-27 18:21:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:21:09,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-27 18:21:09,966 INFO L175 Difference]: Start difference. First operand has 153 places, 175 transitions, 1741 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:21:09,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 201 transitions, 2211 flow [2024-06-27 18:21:10,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 201 transitions, 1980 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:10,083 INFO L231 Difference]: Finished difference. Result has 152 places, 178 transitions, 1620 flow [2024-06-27 18:21:10,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1620, PETRI_PLACES=152, PETRI_TRANSITIONS=178} [2024-06-27 18:21:10,084 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-06-27 18:21:10,084 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 178 transitions, 1620 flow [2024-06-27 18:21:10,085 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 18:21:10,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:10,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:10,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:21:10,085 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 18:21:10,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:10,086 INFO L85 PathProgramCache]: Analyzing trace with hash -940424316, now seen corresponding path program 3 times [2024-06-27 18:21:10,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640775891] [2024-06-27 18:21:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:10,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:10,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:10,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640775891] [2024-06-27 18:21:10,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640775891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:10,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:10,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164940653] [2024-06-27 18:21:10,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:10,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:10,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:10,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:10,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:10,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:10,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 178 transitions, 1620 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 18:21:10,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:10,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:10,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:11,917 INFO L124 PetriNetUnfolderBase]: 4363/7690 cut-off events. [2024-06-27 18:21:11,917 INFO L125 PetriNetUnfolderBase]: For 105644/105681 co-relation queries the response was YES. [2024-06-27 18:21:11,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35939 conditions, 7690 events. 4363/7690 cut-off events. For 105644/105681 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 55434 event pairs, 1460 based on Foata normal form. 34/7417 useless extension candidates. Maximal degree in co-relation 35876. Up to 6249 conditions per place. [2024-06-27 18:21:11,982 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 145 selfloop transitions, 39 changer transitions 0/207 dead transitions. [2024-06-27 18:21:11,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 207 transitions, 2122 flow [2024-06-27 18:21:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:21:11,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:21:11,983 INFO L175 Difference]: Start difference. First operand has 152 places, 178 transitions, 1620 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:21:11,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 207 transitions, 2122 flow [2024-06-27 18:21:12,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 207 transitions, 2034 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:12,082 INFO L231 Difference]: Finished difference. Result has 155 places, 184 transitions, 1694 flow [2024-06-27 18:21:12,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1694, PETRI_PLACES=155, PETRI_TRANSITIONS=184} [2024-06-27 18:21:12,083 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-06-27 18:21:12,083 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 184 transitions, 1694 flow [2024-06-27 18:21:12,083 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 18:21:12,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:12,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:12,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:21:12,084 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 18:21:12,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2120194209, now seen corresponding path program 1 times [2024-06-27 18:21:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441926957] [2024-06-27 18:21:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:12,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:12,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441926957] [2024-06-27 18:21:12,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441926957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:12,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:12,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157885566] [2024-06-27 18:21:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:12,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:13,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:13,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 184 transitions, 1694 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 18:21:13,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:13,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:13,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:14,149 INFO L124 PetriNetUnfolderBase]: 4472/7617 cut-off events. [2024-06-27 18:21:14,149 INFO L125 PetriNetUnfolderBase]: For 115418/115434 co-relation queries the response was YES. [2024-06-27 18:21:14,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37661 conditions, 7617 events. 4472/7617 cut-off events. For 115418/115434 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 53166 event pairs, 1437 based on Foata normal form. 1/7435 useless extension candidates. Maximal degree in co-relation 37596. Up to 6492 conditions per place. [2024-06-27 18:21:14,216 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 183 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2024-06-27 18:21:14,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 217 transitions, 2263 flow [2024-06-27 18:21:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:21:14,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-06-27 18:21:14,222 INFO L175 Difference]: Start difference. First operand has 155 places, 184 transitions, 1694 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:21:14,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 217 transitions, 2263 flow [2024-06-27 18:21:14,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 217 transitions, 2193 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:14,348 INFO L231 Difference]: Finished difference. Result has 161 places, 192 transitions, 1774 flow [2024-06-27 18:21:14,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1774, PETRI_PLACES=161, PETRI_TRANSITIONS=192} [2024-06-27 18:21:14,349 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2024-06-27 18:21:14,349 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 192 transitions, 1774 flow [2024-06-27 18:21:14,349 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 18:21:14,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:14,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:14,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:21:14,350 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 18:21:14,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1118739354, now seen corresponding path program 1 times [2024-06-27 18:21:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:14,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029378781] [2024-06-27 18:21:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:14,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029378781] [2024-06-27 18:21:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029378781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:15,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:15,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:15,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270476181] [2024-06-27 18:21:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:15,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:15,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:15,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 192 transitions, 1774 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 18:21:15,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:15,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:15,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:16,413 INFO L124 PetriNetUnfolderBase]: 4522/7701 cut-off events. [2024-06-27 18:21:16,413 INFO L125 PetriNetUnfolderBase]: For 125894/125910 co-relation queries the response was YES. [2024-06-27 18:21:16,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39075 conditions, 7701 events. 4522/7701 cut-off events. For 125894/125910 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 53772 event pairs, 1432 based on Foata normal form. 6/7521 useless extension candidates. Maximal degree in co-relation 39007. Up to 6516 conditions per place. [2024-06-27 18:21:16,478 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 189 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2024-06-27 18:21:16,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 222 transitions, 2326 flow [2024-06-27 18:21:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:21:16,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 18:21:16,480 INFO L175 Difference]: Start difference. First operand has 161 places, 192 transitions, 1774 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:21:16,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 222 transitions, 2326 flow [2024-06-27 18:21:16,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 222 transitions, 2255 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:16,620 INFO L231 Difference]: Finished difference. Result has 164 places, 196 transitions, 1800 flow [2024-06-27 18:21:16,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1800, PETRI_PLACES=164, PETRI_TRANSITIONS=196} [2024-06-27 18:21:16,621 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 111 predicate places. [2024-06-27 18:21:16,621 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 196 transitions, 1800 flow [2024-06-27 18:21:16,621 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 18:21:16,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:16,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:16,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:21:16,621 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 18:21:16,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:16,622 INFO L85 PathProgramCache]: Analyzing trace with hash -940685274, now seen corresponding path program 2 times [2024-06-27 18:21:16,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:16,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631588738] [2024-06-27 18:21:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:16,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:17,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631588738] [2024-06-27 18:21:17,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631588738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:17,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:17,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:17,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170449295] [2024-06-27 18:21:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:17,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:17,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:17,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:17,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:17,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 196 transitions, 1800 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 18:21:17,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:17,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:17,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:18,597 INFO L124 PetriNetUnfolderBase]: 4641/8134 cut-off events. [2024-06-27 18:21:18,598 INFO L125 PetriNetUnfolderBase]: For 136591/136616 co-relation queries the response was YES. [2024-06-27 18:21:18,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41248 conditions, 8134 events. 4641/8134 cut-off events. For 136591/136616 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 58370 event pairs, 1443 based on Foata normal form. 12/7890 useless extension candidates. Maximal degree in co-relation 41179. Up to 6645 conditions per place. [2024-06-27 18:21:18,667 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 188 selfloop transitions, 23 changer transitions 0/226 dead transitions. [2024-06-27 18:21:18,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 226 transitions, 2382 flow [2024-06-27 18:21:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:21:18,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-27 18:21:18,670 INFO L175 Difference]: Start difference. First operand has 164 places, 196 transitions, 1800 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:21:18,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 226 transitions, 2382 flow [2024-06-27 18:21:18,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 226 transitions, 2313 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:18,826 INFO L231 Difference]: Finished difference. Result has 166 places, 200 transitions, 1846 flow [2024-06-27 18:21:18,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1846, PETRI_PLACES=166, PETRI_TRANSITIONS=200} [2024-06-27 18:21:18,827 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 113 predicate places. [2024-06-27 18:21:18,827 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 200 transitions, 1846 flow [2024-06-27 18:21:18,828 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 18:21:18,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:18,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:18,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:21:18,828 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 18:21:18,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:18,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1634421288, now seen corresponding path program 3 times [2024-06-27 18:21:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:18,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770609329] [2024-06-27 18:21:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:18,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:19,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:19,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770609329] [2024-06-27 18:21:19,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770609329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:19,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:19,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:19,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516635595] [2024-06-27 18:21:19,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:19,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:19,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:19,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:19,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 200 transitions, 1846 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 18:21:19,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:19,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:19,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:20,886 INFO L124 PetriNetUnfolderBase]: 4668/8214 cut-off events. [2024-06-27 18:21:20,887 INFO L125 PetriNetUnfolderBase]: For 141895/141928 co-relation queries the response was YES. [2024-06-27 18:21:20,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42280 conditions, 8214 events. 4668/8214 cut-off events. For 141895/141928 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 59272 event pairs, 1440 based on Foata normal form. 9/7953 useless extension candidates. Maximal degree in co-relation 42210. Up to 6579 conditions per place. [2024-06-27 18:21:20,964 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 180 selfloop transitions, 34 changer transitions 0/229 dead transitions. [2024-06-27 18:21:20,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 229 transitions, 2416 flow [2024-06-27 18:21:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:21:20,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-27 18:21:20,966 INFO L175 Difference]: Start difference. First operand has 166 places, 200 transitions, 1846 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:21:20,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 229 transitions, 2416 flow [2024-06-27 18:21:21,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 229 transitions, 2329 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:21,129 INFO L231 Difference]: Finished difference. Result has 168 places, 203 transitions, 1882 flow [2024-06-27 18:21:21,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1882, PETRI_PLACES=168, PETRI_TRANSITIONS=203} [2024-06-27 18:21:21,129 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 115 predicate places. [2024-06-27 18:21:21,129 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 203 transitions, 1882 flow [2024-06-27 18:21:21,130 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 18:21:21,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:21,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:21:21,130 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 18:21:21,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1528762712, now seen corresponding path program 1 times [2024-06-27 18:21:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:21,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344647535] [2024-06-27 18:21:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:21,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344647535] [2024-06-27 18:21:21,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344647535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:21,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:21,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:21,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946328971] [2024-06-27 18:21:21,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:21,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:21,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:21,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 203 transitions, 1882 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 18:21:21,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:21,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:21,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:23,038 INFO L124 PetriNetUnfolderBase]: 4978/8317 cut-off events. [2024-06-27 18:21:23,039 INFO L125 PetriNetUnfolderBase]: For 148162/148175 co-relation queries the response was YES. [2024-06-27 18:21:23,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44433 conditions, 8317 events. 4978/8317 cut-off events. For 148162/148175 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 57250 event pairs, 1573 based on Foata normal form. 12/8128 useless extension candidates. Maximal degree in co-relation 44362. Up to 7194 conditions per place. [2024-06-27 18:21:23,131 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 208 selfloop transitions, 29 changer transitions 0/247 dead transitions. [2024-06-27 18:21:23,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 247 transitions, 2616 flow [2024-06-27 18:21:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:23,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:21:23,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:21:23,133 INFO L175 Difference]: Start difference. First operand has 168 places, 203 transitions, 1882 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:21:23,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 247 transitions, 2616 flow [2024-06-27 18:21:23,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 247 transitions, 2517 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:23,333 INFO L231 Difference]: Finished difference. Result has 172 places, 217 transitions, 2044 flow [2024-06-27 18:21:23,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2044, PETRI_PLACES=172, PETRI_TRANSITIONS=217} [2024-06-27 18:21:23,334 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-06-27 18:21:23,334 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 217 transitions, 2044 flow [2024-06-27 18:21:23,334 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 18:21:23,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:23,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:23,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:21:23,335 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 18:21:23,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash -468068344, now seen corresponding path program 2 times [2024-06-27 18:21:23,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:23,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763628345] [2024-06-27 18:21:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:23,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:23,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:23,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763628345] [2024-06-27 18:21:23,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763628345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:23,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:23,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:23,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101092102] [2024-06-27 18:21:23,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:23,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:23,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:23,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:24,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:24,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 217 transitions, 2044 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 18:21:24,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:24,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:24,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:25,201 INFO L124 PetriNetUnfolderBase]: 5052/8435 cut-off events. [2024-06-27 18:21:25,201 INFO L125 PetriNetUnfolderBase]: For 162257/162270 co-relation queries the response was YES. [2024-06-27 18:21:25,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46381 conditions, 8435 events. 5052/8435 cut-off events. For 162257/162270 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 58271 event pairs, 1574 based on Foata normal form. 12/8244 useless extension candidates. Maximal degree in co-relation 46307. Up to 7236 conditions per place. [2024-06-27 18:21:25,296 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 211 selfloop transitions, 35 changer transitions 0/256 dead transitions. [2024-06-27 18:21:25,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 256 transitions, 2863 flow [2024-06-27 18:21:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:25,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:21:25,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 18:21:25,297 INFO L175 Difference]: Start difference. First operand has 172 places, 217 transitions, 2044 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:21:25,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 256 transitions, 2863 flow [2024-06-27 18:21:25,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 256 transitions, 2780 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:25,484 INFO L231 Difference]: Finished difference. Result has 177 places, 225 transitions, 2176 flow [2024-06-27 18:21:25,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2176, PETRI_PLACES=177, PETRI_TRANSITIONS=225} [2024-06-27 18:21:25,484 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2024-06-27 18:21:25,484 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 225 transitions, 2176 flow [2024-06-27 18:21:25,485 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 18:21:25,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:25,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:25,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:21:25,485 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 18:21:25,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1523010104, now seen corresponding path program 1 times [2024-06-27 18:21:25,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:25,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331069352] [2024-06-27 18:21:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:25,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331069352] [2024-06-27 18:21:26,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331069352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:26,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:26,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707072427] [2024-06-27 18:21:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:26,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:26,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:26,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:26,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:26,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 225 transitions, 2176 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 18:21:26,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:26,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:26,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:27,622 INFO L124 PetriNetUnfolderBase]: 4734/7991 cut-off events. [2024-06-27 18:21:27,622 INFO L125 PetriNetUnfolderBase]: For 170271/170316 co-relation queries the response was YES. [2024-06-27 18:21:27,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45035 conditions, 7991 events. 4734/7991 cut-off events. For 170271/170316 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 55916 event pairs, 1493 based on Foata normal form. 19/7775 useless extension candidates. Maximal degree in co-relation 44959. Up to 6713 conditions per place. [2024-06-27 18:21:27,697 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 197 selfloop transitions, 33 changer transitions 0/260 dead transitions. [2024-06-27 18:21:27,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 260 transitions, 2808 flow [2024-06-27 18:21:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:21:27,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:21:27,699 INFO L175 Difference]: Start difference. First operand has 177 places, 225 transitions, 2176 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:21:27,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 260 transitions, 2808 flow [2024-06-27 18:21:27,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 260 transitions, 2732 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:27,919 INFO L231 Difference]: Finished difference. Result has 182 places, 228 transitions, 2228 flow [2024-06-27 18:21:27,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2228, PETRI_PLACES=182, PETRI_TRANSITIONS=228} [2024-06-27 18:21:27,920 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 129 predicate places. [2024-06-27 18:21:27,920 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 228 transitions, 2228 flow [2024-06-27 18:21:27,920 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 18:21:27,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:27,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:27,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:21:27,921 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 18:21:27,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1309227694, now seen corresponding path program 3 times [2024-06-27 18:21:27,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:27,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379909605] [2024-06-27 18:21:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:28,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:28,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379909605] [2024-06-27 18:21:28,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379909605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:28,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:28,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:28,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23137697] [2024-06-27 18:21:28,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:28,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:28,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:28,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:28,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 228 transitions, 2228 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 18:21:28,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:28,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:28,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:29,761 INFO L124 PetriNetUnfolderBase]: 5114/8524 cut-off events. [2024-06-27 18:21:29,761 INFO L125 PetriNetUnfolderBase]: For 181050/181059 co-relation queries the response was YES. [2024-06-27 18:21:29,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48667 conditions, 8524 events. 5114/8524 cut-off events. For 181050/181059 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 58806 event pairs, 1593 based on Foata normal form. 8/8325 useless extension candidates. Maximal degree in co-relation 48589. Up to 7378 conditions per place. [2024-06-27 18:21:29,849 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 219 selfloop transitions, 28 changer transitions 0/257 dead transitions. [2024-06-27 18:21:29,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 257 transitions, 2847 flow [2024-06-27 18:21:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:29,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:21:29,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-27 18:21:29,851 INFO L175 Difference]: Start difference. First operand has 182 places, 228 transitions, 2228 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:21:29,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 257 transitions, 2847 flow [2024-06-27 18:21:30,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 257 transitions, 2705 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:30,081 INFO L231 Difference]: Finished difference. Result has 183 places, 229 transitions, 2165 flow [2024-06-27 18:21:30,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2165, PETRI_PLACES=183, PETRI_TRANSITIONS=229} [2024-06-27 18:21:30,082 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-06-27 18:21:30,082 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 229 transitions, 2165 flow [2024-06-27 18:21:30,082 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 18:21:30,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:30,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:30,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:21:30,082 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 18:21:30,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1330926012, now seen corresponding path program 4 times [2024-06-27 18:21:30,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:30,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744965149] [2024-06-27 18:21:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:30,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:30,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744965149] [2024-06-27 18:21:30,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744965149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:30,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:30,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:30,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223493682] [2024-06-27 18:21:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:30,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:30,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 229 transitions, 2165 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 18:21:30,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:30,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:30,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:31,944 INFO L124 PetriNetUnfolderBase]: 5148/8570 cut-off events. [2024-06-27 18:21:31,945 INFO L125 PetriNetUnfolderBase]: For 184633/184642 co-relation queries the response was YES. [2024-06-27 18:21:31,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48620 conditions, 8570 events. 5148/8570 cut-off events. For 184633/184642 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 58930 event pairs, 1587 based on Foata normal form. 8/8371 useless extension candidates. Maximal degree in co-relation 48541. Up to 7356 conditions per place. [2024-06-27 18:21:32,033 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 214 selfloop transitions, 36 changer transitions 0/260 dead transitions. [2024-06-27 18:21:32,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 260 transitions, 2853 flow [2024-06-27 18:21:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:21:32,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-27 18:21:32,035 INFO L175 Difference]: Start difference. First operand has 183 places, 229 transitions, 2165 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:21:32,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 260 transitions, 2853 flow [2024-06-27 18:21:32,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 260 transitions, 2808 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:32,240 INFO L231 Difference]: Finished difference. Result has 187 places, 232 transitions, 2262 flow [2024-06-27 18:21:32,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2262, PETRI_PLACES=187, PETRI_TRANSITIONS=232} [2024-06-27 18:21:32,242 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 134 predicate places. [2024-06-27 18:21:32,243 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 232 transitions, 2262 flow [2024-06-27 18:21:32,243 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 18:21:32,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:32,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:21:32,243 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 18:21:32,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash -880835516, now seen corresponding path program 5 times [2024-06-27 18:21:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82548829] [2024-06-27 18:21:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:32,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:32,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82548829] [2024-06-27 18:21:32,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82548829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:32,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:32,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:32,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936510638] [2024-06-27 18:21:32,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:32,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:32,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:32,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 232 transitions, 2262 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 18:21:32,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:32,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:32,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:34,256 INFO L124 PetriNetUnfolderBase]: 5207/8941 cut-off events. [2024-06-27 18:21:34,257 INFO L125 PetriNetUnfolderBase]: For 201466/201484 co-relation queries the response was YES. [2024-06-27 18:21:34,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50648 conditions, 8941 events. 5207/8941 cut-off events. For 201466/201484 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 63503 event pairs, 1552 based on Foata normal form. 14/8667 useless extension candidates. Maximal degree in co-relation 50567. Up to 7306 conditions per place. [2024-06-27 18:21:34,347 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 208 selfloop transitions, 52 changer transitions 0/270 dead transitions. [2024-06-27 18:21:34,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 270 transitions, 3173 flow [2024-06-27 18:21:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:21:34,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:21:34,349 INFO L175 Difference]: Start difference. First operand has 187 places, 232 transitions, 2262 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:21:34,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 270 transitions, 3173 flow [2024-06-27 18:21:34,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 270 transitions, 3057 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:34,604 INFO L231 Difference]: Finished difference. Result has 190 places, 241 transitions, 2450 flow [2024-06-27 18:21:34,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2450, PETRI_PLACES=190, PETRI_TRANSITIONS=241} [2024-06-27 18:21:34,605 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 137 predicate places. [2024-06-27 18:21:34,605 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 241 transitions, 2450 flow [2024-06-27 18:21:34,606 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 18:21:34,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:34,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:34,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:21:34,606 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 18:21:34,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1871815568, now seen corresponding path program 6 times [2024-06-27 18:21:34,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:34,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104392337] [2024-06-27 18:21:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:34,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:35,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104392337] [2024-06-27 18:21:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104392337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:35,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:35,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317760766] [2024-06-27 18:21:35,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:35,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:35,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:35,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:35,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:35,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:35,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 241 transitions, 2450 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 18:21:35,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:35,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:35,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:36,571 INFO L124 PetriNetUnfolderBase]: 5201/8933 cut-off events. [2024-06-27 18:21:36,571 INFO L125 PetriNetUnfolderBase]: For 211476/211494 co-relation queries the response was YES. [2024-06-27 18:21:36,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51468 conditions, 8933 events. 5201/8933 cut-off events. For 211476/211494 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 63507 event pairs, 1547 based on Foata normal form. 14/8659 useless extension candidates. Maximal degree in co-relation 51385. Up to 7301 conditions per place. [2024-06-27 18:21:36,922 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 207 selfloop transitions, 52 changer transitions 0/269 dead transitions. [2024-06-27 18:21:36,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 269 transitions, 3118 flow [2024-06-27 18:21:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:21:36,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-27 18:21:36,924 INFO L175 Difference]: Start difference. First operand has 190 places, 241 transitions, 2450 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:21:36,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 269 transitions, 3118 flow [2024-06-27 18:21:37,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 269 transitions, 2982 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-27 18:21:37,196 INFO L231 Difference]: Finished difference. Result has 195 places, 241 transitions, 2424 flow [2024-06-27 18:21:37,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2424, PETRI_PLACES=195, PETRI_TRANSITIONS=241} [2024-06-27 18:21:37,197 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 142 predicate places. [2024-06-27 18:21:37,197 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 241 transitions, 2424 flow [2024-06-27 18:21:37,202 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 18:21:37,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:37,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:37,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:21:37,203 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 18:21:37,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash 897808904, now seen corresponding path program 2 times [2024-06-27 18:21:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:37,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404306567] [2024-06-27 18:21:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:38,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:38,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404306567] [2024-06-27 18:21:38,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404306567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:38,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:38,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:38,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445265716] [2024-06-27 18:21:38,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:38,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:38,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:38,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:38,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 241 transitions, 2424 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 18:21:38,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:38,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:38,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:39,496 INFO L124 PetriNetUnfolderBase]: 4884/8546 cut-off events. [2024-06-27 18:21:39,497 INFO L125 PetriNetUnfolderBase]: For 204324/204336 co-relation queries the response was YES. [2024-06-27 18:21:39,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48453 conditions, 8546 events. 4884/8546 cut-off events. For 204324/204336 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 62129 event pairs, 1503 based on Foata normal form. 12/8226 useless extension candidates. Maximal degree in co-relation 48368. Up to 6888 conditions per place. [2024-06-27 18:21:39,590 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 199 selfloop transitions, 39 changer transitions 0/273 dead transitions. [2024-06-27 18:21:39,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 273 transitions, 3078 flow [2024-06-27 18:21:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:21:39,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:21:39,592 INFO L175 Difference]: Start difference. First operand has 195 places, 241 transitions, 2424 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:21:39,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 273 transitions, 3078 flow [2024-06-27 18:21:39,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 273 transitions, 2937 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:39,846 INFO L231 Difference]: Finished difference. Result has 197 places, 244 transitions, 2429 flow [2024-06-27 18:21:39,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2429, PETRI_PLACES=197, PETRI_TRANSITIONS=244} [2024-06-27 18:21:39,847 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-06-27 18:21:39,847 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 244 transitions, 2429 flow [2024-06-27 18:21:39,848 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 18:21:39,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:39,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:39,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:21:39,848 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 18:21:39,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash 912093704, now seen corresponding path program 3 times [2024-06-27 18:21:39,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524620899] [2024-06-27 18:21:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:39,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524620899] [2024-06-27 18:21:40,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524620899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:40,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:40,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370586296] [2024-06-27 18:21:40,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:40,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:40,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:40,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 244 transitions, 2429 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 18:21:40,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:40,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:40,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:42,608 INFO L124 PetriNetUnfolderBase]: 4879/8637 cut-off events. [2024-06-27 18:21:42,609 INFO L125 PetriNetUnfolderBase]: For 216321/216380 co-relation queries the response was YES. [2024-06-27 18:21:42,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49276 conditions, 8637 events. 4879/8637 cut-off events. For 216321/216380 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 63522 event pairs, 1506 based on Foata normal form. 20/8320 useless extension candidates. Maximal degree in co-relation 49191. Up to 6970 conditions per place. [2024-06-27 18:21:42,727 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 223 selfloop transitions, 19 changer transitions 0/277 dead transitions. [2024-06-27 18:21:42,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 277 transitions, 3099 flow [2024-06-27 18:21:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:21:42,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:21:42,728 INFO L175 Difference]: Start difference. First operand has 197 places, 244 transitions, 2429 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:21:42,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 277 transitions, 3099 flow [2024-06-27 18:21:43,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 277 transitions, 2975 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:43,070 INFO L231 Difference]: Finished difference. Result has 199 places, 247 transitions, 2417 flow [2024-06-27 18:21:43,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2417, PETRI_PLACES=199, PETRI_TRANSITIONS=247} [2024-06-27 18:21:43,070 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 146 predicate places. [2024-06-27 18:21:43,070 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 247 transitions, 2417 flow [2024-06-27 18:21:43,071 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 18:21:43,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:43,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:21:43,071 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 18:21:43,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash 911618474, now seen corresponding path program 4 times [2024-06-27 18:21:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417410517] [2024-06-27 18:21:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:43,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417410517] [2024-06-27 18:21:43,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417410517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:43,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:43,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:43,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779303303] [2024-06-27 18:21:43,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:43,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:44,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:44,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 247 transitions, 2417 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 18:21:44,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:44,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:44,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:45,280 INFO L124 PetriNetUnfolderBase]: 4883/8622 cut-off events. [2024-06-27 18:21:45,281 INFO L125 PetriNetUnfolderBase]: For 222112/222176 co-relation queries the response was YES. [2024-06-27 18:21:45,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49532 conditions, 8622 events. 4883/8622 cut-off events. For 222112/222176 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 63341 event pairs, 1486 based on Foata normal form. 27/8299 useless extension candidates. Maximal degree in co-relation 49446. Up to 6757 conditions per place. [2024-06-27 18:21:45,385 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 190 selfloop transitions, 56 changer transitions 0/281 dead transitions. [2024-06-27 18:21:45,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 281 transitions, 3103 flow [2024-06-27 18:21:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:45,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:21:45,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-27 18:21:45,386 INFO L175 Difference]: Start difference. First operand has 199 places, 247 transitions, 2417 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:21:45,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 281 transitions, 3103 flow [2024-06-27 18:21:45,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 281 transitions, 2979 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:45,965 INFO L231 Difference]: Finished difference. Result has 200 places, 250 transitions, 2485 flow [2024-06-27 18:21:45,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2485, PETRI_PLACES=200, PETRI_TRANSITIONS=250} [2024-06-27 18:21:45,966 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 147 predicate places. [2024-06-27 18:21:45,966 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 250 transitions, 2485 flow [2024-06-27 18:21:45,966 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 18:21:45,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:45,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:45,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:21:45,969 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 18:21:45,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash -324935066, now seen corresponding path program 1 times [2024-06-27 18:21:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887394757] [2024-06-27 18:21:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:45,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:46,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:46,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887394757] [2024-06-27 18:21:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887394757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:46,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:46,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373902500] [2024-06-27 18:21:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:46,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:46,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:46,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:46,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:47,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:47,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 250 transitions, 2485 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 18:21:47,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:47,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:47,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:48,376 INFO L124 PetriNetUnfolderBase]: 4999/8446 cut-off events. [2024-06-27 18:21:48,376 INFO L125 PetriNetUnfolderBase]: For 235080/235108 co-relation queries the response was YES. [2024-06-27 18:21:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51441 conditions, 8446 events. 4999/8446 cut-off events. For 235080/235108 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 59360 event pairs, 1502 based on Foata normal form. 29/8270 useless extension candidates. Maximal degree in co-relation 51355. Up to 7174 conditions per place. [2024-06-27 18:21:48,471 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 248 selfloop transitions, 21 changer transitions 0/284 dead transitions. [2024-06-27 18:21:48,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 284 transitions, 3201 flow [2024-06-27 18:21:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:21:48,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 18:21:48,473 INFO L175 Difference]: Start difference. First operand has 200 places, 250 transitions, 2485 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:21:48,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 284 transitions, 3201 flow [2024-06-27 18:21:48,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 284 transitions, 3031 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:48,826 INFO L231 Difference]: Finished difference. Result has 202 places, 253 transitions, 2437 flow [2024-06-27 18:21:48,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2437, PETRI_PLACES=202, PETRI_TRANSITIONS=253} [2024-06-27 18:21:48,827 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-06-27 18:21:48,827 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 253 transitions, 2437 flow [2024-06-27 18:21:48,827 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 18:21:48,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:48,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:48,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:21:48,828 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 18:21:48,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:48,828 INFO L85 PathProgramCache]: Analyzing trace with hash -321180656, now seen corresponding path program 2 times [2024-06-27 18:21:48,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:48,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916171058] [2024-06-27 18:21:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:48,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:49,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:49,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916171058] [2024-06-27 18:21:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916171058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:49,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953047023] [2024-06-27 18:21:49,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:49,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:49,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:49,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 253 transitions, 2437 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 18:21:49,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:49,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:49,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:51,262 INFO L124 PetriNetUnfolderBase]: 5053/8525 cut-off events. [2024-06-27 18:21:51,262 INFO L125 PetriNetUnfolderBase]: For 245624/245650 co-relation queries the response was YES. [2024-06-27 18:21:51,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52179 conditions, 8525 events. 5053/8525 cut-off events. For 245624/245650 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 59906 event pairs, 1484 based on Foata normal form. 24/8354 useless extension candidates. Maximal degree in co-relation 52092. Up to 7193 conditions per place. [2024-06-27 18:21:51,356 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 252 selfloop transitions, 25 changer transitions 0/292 dead transitions. [2024-06-27 18:21:51,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 292 transitions, 3365 flow [2024-06-27 18:21:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:21:51,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 18:21:51,358 INFO L175 Difference]: Start difference. First operand has 202 places, 253 transitions, 2437 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:21:51,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 292 transitions, 3365 flow [2024-06-27 18:21:51,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 292 transitions, 3265 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:51,757 INFO L231 Difference]: Finished difference. Result has 204 places, 260 transitions, 2552 flow [2024-06-27 18:21:51,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2552, PETRI_PLACES=204, PETRI_TRANSITIONS=260} [2024-06-27 18:21:51,758 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 151 predicate places. [2024-06-27 18:21:51,758 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 260 transitions, 2552 flow [2024-06-27 18:21:51,758 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 18:21:51,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:51,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:51,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:21:51,759 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 18:21:51,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:51,759 INFO L85 PathProgramCache]: Analyzing trace with hash -880820884, now seen corresponding path program 3 times [2024-06-27 18:21:51,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:51,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261609283] [2024-06-27 18:21:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:51,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:52,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:52,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261609283] [2024-06-27 18:21:52,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261609283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:52,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:52,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:52,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545881000] [2024-06-27 18:21:52,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:52,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:52,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:52,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:53,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:53,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 260 transitions, 2552 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 18:21:53,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:53,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:53,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:54,453 INFO L124 PetriNetUnfolderBase]: 5164/8850 cut-off events. [2024-06-27 18:21:54,453 INFO L125 PetriNetUnfolderBase]: For 264198/264254 co-relation queries the response was YES. [2024-06-27 18:21:54,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54411 conditions, 8850 events. 5164/8850 cut-off events. For 264198/264254 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 63496 event pairs, 1470 based on Foata normal form. 26/8623 useless extension candidates. Maximal degree in co-relation 54323. Up to 7321 conditions per place. [2024-06-27 18:21:54,561 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 254 selfloop transitions, 30 changer transitions 0/299 dead transitions. [2024-06-27 18:21:54,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 299 transitions, 3532 flow [2024-06-27 18:21:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:54,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:21:54,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-27 18:21:54,563 INFO L175 Difference]: Start difference. First operand has 204 places, 260 transitions, 2552 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:21:54,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 299 transitions, 3532 flow [2024-06-27 18:21:54,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 299 transitions, 3441 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:54,999 INFO L231 Difference]: Finished difference. Result has 208 places, 267 transitions, 2700 flow [2024-06-27 18:21:55,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2700, PETRI_PLACES=208, PETRI_TRANSITIONS=267} [2024-06-27 18:21:55,000 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-06-27 18:21:55,000 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 267 transitions, 2700 flow [2024-06-27 18:21:55,000 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 18:21:55,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:55,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:55,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:21:55,001 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 18:21:55,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 911802738, now seen corresponding path program 4 times [2024-06-27 18:21:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:55,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939480048] [2024-06-27 18:21:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:55,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:56,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:56,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939480048] [2024-06-27 18:21:56,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939480048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:56,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:56,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:56,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599141878] [2024-06-27 18:21:56,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:56,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:56,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:56,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:56,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:56,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 267 transitions, 2700 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 18:21:56,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:56,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:56,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:57,602 INFO L124 PetriNetUnfolderBase]: 5205/8958 cut-off events. [2024-06-27 18:21:57,602 INFO L125 PetriNetUnfolderBase]: For 276831/276893 co-relation queries the response was YES. [2024-06-27 18:21:57,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55896 conditions, 8958 events. 5205/8958 cut-off events. For 276831/276893 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 64809 event pairs, 1451 based on Foata normal form. 27/8713 useless extension candidates. Maximal degree in co-relation 55806. Up to 7196 conditions per place. [2024-06-27 18:21:57,708 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 241 selfloop transitions, 51 changer transitions 0/307 dead transitions. [2024-06-27 18:21:57,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 307 transitions, 3804 flow [2024-06-27 18:21:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:21:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:21:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:21:57,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 18:21:57,710 INFO L175 Difference]: Start difference. First operand has 208 places, 267 transitions, 2700 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:21:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 307 transitions, 3804 flow [2024-06-27 18:21:58,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 307 transitions, 3693 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:58,183 INFO L231 Difference]: Finished difference. Result has 212 places, 274 transitions, 2884 flow [2024-06-27 18:21:58,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2589, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2884, PETRI_PLACES=212, PETRI_TRANSITIONS=274} [2024-06-27 18:21:58,184 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 159 predicate places. [2024-06-27 18:21:58,184 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 274 transitions, 2884 flow [2024-06-27 18:21:58,184 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 18:21:58,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:58,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:21:58,184 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 18:21:58,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash 912110568, now seen corresponding path program 1 times [2024-06-27 18:21:58,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:58,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012454254] [2024-06-27 18:21:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:59,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:59,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012454254] [2024-06-27 18:21:59,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012454254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:59,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:59,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:21:59,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924018337] [2024-06-27 18:21:59,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:59,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:21:59,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:59,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:21:59,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:21:59,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:21:59,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 274 transitions, 2884 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:59,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:59,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:21:59,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:00,935 INFO L124 PetriNetUnfolderBase]: 5134/8881 cut-off events. [2024-06-27 18:22:00,935 INFO L125 PetriNetUnfolderBase]: For 281932/281963 co-relation queries the response was YES. [2024-06-27 18:22:00,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56072 conditions, 8881 events. 5134/8881 cut-off events. For 281932/281963 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 64472 event pairs, 1536 based on Foata normal form. 18/8593 useless extension candidates. Maximal degree in co-relation 55980. Up to 7324 conditions per place. [2024-06-27 18:22:01,037 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 253 selfloop transitions, 18 changer transitions 0/306 dead transitions. [2024-06-27 18:22:01,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 306 transitions, 3618 flow [2024-06-27 18:22:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:22:01,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:22:01,038 INFO L175 Difference]: Start difference. First operand has 212 places, 274 transitions, 2884 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:22:01,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 306 transitions, 3618 flow [2024-06-27 18:22:01,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 306 transitions, 3411 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:01,501 INFO L231 Difference]: Finished difference. Result has 214 places, 276 transitions, 2784 flow [2024-06-27 18:22:01,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2784, PETRI_PLACES=214, PETRI_TRANSITIONS=276} [2024-06-27 18:22:01,502 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-27 18:22:01,502 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 276 transitions, 2784 flow [2024-06-27 18:22:01,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:01,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:01,503 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 18:22:01,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:22:01,503 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 18:22:01,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash -151771162, now seen corresponding path program 1 times [2024-06-27 18:22:01,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:01,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403690552] [2024-06-27 18:22:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:02,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:02,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403690552] [2024-06-27 18:22:02,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403690552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:02,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:02,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:02,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769805262] [2024-06-27 18:22:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:02,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:02,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:02,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:02,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 276 transitions, 2784 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 18:22:02,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:02,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:02,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:03,695 INFO L124 PetriNetUnfolderBase]: 5601/9273 cut-off events. [2024-06-27 18:22:03,695 INFO L125 PetriNetUnfolderBase]: For 275358/275362 co-relation queries the response was YES. [2024-06-27 18:22:03,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57732 conditions, 9273 events. 5601/9273 cut-off events. For 275358/275362 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 64301 event pairs, 1670 based on Foata normal form. 6/9065 useless extension candidates. Maximal degree in co-relation 57640. Up to 8008 conditions per place. [2024-06-27 18:22:03,807 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 279 selfloop transitions, 34 changer transitions 0/323 dead transitions. [2024-06-27 18:22:03,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 323 transitions, 3692 flow [2024-06-27 18:22:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:22:03,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:22:03,809 INFO L175 Difference]: Start difference. First operand has 214 places, 276 transitions, 2784 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:22:03,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 323 transitions, 3692 flow [2024-06-27 18:22:04,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 323 transitions, 3605 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:04,300 INFO L231 Difference]: Finished difference. Result has 217 places, 285 transitions, 2941 flow [2024-06-27 18:22:04,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2941, PETRI_PLACES=217, PETRI_TRANSITIONS=285} [2024-06-27 18:22:04,300 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-06-27 18:22:04,300 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 285 transitions, 2941 flow [2024-06-27 18:22:04,301 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 18:22:04,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:04,301 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 18:22:04,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:22:04,301 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 18:22:04,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash 484546866, now seen corresponding path program 2 times [2024-06-27 18:22:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493647893] [2024-06-27 18:22:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:04,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493647893] [2024-06-27 18:22:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493647893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:05,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:05,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726177018] [2024-06-27 18:22:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:05,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:05,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:05,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 285 transitions, 2941 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 18:22:05,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:05,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:05,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:06,686 INFO L124 PetriNetUnfolderBase]: 5652/9356 cut-off events. [2024-06-27 18:22:06,687 INFO L125 PetriNetUnfolderBase]: For 292634/292638 co-relation queries the response was YES. [2024-06-27 18:22:06,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59474 conditions, 9356 events. 5652/9356 cut-off events. For 292634/292638 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 64912 event pairs, 1670 based on Foata normal form. 6/9147 useless extension candidates. Maximal degree in co-relation 59380. Up to 8038 conditions per place. [2024-06-27 18:22:06,791 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 285 selfloop transitions, 40 changer transitions 0/335 dead transitions. [2024-06-27 18:22:06,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 335 transitions, 3875 flow [2024-06-27 18:22:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:22:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:22:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:22:06,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-27 18:22:06,796 INFO L175 Difference]: Start difference. First operand has 217 places, 285 transitions, 2941 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:22:06,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 335 transitions, 3875 flow [2024-06-27 18:22:07,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 335 transitions, 3718 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:07,253 INFO L231 Difference]: Finished difference. Result has 221 places, 291 transitions, 2995 flow [2024-06-27 18:22:07,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2995, PETRI_PLACES=221, PETRI_TRANSITIONS=291} [2024-06-27 18:22:07,254 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-06-27 18:22:07,254 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 291 transitions, 2995 flow [2024-06-27 18:22:07,254 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 18:22:07,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:07,254 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 18:22:07,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:22:07,255 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 18:22:07,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1803390806, now seen corresponding path program 1 times [2024-06-27 18:22:07,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651025008] [2024-06-27 18:22:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:07,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:08,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:08,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651025008] [2024-06-27 18:22:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651025008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321155170] [2024-06-27 18:22:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:08,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:08,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:08,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:08,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 291 transitions, 2995 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 18:22:08,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:08,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:08,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:09,805 INFO L124 PetriNetUnfolderBase]: 5719/9464 cut-off events. [2024-06-27 18:22:09,805 INFO L125 PetriNetUnfolderBase]: For 307276/307285 co-relation queries the response was YES. [2024-06-27 18:22:09,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61005 conditions, 9464 events. 5719/9464 cut-off events. For 307276/307285 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65639 event pairs, 1689 based on Foata normal form. 3/9245 useless extension candidates. Maximal degree in co-relation 60910. Up to 8132 conditions per place. [2024-06-27 18:22:09,924 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 288 selfloop transitions, 53 changer transitions 0/351 dead transitions. [2024-06-27 18:22:09,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 351 transitions, 4146 flow [2024-06-27 18:22:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:22:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:22:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 18:22:09,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-06-27 18:22:09,925 INFO L175 Difference]: Start difference. First operand has 221 places, 291 transitions, 2995 flow. Second operand 9 states and 206 transitions. [2024-06-27 18:22:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 351 transitions, 4146 flow [2024-06-27 18:22:10,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 351 transitions, 3997 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:10,420 INFO L231 Difference]: Finished difference. Result has 226 places, 318 transitions, 3381 flow [2024-06-27 18:22:10,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3381, PETRI_PLACES=226, PETRI_TRANSITIONS=318} [2024-06-27 18:22:10,421 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 173 predicate places. [2024-06-27 18:22:10,421 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 318 transitions, 3381 flow [2024-06-27 18:22:10,421 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 18:22:10,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:10,421 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 18:22:10,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:22:10,421 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 18:22:10,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1803569552, now seen corresponding path program 3 times [2024-06-27 18:22:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:10,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812426210] [2024-06-27 18:22:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:10,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:11,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:11,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812426210] [2024-06-27 18:22:11,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812426210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:11,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:11,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888316091] [2024-06-27 18:22:11,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:11,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:11,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:11,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 318 transitions, 3381 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 18:22:11,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:11,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:11,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:12,817 INFO L124 PetriNetUnfolderBase]: 5753/9525 cut-off events. [2024-06-27 18:22:12,818 INFO L125 PetriNetUnfolderBase]: For 325320/325329 co-relation queries the response was YES. [2024-06-27 18:22:12,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62552 conditions, 9525 events. 5753/9525 cut-off events. For 325320/325329 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 66161 event pairs, 1671 based on Foata normal form. 8/9312 useless extension candidates. Maximal degree in co-relation 62454. Up to 8120 conditions per place. [2024-06-27 18:22:12,940 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 297 selfloop transitions, 56 changer transitions 0/363 dead transitions. [2024-06-27 18:22:12,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 363 transitions, 4395 flow [2024-06-27 18:22:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:22:12,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 18:22:12,941 INFO L175 Difference]: Start difference. First operand has 226 places, 318 transitions, 3381 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:22:12,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 363 transitions, 4395 flow [2024-06-27 18:22:13,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 363 transitions, 4279 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:13,554 INFO L231 Difference]: Finished difference. Result has 234 places, 329 transitions, 3621 flow [2024-06-27 18:22:13,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3621, PETRI_PLACES=234, PETRI_TRANSITIONS=329} [2024-06-27 18:22:13,555 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-06-27 18:22:13,555 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 329 transitions, 3621 flow [2024-06-27 18:22:13,555 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 18:22:13,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:13,555 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 18:22:13,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:22:13,556 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 18:22:13,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash 689274930, now seen corresponding path program 4 times [2024-06-27 18:22:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:13,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770916114] [2024-06-27 18:22:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:13,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:14,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770916114] [2024-06-27 18:22:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770916114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920424195] [2024-06-27 18:22:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:14,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:14,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:14,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 329 transitions, 3621 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 18:22:14,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:14,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:16,216 INFO L124 PetriNetUnfolderBase]: 5787/9591 cut-off events. [2024-06-27 18:22:16,216 INFO L125 PetriNetUnfolderBase]: For 352448/352457 co-relation queries the response was YES. [2024-06-27 18:22:16,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64992 conditions, 9591 events. 5787/9591 cut-off events. For 352448/352457 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 66812 event pairs, 1667 based on Foata normal form. 8/9375 useless extension candidates. Maximal degree in co-relation 64890. Up to 8090 conditions per place. [2024-06-27 18:22:16,319 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 293 selfloop transitions, 63 changer transitions 0/366 dead transitions. [2024-06-27 18:22:16,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 366 transitions, 4589 flow [2024-06-27 18:22:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:22:16,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 18:22:16,321 INFO L175 Difference]: Start difference. First operand has 234 places, 329 transitions, 3621 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:22:16,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 366 transitions, 4589 flow [2024-06-27 18:22:16,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 366 transitions, 4403 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:16,876 INFO L231 Difference]: Finished difference. Result has 238 places, 332 transitions, 3671 flow [2024-06-27 18:22:16,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3671, PETRI_PLACES=238, PETRI_TRANSITIONS=332} [2024-06-27 18:22:16,877 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 185 predicate places. [2024-06-27 18:22:16,877 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 332 transitions, 3671 flow [2024-06-27 18:22:16,877 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 18:22:16,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:16,877 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 18:22:16,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:22:16,878 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 18:22:16,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:16,878 INFO L85 PathProgramCache]: Analyzing trace with hash -147002649, now seen corresponding path program 1 times [2024-06-27 18:22:16,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:16,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424178496] [2024-06-27 18:22:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:17,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:17,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424178496] [2024-06-27 18:22:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424178496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:17,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:17,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:17,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440634721] [2024-06-27 18:22:17,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:17,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:17,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:17,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:17,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:17,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 332 transitions, 3671 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 18:22:17,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:17,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:17,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:19,483 INFO L124 PetriNetUnfolderBase]: 5821/9627 cut-off events. [2024-06-27 18:22:19,484 INFO L125 PetriNetUnfolderBase]: For 369775/369784 co-relation queries the response was YES. [2024-06-27 18:22:19,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66046 conditions, 9627 events. 5821/9627 cut-off events. For 369775/369784 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 66967 event pairs, 1664 based on Foata normal form. 8/9414 useless extension candidates. Maximal degree in co-relation 65943. Up to 8298 conditions per place. [2024-06-27 18:22:19,622 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 320 selfloop transitions, 41 changer transitions 0/371 dead transitions. [2024-06-27 18:22:19,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 371 transitions, 4631 flow [2024-06-27 18:22:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:22:19,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:22:19,624 INFO L175 Difference]: Start difference. First operand has 238 places, 332 transitions, 3671 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:22:19,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 371 transitions, 4631 flow [2024-06-27 18:22:20,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 371 transitions, 4421 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:20,176 INFO L231 Difference]: Finished difference. Result has 240 places, 336 transitions, 3640 flow [2024-06-27 18:22:20,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3461, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3640, PETRI_PLACES=240, PETRI_TRANSITIONS=336} [2024-06-27 18:22:20,177 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 187 predicate places. [2024-06-27 18:22:20,177 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 336 transitions, 3640 flow [2024-06-27 18:22:20,177 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 18:22:20,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:20,177 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 18:22:20,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:22:20,177 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 18:22:20,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:20,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1807242380, now seen corresponding path program 5 times [2024-06-27 18:22:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205140325] [2024-06-27 18:22:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:20,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:20,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205140325] [2024-06-27 18:22:20,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205140325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:20,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:20,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:20,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585403869] [2024-06-27 18:22:20,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:20,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:20,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:21,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:21,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 336 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 18:22:21,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:21,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:21,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:22,863 INFO L124 PetriNetUnfolderBase]: 5855/9677 cut-off events. [2024-06-27 18:22:22,863 INFO L125 PetriNetUnfolderBase]: For 384947/384947 co-relation queries the response was YES. [2024-06-27 18:22:22,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67403 conditions, 9677 events. 5855/9677 cut-off events. For 384947/384947 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 67284 event pairs, 1667 based on Foata normal form. 2/9459 useless extension candidates. Maximal degree in co-relation 67299. Up to 8334 conditions per place. [2024-06-27 18:22:22,987 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 324 selfloop transitions, 37 changer transitions 0/371 dead transitions. [2024-06-27 18:22:22,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 371 transitions, 4628 flow [2024-06-27 18:22:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:22:22,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:22:22,989 INFO L175 Difference]: Start difference. First operand has 240 places, 336 transitions, 3640 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:22:22,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 371 transitions, 4628 flow [2024-06-27 18:22:23,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 371 transitions, 4477 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:23,685 INFO L231 Difference]: Finished difference. Result has 242 places, 339 transitions, 3681 flow [2024-06-27 18:22:23,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3489, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3681, PETRI_PLACES=242, PETRI_TRANSITIONS=339} [2024-06-27 18:22:23,686 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 189 predicate places. [2024-06-27 18:22:23,686 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 339 transitions, 3681 flow [2024-06-27 18:22:23,686 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 18:22:23,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:23,687 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 18:22:23,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:22:23,687 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 18:22:23,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:23,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1807629663, now seen corresponding path program 2 times [2024-06-27 18:22:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:23,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113124608] [2024-06-27 18:22:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:23,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:24,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:24,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113124608] [2024-06-27 18:22:24,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113124608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:24,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:24,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:24,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983968801] [2024-06-27 18:22:24,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:24,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:24,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:24,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:24,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 339 transitions, 3681 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 18:22:24,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:24,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:24,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:26,439 INFO L124 PetriNetUnfolderBase]: 5912/9764 cut-off events. [2024-06-27 18:22:26,439 INFO L125 PetriNetUnfolderBase]: For 407909/407918 co-relation queries the response was YES. [2024-06-27 18:22:26,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68912 conditions, 9764 events. 5912/9764 cut-off events. For 407909/407918 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 67937 event pairs, 1668 based on Foata normal form. 7/9549 useless extension candidates. Maximal degree in co-relation 68807. Up to 8304 conditions per place. [2024-06-27 18:22:26,551 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 318 selfloop transitions, 55 changer transitions 0/383 dead transitions. [2024-06-27 18:22:26,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 383 transitions, 4867 flow [2024-06-27 18:22:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:22:26,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 18:22:26,552 INFO L175 Difference]: Start difference. First operand has 242 places, 339 transitions, 3681 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:22:26,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 383 transitions, 4867 flow [2024-06-27 18:22:27,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 383 transitions, 4665 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:27,144 INFO L231 Difference]: Finished difference. Result has 244 places, 348 transitions, 3775 flow [2024-06-27 18:22:27,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3775, PETRI_PLACES=244, PETRI_TRANSITIONS=348} [2024-06-27 18:22:27,145 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 191 predicate places. [2024-06-27 18:22:27,145 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 348 transitions, 3775 flow [2024-06-27 18:22:27,145 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 18:22:27,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:27,146 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 18:22:27,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:22:27,146 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 18:22:27,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1625215609, now seen corresponding path program 3 times [2024-06-27 18:22:27,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:27,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125752061] [2024-06-27 18:22:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:27,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:27,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125752061] [2024-06-27 18:22:27,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125752061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:27,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:27,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:27,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243220091] [2024-06-27 18:22:27,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:27,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:27,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:28,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:28,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 348 transitions, 3775 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 18:22:28,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:28,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:28,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:29,744 INFO L124 PetriNetUnfolderBase]: 5946/9820 cut-off events. [2024-06-27 18:22:29,744 INFO L125 PetriNetUnfolderBase]: For 429154/429163 co-relation queries the response was YES. [2024-06-27 18:22:29,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70680 conditions, 9820 events. 5946/9820 cut-off events. For 429154/429163 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 68360 event pairs, 1670 based on Foata normal form. 8/9604 useless extension candidates. Maximal degree in co-relation 70575. Up to 8408 conditions per place. [2024-06-27 18:22:29,876 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 330 selfloop transitions, 47 changer transitions 0/387 dead transitions. [2024-06-27 18:22:29,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 387 transitions, 4829 flow [2024-06-27 18:22:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:22:29,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:22:29,878 INFO L175 Difference]: Start difference. First operand has 244 places, 348 transitions, 3775 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:22:29,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 387 transitions, 4829 flow [2024-06-27 18:22:30,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 387 transitions, 4699 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:30,645 INFO L231 Difference]: Finished difference. Result has 248 places, 352 transitions, 3858 flow [2024-06-27 18:22:30,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3663, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3858, PETRI_PLACES=248, PETRI_TRANSITIONS=352} [2024-06-27 18:22:30,645 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 195 predicate places. [2024-06-27 18:22:30,646 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 352 transitions, 3858 flow [2024-06-27 18:22:30,646 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 18:22:30,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:30,646 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 18:22:30,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:22:30,646 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 18:22:30,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1408324520, now seen corresponding path program 6 times [2024-06-27 18:22:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:30,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190060293] [2024-06-27 18:22:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:30,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:31,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:31,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190060293] [2024-06-27 18:22:31,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190060293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:31,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:31,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:31,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417610894] [2024-06-27 18:22:31,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:31,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:31,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:31,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:31,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:31,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 352 transitions, 3858 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 18:22:31,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:31,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:31,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:33,027 INFO L124 PetriNetUnfolderBase]: 6020/9950 cut-off events. [2024-06-27 18:22:33,027 INFO L125 PetriNetUnfolderBase]: For 448424/448433 co-relation queries the response was YES. [2024-06-27 18:22:33,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72476 conditions, 9950 events. 6020/9950 cut-off events. For 448424/448433 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 69554 event pairs, 1680 based on Foata normal form. 8/9730 useless extension candidates. Maximal degree in co-relation 72369. Up to 8211 conditions per place. [2024-06-27 18:22:33,163 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 302 selfloop transitions, 81 changer transitions 0/393 dead transitions. [2024-06-27 18:22:33,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 393 transitions, 5176 flow [2024-06-27 18:22:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:22:33,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-27 18:22:33,165 INFO L175 Difference]: Start difference. First operand has 248 places, 352 transitions, 3858 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:22:33,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 393 transitions, 5176 flow [2024-06-27 18:22:33,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 393 transitions, 5021 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:33,841 INFO L231 Difference]: Finished difference. Result has 250 places, 358 transitions, 4105 flow [2024-06-27 18:22:33,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3703, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4105, PETRI_PLACES=250, PETRI_TRANSITIONS=358} [2024-06-27 18:22:33,842 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 197 predicate places. [2024-06-27 18:22:33,842 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 358 transitions, 4105 flow [2024-06-27 18:22:33,842 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 18:22:33,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:33,842 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 18:22:33,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:22:33,843 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 18:22:33,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:33,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1921720658, now seen corresponding path program 1 times [2024-06-27 18:22:33,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:33,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704678693] [2024-06-27 18:22:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:33,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:34,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704678693] [2024-06-27 18:22:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704678693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:34,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:34,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:34,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586223026] [2024-06-27 18:22:34,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:34,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:34,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:34,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 358 transitions, 4105 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 18:22:34,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:34,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:34,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:36,556 INFO L124 PetriNetUnfolderBase]: 6048/10022 cut-off events. [2024-06-27 18:22:36,556 INFO L125 PetriNetUnfolderBase]: For 471715/471715 co-relation queries the response was YES. [2024-06-27 18:22:36,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73960 conditions, 10022 events. 6048/10022 cut-off events. For 471715/471715 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 70153 event pairs, 1440 based on Foata normal form. 2/9787 useless extension candidates. Maximal degree in co-relation 73852. Up to 8586 conditions per place. [2024-06-27 18:22:36,707 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 358 selfloop transitions, 34 changer transitions 0/402 dead transitions. [2024-06-27 18:22:36,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 402 transitions, 5125 flow [2024-06-27 18:22:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:22:36,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 18:22:36,709 INFO L175 Difference]: Start difference. First operand has 250 places, 358 transitions, 4105 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:22:36,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 402 transitions, 5125 flow [2024-06-27 18:22:37,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 402 transitions, 4956 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:37,653 INFO L231 Difference]: Finished difference. Result has 255 places, 363 transitions, 4123 flow [2024-06-27 18:22:37,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3936, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4123, PETRI_PLACES=255, PETRI_TRANSITIONS=363} [2024-06-27 18:22:37,653 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 202 predicate places. [2024-06-27 18:22:37,653 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 363 transitions, 4123 flow [2024-06-27 18:22:37,654 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 18:22:37,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:37,654 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 18:22:37,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:22:37,654 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 18:22:37,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:37,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1519458344, now seen corresponding path program 2 times [2024-06-27 18:22:37,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:37,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363429502] [2024-06-27 18:22:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:37,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:38,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:38,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363429502] [2024-06-27 18:22:38,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363429502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:38,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:38,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:38,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391924494] [2024-06-27 18:22:38,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:38,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:38,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:38,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:38,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:38,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 363 transitions, 4123 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 18:22:38,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:38,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:38,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:40,372 INFO L124 PetriNetUnfolderBase]: 6076/10038 cut-off events. [2024-06-27 18:22:40,372 INFO L125 PetriNetUnfolderBase]: For 483645/483645 co-relation queries the response was YES. [2024-06-27 18:22:40,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74874 conditions, 10038 events. 6076/10038 cut-off events. For 483645/483645 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 70103 event pairs, 1689 based on Foata normal form. 2/9809 useless extension candidates. Maximal degree in co-relation 74763. Up to 8665 conditions per place. [2024-06-27 18:22:40,509 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 358 selfloop transitions, 34 changer transitions 0/402 dead transitions. [2024-06-27 18:22:40,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 402 transitions, 5131 flow [2024-06-27 18:22:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:22:40,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:22:40,510 INFO L175 Difference]: Start difference. First operand has 255 places, 363 transitions, 4123 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:22:40,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 402 transitions, 5131 flow [2024-06-27 18:22:41,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 402 transitions, 5004 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:41,360 INFO L231 Difference]: Finished difference. Result has 259 places, 365 transitions, 4143 flow [2024-06-27 18:22:41,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3996, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4143, PETRI_PLACES=259, PETRI_TRANSITIONS=365} [2024-06-27 18:22:41,360 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 206 predicate places. [2024-06-27 18:22:41,360 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 365 transitions, 4143 flow [2024-06-27 18:22:41,361 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 18:22:41,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:41,361 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 18:22:41,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:22:41,361 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 18:22:41,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:41,361 INFO L85 PathProgramCache]: Analyzing trace with hash 30928082, now seen corresponding path program 3 times [2024-06-27 18:22:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:41,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170858466] [2024-06-27 18:22:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:41,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:42,094 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 18:22:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170858466] [2024-06-27 18:22:42,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170858466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:42,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:42,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:42,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242044425] [2024-06-27 18:22:42,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:42,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:42,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:42,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:42,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:42,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:42,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 365 transitions, 4143 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 18:22:42,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:42,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:42,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:44,010 INFO L124 PetriNetUnfolderBase]: 6104/10082 cut-off events. [2024-06-27 18:22:44,010 INFO L125 PetriNetUnfolderBase]: For 498387/498387 co-relation queries the response was YES. [2024-06-27 18:22:44,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75492 conditions, 10082 events. 6104/10082 cut-off events. For 498387/498387 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 70546 event pairs, 1688 based on Foata normal form. 2/9851 useless extension candidates. Maximal degree in co-relation 75380. Up to 8677 conditions per place. [2024-06-27 18:22:44,146 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 353 selfloop transitions, 36 changer transitions 0/399 dead transitions. [2024-06-27 18:22:44,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 399 transitions, 5147 flow [2024-06-27 18:22:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:22:44,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-27 18:22:44,148 INFO L175 Difference]: Start difference. First operand has 259 places, 365 transitions, 4143 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:22:44,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 399 transitions, 5147 flow [2024-06-27 18:22:45,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 399 transitions, 4997 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:45,133 INFO L231 Difference]: Finished difference. Result has 260 places, 367 transitions, 4148 flow [2024-06-27 18:22:45,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3993, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4148, PETRI_PLACES=260, PETRI_TRANSITIONS=367} [2024-06-27 18:22:45,134 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 207 predicate places. [2024-06-27 18:22:45,134 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 367 transitions, 4148 flow [2024-06-27 18:22:45,134 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 18:22:45,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:45,134 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 18:22:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:22:45,135 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 18:22:45,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1631495562, now seen corresponding path program 2 times [2024-06-27 18:22:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:45,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356283023] [2024-06-27 18:22:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:45,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:45,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356283023] [2024-06-27 18:22:45,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356283023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:45,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:45,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:45,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496873640] [2024-06-27 18:22:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:45,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:45,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:45,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:45,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:46,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:46,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 367 transitions, 4148 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 18:22:46,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:46,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:46,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:47,986 INFO L124 PetriNetUnfolderBase]: 6121/10122 cut-off events. [2024-06-27 18:22:47,986 INFO L125 PetriNetUnfolderBase]: For 507844/507847 co-relation queries the response was YES. [2024-06-27 18:22:48,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75934 conditions, 10122 events. 6121/10122 cut-off events. For 507844/507847 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 70974 event pairs, 1707 based on Foata normal form. 3/9885 useless extension candidates. Maximal degree in co-relation 75821. Up to 8682 conditions per place. [2024-06-27 18:22:48,156 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 339 selfloop transitions, 55 changer transitions 0/404 dead transitions. [2024-06-27 18:22:48,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 404 transitions, 5181 flow [2024-06-27 18:22:48,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:22:48,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:22:48,157 INFO L175 Difference]: Start difference. First operand has 260 places, 367 transitions, 4148 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:22:48,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 404 transitions, 5181 flow [2024-06-27 18:22:49,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 404 transitions, 5042 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:49,217 INFO L231 Difference]: Finished difference. Result has 262 places, 371 transitions, 4252 flow [2024-06-27 18:22:49,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4252, PETRI_PLACES=262, PETRI_TRANSITIONS=371} [2024-06-27 18:22:49,218 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 209 predicate places. [2024-06-27 18:22:49,218 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 371 transitions, 4252 flow [2024-06-27 18:22:49,218 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 18:22:49,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:49,218 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 18:22:49,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:22:49,219 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 18:22:49,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1483066136, now seen corresponding path program 3 times [2024-06-27 18:22:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126690311] [2024-06-27 18:22:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:50,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:50,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126690311] [2024-06-27 18:22:50,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126690311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:50,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:50,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081902173] [2024-06-27 18:22:50,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:50,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:50,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 371 transitions, 4252 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 18:22:50,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:50,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:50,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:52,313 INFO L124 PetriNetUnfolderBase]: 6143/10156 cut-off events. [2024-06-27 18:22:52,313 INFO L125 PetriNetUnfolderBase]: For 527103/527106 co-relation queries the response was YES. [2024-06-27 18:22:52,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76976 conditions, 10156 events. 6143/10156 cut-off events. For 527103/527106 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 71232 event pairs, 1705 based on Foata normal form. 3/9918 useless extension candidates. Maximal degree in co-relation 76862. Up to 8669 conditions per place. [2024-06-27 18:22:52,501 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 334 selfloop transitions, 66 changer transitions 0/410 dead transitions. [2024-06-27 18:22:52,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 410 transitions, 5558 flow [2024-06-27 18:22:52,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:22:52,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:22:52,502 INFO L175 Difference]: Start difference. First operand has 262 places, 371 transitions, 4252 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:22:52,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 410 transitions, 5558 flow [2024-06-27 18:22:53,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 410 transitions, 5353 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:53,481 INFO L231 Difference]: Finished difference. Result has 266 places, 377 transitions, 4427 flow [2024-06-27 18:22:53,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4047, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4427, PETRI_PLACES=266, PETRI_TRANSITIONS=377} [2024-06-27 18:22:53,482 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-06-27 18:22:53,482 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 377 transitions, 4427 flow [2024-06-27 18:22:53,482 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 18:22:53,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:53,483 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 18:22:53,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:22:53,483 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 18:22:53,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:53,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1931651546, now seen corresponding path program 7 times [2024-06-27 18:22:53,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:53,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058970854] [2024-06-27 18:22:53,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:53,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:54,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058970854] [2024-06-27 18:22:54,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058970854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:54,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:54,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:54,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224698942] [2024-06-27 18:22:54,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:54,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:54,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:54,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:54,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:54,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:54,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 377 transitions, 4427 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 18:22:54,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:54,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:54,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:56,241 INFO L124 PetriNetUnfolderBase]: 6177/10221 cut-off events. [2024-06-27 18:22:56,241 INFO L125 PetriNetUnfolderBase]: For 552130/552130 co-relation queries the response was YES. [2024-06-27 18:22:56,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78323 conditions, 10221 events. 6177/10221 cut-off events. For 552130/552130 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 71801 event pairs, 1730 based on Foata normal form. 2/9975 useless extension candidates. Maximal degree in co-relation 78208. Up to 8700 conditions per place. [2024-06-27 18:22:56,605 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 348 selfloop transitions, 54 changer transitions 0/412 dead transitions. [2024-06-27 18:22:56,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 412 transitions, 5475 flow [2024-06-27 18:22:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:22:56,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:22:56,607 INFO L175 Difference]: Start difference. First operand has 266 places, 377 transitions, 4427 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:22:56,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 412 transitions, 5475 flow [2024-06-27 18:22:57,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 412 transitions, 5281 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:57,495 INFO L231 Difference]: Finished difference. Result has 270 places, 380 transitions, 4465 flow [2024-06-27 18:22:57,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4465, PETRI_PLACES=270, PETRI_TRANSITIONS=380} [2024-06-27 18:22:57,496 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 217 predicate places. [2024-06-27 18:22:57,496 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 380 transitions, 4465 flow [2024-06-27 18:22:57,496 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 18:22:57,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:57,496 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 18:22:57,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:22:57,496 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 18:22:57,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1722424886, now seen corresponding path program 4 times [2024-06-27 18:22:57,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:57,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330308457] [2024-06-27 18:22:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:57,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:58,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330308457] [2024-06-27 18:22:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330308457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:58,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:58,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:58,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985536612] [2024-06-27 18:22:58,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:58,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:58,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:58,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:58,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 380 transitions, 4465 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 18:22:58,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:58,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:58,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:00,331 INFO L124 PetriNetUnfolderBase]: 6199/10289 cut-off events. [2024-06-27 18:23:00,331 INFO L125 PetriNetUnfolderBase]: For 559491/559494 co-relation queries the response was YES. [2024-06-27 18:23:00,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78849 conditions, 10289 events. 6199/10289 cut-off events. For 559491/559494 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 72669 event pairs, 1705 based on Foata normal form. 3/10036 useless extension candidates. Maximal degree in co-relation 78732. Up to 8744 conditions per place. [2024-06-27 18:23:00,483 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 342 selfloop transitions, 71 changer transitions 0/423 dead transitions. [2024-06-27 18:23:00,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 423 transitions, 5649 flow [2024-06-27 18:23:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:23:00,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 18:23:00,484 INFO L175 Difference]: Start difference. First operand has 270 places, 380 transitions, 4465 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:23:00,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 423 transitions, 5649 flow [2024-06-27 18:23:01,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 423 transitions, 5422 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:01,805 INFO L231 Difference]: Finished difference. Result has 272 places, 386 transitions, 4628 flow [2024-06-27 18:23:01,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4238, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4628, PETRI_PLACES=272, PETRI_TRANSITIONS=386} [2024-06-27 18:23:01,805 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-06-27 18:23:01,806 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 386 transitions, 4628 flow [2024-06-27 18:23:01,806 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 18:23:01,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:01,806 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 18:23:01,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:23:01,806 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 18:23:01,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1722304172, now seen corresponding path program 8 times [2024-06-27 18:23:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:01,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740926572] [2024-06-27 18:23:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:02,471 INFO 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 18:23:02,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:02,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740926572] [2024-06-27 18:23:02,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740926572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:02,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:02,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:02,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485565591] [2024-06-27 18:23:02,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:02,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:02,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:02,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:02,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:02,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:02,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 386 transitions, 4628 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 18:23:02,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:02,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:02,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:04,498 INFO L124 PetriNetUnfolderBase]: 6193/10243 cut-off events. [2024-06-27 18:23:04,499 INFO L125 PetriNetUnfolderBase]: For 571940/571940 co-relation queries the response was YES. [2024-06-27 18:23:04,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78980 conditions, 10243 events. 6193/10243 cut-off events. For 571940/571940 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 71984 event pairs, 1716 based on Foata normal form. 2/9998 useless extension candidates. Maximal degree in co-relation 78862. Up to 8674 conditions per place. [2024-06-27 18:23:04,651 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 349 selfloop transitions, 59 changer transitions 0/418 dead transitions. [2024-06-27 18:23:04,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 418 transitions, 5612 flow [2024-06-27 18:23:04,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:23:04,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 18:23:04,653 INFO L175 Difference]: Start difference. First operand has 272 places, 386 transitions, 4628 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:23:04,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 418 transitions, 5612 flow [2024-06-27 18:23:05,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 418 transitions, 5214 flow, removed 132 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:05,959 INFO L231 Difference]: Finished difference. Result has 274 places, 386 transitions, 4354 flow [2024-06-27 18:23:05,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4354, PETRI_PLACES=274, PETRI_TRANSITIONS=386} [2024-06-27 18:23:05,960 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 221 predicate places. [2024-06-27 18:23:05,960 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 386 transitions, 4354 flow [2024-06-27 18:23:05,960 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 18:23:05,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:05,960 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 18:23:05,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:23:05,960 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 18:23:05,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:05,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1722303769, now seen corresponding path program 4 times [2024-06-27 18:23:05,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:05,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396904533] [2024-06-27 18:23:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:05,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:06,703 INFO 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 18:23:06,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:06,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396904533] [2024-06-27 18:23:06,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396904533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:06,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:06,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:06,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57769921] [2024-06-27 18:23:06,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:06,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:06,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:06,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:06,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 386 transitions, 4354 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 18:23:06,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:06,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:06,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:08,837 INFO L124 PetriNetUnfolderBase]: 6187/10232 cut-off events. [2024-06-27 18:23:08,837 INFO L125 PetriNetUnfolderBase]: For 568531/568534 co-relation queries the response was YES. [2024-06-27 18:23:08,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78282 conditions, 10232 events. 6187/10232 cut-off events. For 568531/568534 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 71847 event pairs, 1707 based on Foata normal form. 4/9993 useless extension candidates. Maximal degree in co-relation 78163. Up to 8804 conditions per place. [2024-06-27 18:23:09,017 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 370 selfloop transitions, 40 changer transitions 0/420 dead transitions. [2024-06-27 18:23:09,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 420 transitions, 5357 flow [2024-06-27 18:23:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:23:09,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:23:09,019 INFO L175 Difference]: Start difference. First operand has 274 places, 386 transitions, 4354 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:23:09,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 420 transitions, 5357 flow [2024-06-27 18:23:10,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 420 transitions, 5099 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:10,287 INFO L231 Difference]: Finished difference. Result has 275 places, 387 transitions, 4208 flow [2024-06-27 18:23:10,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4110, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4208, PETRI_PLACES=275, PETRI_TRANSITIONS=387} [2024-06-27 18:23:10,288 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 222 predicate places. [2024-06-27 18:23:10,288 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 387 transitions, 4208 flow [2024-06-27 18:23:10,288 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 18:23:10,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:10,288 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 18:23:10,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:23:10,288 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 18:23:10,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1367118572, now seen corresponding path program 9 times [2024-06-27 18:23:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:10,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397866110] [2024-06-27 18:23:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:10,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:11,029 INFO 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 18:23:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397866110] [2024-06-27 18:23:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397866110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:11,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:11,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853033448] [2024-06-27 18:23:11,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:11,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:11,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:11,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 387 transitions, 4208 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 18:23:11,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:11,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:11,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:12,988 INFO L124 PetriNetUnfolderBase]: 6221/10301 cut-off events. [2024-06-27 18:23:12,988 INFO L125 PetriNetUnfolderBase]: For 580198/580198 co-relation queries the response was YES. [2024-06-27 18:23:13,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78694 conditions, 10301 events. 6221/10301 cut-off events. For 580198/580198 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 72519 event pairs, 1706 based on Foata normal form. 2/10053 useless extension candidates. Maximal degree in co-relation 78574. Up to 8540 conditions per place. [2024-06-27 18:23:13,138 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 335 selfloop transitions, 77 changer transitions 0/422 dead transitions. [2024-06-27 18:23:13,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 422 transitions, 5374 flow [2024-06-27 18:23:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:23:13,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:23:13,140 INFO L175 Difference]: Start difference. First operand has 275 places, 387 transitions, 4208 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:23:13,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 422 transitions, 5374 flow [2024-06-27 18:23:14,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 422 transitions, 5279 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:14,372 INFO L231 Difference]: Finished difference. Result has 277 places, 390 transitions, 4417 flow [2024-06-27 18:23:14,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4113, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4417, PETRI_PLACES=277, PETRI_TRANSITIONS=390} [2024-06-27 18:23:14,373 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 224 predicate places. [2024-06-27 18:23:14,374 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 390 transitions, 4417 flow [2024-06-27 18:23:14,374 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 18:23:14,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:14,374 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 18:23:14,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:23:14,374 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 18:23:14,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1576166083, now seen corresponding path program 5 times [2024-06-27 18:23:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:14,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216140236] [2024-06-27 18:23:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:14,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:15,351 INFO 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 18:23:15,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:15,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216140236] [2024-06-27 18:23:15,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216140236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:15,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:15,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999372464] [2024-06-27 18:23:15,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:15,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:15,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:15,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:15,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:15,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:15,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 390 transitions, 4417 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 18:23:15,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:15,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:15,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:17,406 INFO L124 PetriNetUnfolderBase]: 6255/10340 cut-off events. [2024-06-27 18:23:17,407 INFO L125 PetriNetUnfolderBase]: For 608840/608843 co-relation queries the response was YES. [2024-06-27 18:23:17,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80424 conditions, 10340 events. 6255/10340 cut-off events. For 608840/608843 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 72666 event pairs, 1683 based on Foata normal form. 4/10099 useless extension candidates. Maximal degree in co-relation 80303. Up to 8824 conditions per place. [2024-06-27 18:23:17,570 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 369 selfloop transitions, 48 changer transitions 0/427 dead transitions. [2024-06-27 18:23:17,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 427 transitions, 5565 flow [2024-06-27 18:23:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:23:17,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:23:17,572 INFO L175 Difference]: Start difference. First operand has 277 places, 390 transitions, 4417 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:23:17,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 427 transitions, 5565 flow [2024-06-27 18:23:18,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 427 transitions, 5291 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:18,807 INFO L231 Difference]: Finished difference. Result has 279 places, 394 transitions, 4372 flow [2024-06-27 18:23:18,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4143, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4372, PETRI_PLACES=279, PETRI_TRANSITIONS=394} [2024-06-27 18:23:18,807 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-06-27 18:23:18,808 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 394 transitions, 4372 flow [2024-06-27 18:23:18,808 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 18:23:18,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:18,808 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 18:23:18,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:23:18,808 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 18:23:18,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:18,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1575720613, now seen corresponding path program 6 times [2024-06-27 18:23:18,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:18,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114315906] [2024-06-27 18:23:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:18,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:19,563 INFO 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 18:23:19,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:19,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114315906] [2024-06-27 18:23:19,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114315906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:19,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:19,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:19,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384535804] [2024-06-27 18:23:19,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:19,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:19,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:19,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:19,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 394 transitions, 4372 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 18:23:19,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:19,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:19,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:21,713 INFO L124 PetriNetUnfolderBase]: 6289/10406 cut-off events. [2024-06-27 18:23:21,713 INFO L125 PetriNetUnfolderBase]: For 627173/627176 co-relation queries the response was YES. [2024-06-27 18:23:21,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81525 conditions, 10406 events. 6289/10406 cut-off events. For 627173/627176 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 73415 event pairs, 1679 based on Foata normal form. 4/10159 useless extension candidates. Maximal degree in co-relation 81403. Up to 8782 conditions per place. [2024-06-27 18:23:21,896 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 361 selfloop transitions, 63 changer transitions 0/434 dead transitions. [2024-06-27 18:23:21,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 434 transitions, 5557 flow [2024-06-27 18:23:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:23:21,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:23:21,897 INFO L175 Difference]: Start difference. First operand has 279 places, 394 transitions, 4372 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:23:21,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 434 transitions, 5557 flow [2024-06-27 18:23:23,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 434 transitions, 5356 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:23,451 INFO L231 Difference]: Finished difference. Result has 282 places, 402 transitions, 4497 flow [2024-06-27 18:23:23,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4171, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4497, PETRI_PLACES=282, PETRI_TRANSITIONS=402} [2024-06-27 18:23:23,451 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 229 predicate places. [2024-06-27 18:23:23,451 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 402 transitions, 4497 flow [2024-06-27 18:23:23,452 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 18:23:23,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:23,453 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 18:23:23,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:23:23,453 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 18:23:23,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:23,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2055839129, now seen corresponding path program 7 times [2024-06-27 18:23:23,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:23,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674281608] [2024-06-27 18:23:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:24,452 INFO 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 18:23:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674281608] [2024-06-27 18:23:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674281608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:24,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:24,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:24,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958865824] [2024-06-27 18:23:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:24,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:24,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:24,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 402 transitions, 4497 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 18:23:24,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:24,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:24,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:26,566 INFO L124 PetriNetUnfolderBase]: 6323/10622 cut-off events. [2024-06-27 18:23:26,567 INFO L125 PetriNetUnfolderBase]: For 660666/660678 co-relation queries the response was YES. [2024-06-27 18:23:26,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83507 conditions, 10622 events. 6323/10622 cut-off events. For 660666/660678 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 76139 event pairs, 1604 based on Foata normal form. 10/10322 useless extension candidates. Maximal degree in co-relation 83383. Up to 8785 conditions per place. [2024-06-27 18:23:26,714 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 366 selfloop transitions, 63 changer transitions 0/439 dead transitions. [2024-06-27 18:23:26,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 439 transitions, 5733 flow [2024-06-27 18:23:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:23:26,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:23:26,715 INFO L175 Difference]: Start difference. First operand has 282 places, 402 transitions, 4497 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:23:26,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 439 transitions, 5733 flow [2024-06-27 18:23:28,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 439 transitions, 5557 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:28,121 INFO L231 Difference]: Finished difference. Result has 286 places, 406 transitions, 4596 flow [2024-06-27 18:23:28,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4321, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4596, PETRI_PLACES=286, PETRI_TRANSITIONS=406} [2024-06-27 18:23:28,122 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 233 predicate places. [2024-06-27 18:23:28,122 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 406 transitions, 4596 flow [2024-06-27 18:23:28,122 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 18:23:28,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:28,122 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 18:23:28,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:23:28,122 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 18:23:28,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:28,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2055839532, now seen corresponding path program 10 times [2024-06-27 18:23:28,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:28,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893500341] [2024-06-27 18:23:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:28,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:28,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893500341] [2024-06-27 18:23:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893500341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:28,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:28,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:28,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633243807] [2024-06-27 18:23:28,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:28,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:28,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:28,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:28,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:28,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:28,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 406 transitions, 4596 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 18:23:28,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:28,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:28,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:31,027 INFO L124 PetriNetUnfolderBase]: 6382/10720 cut-off events. [2024-06-27 18:23:31,027 INFO L125 PetriNetUnfolderBase]: For 698758/698767 co-relation queries the response was YES. [2024-06-27 18:23:31,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86316 conditions, 10720 events. 6382/10720 cut-off events. For 698758/698767 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 76979 event pairs, 1670 based on Foata normal form. 8/10423 useless extension candidates. Maximal degree in co-relation 86190. Up to 8451 conditions per place. [2024-06-27 18:23:31,162 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 327 selfloop transitions, 108 changer transitions 0/445 dead transitions. [2024-06-27 18:23:31,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 445 transitions, 6178 flow [2024-06-27 18:23:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:23:31,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:23:31,163 INFO L175 Difference]: Start difference. First operand has 286 places, 406 transitions, 4596 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:23:31,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 445 transitions, 6178 flow [2024-06-27 18:23:32,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 445 transitions, 5931 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:32,436 INFO L231 Difference]: Finished difference. Result has 288 places, 412 transitions, 4877 flow [2024-06-27 18:23:32,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4877, PETRI_PLACES=288, PETRI_TRANSITIONS=412} [2024-06-27 18:23:32,436 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 235 predicate places. [2024-06-27 18:23:32,437 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 412 transitions, 4877 flow [2024-06-27 18:23:32,437 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 18:23:32,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:32,437 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 18:23:32,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:23:32,437 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 18:23:32,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2055393659, now seen corresponding path program 8 times [2024-06-27 18:23:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:32,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289812575] [2024-06-27 18:23:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:33,298 INFO 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 18:23:33,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:33,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289812575] [2024-06-27 18:23:33,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289812575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:33,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:33,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175286673] [2024-06-27 18:23:33,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:33,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:33,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:33,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:33,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 412 transitions, 4877 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 18:23:33,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:33,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:33,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:35,436 INFO L124 PetriNetUnfolderBase]: 6456/10817 cut-off events. [2024-06-27 18:23:35,436 INFO L125 PetriNetUnfolderBase]: For 738408/738420 co-relation queries the response was YES. [2024-06-27 18:23:35,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88723 conditions, 10817 events. 6456/10817 cut-off events. For 738408/738420 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 77623 event pairs, 1605 based on Foata normal form. 10/10517 useless extension candidates. Maximal degree in co-relation 88596. Up to 8875 conditions per place. [2024-06-27 18:23:35,609 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 369 selfloop transitions, 77 changer transitions 0/456 dead transitions. [2024-06-27 18:23:35,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 456 transitions, 6450 flow [2024-06-27 18:23:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:23:35,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:23:35,611 INFO L175 Difference]: Start difference. First operand has 288 places, 412 transitions, 4877 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:23:35,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 456 transitions, 6450 flow [2024-06-27 18:23:37,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 456 transitions, 6197 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:37,340 INFO L231 Difference]: Finished difference. Result has 293 places, 423 transitions, 5127 flow [2024-06-27 18:23:37,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5127, PETRI_PLACES=293, PETRI_TRANSITIONS=423} [2024-06-27 18:23:37,340 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 240 predicate places. [2024-06-27 18:23:37,340 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 423 transitions, 5127 flow [2024-06-27 18:23:37,341 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 18:23:37,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:37,341 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 18:23:37,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:23:37,341 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 18:23:37,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:37,342 INFO L85 PathProgramCache]: Analyzing trace with hash -407477554, now seen corresponding path program 11 times [2024-06-27 18:23:37,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:37,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155272258] [2024-06-27 18:23:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:37,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:38,074 INFO 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 18:23:38,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:38,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155272258] [2024-06-27 18:23:38,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155272258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:38,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:38,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:38,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794515259] [2024-06-27 18:23:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:38,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:38,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:38,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 423 transitions, 5127 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 18:23:38,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:38,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:38,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:40,412 INFO L124 PetriNetUnfolderBase]: 6490/10933 cut-off events. [2024-06-27 18:23:40,412 INFO L125 PetriNetUnfolderBase]: For 750686/750686 co-relation queries the response was YES. [2024-06-27 18:23:40,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90511 conditions, 10933 events. 6490/10933 cut-off events. For 750686/750686 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 78990 event pairs, 1687 based on Foata normal form. 2/10609 useless extension candidates. Maximal degree in co-relation 90381. Up to 9169 conditions per place. [2024-06-27 18:23:40,572 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 402 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2024-06-27 18:23:40,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 455 transitions, 6353 flow [2024-06-27 18:23:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:40,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:23:40,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:23:40,574 INFO L175 Difference]: Start difference. First operand has 293 places, 423 transitions, 5127 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:23:40,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 455 transitions, 6353 flow [2024-06-27 18:23:42,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 455 transitions, 6123 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:42,208 INFO L231 Difference]: Finished difference. Result has 297 places, 426 transitions, 5141 flow [2024-06-27 18:23:42,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4897, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5141, PETRI_PLACES=297, PETRI_TRANSITIONS=426} [2024-06-27 18:23:42,209 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-06-27 18:23:42,209 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 426 transitions, 5141 flow [2024-06-27 18:23:42,209 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 18:23:42,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:42,210 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 18:23:42,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:23:42,210 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 18:23:42,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash -407090271, now seen corresponding path program 9 times [2024-06-27 18:23:42,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:42,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611093665] [2024-06-27 18:23:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:42,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:42,986 INFO 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 18:23:42,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611093665] [2024-06-27 18:23:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611093665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:42,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:42,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:42,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977070786] [2024-06-27 18:23:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:42,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:43,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:43,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 426 transitions, 5141 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 18:23:43,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:43,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:43,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:45,377 INFO L124 PetriNetUnfolderBase]: 6507/10922 cut-off events. [2024-06-27 18:23:45,377 INFO L125 PetriNetUnfolderBase]: For 754317/754329 co-relation queries the response was YES. [2024-06-27 18:23:45,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90469 conditions, 10922 events. 6507/10922 cut-off events. For 754317/754329 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 78576 event pairs, 1605 based on Foata normal form. 9/10616 useless extension candidates. Maximal degree in co-relation 90337. Up to 8966 conditions per place. [2024-06-27 18:23:45,521 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 380 selfloop transitions, 76 changer transitions 0/466 dead transitions. [2024-06-27 18:23:45,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 466 transitions, 6594 flow [2024-06-27 18:23:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:23:45,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:23:45,523 INFO L175 Difference]: Start difference. First operand has 297 places, 426 transitions, 5141 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:23:45,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 466 transitions, 6594 flow [2024-06-27 18:23:46,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 466 transitions, 6322 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:46,984 INFO L231 Difference]: Finished difference. Result has 298 places, 433 transitions, 5213 flow [2024-06-27 18:23:46,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5213, PETRI_PLACES=298, PETRI_TRANSITIONS=433} [2024-06-27 18:23:46,985 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 245 predicate places. [2024-06-27 18:23:46,985 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 433 transitions, 5213 flow [2024-06-27 18:23:46,985 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 18:23:46,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:46,985 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 18:23:46,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:23:46,985 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 18:23:46,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:46,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1798893149, now seen corresponding path program 10 times [2024-06-27 18:23:46,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:46,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660716690] [2024-06-27 18:23:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:46,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:47,702 INFO 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 18:23:47,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660716690] [2024-06-27 18:23:47,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660716690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:47,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:47,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:47,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112948555] [2024-06-27 18:23:47,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:47,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:47,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:47,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:47,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:47,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 433 transitions, 5213 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 18:23:47,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:47,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:47,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:49,877 INFO L124 PetriNetUnfolderBase]: 6529/11029 cut-off events. [2024-06-27 18:23:49,878 INFO L125 PetriNetUnfolderBase]: For 769534/769546 co-relation queries the response was YES. [2024-06-27 18:23:50,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91539 conditions, 11029 events. 6529/11029 cut-off events. For 769534/769546 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 80056 event pairs, 1600 based on Foata normal form. 9/10700 useless extension candidates. Maximal degree in co-relation 91406. Up to 8764 conditions per place. [2024-06-27 18:23:50,072 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 349 selfloop transitions, 118 changer transitions 0/477 dead transitions. [2024-06-27 18:23:50,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 477 transitions, 6916 flow [2024-06-27 18:23:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:23:50,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:23:50,074 INFO L175 Difference]: Start difference. First operand has 298 places, 433 transitions, 5213 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:23:50,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 477 transitions, 6916 flow [2024-06-27 18:23:52,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 477 transitions, 6746 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:52,019 INFO L231 Difference]: Finished difference. Result has 304 places, 444 transitions, 5629 flow [2024-06-27 18:23:52,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5043, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5629, PETRI_PLACES=304, PETRI_TRANSITIONS=444} [2024-06-27 18:23:52,020 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 251 predicate places. [2024-06-27 18:23:52,020 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 444 transitions, 5629 flow [2024-06-27 18:23:52,021 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 18:23:52,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:52,021 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 18:23:52,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:23:52,021 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 18:23:52,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2061996244, now seen corresponding path program 12 times [2024-06-27 18:23:52,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:52,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306344306] [2024-06-27 18:23:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:52,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:52,646 INFO 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 18:23:52,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306344306] [2024-06-27 18:23:52,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306344306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:52,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:52,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:52,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923625126] [2024-06-27 18:23:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:52,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:52,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:52,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:52,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 444 transitions, 5629 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 18:23:52,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:52,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:52,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:54,952 INFO L124 PetriNetUnfolderBase]: 6523/10929 cut-off events. [2024-06-27 18:23:54,952 INFO L125 PetriNetUnfolderBase]: For 789928/789937 co-relation queries the response was YES. [2024-06-27 18:23:55,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93421 conditions, 10929 events. 6523/10929 cut-off events. For 789928/789937 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 78432 event pairs, 1627 based on Foata normal form. 8/10621 useless extension candidates. Maximal degree in co-relation 93284. Up to 8629 conditions per place. [2024-06-27 18:23:55,130 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 357 selfloop transitions, 109 changer transitions 0/476 dead transitions. [2024-06-27 18:23:55,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 476 transitions, 6865 flow [2024-06-27 18:23:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:23:55,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:23:55,132 INFO L175 Difference]: Start difference. First operand has 304 places, 444 transitions, 5629 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:23:55,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 476 transitions, 6865 flow [2024-06-27 18:23:57,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 476 transitions, 6534 flow, removed 109 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:57,134 INFO L231 Difference]: Finished difference. Result has 308 places, 444 transitions, 5522 flow [2024-06-27 18:23:57,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5298, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5522, PETRI_PLACES=308, PETRI_TRANSITIONS=444} [2024-06-27 18:23:57,135 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 255 predicate places. [2024-06-27 18:23:57,135 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 444 transitions, 5522 flow [2024-06-27 18:23:57,135 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 18:23:57,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:57,135 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 18:23:57,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:23:57,136 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 18:23:57,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1248909859, now seen corresponding path program 11 times [2024-06-27 18:23:57,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:57,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012100060] [2024-06-27 18:23:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:58,019 INFO 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 18:23:58,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:58,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012100060] [2024-06-27 18:23:58,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012100060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:58,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:58,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971844944] [2024-06-27 18:23:58,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:58,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:58,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:58,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:58,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 444 transitions, 5522 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 18:23:58,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:58,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:58,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:00,488 INFO L124 PetriNetUnfolderBase]: 6517/10955 cut-off events. [2024-06-27 18:24:00,489 INFO L125 PetriNetUnfolderBase]: For 773637/773649 co-relation queries the response was YES. [2024-06-27 18:24:00,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92145 conditions, 10955 events. 6517/10955 cut-off events. For 773637/773649 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 78987 event pairs, 1585 based on Foata normal form. 10/10642 useless extension candidates. Maximal degree in co-relation 92007. Up to 9048 conditions per place. [2024-06-27 18:24:00,648 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 404 selfloop transitions, 63 changer transitions 0/477 dead transitions. [2024-06-27 18:24:00,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 477 transitions, 6736 flow [2024-06-27 18:24:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:00,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:24:00,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:24:00,650 INFO L175 Difference]: Start difference. First operand has 308 places, 444 transitions, 5522 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:24:00,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 477 transitions, 6736 flow [2024-06-27 18:24:02,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 477 transitions, 6259 flow, removed 86 selfloop flow, removed 8 redundant places. [2024-06-27 18:24:02,784 INFO L231 Difference]: Finished difference. Result has 308 places, 444 transitions, 5178 flow [2024-06-27 18:24:02,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5178, PETRI_PLACES=308, PETRI_TRANSITIONS=444} [2024-06-27 18:24:02,785 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 255 predicate places. [2024-06-27 18:24:02,785 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 444 transitions, 5178 flow [2024-06-27 18:24:02,785 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 18:24:02,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:02,786 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 18:24:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:24:02,786 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 18:24:02,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1804607069, now seen corresponding path program 12 times [2024-06-27 18:24:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673013841] [2024-06-27 18:24:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:03,647 INFO 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 18:24:03,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:03,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673013841] [2024-06-27 18:24:03,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673013841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:03,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:03,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:03,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429686572] [2024-06-27 18:24:03,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:03,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:03,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:03,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:03,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:03,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:24:03,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 444 transitions, 5178 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 18:24:03,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:03,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:24:03,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:06,136 INFO L124 PetriNetUnfolderBase]: 6514/10941 cut-off events. [2024-06-27 18:24:06,137 INFO L125 PetriNetUnfolderBase]: For 770801/770813 co-relation queries the response was YES. [2024-06-27 18:24:06,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90630 conditions, 10941 events. 6514/10941 cut-off events. For 770801/770813 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 78797 event pairs, 1587 based on Foata normal form. 9/10636 useless extension candidates. Maximal degree in co-relation 90492. Up to 8747 conditions per place. [2024-06-27 18:24:06,306 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 347 selfloop transitions, 119 changer transitions 0/476 dead transitions. [2024-06-27 18:24:06,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 476 transitions, 6337 flow [2024-06-27 18:24:06,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:24:06,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:24:06,309 INFO L175 Difference]: Start difference. First operand has 308 places, 444 transitions, 5178 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:24:06,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 476 transitions, 6337 flow [2024-06-27 18:24:08,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 476 transitions, 6148 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:08,287 INFO L231 Difference]: Finished difference. Result has 310 places, 445 transitions, 5252 flow [2024-06-27 18:24:08,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4999, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5252, PETRI_PLACES=310, PETRI_TRANSITIONS=445} [2024-06-27 18:24:08,288 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 257 predicate places. [2024-06-27 18:24:08,288 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 445 transitions, 5252 flow [2024-06-27 18:24:08,289 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 18:24:08,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:08,289 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 18:24:08,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:24:08,289 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 18:24:08,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2061873298, now seen corresponding path program 4 times [2024-06-27 18:24:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:08,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139632711] [2024-06-27 18:24:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:08,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:09,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:09,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139632711] [2024-06-27 18:24:09,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139632711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:09,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:09,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:09,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786723707] [2024-06-27 18:24:09,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:09,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:09,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:24:09,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 445 transitions, 5252 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 18:24:09,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:09,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:24:09,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:11,389 INFO L124 PetriNetUnfolderBase]: 6517/10979 cut-off events. [2024-06-27 18:24:11,389 INFO L125 PetriNetUnfolderBase]: For 776658/776658 co-relation queries the response was YES. [2024-06-27 18:24:11,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90968 conditions, 10979 events. 6517/10979 cut-off events. For 776658/776658 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 79362 event pairs, 1658 based on Foata normal form. 2/10650 useless extension candidates. Maximal degree in co-relation 90829. Up to 9207 conditions per place. [2024-06-27 18:24:11,619 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 424 selfloop transitions, 42 changer transitions 0/476 dead transitions. [2024-06-27 18:24:11,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 476 transitions, 6432 flow [2024-06-27 18:24:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:24:11,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-06-27 18:24:11,621 INFO L175 Difference]: Start difference. First operand has 310 places, 445 transitions, 5252 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:24:11,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 476 transitions, 6432 flow [2024-06-27 18:24:13,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 476 transitions, 6191 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:13,564 INFO L231 Difference]: Finished difference. Result has 313 places, 447 transitions, 5190 flow [2024-06-27 18:24:13,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5011, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5190, PETRI_PLACES=313, PETRI_TRANSITIONS=447} [2024-06-27 18:24:13,565 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 260 predicate places. [2024-06-27 18:24:13,565 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 447 transitions, 5190 flow [2024-06-27 18:24:13,565 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 18:24:13,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:13,566 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 18:24:13,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:24:13,566 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 18:24:13,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2141502424, now seen corresponding path program 5 times [2024-06-27 18:24:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070834871] [2024-06-27 18:24:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:13,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:14,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:14,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070834871] [2024-06-27 18:24:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070834871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:14,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:14,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:14,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895155963] [2024-06-27 18:24:14,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:14,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:14,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:14,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:14,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:24:14,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 447 transitions, 5190 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 18:24:14,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:14,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:24:14,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:17,074 INFO L124 PetriNetUnfolderBase]: 6615/10955 cut-off events. [2024-06-27 18:24:17,075 INFO L125 PetriNetUnfolderBase]: For 778324/778333 co-relation queries the response was YES. [2024-06-27 18:24:17,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91271 conditions, 10955 events. 6615/10955 cut-off events. For 778324/778333 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 77777 event pairs, 1760 based on Foata normal form. 7/10696 useless extension candidates. Maximal degree in co-relation 91132. Up to 9357 conditions per place. [2024-06-27 18:24:17,285 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 437 selfloop transitions, 71 changer transitions 0/518 dead transitions. [2024-06-27 18:24:17,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 518 transitions, 6762 flow [2024-06-27 18:24:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:24:17,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:24:17,287 INFO L175 Difference]: Start difference. First operand has 313 places, 447 transitions, 5190 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:24:17,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 518 transitions, 6762 flow [2024-06-27 18:24:19,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 518 transitions, 6523 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:19,048 INFO L231 Difference]: Finished difference. Result has 318 places, 479 transitions, 5604 flow [2024-06-27 18:24:19,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5604, PETRI_PLACES=318, PETRI_TRANSITIONS=479} [2024-06-27 18:24:19,049 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 265 predicate places. [2024-06-27 18:24:19,049 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 479 transitions, 5604 flow [2024-06-27 18:24:19,049 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 18:24:19,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:19,050 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 18:24:19,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:24:19,050 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 18:24:19,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1061054392, now seen corresponding path program 1 times [2024-06-27 18:24:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:19,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789554814] [2024-06-27 18:24:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:19,830 INFO 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 18:24:19,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:19,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789554814] [2024-06-27 18:24:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789554814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:19,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:19,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:19,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678057806] [2024-06-27 18:24:19,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:19,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:19,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:19,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:24:19,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 479 transitions, 5604 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 18:24:19,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:19,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:24:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:22,452 INFO L124 PetriNetUnfolderBase]: 6356/10668 cut-off events. [2024-06-27 18:24:22,452 INFO L125 PetriNetUnfolderBase]: For 793698/793757 co-relation queries the response was YES. [2024-06-27 18:24:22,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90246 conditions, 10668 events. 6356/10668 cut-off events. For 793698/793757 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 76967 event pairs, 1577 based on Foata normal form. 27/10431 useless extension candidates. Maximal degree in co-relation 90104. Up to 8890 conditions per place. [2024-06-27 18:24:22,625 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 464 selfloop transitions, 20 changer transitions 0/517 dead transitions. [2024-06-27 18:24:22,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 517 transitions, 6820 flow [2024-06-27 18:24:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:24:22,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:24:22,628 INFO L175 Difference]: Start difference. First operand has 318 places, 479 transitions, 5604 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:24:22,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 517 transitions, 6820 flow [2024-06-27 18:24:24,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 517 transitions, 6770 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:24,344 INFO L231 Difference]: Finished difference. Result has 324 places, 484 transitions, 5727 flow [2024-06-27 18:24:24,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5554, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5727, PETRI_PLACES=324, PETRI_TRANSITIONS=484} [2024-06-27 18:24:24,345 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 271 predicate places. [2024-06-27 18:24:24,346 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 484 transitions, 5727 flow [2024-06-27 18:24:24,346 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 18:24:24,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:24,346 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 18:24:24,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:24:24,346 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 18:24:24,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1485882548, now seen corresponding path program 2 times [2024-06-27 18:24:24,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:24,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545113198] [2024-06-27 18:24:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:24,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:25,131 INFO 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 18:24:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:25,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545113198] [2024-06-27 18:24:25,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545113198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:25,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:25,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875682522] [2024-06-27 18:24:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:25,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:25,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:25,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:25,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:24:25,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 484 transitions, 5727 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 18:24:25,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:25,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:24:25,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:27,714 INFO L124 PetriNetUnfolderBase]: 6376/10684 cut-off events. [2024-06-27 18:24:27,715 INFO L125 PetriNetUnfolderBase]: For 815070/815129 co-relation queries the response was YES. [2024-06-27 18:24:27,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91555 conditions, 10684 events. 6376/10684 cut-off events. For 815070/815129 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 76988 event pairs, 1650 based on Foata normal form. 27/10451 useless extension candidates. Maximal degree in co-relation 91410. Up to 8937 conditions per place. [2024-06-27 18:24:27,859 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 464 selfloop transitions, 20 changer transitions 0/517 dead transitions. [2024-06-27 18:24:27,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 517 transitions, 6929 flow [2024-06-27 18:24:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:24:27,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:24:27,861 INFO L175 Difference]: Start difference. First operand has 324 places, 484 transitions, 5727 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:24:27,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 517 transitions, 6929 flow [2024-06-27 18:24:29,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 517 transitions, 6798 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:29,491 INFO L231 Difference]: Finished difference. Result has 327 places, 486 transitions, 5729 flow [2024-06-27 18:24:29,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5596, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5729, PETRI_PLACES=327, PETRI_TRANSITIONS=486} [2024-06-27 18:24:29,492 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 274 predicate places. [2024-06-27 18:24:29,492 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 486 transitions, 5729 flow [2024-06-27 18:24:29,492 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 18:24:29,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:29,492 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 18:24:29,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:24:29,493 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 18:24:29,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1575920222, now seen corresponding path program 3 times [2024-06-27 18:24:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:29,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652222842] [2024-06-27 18:24:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:29,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:30,432 INFO 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 18:24:30,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:30,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652222842] [2024-06-27 18:24:30,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652222842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:30,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:30,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:30,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281988080] [2024-06-27 18:24:30,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:30,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:30,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:30,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:30,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:30,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:24:30,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 486 transitions, 5729 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 18:24:30,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:30,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:24:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:33,016 INFO L124 PetriNetUnfolderBase]: 6404/10734 cut-off events. [2024-06-27 18:24:33,016 INFO L125 PetriNetUnfolderBase]: For 833362/833421 co-relation queries the response was YES. [2024-06-27 18:24:33,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92105 conditions, 10734 events. 6404/10734 cut-off events. For 833362/833421 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 77506 event pairs, 1644 based on Foata normal form. 27/10500 useless extension candidates. Maximal degree in co-relation 91959. Up to 8979 conditions per place. [2024-06-27 18:24:33,252 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 469 selfloop transitions, 19 changer transitions 0/521 dead transitions. [2024-06-27 18:24:33,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 521 transitions, 7017 flow [2024-06-27 18:24:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:24:33,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:24:33,253 INFO L175 Difference]: Start difference. First operand has 327 places, 486 transitions, 5729 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:24:33,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 521 transitions, 7017 flow [2024-06-27 18:24:35,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 521 transitions, 6900 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:35,161 INFO L231 Difference]: Finished difference. Result has 330 places, 491 transitions, 5811 flow [2024-06-27 18:24:35,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5612, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5811, PETRI_PLACES=330, PETRI_TRANSITIONS=491} [2024-06-27 18:24:35,162 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 277 predicate places. [2024-06-27 18:24:35,162 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 491 transitions, 5811 flow [2024-06-27 18:24:35,162 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 18:24:35,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:35,162 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 18:24:35,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:24:35,163 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 18:24:35,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2055593268, now seen corresponding path program 4 times [2024-06-27 18:24:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:35,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786333309] [2024-06-27 18:24:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:36,205 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 18:24:36,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:36,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786333309] [2024-06-27 18:24:36,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786333309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:36,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:36,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:36,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079415217] [2024-06-27 18:24:36,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:36,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:36,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:36,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:36,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:36,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:24:36,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 491 transitions, 5811 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 18:24:36,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:36,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:24:36,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:38,900 INFO L124 PetriNetUnfolderBase]: 6427/10823 cut-off events. [2024-06-27 18:24:38,900 INFO L125 PetriNetUnfolderBase]: For 844910/844993 co-relation queries the response was YES. [2024-06-27 18:24:39,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92693 conditions, 10823 events. 6427/10823 cut-off events. For 844910/844993 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 78634 event pairs, 1571 based on Foata normal form. 26/10557 useless extension candidates. Maximal degree in co-relation 92545. Up to 8964 conditions per place. [2024-06-27 18:24:39,112 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 466 selfloop transitions, 26 changer transitions 0/525 dead transitions. [2024-06-27 18:24:39,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 525 transitions, 7128 flow [2024-06-27 18:24:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:24:39,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:24:39,114 INFO L175 Difference]: Start difference. First operand has 330 places, 491 transitions, 5811 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:24:39,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 525 transitions, 7128 flow [2024-06-27 18:24:41,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 525 transitions, 6977 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:41,369 INFO L231 Difference]: Finished difference. Result has 334 places, 496 transitions, 5878 flow [2024-06-27 18:24:41,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5660, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5878, PETRI_PLACES=334, PETRI_TRANSITIONS=496} [2024-06-27 18:24:41,369 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 281 predicate places. [2024-06-27 18:24:41,369 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 496 transitions, 5878 flow [2024-06-27 18:24:41,370 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 18:24:41,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:41,370 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 18:24:41,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:24:41,370 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:41,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash -657510875, now seen corresponding path program 1 times [2024-06-27 18:24:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:41,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590700295] [2024-06-27 18:24:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:41,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:41,438 INFO 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 18:24:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590700295] [2024-06-27 18:24:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590700295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:41,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:41,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:24:41,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291013510] [2024-06-27 18:24:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:41,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:24:41,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:24:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:24:41,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-06-27 18:24:41,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 496 transitions, 5878 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:41,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:41,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-06-27 18:24:41,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:43,818 INFO L124 PetriNetUnfolderBase]: 5866/9930 cut-off events. [2024-06-27 18:24:43,819 INFO L125 PetriNetUnfolderBase]: For 710399/712678 co-relation queries the response was YES. [2024-06-27 18:24:43,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79406 conditions, 9930 events. 5866/9930 cut-off events. For 710399/712678 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 75016 event pairs, 1116 based on Foata normal form. 187/9264 useless extension candidates. Maximal degree in co-relation 79257. Up to 2393 conditions per place. [2024-06-27 18:24:43,975 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 281 selfloop transitions, 49 changer transitions 152/775 dead transitions. [2024-06-27 18:24:43,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 775 transitions, 9807 flow [2024-06-27 18:24:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2024-06-27 18:24:43,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276595744680851 [2024-06-27 18:24:43,976 INFO L175 Difference]: Start difference. First operand has 334 places, 496 transitions, 5878 flow. Second operand 8 states and 236 transitions. [2024-06-27 18:24:43,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 775 transitions, 9807 flow [2024-06-27 18:24:45,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 775 transitions, 9434 flow, removed 152 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:45,878 INFO L231 Difference]: Finished difference. Result has 342 places, 499 transitions, 5920 flow [2024-06-27 18:24:45,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5707, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5920, PETRI_PLACES=342, PETRI_TRANSITIONS=499} [2024-06-27 18:24:45,879 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 289 predicate places. [2024-06-27 18:24:45,879 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 499 transitions, 5920 flow [2024-06-27 18:24:45,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:45,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:45,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:45,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:24:45,880 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:45,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1527094072, now seen corresponding path program 1 times [2024-06-27 18:24:45,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:45,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231464867] [2024-06-27 18:24:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:45,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:46,798 INFO 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 18:24:46,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:46,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231464867] [2024-06-27 18:24:46,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231464867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:46,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:46,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:46,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337535474] [2024-06-27 18:24:46,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:46,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:46,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:46,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:24:46,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 499 transitions, 5920 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 18:24:46,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:46,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:24:46,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:49,652 INFO L124 PetriNetUnfolderBase]: 6715/10901 cut-off events. [2024-06-27 18:24:49,652 INFO L125 PetriNetUnfolderBase]: For 851504/851530 co-relation queries the response was YES. [2024-06-27 18:24:49,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96538 conditions, 10901 events. 6715/10901 cut-off events. For 851504/851530 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 75224 event pairs, 1701 based on Foata normal form. 27/10889 useless extension candidates. Maximal degree in co-relation 96383. Up to 9546 conditions per place. [2024-06-27 18:24:49,827 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 492 selfloop transitions, 54 changer transitions 3/560 dead transitions. [2024-06-27 18:24:49,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 560 transitions, 7612 flow [2024-06-27 18:24:49,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:24:49,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:24:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 228 transitions. [2024-06-27 18:24:49,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-06-27 18:24:49,828 INFO L175 Difference]: Start difference. First operand has 342 places, 499 transitions, 5920 flow. Second operand 10 states and 228 transitions. [2024-06-27 18:24:49,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 560 transitions, 7612 flow [2024-06-27 18:24:52,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 560 transitions, 7608 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:52,255 INFO L231 Difference]: Finished difference. Result has 350 places, 521 transitions, 6512 flow [2024-06-27 18:24:52,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5916, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6512, PETRI_PLACES=350, PETRI_TRANSITIONS=521} [2024-06-27 18:24:52,256 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 297 predicate places. [2024-06-27 18:24:52,256 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 521 transitions, 6512 flow [2024-06-27 18:24:52,256 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 18:24:52,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:52,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:52,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:24:52,257 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:52,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:52,257 INFO L85 PathProgramCache]: Analyzing trace with hash 449531617, now seen corresponding path program 1 times [2024-06-27 18:24:52,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:52,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757447057] [2024-06-27 18:24:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:52,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:53,056 INFO 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 18:24:53,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:53,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757447057] [2024-06-27 18:24:53,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757447057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:53,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696983982] [2024-06-27 18:24:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:53,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:53,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:53,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:53,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:53,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:24:53,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 521 transitions, 6512 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 18:24:53,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:53,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:24:53,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:55,563 INFO L124 PetriNetUnfolderBase]: 6283/10078 cut-off events. [2024-06-27 18:24:55,563 INFO L125 PetriNetUnfolderBase]: For 865798/865828 co-relation queries the response was YES. [2024-06-27 18:24:55,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93207 conditions, 10078 events. 6283/10078 cut-off events. For 865798/865828 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 67684 event pairs, 1389 based on Foata normal form. 32/10075 useless extension candidates. Maximal degree in co-relation 93048. Up to 8868 conditions per place. [2024-06-27 18:24:55,770 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 497 selfloop transitions, 57 changer transitions 0/565 dead transitions. [2024-06-27 18:24:55,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 565 transitions, 8014 flow [2024-06-27 18:24:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:24:55,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 18:24:55,772 INFO L175 Difference]: Start difference. First operand has 350 places, 521 transitions, 6512 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:24:55,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 565 transitions, 8014 flow [2024-06-27 18:24:58,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 565 transitions, 7691 flow, removed 92 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:58,704 INFO L231 Difference]: Finished difference. Result has 353 places, 525 transitions, 6486 flow [2024-06-27 18:24:58,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6189, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6486, PETRI_PLACES=353, PETRI_TRANSITIONS=525} [2024-06-27 18:24:58,705 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 300 predicate places. [2024-06-27 18:24:58,705 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 525 transitions, 6486 flow [2024-06-27 18:24:58,705 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 18:24:58,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:58,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:58,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:24:58,705 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:58,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 627585697, now seen corresponding path program 2 times [2024-06-27 18:24:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:58,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880056426] [2024-06-27 18:24:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:58,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:59,496 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 18:24:59,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:59,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880056426] [2024-06-27 18:24:59,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880056426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:59,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:59,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959925102] [2024-06-27 18:24:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:59,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:59,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:59,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:59,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:24:59,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 525 transitions, 6486 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 18:24:59,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:59,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:24:59,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:02,117 INFO L124 PetriNetUnfolderBase]: 6317/10123 cut-off events. [2024-06-27 18:25:02,118 INFO L125 PetriNetUnfolderBase]: For 899101/899133 co-relation queries the response was YES. [2024-06-27 18:25:02,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94333 conditions, 10123 events. 6317/10123 cut-off events. For 899101/899133 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 67841 event pairs, 1469 based on Foata normal form. 34/10017 useless extension candidates. Maximal degree in co-relation 94175. Up to 8872 conditions per place. [2024-06-27 18:25:02,317 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 500 selfloop transitions, 63 changer transitions 0/574 dead transitions. [2024-06-27 18:25:02,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 574 transitions, 8096 flow [2024-06-27 18:25:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 18:25:02,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:25:02,318 INFO L175 Difference]: Start difference. First operand has 353 places, 525 transitions, 6486 flow. Second operand 10 states and 235 transitions. [2024-06-27 18:25:02,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 574 transitions, 8096 flow [2024-06-27 18:25:04,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 574 transitions, 7827 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:04,637 INFO L231 Difference]: Finished difference. Result has 356 places, 529 transitions, 6534 flow [2024-06-27 18:25:04,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6217, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6534, PETRI_PLACES=356, PETRI_TRANSITIONS=529} [2024-06-27 18:25:04,638 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 303 predicate places. [2024-06-27 18:25:04,639 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 529 transitions, 6534 flow [2024-06-27 18:25:04,639 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 18:25:04,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:04,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:04,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:25:04,639 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:04,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash 823181919, now seen corresponding path program 3 times [2024-06-27 18:25:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:04,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273599422] [2024-06-27 18:25:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:04,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:05,787 INFO 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 18:25:05,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273599422] [2024-06-27 18:25:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273599422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:05,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:05,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675809388] [2024-06-27 18:25:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:05,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:05,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:05,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:05,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 529 transitions, 6534 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 18:25:05,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:05,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:05,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:08,341 INFO L124 PetriNetUnfolderBase]: 6351/10186 cut-off events. [2024-06-27 18:25:08,342 INFO L125 PetriNetUnfolderBase]: For 923614/923644 co-relation queries the response was YES. [2024-06-27 18:25:08,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95527 conditions, 10186 events. 6351/10186 cut-off events. For 923614/923644 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 68457 event pairs, 1469 based on Foata normal form. 31/10075 useless extension candidates. Maximal degree in co-relation 95368. Up to 8877 conditions per place. [2024-06-27 18:25:08,515 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 497 selfloop transitions, 72 changer transitions 0/580 dead transitions. [2024-06-27 18:25:08,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 580 transitions, 8079 flow [2024-06-27 18:25:08,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-27 18:25:08,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-27 18:25:08,516 INFO L175 Difference]: Start difference. First operand has 356 places, 529 transitions, 6534 flow. Second operand 10 states and 236 transitions. [2024-06-27 18:25:08,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 580 transitions, 8079 flow [2024-06-27 18:25:11,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 580 transitions, 7790 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:11,086 INFO L231 Difference]: Finished difference. Result has 359 places, 535 transitions, 6556 flow [2024-06-27 18:25:11,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6245, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6556, PETRI_PLACES=359, PETRI_TRANSITIONS=535} [2024-06-27 18:25:11,087 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 306 predicate places. [2024-06-27 18:25:11,087 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 535 transitions, 6556 flow [2024-06-27 18:25:11,087 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 18:25:11,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:11,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:11,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:25:11,087 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:11,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:11,088 INFO L85 PathProgramCache]: Analyzing trace with hash -70838834, now seen corresponding path program 2 times [2024-06-27 18:25:11,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:11,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432393532] [2024-06-27 18:25:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:11,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:11,855 INFO 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 18:25:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:11,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432393532] [2024-06-27 18:25:11,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432393532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:11,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:11,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:11,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578207854] [2024-06-27 18:25:11,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:11,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:11,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:11,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:11,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 535 transitions, 6556 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 18:25:11,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:11,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:11,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:14,812 INFO L124 PetriNetUnfolderBase]: 6383/10237 cut-off events. [2024-06-27 18:25:14,812 INFO L125 PetriNetUnfolderBase]: For 946564/946599 co-relation queries the response was YES. [2024-06-27 18:25:14,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96594 conditions, 10237 events. 6383/10237 cut-off events. For 946564/946599 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 68896 event pairs, 1412 based on Foata normal form. 29/10122 useless extension candidates. Maximal degree in co-relation 96433. Up to 8707 conditions per place. [2024-06-27 18:25:15,000 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 457 selfloop transitions, 131 changer transitions 0/599 dead transitions. [2024-06-27 18:25:15,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 599 transitions, 8358 flow [2024-06-27 18:25:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:25:15,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 18:25:15,002 INFO L175 Difference]: Start difference. First operand has 359 places, 535 transitions, 6556 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:25:15,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 599 transitions, 8358 flow [2024-06-27 18:25:18,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 599 transitions, 8120 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:18,269 INFO L231 Difference]: Finished difference. Result has 363 places, 560 transitions, 7198 flow [2024-06-27 18:25:18,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7198, PETRI_PLACES=363, PETRI_TRANSITIONS=560} [2024-06-27 18:25:18,270 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 310 predicate places. [2024-06-27 18:25:18,270 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 560 transitions, 7198 flow [2024-06-27 18:25:18,270 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 18:25:18,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:18,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:25:18,271 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:18,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash -516686413, now seen corresponding path program 1 times [2024-06-27 18:25:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:18,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718279109] [2024-06-27 18:25:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:19,503 INFO 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 18:25:19,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:19,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718279109] [2024-06-27 18:25:19,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718279109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:19,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:19,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:19,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713415703] [2024-06-27 18:25:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:19,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:19,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:19,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:19,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:19,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 560 transitions, 7198 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 18:25:19,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:19,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:19,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:22,899 INFO L124 PetriNetUnfolderBase]: 6400/10273 cut-off events. [2024-06-27 18:25:22,899 INFO L125 PetriNetUnfolderBase]: For 982271/982310 co-relation queries the response was YES. [2024-06-27 18:25:23,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98549 conditions, 10273 events. 6400/10273 cut-off events. For 982271/982310 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 69278 event pairs, 1411 based on Foata normal form. 33/10162 useless extension candidates. Maximal degree in co-relation 98385. Up to 8974 conditions per place. [2024-06-27 18:25:23,071 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 503 selfloop transitions, 88 changer transitions 0/602 dead transitions. [2024-06-27 18:25:23,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 602 transitions, 8716 flow [2024-06-27 18:25:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:25:23,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 18:25:23,073 INFO L175 Difference]: Start difference. First operand has 363 places, 560 transitions, 7198 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:25:23,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 602 transitions, 8716 flow [2024-06-27 18:25:26,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 602 transitions, 8402 flow, removed 132 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:26,789 INFO L231 Difference]: Finished difference. Result has 369 places, 563 transitions, 7210 flow [2024-06-27 18:25:26,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6884, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7210, PETRI_PLACES=369, PETRI_TRANSITIONS=563} [2024-06-27 18:25:26,798 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 316 predicate places. [2024-06-27 18:25:26,798 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 563 transitions, 7210 flow [2024-06-27 18:25:26,798 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 18:25:26,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:26,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:26,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:25:26,799 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:26,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:26,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1936837714, now seen corresponding path program 3 times [2024-06-27 18:25:26,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:26,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477103277] [2024-06-27 18:25:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:26,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:27,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:27,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477103277] [2024-06-27 18:25:27,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477103277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:27,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:27,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:27,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929244843] [2024-06-27 18:25:27,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:27,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:27,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:27,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:27,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:28,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:28,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 563 transitions, 7210 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 18:25:28,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:28,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:28,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:31,290 INFO L124 PetriNetUnfolderBase]: 6433/10316 cut-off events. [2024-06-27 18:25:31,291 INFO L125 PetriNetUnfolderBase]: For 1019482/1019520 co-relation queries the response was YES. [2024-06-27 18:25:31,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100507 conditions, 10316 events. 6433/10316 cut-off events. For 1019482/1019520 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 69471 event pairs, 1410 based on Foata normal form. 32/10203 useless extension candidates. Maximal degree in co-relation 100341. Up to 8633 conditions per place. [2024-06-27 18:25:31,479 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 428 selfloop transitions, 170 changer transitions 0/609 dead transitions. [2024-06-27 18:25:31,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 609 transitions, 9206 flow [2024-06-27 18:25:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:25:31,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:25:31,480 INFO L175 Difference]: Start difference. First operand has 369 places, 563 transitions, 7210 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:25:31,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 609 transitions, 9206 flow [2024-06-27 18:25:34,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 609 transitions, 8906 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:34,670 INFO L231 Difference]: Finished difference. Result has 372 places, 570 transitions, 7716 flow [2024-06-27 18:25:34,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6910, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7716, PETRI_PLACES=372, PETRI_TRANSITIONS=570} [2024-06-27 18:25:34,671 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 319 predicate places. [2024-06-27 18:25:34,671 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 570 transitions, 7716 flow [2024-06-27 18:25:34,671 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 18:25:34,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:34,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:34,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:25:34,672 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:34,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1942499554, now seen corresponding path program 4 times [2024-06-27 18:25:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:34,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128520122] [2024-06-27 18:25:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:35,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:35,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128520122] [2024-06-27 18:25:35,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128520122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:35,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:35,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:35,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128086592] [2024-06-27 18:25:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:35,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:35,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:35,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:35,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:35,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:35,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 570 transitions, 7716 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 18:25:35,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:35,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:35,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:38,999 INFO L124 PetriNetUnfolderBase]: 6501/10427 cut-off events. [2024-06-27 18:25:38,999 INFO L125 PetriNetUnfolderBase]: For 1058679/1058716 co-relation queries the response was YES. [2024-06-27 18:25:39,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102675 conditions, 10427 events. 6501/10427 cut-off events. For 1058679/1058716 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 70246 event pairs, 1470 based on Foata normal form. 31/10303 useless extension candidates. Maximal degree in co-relation 102507. Up to 8844 conditions per place. [2024-06-27 18:25:39,191 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 476 selfloop transitions, 137 changer transitions 0/624 dead transitions. [2024-06-27 18:25:39,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 624 transitions, 9460 flow [2024-06-27 18:25:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-27 18:25:39,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-27 18:25:39,193 INFO L175 Difference]: Start difference. First operand has 372 places, 570 transitions, 7716 flow. Second operand 10 states and 234 transitions. [2024-06-27 18:25:39,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 624 transitions, 9460 flow [2024-06-27 18:25:42,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 624 transitions, 9040 flow, removed 116 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:42,834 INFO L231 Difference]: Finished difference. Result has 378 places, 585 transitions, 7940 flow [2024-06-27 18:25:42,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7940, PETRI_PLACES=378, PETRI_TRANSITIONS=585} [2024-06-27 18:25:42,835 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 325 predicate places. [2024-06-27 18:25:42,835 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 585 transitions, 7940 flow [2024-06-27 18:25:42,835 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 18:25:42,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:42,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:42,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:25:42,835 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:42,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:42,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1040333275, now seen corresponding path program 4 times [2024-06-27 18:25:42,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:42,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063108121] [2024-06-27 18:25:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:42,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:43,667 INFO 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 18:25:43,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:43,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063108121] [2024-06-27 18:25:43,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063108121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:43,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:43,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:43,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399158131] [2024-06-27 18:25:43,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:43,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:43,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:43,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:43,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:43,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 585 transitions, 7940 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 18:25:43,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:43,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:43,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:46,677 INFO L124 PetriNetUnfolderBase]: 6535/10478 cut-off events. [2024-06-27 18:25:46,678 INFO L125 PetriNetUnfolderBase]: For 1073495/1073532 co-relation queries the response was YES. [2024-06-27 18:25:46,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103677 conditions, 10478 events. 6535/10478 cut-off events. For 1073495/1073532 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 70599 event pairs, 1402 based on Foata normal form. 36/10369 useless extension candidates. Maximal degree in co-relation 103506. Up to 9097 conditions per place. [2024-06-27 18:25:46,865 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 528 selfloop transitions, 90 changer transitions 0/629 dead transitions. [2024-06-27 18:25:46,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 629 transitions, 9624 flow [2024-06-27 18:25:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 18:25:46,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-27 18:25:46,866 INFO L175 Difference]: Start difference. First operand has 378 places, 585 transitions, 7940 flow. Second operand 9 states and 214 transitions. [2024-06-27 18:25:46,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 629 transitions, 9624 flow [2024-06-27 18:25:50,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 629 transitions, 9232 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:50,577 INFO L231 Difference]: Finished difference. Result has 382 places, 589 transitions, 7945 flow [2024-06-27 18:25:50,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7548, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7945, PETRI_PLACES=382, PETRI_TRANSITIONS=589} [2024-06-27 18:25:50,578 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 329 predicate places. [2024-06-27 18:25:50,578 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 589 transitions, 7945 flow [2024-06-27 18:25:50,578 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 18:25:50,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:50,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:50,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:25:50,579 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:50,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:50,587 INFO L85 PathProgramCache]: Analyzing trace with hash -262126149, now seen corresponding path program 5 times [2024-06-27 18:25:50,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:50,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123199639] [2024-06-27 18:25:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:50,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:51,583 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 18:25:51,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:51,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123199639] [2024-06-27 18:25:51,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123199639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:51,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:51,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:51,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857890536] [2024-06-27 18:25:51,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:51,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:51,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:51,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:51,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:51,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:51,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 589 transitions, 7945 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 18:25:51,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:51,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:51,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:54,781 INFO L124 PetriNetUnfolderBase]: 6569/10536 cut-off events. [2024-06-27 18:25:54,782 INFO L125 PetriNetUnfolderBase]: For 1113376/1113415 co-relation queries the response was YES. [2024-06-27 18:25:54,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105397 conditions, 10536 events. 6569/10536 cut-off events. For 1113376/1113415 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 71167 event pairs, 1473 based on Foata normal form. 38/10427 useless extension candidates. Maximal degree in co-relation 105225. Up to 9062 conditions per place. [2024-06-27 18:25:55,054 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 526 selfloop transitions, 95 changer transitions 0/632 dead transitions. [2024-06-27 18:25:55,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 632 transitions, 9711 flow [2024-06-27 18:25:55,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:25:55,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 18:25:55,057 INFO L175 Difference]: Start difference. First operand has 382 places, 589 transitions, 7945 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:25:55,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 632 transitions, 9711 flow [2024-06-27 18:25:58,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 632 transitions, 9342 flow, removed 97 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:58,577 INFO L231 Difference]: Finished difference. Result has 384 places, 593 transitions, 7991 flow [2024-06-27 18:25:58,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7576, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7991, PETRI_PLACES=384, PETRI_TRANSITIONS=593} [2024-06-27 18:25:58,578 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 331 predicate places. [2024-06-27 18:25:58,578 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 593 transitions, 7991 flow [2024-06-27 18:25:58,578 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 18:25:58,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:58,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:58,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:25:58,579 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:58,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash -262113625, now seen corresponding path program 1 times [2024-06-27 18:25:58,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:58,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998871628] [2024-06-27 18:25:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:58,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:59,374 INFO 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 18:25:59,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:59,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998871628] [2024-06-27 18:25:59,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998871628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:59,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:59,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456732772] [2024-06-27 18:25:59,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:59,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:59,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:25:59,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 593 transitions, 7991 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 18:25:59,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:59,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:25:59,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:02,350 INFO L124 PetriNetUnfolderBase]: 6637/10637 cut-off events. [2024-06-27 18:26:02,350 INFO L125 PetriNetUnfolderBase]: For 1165753/1165794 co-relation queries the response was YES. [2024-06-27 18:26:02,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107577 conditions, 10637 events. 6637/10637 cut-off events. For 1165753/1165794 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 71829 event pairs, 1402 based on Foata normal form. 42/10531 useless extension candidates. Maximal degree in co-relation 107404. Up to 9344 conditions per place. [2024-06-27 18:26:02,570 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 568 selfloop transitions, 58 changer transitions 0/637 dead transitions. [2024-06-27 18:26:02,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 637 transitions, 9717 flow [2024-06-27 18:26:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:26:02,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 18:26:02,572 INFO L175 Difference]: Start difference. First operand has 384 places, 593 transitions, 7991 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:26:02,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 637 transitions, 9717 flow [2024-06-27 18:26:06,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 637 transitions, 9330 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:06,585 INFO L231 Difference]: Finished difference. Result has 386 places, 597 transitions, 7929 flow [2024-06-27 18:26:06,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7604, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7929, PETRI_PLACES=386, PETRI_TRANSITIONS=597} [2024-06-27 18:26:06,588 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 333 predicate places. [2024-06-27 18:26:06,588 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 597 transitions, 7929 flow [2024-06-27 18:26:06,589 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 18:26:06,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:06,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:06,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:26:06,589 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:06,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash -262114059, now seen corresponding path program 6 times [2024-06-27 18:26:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428538200] [2024-06-27 18:26:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:07,718 INFO 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 18:26:07,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428538200] [2024-06-27 18:26:07,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428538200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:07,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:07,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:07,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849184583] [2024-06-27 18:26:07,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:07,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:07,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:07,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:07,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:07,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:26:07,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 597 transitions, 7929 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 18:26:07,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:07,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:26:07,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:10,975 INFO L124 PetriNetUnfolderBase]: 6671/10710 cut-off events. [2024-06-27 18:26:10,976 INFO L125 PetriNetUnfolderBase]: For 1189489/1189526 co-relation queries the response was YES. [2024-06-27 18:26:11,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108808 conditions, 10710 events. 6671/10710 cut-off events. For 1189489/1189526 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 72466 event pairs, 1401 based on Foata normal form. 36/10592 useless extension candidates. Maximal degree in co-relation 108634. Up to 9118 conditions per place. [2024-06-27 18:26:11,191 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 519 selfloop transitions, 110 changer transitions 0/640 dead transitions. [2024-06-27 18:26:11,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 640 transitions, 9683 flow [2024-06-27 18:26:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:26:11,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-27 18:26:11,193 INFO L175 Difference]: Start difference. First operand has 386 places, 597 transitions, 7929 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:26:11,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 640 transitions, 9683 flow [2024-06-27 18:26:14,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 640 transitions, 9386 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:14,991 INFO L231 Difference]: Finished difference. Result has 388 places, 601 transitions, 8089 flow [2024-06-27 18:26:14,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7632, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8089, PETRI_PLACES=388, PETRI_TRANSITIONS=601} [2024-06-27 18:26:14,992 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 335 predicate places. [2024-06-27 18:26:14,992 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 601 transitions, 8089 flow [2024-06-27 18:26:14,992 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 18:26:14,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:14,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:14,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:26:14,993 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:14,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:14,993 INFO L85 PathProgramCache]: Analyzing trace with hash -66784561, now seen corresponding path program 2 times [2024-06-27 18:26:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:14,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585203822] [2024-06-27 18:26:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:14,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:16,156 INFO 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 18:26:16,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:16,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585203822] [2024-06-27 18:26:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585203822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:16,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:16,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742346415] [2024-06-27 18:26:16,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:16,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:16,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:16,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:16,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:26:16,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 601 transitions, 8089 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 18:26:16,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:16,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:26:16,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:19,807 INFO L124 PetriNetUnfolderBase]: 6688/10738 cut-off events. [2024-06-27 18:26:19,807 INFO L125 PetriNetUnfolderBase]: For 1213923/1213964 co-relation queries the response was YES. [2024-06-27 18:26:19,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109580 conditions, 10738 events. 6688/10738 cut-off events. For 1213923/1213964 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 72765 event pairs, 1490 based on Foata normal form. 39/10624 useless extension candidates. Maximal degree in co-relation 109405. Up to 9446 conditions per place. [2024-06-27 18:26:20,007 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 575 selfloop transitions, 57 changer transitions 0/643 dead transitions. [2024-06-27 18:26:20,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 643 transitions, 9791 flow [2024-06-27 18:26:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:20,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:26:20,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 18:26:20,008 INFO L175 Difference]: Start difference. First operand has 388 places, 601 transitions, 8089 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:26:20,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 643 transitions, 9791 flow [2024-06-27 18:26:23,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 643 transitions, 9362 flow, removed 107 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:23,570 INFO L231 Difference]: Finished difference. Result has 390 places, 604 transitions, 7948 flow [2024-06-27 18:26:23,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7660, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7948, PETRI_PLACES=390, PETRI_TRANSITIONS=604} [2024-06-27 18:26:23,571 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 337 predicate places. [2024-06-27 18:26:23,571 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 604 transitions, 7948 flow [2024-06-27 18:26:23,571 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 18:26:23,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:23,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:23,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:26:23,572 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:23,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash 971166439, now seen corresponding path program 2 times [2024-06-27 18:26:23,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:23,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917922311] [2024-06-27 18:26:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:23,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:24,643 INFO 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 18:26:24,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:24,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917922311] [2024-06-27 18:26:24,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917922311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:24,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:24,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998110100] [2024-06-27 18:26:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:24,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:24,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:24,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:24,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:26:24,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 604 transitions, 7948 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 18:26:24,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:24,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:26:24,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand