./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix001.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix001.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix001.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix001.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:09:15,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:09:15,287 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:09:15,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:09:15,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:09:15,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:09:15,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:09:15,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:09:15,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:09:15,311 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:09:15,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:09:15,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:09:15,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:09:15,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:09:15,313 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:09:15,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:09:15,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:09:15,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:09:15,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:09:15,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:09:15,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:09:15,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:09:15,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:09:15,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:09:15,316 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:09:15,316 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:09:15,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:09:15,317 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:09:15,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:09:15,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:09:15,319 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:09:15,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:09:15,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:09:15,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:09:15,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:09:15,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:09:15,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:09:15,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:09:15,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:09:15,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:09:15,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:09:15,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:09:15,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:09:15,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:09:15,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:09:15,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:09:15,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:09:15,597 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:09:15,597 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:09:15,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix001.oepc.yml/witness.yml [2024-06-27 18:09:15,850 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:09:15,851 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:09:15,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix001.oepc.i [2024-06-27 18:09:16,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:09:17,270 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:09:17,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix001.oepc.i [2024-06-27 18:09:17,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a6803dc/0bce6bcbb97b4500b983d699dbbedac1/FLAG10831705a [2024-06-27 18:09:17,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a6803dc/0bce6bcbb97b4500b983d699dbbedac1 [2024-06-27 18:09:17,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:09:17,306 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:09:17,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:09:17,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:09:17,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:09:17,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (1/2) ... [2024-06-27 18:09:17,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a9278e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (1/2) ... [2024-06-27 18:09:17,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f33a6be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:09:17" (2/2) ... [2024-06-27 18:09:17,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a9278e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:09:17" (2/2) ... [2024-06-27 18:09:17,317 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:09:17,421 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:09:17,422 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] (((((((((((((((((((((! multithreaded || z$r_buff1_thd0 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:09:17,422 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || z$r_buff1_thd0 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:09:17,423 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || z$r_buff1_thd0 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:09:17,423 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:09:17,423 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-06-27 18:09:17,470 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:09:17,656 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/mix001.oepc.i[988,1001] [2024-06-27 18:09:17,915 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:09:17,933 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:09:17,977 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/mix001.oepc.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:09:18,067 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:09:18,106 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:09:18,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18 WrapperNode [2024-06-27 18:09:18,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:09:18,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:09:18,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:09:18,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:09:18,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,175 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-06-27 18:09:18,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:09:18,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:09:18,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:09:18,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:09:18,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,191 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,210 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 18:09:18,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:09:18,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:09:18,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:09:18,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:09:18,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (1/1) ... [2024-06-27 18:09:18,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:09:18,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:09:18,285 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 18:09:18,316 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 18:09:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:09:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:09:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:09:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:09:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:09:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:09:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:09:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:09:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:09:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:09:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:09:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:09:18,336 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 18:09:18,466 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:09:18,468 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:09:18,859 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:09:18,859 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:09:19,113 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:09:19,113 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:09:19,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:09:19 BoogieIcfgContainer [2024-06-27 18:09:19,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:09:19,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:09:19,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:09:19,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:09:19,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (1/4) ... [2024-06-27 18:09:19,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23589d9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:09:19, skipping insertion in model container [2024-06-27 18:09:19,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:09:17" (2/4) ... [2024-06-27 18:09:19,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23589d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:09:19, skipping insertion in model container [2024-06-27 18:09:19,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:18" (3/4) ... [2024-06-27 18:09:19,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23589d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:09:19, skipping insertion in model container [2024-06-27 18:09:19,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:09:19" (4/4) ... [2024-06-27 18:09:19,123 INFO L112 eAbstractionObserver]: Analyzing ICFG mix001.oepc.i [2024-06-27 18:09:19,140 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:09:19,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:09:19,140 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:09:19,190 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:09:19,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:09:19,265 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 18:09:19,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:09:19,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-27 18:09:19,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:09:19,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-27 18:09:19,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:09:19,290 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;@467a5480, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:09:19,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:09:19,297 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:09:19,297 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:09:19,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:09:19,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:19,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:09:19,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:19,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash 383501507, now seen corresponding path program 1 times [2024-06-27 18:09:19,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:19,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673113806] [2024-06-27 18:09:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:19,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:20,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673113806] [2024-06-27 18:09:20,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673113806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:20,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:20,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:09:20,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054489111] [2024-06-27 18:09:20,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:20,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:09:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:20,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:09:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:09:20,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 18:09:20,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 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 18:09:20,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:20,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 18:09:20,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:21,348 INFO L124 PetriNetUnfolderBase]: 3699/6169 cut-off events. [2024-06-27 18:09:21,348 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-27 18:09:21,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11595 conditions, 6169 events. 3699/6169 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 41379 event pairs, 2881 based on Foata normal form. 176/5837 useless extension candidates. Maximal degree in co-relation 11583. Up to 5323 conditions per place. [2024-06-27 18:09:21,394 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-27 18:09:21,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 227 flow [2024-06-27 18:09:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:09:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:09:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 18:09:21,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2024-06-27 18:09:21,410 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 102 transitions. [2024-06-27 18:09:21,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 227 flow [2024-06-27 18:09:21,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:21,420 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-27 18:09:21,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 18:09:21,426 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 18:09:21,427 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-27 18:09:21,427 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 18:09:21,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:21,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:09:21,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:09:21,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:21,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash 383501645, now seen corresponding path program 1 times [2024-06-27 18:09:21,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:21,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734689037] [2024-06-27 18:09:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:21,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734689037] [2024-06-27 18:09:21,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734689037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:21,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:21,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:09:21,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820396600] [2024-06-27 18:09:21,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:09:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:09:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:09:21,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 49 [2024-06-27 18:09:21,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:21,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:21,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 49 [2024-06-27 18:09:21,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:22,004 INFO L124 PetriNetUnfolderBase]: 1277/2424 cut-off events. [2024-06-27 18:09:22,004 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:09:22,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 2424 events. 1277/2424 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16907 event pairs, 867 based on Foata normal form. 0/2238 useless extension candidates. Maximal degree in co-relation 4603. Up to 1696 conditions per place. [2024-06-27 18:09:22,023 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 36 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-06-27 18:09:22,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 238 flow [2024-06-27 18:09:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:09:22,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:09:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-06-27 18:09:22,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7755102040816326 [2024-06-27 18:09:22,027 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 3 states and 114 transitions. [2024-06-27 18:09:22,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 238 flow [2024-06-27 18:09:22,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:22,030 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 126 flow [2024-06-27 18:09:22,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 18:09:22,031 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 18:09:22,031 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 126 flow [2024-06-27 18:09:22,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:22,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:22,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:22,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:09:22,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:22,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash -822214015, now seen corresponding path program 1 times [2024-06-27 18:09:22,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:22,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385186754] [2024-06-27 18:09:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:22,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:22,714 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 18:09:22,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:22,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385186754] [2024-06-27 18:09:22,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385186754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:22,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:22,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:09:22,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236457346] [2024-06-27 18:09:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:22,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:09:22,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:09:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:09:22,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 18:09:22,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:22,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:22,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 18:09:22,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:23,439 INFO L124 PetriNetUnfolderBase]: 3141/5172 cut-off events. [2024-06-27 18:09:23,439 INFO L125 PetriNetUnfolderBase]: For 1207/1207 co-relation queries the response was YES. [2024-06-27 18:09:23,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10953 conditions, 5172 events. 3141/5172 cut-off events. For 1207/1207 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 33059 event pairs, 2003 based on Foata normal form. 3/4973 useless extension candidates. Maximal degree in co-relation 10940. Up to 4514 conditions per place. [2024-06-27 18:09:23,466 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 49 selfloop transitions, 8 changer transitions 2/73 dead transitions. [2024-06-27 18:09:23,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 316 flow [2024-06-27 18:09:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:09:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:09:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 18:09:23,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6479591836734694 [2024-06-27 18:09:23,468 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 126 flow. Second operand 4 states and 127 transitions. [2024-06-27 18:09:23,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 316 flow [2024-06-27 18:09:23,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:23,471 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 187 flow [2024-06-27 18:09:23,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 18:09:23,472 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-27 18:09:23,472 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 187 flow [2024-06-27 18:09:23,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:23,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:23,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:23,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:09:23,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:23,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash 281170190, now seen corresponding path program 1 times [2024-06-27 18:09:23,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:23,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368707695] [2024-06-27 18:09:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:23,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:24,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368707695] [2024-06-27 18:09:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368707695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:24,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:09:24,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024058119] [2024-06-27 18:09:24,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:09:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:09:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:09:24,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 18:09:24,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:24,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:24,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 18:09:24,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:25,231 INFO L124 PetriNetUnfolderBase]: 2693/4631 cut-off events. [2024-06-27 18:09:25,232 INFO L125 PetriNetUnfolderBase]: For 2049/2049 co-relation queries the response was YES. [2024-06-27 18:09:25,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10516 conditions, 4631 events. 2693/4631 cut-off events. For 2049/2049 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 30168 event pairs, 1717 based on Foata normal form. 3/4472 useless extension candidates. Maximal degree in co-relation 10501. Up to 3864 conditions per place. [2024-06-27 18:09:25,258 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 59 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-06-27 18:09:25,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 413 flow [2024-06-27 18:09:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:25,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-27 18:09:25,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-06-27 18:09:25,260 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 187 flow. Second operand 5 states and 155 transitions. [2024-06-27 18:09:25,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 413 flow [2024-06-27 18:09:25,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 402 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:25,266 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 228 flow [2024-06-27 18:09:25,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-27 18:09:25,267 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-06-27 18:09:25,268 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 228 flow [2024-06-27 18:09:25,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:25,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:25,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:25,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:09:25,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:25,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:25,277 INFO L85 PathProgramCache]: Analyzing trace with hash -378357907, now seen corresponding path program 1 times [2024-06-27 18:09:25,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:25,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160262060] [2024-06-27 18:09:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:25,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:27,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:27,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160262060] [2024-06-27 18:09:27,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160262060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:27,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:27,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496164828] [2024-06-27 18:09:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:27,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:27,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:27,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:09:27,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:27,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:27,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:09:27,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:28,181 INFO L124 PetriNetUnfolderBase]: 3175/5338 cut-off events. [2024-06-27 18:09:28,181 INFO L125 PetriNetUnfolderBase]: For 4247/4247 co-relation queries the response was YES. [2024-06-27 18:09:28,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13093 conditions, 5338 events. 3175/5338 cut-off events. For 4247/4247 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 34659 event pairs, 1351 based on Foata normal form. 3/5141 useless extension candidates. Maximal degree in co-relation 13076. Up to 4506 conditions per place. [2024-06-27 18:09:28,215 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 80 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-06-27 18:09:28,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 584 flow [2024-06-27 18:09:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-27 18:09:28,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60932944606414 [2024-06-27 18:09:28,218 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 228 flow. Second operand 7 states and 209 transitions. [2024-06-27 18:09:28,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 584 flow [2024-06-27 18:09:28,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 548 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:28,223 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 286 flow [2024-06-27 18:09:28,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-27 18:09:28,224 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-27 18:09:28,224 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 286 flow [2024-06-27 18:09:28,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:28,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:28,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:28,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:09:28,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:28,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash -701526700, now seen corresponding path program 1 times [2024-06-27 18:09:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291671760] [2024-06-27 18:09:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:28,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291671760] [2024-06-27 18:09:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291671760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:28,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:09:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983336894] [2024-06-27 18:09:28,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:28,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:09:28,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:09:28,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:09:28,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:28,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:28,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:28,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:28,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:30,016 INFO L124 PetriNetUnfolderBase]: 4494/7482 cut-off events. [2024-06-27 18:09:30,017 INFO L125 PetriNetUnfolderBase]: For 8651/8651 co-relation queries the response was YES. [2024-06-27 18:09:30,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19298 conditions, 7482 events. 4494/7482 cut-off events. For 8651/8651 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 49339 event pairs, 2037 based on Foata normal form. 2/7271 useless extension candidates. Maximal degree in co-relation 19278. Up to 6417 conditions per place. [2024-06-27 18:09:30,072 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 62 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-06-27 18:09:30,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 492 flow [2024-06-27 18:09:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 18:09:30,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:09:30,075 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 286 flow. Second operand 5 states and 125 transitions. [2024-06-27 18:09:30,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 492 flow [2024-06-27 18:09:30,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 452 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:30,084 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 299 flow [2024-06-27 18:09:30,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-06-27 18:09:30,087 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-27 18:09:30,087 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 299 flow [2024-06-27 18:09:30,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:30,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:30,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:30,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:09:30,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:30,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1155807743, now seen corresponding path program 1 times [2024-06-27 18:09:30,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:30,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108223795] [2024-06-27 18:09:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:30,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:31,438 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 18:09:31,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:31,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108223795] [2024-06-27 18:09:31,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108223795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:31,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:31,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204856451] [2024-06-27 18:09:31,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:31,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:31,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:09:31,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 299 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:31,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:31,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:09:31,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:32,458 INFO L124 PetriNetUnfolderBase]: 3618/6092 cut-off events. [2024-06-27 18:09:32,459 INFO L125 PetriNetUnfolderBase]: For 10395/10395 co-relation queries the response was YES. [2024-06-27 18:09:32,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16902 conditions, 6092 events. 3618/6092 cut-off events. For 10395/10395 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 40360 event pairs, 1192 based on Foata normal form. 6/5882 useless extension candidates. Maximal degree in co-relation 16881. Up to 5072 conditions per place. [2024-06-27 18:09:32,499 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 80 selfloop transitions, 18 changer transitions 0/112 dead transitions. [2024-06-27 18:09:32,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 112 transitions, 625 flow [2024-06-27 18:09:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-06-27 18:09:32,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005830903790087 [2024-06-27 18:09:32,502 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 299 flow. Second operand 7 states and 206 transitions. [2024-06-27 18:09:32,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 112 transitions, 625 flow [2024-06-27 18:09:32,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 112 transitions, 598 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:32,509 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 331 flow [2024-06-27 18:09:32,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2024-06-27 18:09:32,511 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-27 18:09:32,511 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 331 flow [2024-06-27 18:09:32,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:32,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:32,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:32,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:09:32,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:32,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:32,513 INFO L85 PathProgramCache]: Analyzing trace with hash -272490334, now seen corresponding path program 1 times [2024-06-27 18:09:32,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:32,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513303883] [2024-06-27 18:09:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:33,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:33,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513303883] [2024-06-27 18:09:33,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513303883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:33,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:33,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840659322] [2024-06-27 18:09:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:33,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:33,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:33,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:33,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 331 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 18:09:33,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:33,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:33,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:34,538 INFO L124 PetriNetUnfolderBase]: 4483/7448 cut-off events. [2024-06-27 18:09:34,539 INFO L125 PetriNetUnfolderBase]: For 15620/15620 co-relation queries the response was YES. [2024-06-27 18:09:34,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21106 conditions, 7448 events. 4483/7448 cut-off events. For 15620/15620 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 49142 event pairs, 1875 based on Foata normal form. 4/7239 useless extension candidates. Maximal degree in co-relation 21084. Up to 6366 conditions per place. [2024-06-27 18:09:34,594 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 72 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-27 18:09:34,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 591 flow [2024-06-27 18:09:34,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:09:34,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-06-27 18:09:34,596 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 331 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:09:34,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 591 flow [2024-06-27 18:09:34,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 96 transitions, 540 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:34,604 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 344 flow [2024-06-27 18:09:34,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-27 18:09:34,605 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-06-27 18:09:34,605 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 344 flow [2024-06-27 18:09:34,606 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 18:09:34,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:34,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:34,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:09:34,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:34,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:34,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1084450706, now seen corresponding path program 1 times [2024-06-27 18:09:34,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:34,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080539512] [2024-06-27 18:09:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:34,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:35,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:35,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080539512] [2024-06-27 18:09:35,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080539512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:35,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:35,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:35,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051434901] [2024-06-27 18:09:35,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:35,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:35,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:35,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:35,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:35,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:35,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 344 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 18:09:35,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:35,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:35,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:36,313 INFO L124 PetriNetUnfolderBase]: 4511/7387 cut-off events. [2024-06-27 18:09:36,313 INFO L125 PetriNetUnfolderBase]: For 19009/19015 co-relation queries the response was YES. [2024-06-27 18:09:36,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22081 conditions, 7387 events. 4511/7387 cut-off events. For 19009/19015 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 47578 event pairs, 1672 based on Foata normal form. 6/7179 useless extension candidates. Maximal degree in co-relation 22057. Up to 6390 conditions per place. [2024-06-27 18:09:36,369 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 81 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-06-27 18:09:36,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 715 flow [2024-06-27 18:09:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 18:09:36,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 18:09:36,373 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 344 flow. Second operand 6 states and 154 transitions. [2024-06-27 18:09:36,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 715 flow [2024-06-27 18:09:36,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 670 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:36,385 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 436 flow [2024-06-27 18:09:36,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-27 18:09:36,387 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-27 18:09:36,388 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 436 flow [2024-06-27 18:09:36,388 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 18:09:36,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:36,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:09:36,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:36,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1116746816, now seen corresponding path program 2 times [2024-06-27 18:09:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:36,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040914254] [2024-06-27 18:09:36,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:36,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:37,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040914254] [2024-06-27 18:09:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040914254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:37,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:37,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389541683] [2024-06-27 18:09:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:37,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:37,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:37,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:37,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 436 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 18:09:37,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:37,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:37,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:38,159 INFO L124 PetriNetUnfolderBase]: 4506/7524 cut-off events. [2024-06-27 18:09:38,159 INFO L125 PetriNetUnfolderBase]: For 23651/23651 co-relation queries the response was YES. [2024-06-27 18:09:38,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23486 conditions, 7524 events. 4506/7524 cut-off events. For 23651/23651 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 49848 event pairs, 1886 based on Foata normal form. 2/7312 useless extension candidates. Maximal degree in co-relation 23460. Up to 6423 conditions per place. [2024-06-27 18:09:38,200 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 79 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-27 18:09:38,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 678 flow [2024-06-27 18:09:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:09:38,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-27 18:09:38,202 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 436 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:09:38,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 678 flow [2024-06-27 18:09:38,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 102 transitions, 644 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:38,224 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 436 flow [2024-06-27 18:09:38,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=79, PETRI_TRANSITIONS=79} [2024-06-27 18:09:38,226 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-27 18:09:38,226 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 436 flow [2024-06-27 18:09:38,227 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 18:09:38,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:38,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:38,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:09:38,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:38,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash -957489857, now seen corresponding path program 1 times [2024-06-27 18:09:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:38,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696256427] [2024-06-27 18:09:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:38,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:39,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:39,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696256427] [2024-06-27 18:09:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696256427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:39,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8697161] [2024-06-27 18:09:39,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:39,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:39,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:39,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 79 transitions, 436 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 18:09:39,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:39,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:39,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:40,467 INFO L124 PetriNetUnfolderBase]: 4534/7422 cut-off events. [2024-06-27 18:09:40,467 INFO L125 PetriNetUnfolderBase]: For 25868/25877 co-relation queries the response was YES. [2024-06-27 18:09:40,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23783 conditions, 7422 events. 4534/7422 cut-off events. For 25868/25877 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 47811 event pairs, 1632 based on Foata normal form. 8/7215 useless extension candidates. Maximal degree in co-relation 23754. Up to 6356 conditions per place. [2024-06-27 18:09:40,509 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 90 selfloop transitions, 26 changer transitions 0/126 dead transitions. [2024-06-27 18:09:40,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 126 transitions, 868 flow [2024-06-27 18:09:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:09:40,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:09:40,513 INFO L175 Difference]: Start difference. First operand has 79 places, 79 transitions, 436 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:09:40,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 126 transitions, 868 flow [2024-06-27 18:09:40,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 126 transitions, 829 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:40,531 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 519 flow [2024-06-27 18:09:40,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2024-06-27 18:09:40,532 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2024-06-27 18:09:40,532 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 519 flow [2024-06-27 18:09:40,533 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 18:09:40,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:40,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:09:40,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:40,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -105735964, now seen corresponding path program 1 times [2024-06-27 18:09:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348492860] [2024-06-27 18:09:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:41,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:41,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348492860] [2024-06-27 18:09:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348492860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:41,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:41,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:41,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633792061] [2024-06-27 18:09:41,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:41,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:41,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:41,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:41,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:41,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:41,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 519 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 18:09:41,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:41,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:41,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:42,514 INFO L124 PetriNetUnfolderBase]: 4613/7534 cut-off events. [2024-06-27 18:09:42,514 INFO L125 PetriNetUnfolderBase]: For 32053/32062 co-relation queries the response was YES. [2024-06-27 18:09:42,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25477 conditions, 7534 events. 4613/7534 cut-off events. For 32053/32062 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 48402 event pairs, 1529 based on Foata normal form. 6/7323 useless extension candidates. Maximal degree in co-relation 25448. Up to 6440 conditions per place. [2024-06-27 18:09:42,551 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 99 selfloop transitions, 26 changer transitions 0/135 dead transitions. [2024-06-27 18:09:42,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 135 transitions, 989 flow [2024-06-27 18:09:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:09:42,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:09:42,554 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 519 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:09:42,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 135 transitions, 989 flow [2024-06-27 18:09:42,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 135 transitions, 941 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:42,581 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 632 flow [2024-06-27 18:09:42,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2024-06-27 18:09:42,582 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-06-27 18:09:42,582 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 632 flow [2024-06-27 18:09:42,582 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 18:09:42,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:42,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:42,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:09:42,583 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:42,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash -105736181, now seen corresponding path program 2 times [2024-06-27 18:09:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:42,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707437183] [2024-06-27 18:09:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:43,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:43,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707437183] [2024-06-27 18:09:43,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707437183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:43,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:43,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:43,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130216767] [2024-06-27 18:09:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:43,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:43,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:43,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:43,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 632 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 18:09:43,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:43,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:43,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:44,767 INFO L124 PetriNetUnfolderBase]: 4636/7579 cut-off events. [2024-06-27 18:09:44,767 INFO L125 PetriNetUnfolderBase]: For 38298/38304 co-relation queries the response was YES. [2024-06-27 18:09:44,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27213 conditions, 7579 events. 4636/7579 cut-off events. For 38298/38304 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 48696 event pairs, 1561 based on Foata normal form. 6/7366 useless extension candidates. Maximal degree in co-relation 27181. Up to 6549 conditions per place. [2024-06-27 18:09:44,799 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 103 selfloop transitions, 21 changer transitions 0/134 dead transitions. [2024-06-27 18:09:44,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 134 transitions, 1012 flow [2024-06-27 18:09:44,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:09:44,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:09:44,801 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 632 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:09:44,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 134 transitions, 1012 flow [2024-06-27 18:09:44,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 134 transitions, 982 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:44,821 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 688 flow [2024-06-27 18:09:44,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-06-27 18:09:44,821 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-27 18:09:44,822 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 688 flow [2024-06-27 18:09:44,822 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 18:09:44,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:44,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:44,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:09:44,822 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:44,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:44,823 INFO L85 PathProgramCache]: Analyzing trace with hash 236176834, now seen corresponding path program 2 times [2024-06-27 18:09:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:44,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372901752] [2024-06-27 18:09:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372901752] [2024-06-27 18:09:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372901752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:45,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:45,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:45,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841116638] [2024-06-27 18:09:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:45,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:45,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:45,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 688 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 18:09:45,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:45,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:45,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:46,828 INFO L124 PetriNetUnfolderBase]: 4682/7795 cut-off events. [2024-06-27 18:09:46,828 INFO L125 PetriNetUnfolderBase]: For 42472/42472 co-relation queries the response was YES. [2024-06-27 18:09:46,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28005 conditions, 7795 events. 4682/7795 cut-off events. For 42472/42472 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 51539 event pairs, 1778 based on Foata normal form. 4/7580 useless extension candidates. Maximal degree in co-relation 27970. Up to 6583 conditions per place. [2024-06-27 18:09:46,868 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 104 selfloop transitions, 22 changer transitions 0/136 dead transitions. [2024-06-27 18:09:46,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 136 transitions, 1120 flow [2024-06-27 18:09:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:09:46,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:09:46,870 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 688 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:09:46,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 136 transitions, 1120 flow [2024-06-27 18:09:46,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 1064 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:46,895 INFO L231 Difference]: Finished difference. Result has 93 places, 101 transitions, 720 flow [2024-06-27 18:09:46,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=720, PETRI_PLACES=93, PETRI_TRANSITIONS=101} [2024-06-27 18:09:46,896 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-27 18:09:46,896 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 101 transitions, 720 flow [2024-06-27 18:09:46,896 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 18:09:46,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:46,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:46,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:09:46,897 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:46,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash 129812576, now seen corresponding path program 3 times [2024-06-27 18:09:46,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:46,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538460517] [2024-06-27 18:09:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:47,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:47,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538460517] [2024-06-27 18:09:47,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538460517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:47,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:47,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:47,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864685532] [2024-06-27 18:09:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:47,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:47,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:47,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 101 transitions, 720 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 18:09:47,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:47,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:47,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:48,962 INFO L124 PetriNetUnfolderBase]: 4672/7787 cut-off events. [2024-06-27 18:09:48,962 INFO L125 PetriNetUnfolderBase]: For 45650/45650 co-relation queries the response was YES. [2024-06-27 18:09:48,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28178 conditions, 7787 events. 4672/7787 cut-off events. For 45650/45650 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 51559 event pairs, 1782 based on Foata normal form. 4/7570 useless extension candidates. Maximal degree in co-relation 28142. Up to 6624 conditions per place. [2024-06-27 18:09:49,006 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 104 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2024-06-27 18:09:49,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 1040 flow [2024-06-27 18:09:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:09:49,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-06-27 18:09:49,008 INFO L175 Difference]: Start difference. First operand has 93 places, 101 transitions, 720 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:09:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 131 transitions, 1040 flow [2024-06-27 18:09:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 947 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:49,052 INFO L231 Difference]: Finished difference. Result has 95 places, 101 transitions, 669 flow [2024-06-27 18:09:49,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=669, PETRI_PLACES=95, PETRI_TRANSITIONS=101} [2024-06-27 18:09:49,053 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-27 18:09:49,053 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 101 transitions, 669 flow [2024-06-27 18:09:49,053 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 18:09:49,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:49,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:49,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:09:49,054 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:49,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:49,054 INFO L85 PathProgramCache]: Analyzing trace with hash 129516619, now seen corresponding path program 3 times [2024-06-27 18:09:49,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:49,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529136088] [2024-06-27 18:09:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:49,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:50,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:50,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529136088] [2024-06-27 18:09:50,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529136088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:50,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:50,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:50,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633246051] [2024-06-27 18:09:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:50,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:50,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:50,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:50,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:50,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:50,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 101 transitions, 669 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 18:09:50,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:50,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:50,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:51,054 INFO L124 PetriNetUnfolderBase]: 4667/7779 cut-off events. [2024-06-27 18:09:51,055 INFO L125 PetriNetUnfolderBase]: For 47257/47257 co-relation queries the response was YES. [2024-06-27 18:09:51,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28108 conditions, 7779 events. 4667/7779 cut-off events. For 47257/47257 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 51525 event pairs, 1778 based on Foata normal form. 2/7560 useless extension candidates. Maximal degree in co-relation 28072. Up to 6630 conditions per place. [2024-06-27 18:09:51,100 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 106 selfloop transitions, 16 changer transitions 0/132 dead transitions. [2024-06-27 18:09:51,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 132 transitions, 997 flow [2024-06-27 18:09:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:09:51,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-06-27 18:09:51,102 INFO L175 Difference]: Start difference. First operand has 95 places, 101 transitions, 669 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:09:51,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 132 transitions, 997 flow [2024-06-27 18:09:51,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 934 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:51,135 INFO L231 Difference]: Finished difference. Result has 96 places, 101 transitions, 646 flow [2024-06-27 18:09:51,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=646, PETRI_PLACES=96, PETRI_TRANSITIONS=101} [2024-06-27 18:09:51,136 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-27 18:09:51,136 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 101 transitions, 646 flow [2024-06-27 18:09:51,136 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 18:09:51,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:51,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:09:51,137 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:51,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash -230196845, now seen corresponding path program 1 times [2024-06-27 18:09:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26501748] [2024-06-27 18:09:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:51,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:51,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26501748] [2024-06-27 18:09:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26501748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:51,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:51,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:09:51,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941654587] [2024-06-27 18:09:51,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:51,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:09:51,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:09:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:09:51,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:51,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 101 transitions, 646 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:51,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:51,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:51,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:52,836 INFO L124 PetriNetUnfolderBase]: 5732/9613 cut-off events. [2024-06-27 18:09:52,836 INFO L125 PetriNetUnfolderBase]: For 63990/64022 co-relation queries the response was YES. [2024-06-27 18:09:52,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34067 conditions, 9613 events. 5732/9613 cut-off events. For 63990/64022 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 65855 event pairs, 2433 based on Foata normal form. 1/9307 useless extension candidates. Maximal degree in co-relation 34030. Up to 8200 conditions per place. [2024-06-27 18:09:52,895 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 87 selfloop transitions, 11 changer transitions 0/119 dead transitions. [2024-06-27 18:09:52,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 904 flow [2024-06-27 18:09:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 18:09:52,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 18:09:52,896 INFO L175 Difference]: Start difference. First operand has 96 places, 101 transitions, 646 flow. Second operand 5 states and 120 transitions. [2024-06-27 18:09:52,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 904 flow [2024-06-27 18:09:52,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 119 transitions, 850 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:52,939 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 649 flow [2024-06-27 18:09:52,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=649, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-06-27 18:09:52,939 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 39 predicate places. [2024-06-27 18:09:52,939 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 649 flow [2024-06-27 18:09:52,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:52,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:52,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:52,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:09:52,940 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:52,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash -535735817, now seen corresponding path program 1 times [2024-06-27 18:09:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:52,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579880134] [2024-06-27 18:09:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:52,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:54,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579880134] [2024-06-27 18:09:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579880134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:54,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:54,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337036439] [2024-06-27 18:09:54,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:54,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:54,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:54,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:54,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:54,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 649 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 18:09:54,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:54,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:54,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:55,314 INFO L124 PetriNetUnfolderBase]: 4946/8031 cut-off events. [2024-06-27 18:09:55,315 INFO L125 PetriNetUnfolderBase]: For 63040/63040 co-relation queries the response was YES. [2024-06-27 18:09:55,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31240 conditions, 8031 events. 4946/8031 cut-off events. For 63040/63040 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 51596 event pairs, 1531 based on Foata normal form. 4/7801 useless extension candidates. Maximal degree in co-relation 31203. Up to 6885 conditions per place. [2024-06-27 18:09:55,352 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 127 selfloop transitions, 20 changer transitions 0/158 dead transitions. [2024-06-27 18:09:55,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 158 transitions, 1123 flow [2024-06-27 18:09:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:09:55,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-27 18:09:55,354 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 649 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:09:55,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 158 transitions, 1123 flow [2024-06-27 18:09:55,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 158 transitions, 1090 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:55,391 INFO L231 Difference]: Finished difference. Result has 99 places, 107 transitions, 705 flow [2024-06-27 18:09:55,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=705, PETRI_PLACES=99, PETRI_TRANSITIONS=107} [2024-06-27 18:09:55,392 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-27 18:09:55,392 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 107 transitions, 705 flow [2024-06-27 18:09:55,393 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 18:09:55,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:55,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:55,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:09:55,393 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:55,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash -664174703, now seen corresponding path program 2 times [2024-06-27 18:09:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:55,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141118073] [2024-06-27 18:09:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:55,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141118073] [2024-06-27 18:09:56,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141118073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:56,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:56,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251632502] [2024-06-27 18:09:56,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:56,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:56,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:56,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:56,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 107 transitions, 705 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 18:09:56,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:56,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:56,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:57,588 INFO L124 PetriNetUnfolderBase]: 5002/8118 cut-off events. [2024-06-27 18:09:57,588 INFO L125 PetriNetUnfolderBase]: For 71983/71989 co-relation queries the response was YES. [2024-06-27 18:09:57,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32935 conditions, 8118 events. 5002/8118 cut-off events. For 71983/71989 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 52247 event pairs, 1533 based on Foata normal form. 8/7889 useless extension candidates. Maximal degree in co-relation 32897. Up to 6784 conditions per place. [2024-06-27 18:09:57,637 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 114 selfloop transitions, 40 changer transitions 0/165 dead transitions. [2024-06-27 18:09:57,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 1309 flow [2024-06-27 18:09:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:57,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 18:09:57,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382653061224489 [2024-06-27 18:09:57,639 INFO L175 Difference]: Start difference. First operand has 99 places, 107 transitions, 705 flow. Second operand 8 states and 211 transitions. [2024-06-27 18:09:57,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 1309 flow [2024-06-27 18:09:57,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 165 transitions, 1248 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:57,677 INFO L231 Difference]: Finished difference. Result has 101 places, 113 transitions, 818 flow [2024-06-27 18:09:57,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=818, PETRI_PLACES=101, PETRI_TRANSITIONS=113} [2024-06-27 18:09:57,677 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-27 18:09:57,677 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 113 transitions, 818 flow [2024-06-27 18:09:57,678 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 18:09:57,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:57,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:09:57,678 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:57,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 382586391, now seen corresponding path program 1 times [2024-06-27 18:09:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465383248] [2024-06-27 18:09:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:59,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:59,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465383248] [2024-06-27 18:09:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465383248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:59,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:59,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597223991] [2024-06-27 18:09:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:59,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:09:59,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 113 transitions, 818 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 18:09:59,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:59,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:09:59,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:00,453 INFO L124 PetriNetUnfolderBase]: 5088/8236 cut-off events. [2024-06-27 18:10:00,453 INFO L125 PetriNetUnfolderBase]: For 83207/83213 co-relation queries the response was YES. [2024-06-27 18:10:00,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34691 conditions, 8236 events. 5088/8236 cut-off events. For 83207/83213 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 52896 event pairs, 1464 based on Foata normal form. 5/8001 useless extension candidates. Maximal degree in co-relation 34652. Up to 6823 conditions per place. [2024-06-27 18:10:00,505 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 117 selfloop transitions, 43 changer transitions 0/171 dead transitions. [2024-06-27 18:10:00,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 171 transitions, 1430 flow [2024-06-27 18:10:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 18:10:00,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 18:10:00,507 INFO L175 Difference]: Start difference. First operand has 101 places, 113 transitions, 818 flow. Second operand 8 states and 212 transitions. [2024-06-27 18:10:00,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 171 transitions, 1430 flow [2024-06-27 18:10:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 171 transitions, 1363 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:00,557 INFO L231 Difference]: Finished difference. Result has 105 places, 119 transitions, 923 flow [2024-06-27 18:10:00,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=923, PETRI_PLACES=105, PETRI_TRANSITIONS=119} [2024-06-27 18:10:00,558 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-27 18:10:00,558 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 119 transitions, 923 flow [2024-06-27 18:10:00,558 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 18:10:00,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:00,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:00,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:10:00,559 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:00,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 387228021, now seen corresponding path program 2 times [2024-06-27 18:10:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:00,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220961381] [2024-06-27 18:10:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:01,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:01,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220961381] [2024-06-27 18:10:01,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220961381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:01,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:01,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107229859] [2024-06-27 18:10:01,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:01,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:01,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:01,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:01,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:01,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:01,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 119 transitions, 923 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 18:10:01,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:01,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:01,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:03,039 INFO L124 PetriNetUnfolderBase]: 5190/8388 cut-off events. [2024-06-27 18:10:03,039 INFO L125 PetriNetUnfolderBase]: For 93513/93519 co-relation queries the response was YES. [2024-06-27 18:10:03,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36792 conditions, 8388 events. 5190/8388 cut-off events. For 93513/93519 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 53984 event pairs, 1502 based on Foata normal form. 5/8149 useless extension candidates. Maximal degree in co-relation 36751. Up to 7076 conditions per place. [2024-06-27 18:10:03,080 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 127 selfloop transitions, 37 changer transitions 0/175 dead transitions. [2024-06-27 18:10:03,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 175 transitions, 1555 flow [2024-06-27 18:10:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:03,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 18:10:03,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 18:10:03,083 INFO L175 Difference]: Start difference. First operand has 105 places, 119 transitions, 923 flow. Second operand 8 states and 210 transitions. [2024-06-27 18:10:03,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 175 transitions, 1555 flow [2024-06-27 18:10:03,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 175 transitions, 1472 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:03,138 INFO L231 Difference]: Finished difference. Result has 109 places, 125 transitions, 1012 flow [2024-06-27 18:10:03,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1012, PETRI_PLACES=109, PETRI_TRANSITIONS=125} [2024-06-27 18:10:03,138 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 54 predicate places. [2024-06-27 18:10:03,139 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 125 transitions, 1012 flow [2024-06-27 18:10:03,139 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 18:10:03,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:03,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:03,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:10:03,139 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:03,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1519903023, now seen corresponding path program 3 times [2024-06-27 18:10:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:03,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545086715] [2024-06-27 18:10:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:03,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:04,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:04,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545086715] [2024-06-27 18:10:04,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545086715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:04,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:04,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:04,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150570685] [2024-06-27 18:10:04,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:04,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:04,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:04,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:04,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:04,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 125 transitions, 1012 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 18:10:04,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:04,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:04,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:05,505 INFO L124 PetriNetUnfolderBase]: 5236/8469 cut-off events. [2024-06-27 18:10:05,506 INFO L125 PetriNetUnfolderBase]: For 99338/99344 co-relation queries the response was YES. [2024-06-27 18:10:05,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37584 conditions, 8469 events. 5236/8469 cut-off events. For 99338/99344 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 54593 event pairs, 1561 based on Foata normal form. 8/8227 useless extension candidates. Maximal degree in co-relation 37541. Up to 7302 conditions per place. [2024-06-27 18:10:05,561 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 138 selfloop transitions, 24 changer transitions 0/173 dead transitions. [2024-06-27 18:10:05,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 173 transitions, 1506 flow [2024-06-27 18:10:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:10:05,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-06-27 18:10:05,562 INFO L175 Difference]: Start difference. First operand has 109 places, 125 transitions, 1012 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:10:05,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 173 transitions, 1506 flow [2024-06-27 18:10:05,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 173 transitions, 1449 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:05,627 INFO L231 Difference]: Finished difference. Result has 113 places, 128 transitions, 1057 flow [2024-06-27 18:10:05,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1057, PETRI_PLACES=113, PETRI_TRANSITIONS=128} [2024-06-27 18:10:05,628 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-27 18:10:05,628 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 128 transitions, 1057 flow [2024-06-27 18:10:05,628 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 18:10:05,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:05,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:05,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:10:05,629 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:05,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1017153081, now seen corresponding path program 3 times [2024-06-27 18:10:05,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:05,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711231411] [2024-06-27 18:10:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:06,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:06,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711231411] [2024-06-27 18:10:06,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711231411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:06,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:06,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:06,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618092261] [2024-06-27 18:10:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:06,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:06,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:06,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:06,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 128 transitions, 1057 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 18:10:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:08,125 INFO L124 PetriNetUnfolderBase]: 5226/8452 cut-off events. [2024-06-27 18:10:08,126 INFO L125 PetriNetUnfolderBase]: For 104356/104362 co-relation queries the response was YES. [2024-06-27 18:10:08,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37822 conditions, 8452 events. 5226/8452 cut-off events. For 104356/104362 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 54486 event pairs, 1507 based on Foata normal form. 5/8208 useless extension candidates. Maximal degree in co-relation 37777. Up to 7183 conditions per place. [2024-06-27 18:10:08,185 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 132 selfloop transitions, 32 changer transitions 0/175 dead transitions. [2024-06-27 18:10:08,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 175 transitions, 1523 flow [2024-06-27 18:10:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:10:08,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 18:10:08,189 INFO L175 Difference]: Start difference. First operand has 113 places, 128 transitions, 1057 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:10:08,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 175 transitions, 1523 flow [2024-06-27 18:10:08,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 175 transitions, 1435 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:08,300 INFO L231 Difference]: Finished difference. Result has 115 places, 128 transitions, 1041 flow [2024-06-27 18:10:08,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1041, PETRI_PLACES=115, PETRI_TRANSITIONS=128} [2024-06-27 18:10:08,301 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-27 18:10:08,301 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 128 transitions, 1041 flow [2024-06-27 18:10:08,301 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 18:10:08,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:08,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:10:08,301 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:08,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1268452069, now seen corresponding path program 4 times [2024-06-27 18:10:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328836984] [2024-06-27 18:10:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:09,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:09,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328836984] [2024-06-27 18:10:09,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328836984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:09,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:09,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:09,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32087551] [2024-06-27 18:10:09,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:09,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:09,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:09,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:09,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 128 transitions, 1041 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 18:10:09,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:09,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:10,555 INFO L124 PetriNetUnfolderBase]: 5280/8378 cut-off events. [2024-06-27 18:10:10,555 INFO L125 PetriNetUnfolderBase]: For 111272/111272 co-relation queries the response was YES. [2024-06-27 18:10:10,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38281 conditions, 8378 events. 5280/8378 cut-off events. For 111272/111272 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53416 event pairs, 1790 based on Foata normal form. 4/8216 useless extension candidates. Maximal degree in co-relation 38235. Up to 7319 conditions per place. [2024-06-27 18:10:10,612 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 137 selfloop transitions, 25 changer transitions 0/173 dead transitions. [2024-06-27 18:10:10,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 173 transitions, 1527 flow [2024-06-27 18:10:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:10:10,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-06-27 18:10:10,613 INFO L175 Difference]: Start difference. First operand has 115 places, 128 transitions, 1041 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:10:10,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 173 transitions, 1527 flow [2024-06-27 18:10:10,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 173 transitions, 1453 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:10,694 INFO L231 Difference]: Finished difference. Result has 116 places, 131 transitions, 1073 flow [2024-06-27 18:10:10,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1073, PETRI_PLACES=116, PETRI_TRANSITIONS=131} [2024-06-27 18:10:10,695 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-27 18:10:10,695 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 131 transitions, 1073 flow [2024-06-27 18:10:10,695 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 18:10:10,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:10,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:10,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:10:10,696 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:10,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash 559717911, now seen corresponding path program 5 times [2024-06-27 18:10:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:10,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101750977] [2024-06-27 18:10:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:10,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:11,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:11,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101750977] [2024-06-27 18:10:11,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101750977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:11,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:11,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:11,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672176111] [2024-06-27 18:10:11,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:11,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:11,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:11,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:11,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 131 transitions, 1073 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 18:10:11,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:11,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:11,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:12,907 INFO L124 PetriNetUnfolderBase]: 5326/8448 cut-off events. [2024-06-27 18:10:12,907 INFO L125 PetriNetUnfolderBase]: For 119236/119236 co-relation queries the response was YES. [2024-06-27 18:10:12,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38971 conditions, 8448 events. 5326/8448 cut-off events. For 119236/119236 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 53851 event pairs, 1785 based on Foata normal form. 4/8284 useless extension candidates. Maximal degree in co-relation 38924. Up to 7283 conditions per place. [2024-06-27 18:10:12,962 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 134 selfloop transitions, 33 changer transitions 0/178 dead transitions. [2024-06-27 18:10:12,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 178 transitions, 1669 flow [2024-06-27 18:10:12,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:12,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:10:12,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-27 18:10:12,964 INFO L175 Difference]: Start difference. First operand has 116 places, 131 transitions, 1073 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:10:12,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 178 transitions, 1669 flow [2024-06-27 18:10:13,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 178 transitions, 1593 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:13,054 INFO L231 Difference]: Finished difference. Result has 118 places, 134 transitions, 1119 flow [2024-06-27 18:10:13,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1119, PETRI_PLACES=118, PETRI_TRANSITIONS=134} [2024-06-27 18:10:13,055 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2024-06-27 18:10:13,055 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 134 transitions, 1119 flow [2024-06-27 18:10:13,055 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 18:10:13,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:13,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:13,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:10:13,056 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:13,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:13,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1264296243, now seen corresponding path program 4 times [2024-06-27 18:10:13,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:13,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740540319] [2024-06-27 18:10:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:14,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740540319] [2024-06-27 18:10:14,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740540319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:14,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:14,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:14,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203889306] [2024-06-27 18:10:14,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:14,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:14,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:14,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:14,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:14,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:14,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 134 transitions, 1119 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 18:10:14,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:14,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:14,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:15,256 INFO L124 PetriNetUnfolderBase]: 5316/8433 cut-off events. [2024-06-27 18:10:15,256 INFO L125 PetriNetUnfolderBase]: For 125318/125318 co-relation queries the response was YES. [2024-06-27 18:10:15,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39080 conditions, 8433 events. 5316/8433 cut-off events. For 125318/125318 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 53814 event pairs, 1809 based on Foata normal form. 4/8270 useless extension candidates. Maximal degree in co-relation 39032. Up to 7440 conditions per place. [2024-06-27 18:10:15,314 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 144 selfloop transitions, 19 changer transitions 0/174 dead transitions. [2024-06-27 18:10:15,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 174 transitions, 1557 flow [2024-06-27 18:10:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:15,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:10:15,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2024-06-27 18:10:15,316 INFO L175 Difference]: Start difference. First operand has 118 places, 134 transitions, 1119 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:10:15,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 174 transitions, 1557 flow [2024-06-27 18:10:15,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 174 transitions, 1390 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:15,418 INFO L231 Difference]: Finished difference. Result has 119 places, 134 transitions, 998 flow [2024-06-27 18:10:15,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=998, PETRI_PLACES=119, PETRI_TRANSITIONS=134} [2024-06-27 18:10:15,419 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-27 18:10:15,419 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 134 transitions, 998 flow [2024-06-27 18:10:15,419 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 18:10:15,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:15,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:15,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:10:15,419 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:15,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -270776771, now seen corresponding path program 6 times [2024-06-27 18:10:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:15,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513072623] [2024-06-27 18:10:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:15,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:16,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513072623] [2024-06-27 18:10:16,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513072623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:16,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:16,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:16,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735968919] [2024-06-27 18:10:16,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:16,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:16,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:16,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:16,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:16,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 134 transitions, 998 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 18:10:16,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:16,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:16,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:17,589 INFO L124 PetriNetUnfolderBase]: 5306/8421 cut-off events. [2024-06-27 18:10:17,589 INFO L125 PetriNetUnfolderBase]: For 129164/129164 co-relation queries the response was YES. [2024-06-27 18:10:17,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38419 conditions, 8421 events. 5306/8421 cut-off events. For 129164/129164 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 53702 event pairs, 1804 based on Foata normal form. 4/8257 useless extension candidates. Maximal degree in co-relation 38371. Up to 7404 conditions per place. [2024-06-27 18:10:17,641 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 142 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-27 18:10:17,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 173 transitions, 1428 flow [2024-06-27 18:10:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:10:17,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2024-06-27 18:10:17,642 INFO L175 Difference]: Start difference. First operand has 119 places, 134 transitions, 998 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:10:17,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 173 transitions, 1428 flow [2024-06-27 18:10:17,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 173 transitions, 1342 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:17,731 INFO L231 Difference]: Finished difference. Result has 120 places, 134 transitions, 960 flow [2024-06-27 18:10:17,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=960, PETRI_PLACES=120, PETRI_TRANSITIONS=134} [2024-06-27 18:10:17,732 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-27 18:10:17,732 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 134 transitions, 960 flow [2024-06-27 18:10:17,732 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 18:10:17,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:17,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:17,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:10:17,732 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:17,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash -270439150, now seen corresponding path program 1 times [2024-06-27 18:10:17,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:17,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765129115] [2024-06-27 18:10:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:17,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765129115] [2024-06-27 18:10:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765129115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:18,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:18,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:18,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143126796] [2024-06-27 18:10:18,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:18,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:18,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:10:18,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 134 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:18,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:18,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:10:18,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:20,247 INFO L124 PetriNetUnfolderBase]: 6297/9920 cut-off events. [2024-06-27 18:10:20,247 INFO L125 PetriNetUnfolderBase]: For 156027/156027 co-relation queries the response was YES. [2024-06-27 18:10:20,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44240 conditions, 9920 events. 6297/9920 cut-off events. For 156027/156027 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63257 event pairs, 2189 based on Foata normal form. 4/9709 useless extension candidates. Maximal degree in co-relation 44191. Up to 8782 conditions per place. [2024-06-27 18:10:20,310 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 148 selfloop transitions, 26 changer transitions 0/184 dead transitions. [2024-06-27 18:10:20,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 184 transitions, 1498 flow [2024-06-27 18:10:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:10:20,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2024-06-27 18:10:20,312 INFO L175 Difference]: Start difference. First operand has 120 places, 134 transitions, 960 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:10:20,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 184 transitions, 1498 flow [2024-06-27 18:10:20,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 184 transitions, 1432 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:20,411 INFO L231 Difference]: Finished difference. Result has 122 places, 141 transitions, 1040 flow [2024-06-27 18:10:20,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1040, PETRI_PLACES=122, PETRI_TRANSITIONS=141} [2024-06-27 18:10:20,412 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 67 predicate places. [2024-06-27 18:10:20,412 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 141 transitions, 1040 flow [2024-06-27 18:10:20,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:20,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:20,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:20,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:10:20,413 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:20,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1453834550, now seen corresponding path program 1 times [2024-06-27 18:10:20,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:20,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096014939] [2024-06-27 18:10:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:20,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:21,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:21,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096014939] [2024-06-27 18:10:21,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096014939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:21,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:21,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:10:21,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718852867] [2024-06-27 18:10:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:21,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:10:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:10:21,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:10:21,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:21,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 141 transitions, 1040 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:21,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:21,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:21,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:22,417 INFO L124 PetriNetUnfolderBase]: 6080/9557 cut-off events. [2024-06-27 18:10:22,417 INFO L125 PetriNetUnfolderBase]: For 163345/163383 co-relation queries the response was YES. [2024-06-27 18:10:22,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43253 conditions, 9557 events. 6080/9557 cut-off events. For 163345/163383 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 60501 event pairs, 2417 based on Foata normal form. 9/9408 useless extension candidates. Maximal degree in co-relation 43202. Up to 8612 conditions per place. [2024-06-27 18:10:22,483 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 121 selfloop transitions, 14 changer transitions 0/166 dead transitions. [2024-06-27 18:10:22,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 166 transitions, 1398 flow [2024-06-27 18:10:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:10:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:10:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:10:22,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-27 18:10:22,485 INFO L175 Difference]: Start difference. First operand has 122 places, 141 transitions, 1040 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:10:22,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 166 transitions, 1398 flow [2024-06-27 18:10:22,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 166 transitions, 1317 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:22,605 INFO L231 Difference]: Finished difference. Result has 123 places, 144 transitions, 1027 flow [2024-06-27 18:10:22,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1027, PETRI_PLACES=123, PETRI_TRANSITIONS=144} [2024-06-27 18:10:22,606 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-27 18:10:22,606 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 144 transitions, 1027 flow [2024-06-27 18:10:22,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:22,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:22,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:22,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:10:22,607 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:22,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1028447717, now seen corresponding path program 1 times [2024-06-27 18:10:22,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:22,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319211784] [2024-06-27 18:10:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319211784] [2024-06-27 18:10:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319211784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:23,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975869683] [2024-06-27 18:10:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:23,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:24,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:24,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 144 transitions, 1027 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 18:10:24,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:24,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:24,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:25,580 INFO L124 PetriNetUnfolderBase]: 6070/9503 cut-off events. [2024-06-27 18:10:25,580 INFO L125 PetriNetUnfolderBase]: For 174586/174590 co-relation queries the response was YES. [2024-06-27 18:10:25,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44951 conditions, 9503 events. 6070/9503 cut-off events. For 174586/174590 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 60069 event pairs, 1747 based on Foata normal form. 12/9305 useless extension candidates. Maximal degree in co-relation 44899. Up to 8343 conditions per place. [2024-06-27 18:10:25,647 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 173 selfloop transitions, 23 changer transitions 0/208 dead transitions. [2024-06-27 18:10:25,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 208 transitions, 1643 flow [2024-06-27 18:10:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:10:25,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260770975056689 [2024-06-27 18:10:25,648 INFO L175 Difference]: Start difference. First operand has 123 places, 144 transitions, 1027 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:10:25,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 208 transitions, 1643 flow [2024-06-27 18:10:25,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 208 transitions, 1597 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:25,761 INFO L231 Difference]: Finished difference. Result has 128 places, 147 transitions, 1087 flow [2024-06-27 18:10:25,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1087, PETRI_PLACES=128, PETRI_TRANSITIONS=147} [2024-06-27 18:10:25,762 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-27 18:10:25,762 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 147 transitions, 1087 flow [2024-06-27 18:10:25,762 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 18:10:25,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:25,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:25,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:10:25,763 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:25,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1322877219, now seen corresponding path program 2 times [2024-06-27 18:10:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:25,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388856148] [2024-06-27 18:10:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:25,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:26,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:26,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388856148] [2024-06-27 18:10:26,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388856148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:26,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:26,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:26,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055698301] [2024-06-27 18:10:26,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:26,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:26,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:26,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:26,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:26,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 147 transitions, 1087 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 18:10:26,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:26,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:26,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:28,297 INFO L124 PetriNetUnfolderBase]: 6377/9943 cut-off events. [2024-06-27 18:10:28,298 INFO L125 PetriNetUnfolderBase]: For 202194/202204 co-relation queries the response was YES. [2024-06-27 18:10:28,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49459 conditions, 9943 events. 6377/9943 cut-off events. For 202194/202204 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 62913 event pairs, 1504 based on Foata normal form. 13/9751 useless extension candidates. Maximal degree in co-relation 49406. Up to 7742 conditions per place. [2024-06-27 18:10:28,369 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 138 selfloop transitions, 74 changer transitions 0/224 dead transitions. [2024-06-27 18:10:28,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 224 transitions, 2093 flow [2024-06-27 18:10:28,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-27 18:10:28,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562358276643991 [2024-06-27 18:10:28,371 INFO L175 Difference]: Start difference. First operand has 128 places, 147 transitions, 1087 flow. Second operand 9 states and 248 transitions. [2024-06-27 18:10:28,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 224 transitions, 2093 flow [2024-06-27 18:10:28,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 224 transitions, 2013 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:28,527 INFO L231 Difference]: Finished difference. Result has 130 places, 156 transitions, 1325 flow [2024-06-27 18:10:28,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1325, PETRI_PLACES=130, PETRI_TRANSITIONS=156} [2024-06-27 18:10:28,528 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-27 18:10:28,528 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 156 transitions, 1325 flow [2024-06-27 18:10:28,528 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 18:10:28,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:28,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:28,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:10:28,528 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:28,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:28,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1024723067, now seen corresponding path program 3 times [2024-06-27 18:10:28,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:28,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771801054] [2024-06-27 18:10:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:28,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:29,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:29,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771801054] [2024-06-27 18:10:29,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771801054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:29,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:29,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:29,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477885995] [2024-06-27 18:10:29,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:29,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:29,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:29,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:29,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:29,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:29,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 156 transitions, 1325 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 18:10:29,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:29,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:29,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:31,312 INFO L124 PetriNetUnfolderBase]: 6357/9915 cut-off events. [2024-06-27 18:10:31,312 INFO L125 PetriNetUnfolderBase]: For 214686/214696 co-relation queries the response was YES. [2024-06-27 18:10:31,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50532 conditions, 9915 events. 6357/9915 cut-off events. For 214686/214696 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 62853 event pairs, 1475 based on Foata normal form. 13/9723 useless extension candidates. Maximal degree in co-relation 50478. Up to 7730 conditions per place. [2024-06-27 18:10:31,380 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 134 selfloop transitions, 75 changer transitions 0/221 dead transitions. [2024-06-27 18:10:31,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 221 transitions, 2053 flow [2024-06-27 18:10:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-27 18:10:31,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532879818594104 [2024-06-27 18:10:31,382 INFO L175 Difference]: Start difference. First operand has 130 places, 156 transitions, 1325 flow. Second operand 9 states and 244 transitions. [2024-06-27 18:10:31,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 221 transitions, 2053 flow [2024-06-27 18:10:31,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 221 transitions, 1916 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:31,565 INFO L231 Difference]: Finished difference. Result has 135 places, 156 transitions, 1346 flow [2024-06-27 18:10:31,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1346, PETRI_PLACES=135, PETRI_TRANSITIONS=156} [2024-06-27 18:10:31,566 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-27 18:10:31,566 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 156 transitions, 1346 flow [2024-06-27 18:10:31,566 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 18:10:31,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:31,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:31,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:10:31,566 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:31,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash -880630727, now seen corresponding path program 4 times [2024-06-27 18:10:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:31,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058078065] [2024-06-27 18:10:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:31,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:32,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058078065] [2024-06-27 18:10:32,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058078065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:32,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:32,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:32,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067021669] [2024-06-27 18:10:32,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:32,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:32,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:32,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:32,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:32,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:32,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 156 transitions, 1346 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 18:10:32,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:32,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:32,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:34,152 INFO L124 PetriNetUnfolderBase]: 6436/9976 cut-off events. [2024-06-27 18:10:34,152 INFO L125 PetriNetUnfolderBase]: For 222181/222191 co-relation queries the response was YES. [2024-06-27 18:10:34,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51479 conditions, 9976 events. 6436/9976 cut-off events. For 222181/222191 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 63000 event pairs, 1699 based on Foata normal form. 13/9800 useless extension candidates. Maximal degree in co-relation 51423. Up to 8753 conditions per place. [2024-06-27 18:10:34,222 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 167 selfloop transitions, 37 changer transitions 0/216 dead transitions. [2024-06-27 18:10:34,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 216 transitions, 1982 flow [2024-06-27 18:10:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 18:10:34,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 18:10:34,224 INFO L175 Difference]: Start difference. First operand has 135 places, 156 transitions, 1346 flow. Second operand 9 states and 231 transitions. [2024-06-27 18:10:34,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 216 transitions, 1982 flow [2024-06-27 18:10:34,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 216 transitions, 1818 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:34,363 INFO L231 Difference]: Finished difference. Result has 136 places, 159 transitions, 1328 flow [2024-06-27 18:10:34,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1328, PETRI_PLACES=136, PETRI_TRANSITIONS=159} [2024-06-27 18:10:34,364 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2024-06-27 18:10:34,364 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 159 transitions, 1328 flow [2024-06-27 18:10:34,364 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 18:10:34,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:34,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:34,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:10:34,364 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:34,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash 127653009, now seen corresponding path program 5 times [2024-06-27 18:10:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:34,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666691635] [2024-06-27 18:10:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:35,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:35,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666691635] [2024-06-27 18:10:35,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666691635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:35,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:35,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758631960] [2024-06-27 18:10:35,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:35,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:35,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:35,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:35,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 159 transitions, 1328 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 18:10:35,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:35,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:35,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:36,861 INFO L124 PetriNetUnfolderBase]: 6640/10264 cut-off events. [2024-06-27 18:10:36,861 INFO L125 PetriNetUnfolderBase]: For 241996/242006 co-relation queries the response was YES. [2024-06-27 18:10:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53537 conditions, 10264 events. 6640/10264 cut-off events. For 241996/242006 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 64836 event pairs, 1699 based on Foata normal form. 13/10093 useless extension candidates. Maximal degree in co-relation 53480. Up to 8764 conditions per place. [2024-06-27 18:10:36,934 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 166 selfloop transitions, 49 changer transitions 0/227 dead transitions. [2024-06-27 18:10:36,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 227 transitions, 2184 flow [2024-06-27 18:10:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 18:10:36,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-06-27 18:10:36,935 INFO L175 Difference]: Start difference. First operand has 136 places, 159 transitions, 1328 flow. Second operand 9 states and 240 transitions. [2024-06-27 18:10:36,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 227 transitions, 2184 flow [2024-06-27 18:10:37,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 227 transitions, 2076 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:37,072 INFO L231 Difference]: Finished difference. Result has 138 places, 165 transitions, 1448 flow [2024-06-27 18:10:37,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1448, PETRI_PLACES=138, PETRI_TRANSITIONS=165} [2024-06-27 18:10:37,072 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 83 predicate places. [2024-06-27 18:10:37,072 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 165 transitions, 1448 flow [2024-06-27 18:10:37,073 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 18:10:37,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:37,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:37,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:10:37,073 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:37,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1466767749, now seen corresponding path program 6 times [2024-06-27 18:10:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498767840] [2024-06-27 18:10:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:38,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498767840] [2024-06-27 18:10:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498767840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:38,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:38,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559557202] [2024-06-27 18:10:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:38,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:38,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:38,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 165 transitions, 1448 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 18:10:38,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:38,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:38,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:39,747 INFO L124 PetriNetUnfolderBase]: 6608/10248 cut-off events. [2024-06-27 18:10:39,747 INFO L125 PetriNetUnfolderBase]: For 248903/248913 co-relation queries the response was YES. [2024-06-27 18:10:39,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53598 conditions, 10248 events. 6608/10248 cut-off events. For 248903/248913 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 64976 event pairs, 1677 based on Foata normal form. 9/10066 useless extension candidates. Maximal degree in co-relation 53540. Up to 8899 conditions per place. [2024-06-27 18:10:39,823 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 172 selfloop transitions, 48 changer transitions 0/232 dead transitions. [2024-06-27 18:10:39,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 232 transitions, 2200 flow [2024-06-27 18:10:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:10:39,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:10:39,825 INFO L175 Difference]: Start difference. First operand has 138 places, 165 transitions, 1448 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:10:39,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 232 transitions, 2200 flow [2024-06-27 18:10:40,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 232 transitions, 2060 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:40,037 INFO L231 Difference]: Finished difference. Result has 143 places, 175 transitions, 1582 flow [2024-06-27 18:10:40,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=143, PETRI_TRANSITIONS=175} [2024-06-27 18:10:40,038 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 88 predicate places. [2024-06-27 18:10:40,038 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 175 transitions, 1582 flow [2024-06-27 18:10:40,038 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 18:10:40,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:40,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:40,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:10:40,039 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:40,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:40,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1902900879, now seen corresponding path program 1 times [2024-06-27 18:10:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:40,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109860463] [2024-06-27 18:10:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:40,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:40,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109860463] [2024-06-27 18:10:40,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109860463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:40,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:40,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:10:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194934652] [2024-06-27 18:10:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:40,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:10:40,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:10:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:10:40,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:40,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 175 transitions, 1582 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:40,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:40,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:40,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:42,103 INFO L124 PetriNetUnfolderBase]: 6907/10756 cut-off events. [2024-06-27 18:10:42,103 INFO L125 PetriNetUnfolderBase]: For 263946/264066 co-relation queries the response was YES. [2024-06-27 18:10:42,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55827 conditions, 10756 events. 6907/10756 cut-off events. For 263946/264066 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 68610 event pairs, 2238 based on Foata normal form. 61/10528 useless extension candidates. Maximal degree in co-relation 55766. Up to 9683 conditions per place. [2024-06-27 18:10:42,180 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 161 selfloop transitions, 18 changer transitions 0/211 dead transitions. [2024-06-27 18:10:42,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 211 transitions, 2158 flow [2024-06-27 18:10:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:10:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:10:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:10:42,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-06-27 18:10:42,181 INFO L175 Difference]: Start difference. First operand has 143 places, 175 transitions, 1582 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:10:42,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 211 transitions, 2158 flow [2024-06-27 18:10:42,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 211 transitions, 2070 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:42,340 INFO L231 Difference]: Finished difference. Result has 145 places, 185 transitions, 1636 flow [2024-06-27 18:10:42,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1636, PETRI_PLACES=145, PETRI_TRANSITIONS=185} [2024-06-27 18:10:42,341 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2024-06-27 18:10:42,341 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 185 transitions, 1636 flow [2024-06-27 18:10:42,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:42,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:42,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:42,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:10:42,342 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:42,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:42,342 INFO L85 PathProgramCache]: Analyzing trace with hash -88350749, now seen corresponding path program 7 times [2024-06-27 18:10:42,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:42,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521582570] [2024-06-27 18:10:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:43,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:43,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521582570] [2024-06-27 18:10:43,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521582570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:43,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:43,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719410462] [2024-06-27 18:10:43,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:43,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:43,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:43,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:43,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 185 transitions, 1636 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 18:10:43,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:43,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:43,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:45,159 INFO L124 PetriNetUnfolderBase]: 6851/10681 cut-off events. [2024-06-27 18:10:45,159 INFO L125 PetriNetUnfolderBase]: For 279019/279055 co-relation queries the response was YES. [2024-06-27 18:10:45,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57482 conditions, 10681 events. 6851/10681 cut-off events. For 279019/279055 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 68758 event pairs, 2111 based on Foata normal form. 4/10458 useless extension candidates. Maximal degree in co-relation 57418. Up to 9420 conditions per place. [2024-06-27 18:10:45,245 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 194 selfloop transitions, 30 changer transitions 0/239 dead transitions. [2024-06-27 18:10:45,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 239 transitions, 2294 flow [2024-06-27 18:10:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:10:45,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-27 18:10:45,246 INFO L175 Difference]: Start difference. First operand has 145 places, 185 transitions, 1636 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:10:45,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 239 transitions, 2294 flow [2024-06-27 18:10:45,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 239 transitions, 2264 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 18:10:45,458 INFO L231 Difference]: Finished difference. Result has 153 places, 188 transitions, 1734 flow [2024-06-27 18:10:45,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=153, PETRI_TRANSITIONS=188} [2024-06-27 18:10:45,459 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 98 predicate places. [2024-06-27 18:10:45,459 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 188 transitions, 1734 flow [2024-06-27 18:10:45,459 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 18:10:45,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:45,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:45,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:10:45,460 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:45,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash 171386757, now seen corresponding path program 8 times [2024-06-27 18:10:45,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:45,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623193299] [2024-06-27 18:10:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:45,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:46,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:46,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623193299] [2024-06-27 18:10:46,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623193299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:46,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:46,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:46,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282831370] [2024-06-27 18:10:46,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:46,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:46,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:46,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:46,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:46,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:46,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 188 transitions, 1734 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 18:10:46,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:46,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:46,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:48,420 INFO L124 PetriNetUnfolderBase]: 7038/10935 cut-off events. [2024-06-27 18:10:48,421 INFO L125 PetriNetUnfolderBase]: For 308010/308046 co-relation queries the response was YES. [2024-06-27 18:10:48,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60953 conditions, 10935 events. 7038/10935 cut-off events. For 308010/308046 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 70244 event pairs, 2092 based on Foata normal form. 8/10717 useless extension candidates. Maximal degree in co-relation 60886. Up to 9198 conditions per place. [2024-06-27 18:10:48,509 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 191 selfloop transitions, 46 changer transitions 0/252 dead transitions. [2024-06-27 18:10:48,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 252 transitions, 2808 flow [2024-06-27 18:10:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:10:48,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:10:48,510 INFO L175 Difference]: Start difference. First operand has 153 places, 188 transitions, 1734 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:10:48,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 252 transitions, 2808 flow [2024-06-27 18:10:48,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 252 transitions, 2708 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:48,732 INFO L231 Difference]: Finished difference. Result has 155 places, 194 transitions, 1870 flow [2024-06-27 18:10:48,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1870, PETRI_PLACES=155, PETRI_TRANSITIONS=194} [2024-06-27 18:10:48,733 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2024-06-27 18:10:48,733 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 194 transitions, 1870 flow [2024-06-27 18:10:48,733 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 18:10:48,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:48,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:10:48,733 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:48,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 206309087, now seen corresponding path program 1 times [2024-06-27 18:10:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:48,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2418491] [2024-06-27 18:10:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:49,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:49,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2418491] [2024-06-27 18:10:49,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2418491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:49,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:49,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411699263] [2024-06-27 18:10:49,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:49,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:49,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:49,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:10:49,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 194 transitions, 1870 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:49,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:49,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:10:49,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:51,552 INFO L124 PetriNetUnfolderBase]: 7689/11900 cut-off events. [2024-06-27 18:10:51,552 INFO L125 PetriNetUnfolderBase]: For 328478/328498 co-relation queries the response was YES. [2024-06-27 18:10:51,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65981 conditions, 11900 events. 7689/11900 cut-off events. For 328478/328498 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 75337 event pairs, 2542 based on Foata normal form. 2/11667 useless extension candidates. Maximal degree in co-relation 65913. Up to 10699 conditions per place. [2024-06-27 18:10:51,642 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 202 selfloop transitions, 27 changer transitions 0/242 dead transitions. [2024-06-27 18:10:51,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 242 transitions, 2556 flow [2024-06-27 18:10:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:10:51,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4770408163265306 [2024-06-27 18:10:51,644 INFO L175 Difference]: Start difference. First operand has 155 places, 194 transitions, 1870 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:10:51,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 242 transitions, 2556 flow [2024-06-27 18:10:51,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 242 transitions, 2312 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:51,876 INFO L231 Difference]: Finished difference. Result has 158 places, 206 transitions, 1861 flow [2024-06-27 18:10:51,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1861, PETRI_PLACES=158, PETRI_TRANSITIONS=206} [2024-06-27 18:10:51,877 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2024-06-27 18:10:51,877 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 206 transitions, 1861 flow [2024-06-27 18:10:51,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:51,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:51,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:51,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:10:51,878 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:51,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash 195855391, now seen corresponding path program 9 times [2024-06-27 18:10:51,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:51,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930178721] [2024-06-27 18:10:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:51,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:52,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:52,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930178721] [2024-06-27 18:10:52,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930178721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:52,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:52,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035336759] [2024-06-27 18:10:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:52,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:52,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:52,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:52,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 206 transitions, 1861 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 18:10:52,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:52,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:52,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:54,707 INFO L124 PetriNetUnfolderBase]: 6992/10929 cut-off events. [2024-06-27 18:10:54,707 INFO L125 PetriNetUnfolderBase]: For 322343/322367 co-relation queries the response was YES. [2024-06-27 18:10:54,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60927 conditions, 10929 events. 6992/10929 cut-off events. For 322343/322367 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 71011 event pairs, 2132 based on Foata normal form. 6/10712 useless extension candidates. Maximal degree in co-relation 60857. Up to 9595 conditions per place. [2024-06-27 18:10:54,790 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 212 selfloop transitions, 29 changer transitions 0/257 dead transitions. [2024-06-27 18:10:54,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 257 transitions, 2545 flow [2024-06-27 18:10:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:10:54,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988662131519274 [2024-06-27 18:10:54,792 INFO L175 Difference]: Start difference. First operand has 158 places, 206 transitions, 1861 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:10:54,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 257 transitions, 2545 flow [2024-06-27 18:10:55,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 257 transitions, 2470 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:55,042 INFO L231 Difference]: Finished difference. Result has 163 places, 209 transitions, 1914 flow [2024-06-27 18:10:55,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1914, PETRI_PLACES=163, PETRI_TRANSITIONS=209} [2024-06-27 18:10:55,042 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 108 predicate places. [2024-06-27 18:10:55,042 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 209 transitions, 1914 flow [2024-06-27 18:10:55,043 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 18:10:55,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:55,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:55,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:10:55,043 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:55,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1775980253, now seen corresponding path program 10 times [2024-06-27 18:10:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:55,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552889580] [2024-06-27 18:10:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:55,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:56,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:56,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552889580] [2024-06-27 18:10:56,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552889580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:56,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:56,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:56,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996706875] [2024-06-27 18:10:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:56,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:56,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:56,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:56,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 209 transitions, 1914 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 18:10:56,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:56,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:56,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:58,019 INFO L124 PetriNetUnfolderBase]: 6982/10871 cut-off events. [2024-06-27 18:10:58,019 INFO L125 PetriNetUnfolderBase]: For 332599/332625 co-relation queries the response was YES. [2024-06-27 18:10:58,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61512 conditions, 10871 events. 6982/10871 cut-off events. For 332599/332625 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 70163 event pairs, 2044 based on Foata normal form. 4/10664 useless extension candidates. Maximal degree in co-relation 61441. Up to 9301 conditions per place. [2024-06-27 18:10:58,102 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 200 selfloop transitions, 52 changer transitions 0/268 dead transitions. [2024-06-27 18:10:58,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 268 transitions, 2678 flow [2024-06-27 18:10:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:10:58,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-27 18:10:58,103 INFO L175 Difference]: Start difference. First operand has 163 places, 209 transitions, 1914 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:10:58,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 268 transitions, 2678 flow [2024-06-27 18:10:58,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 268 transitions, 2578 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:58,313 INFO L231 Difference]: Finished difference. Result has 166 places, 217 transitions, 2051 flow [2024-06-27 18:10:58,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2051, PETRI_PLACES=166, PETRI_TRANSITIONS=217} [2024-06-27 18:10:58,314 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 111 predicate places. [2024-06-27 18:10:58,314 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 217 transitions, 2051 flow [2024-06-27 18:10:58,314 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 18:10:58,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:58,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:58,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:10:58,314 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:58,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:58,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2119183441, now seen corresponding path program 2 times [2024-06-27 18:10:58,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:58,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746500879] [2024-06-27 18:10:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:58,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:58,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:58,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746500879] [2024-06-27 18:10:58,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746500879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:58,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:58,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:10:58,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968088801] [2024-06-27 18:10:58,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:58,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:10:58,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:58,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:10:58,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:10:59,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:10:59,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 217 transitions, 2051 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:59,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:59,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:10:59,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:00,522 INFO L124 PetriNetUnfolderBase]: 7248/11330 cut-off events. [2024-06-27 18:11:00,522 INFO L125 PetriNetUnfolderBase]: For 356391/356616 co-relation queries the response was YES. [2024-06-27 18:11:00,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64035 conditions, 11330 events. 7248/11330 cut-off events. For 356391/356616 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 73186 event pairs, 2566 based on Foata normal form. 136/11164 useless extension candidates. Maximal degree in co-relation 63962. Up to 10171 conditions per place. [2024-06-27 18:11:00,637 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 188 selfloop transitions, 13 changer transitions 0/234 dead transitions. [2024-06-27 18:11:00,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 234 transitions, 2501 flow [2024-06-27 18:11:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:11:00,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-27 18:11:00,638 INFO L175 Difference]: Start difference. First operand has 166 places, 217 transitions, 2051 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:11:00,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 234 transitions, 2501 flow [2024-06-27 18:11:01,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 234 transitions, 2388 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:01,176 INFO L231 Difference]: Finished difference. Result has 167 places, 217 transitions, 1970 flow [2024-06-27 18:11:01,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1970, PETRI_PLACES=167, PETRI_TRANSITIONS=217} [2024-06-27 18:11:01,177 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2024-06-27 18:11:01,177 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 217 transitions, 1970 flow [2024-06-27 18:11:01,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:01,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:01,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:01,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:11:01,178 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:01,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash 563409934, now seen corresponding path program 1 times [2024-06-27 18:11:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:01,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900978961] [2024-06-27 18:11:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:01,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:01,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900978961] [2024-06-27 18:11:01,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900978961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:01,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:01,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:01,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241125463] [2024-06-27 18:11:01,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:01,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:01,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:01,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:01,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:01,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:11:01,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 217 transitions, 1970 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:01,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:01,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:11:01,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:03,539 INFO L124 PetriNetUnfolderBase]: 8223/12548 cut-off events. [2024-06-27 18:11:03,539 INFO L125 PetriNetUnfolderBase]: For 366100/366100 co-relation queries the response was YES. [2024-06-27 18:11:03,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69346 conditions, 12548 events. 8223/12548 cut-off events. For 366100/366100 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 78112 event pairs, 2821 based on Foata normal form. 1/12319 useless extension candidates. Maximal degree in co-relation 69271. Up to 11575 conditions per place. [2024-06-27 18:11:03,652 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 215 selfloop transitions, 24 changer transitions 0/247 dead transitions. [2024-06-27 18:11:03,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 247 transitions, 2668 flow [2024-06-27 18:11:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:11:03,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-27 18:11:03,654 INFO L175 Difference]: Start difference. First operand has 167 places, 217 transitions, 1970 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:11:03,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 247 transitions, 2668 flow [2024-06-27 18:11:03,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 247 transitions, 2617 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:03,914 INFO L231 Difference]: Finished difference. Result has 168 places, 223 transitions, 2044 flow [2024-06-27 18:11:03,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2044, PETRI_PLACES=168, PETRI_TRANSITIONS=223} [2024-06-27 18:11:03,915 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 113 predicate places. [2024-06-27 18:11:03,915 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 223 transitions, 2044 flow [2024-06-27 18:11:03,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:03,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:03,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:11:03,916 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:03,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:03,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1288302060, now seen corresponding path program 2 times [2024-06-27 18:11:03,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:03,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590643196] [2024-06-27 18:11:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:03,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:04,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:04,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590643196] [2024-06-27 18:11:04,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590643196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:04,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:04,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967917600] [2024-06-27 18:11:04,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:04,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:04,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:04,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:11:04,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 223 transitions, 2044 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:04,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:04,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:11:04,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:06,612 INFO L124 PetriNetUnfolderBase]: 8220/12536 cut-off events. [2024-06-27 18:11:06,612 INFO L125 PetriNetUnfolderBase]: For 381855/381861 co-relation queries the response was YES. [2024-06-27 18:11:06,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70503 conditions, 12536 events. 8220/12536 cut-off events. For 381855/381861 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 77962 event pairs, 2821 based on Foata normal form. 5/12313 useless extension candidates. Maximal degree in co-relation 70428. Up to 11572 conditions per place. [2024-06-27 18:11:06,732 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 211 selfloop transitions, 24 changer transitions 0/243 dead transitions. [2024-06-27 18:11:06,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 243 transitions, 2578 flow [2024-06-27 18:11:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 18:11:06,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 18:11:06,733 INFO L175 Difference]: Start difference. First operand has 168 places, 223 transitions, 2044 flow. Second operand 6 states and 133 transitions. [2024-06-27 18:11:06,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 243 transitions, 2578 flow [2024-06-27 18:11:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 243 transitions, 2523 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 18:11:07,047 INFO L231 Difference]: Finished difference. Result has 172 places, 223 transitions, 2044 flow [2024-06-27 18:11:07,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2044, PETRI_PLACES=172, PETRI_TRANSITIONS=223} [2024-06-27 18:11:07,048 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-27 18:11:07,048 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 223 transitions, 2044 flow [2024-06-27 18:11:07,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:07,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:07,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:07,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:11:07,049 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:07,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2058631344, now seen corresponding path program 1 times [2024-06-27 18:11:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:07,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296668456] [2024-06-27 18:11:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:08,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296668456] [2024-06-27 18:11:08,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296668456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:08,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:08,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:08,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071685358] [2024-06-27 18:11:08,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:08,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:08,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:08,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:08,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 223 transitions, 2044 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:08,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:08,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:08,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:10,224 INFO L124 PetriNetUnfolderBase]: 7111/11162 cut-off events. [2024-06-27 18:11:10,224 INFO L125 PetriNetUnfolderBase]: For 391739/391775 co-relation queries the response was YES. [2024-06-27 18:11:10,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65218 conditions, 11162 events. 7111/11162 cut-off events. For 391739/391775 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 72736 event pairs, 1555 based on Foata normal form. 4/10898 useless extension candidates. Maximal degree in co-relation 65141. Up to 9723 conditions per place. [2024-06-27 18:11:10,330 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 254 selfloop transitions, 26 changer transitions 0/298 dead transitions. [2024-06-27 18:11:10,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 298 transitions, 3098 flow [2024-06-27 18:11:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 18:11:10,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244897959183673 [2024-06-27 18:11:10,334 INFO L175 Difference]: Start difference. First operand has 172 places, 223 transitions, 2044 flow. Second operand 10 states and 257 transitions. [2024-06-27 18:11:10,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 298 transitions, 3098 flow [2024-06-27 18:11:10,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 298 transitions, 3032 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:10,608 INFO L231 Difference]: Finished difference. Result has 177 places, 227 transitions, 2141 flow [2024-06-27 18:11:10,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2141, PETRI_PLACES=177, PETRI_TRANSITIONS=227} [2024-06-27 18:11:10,609 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 122 predicate places. [2024-06-27 18:11:10,609 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 227 transitions, 2141 flow [2024-06-27 18:11:10,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:10,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:10,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:10,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:11:10,610 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:10,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2058570894, now seen corresponding path program 2 times [2024-06-27 18:11:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:10,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341071692] [2024-06-27 18:11:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:11,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:11,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341071692] [2024-06-27 18:11:11,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341071692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:11,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:11,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:11,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395136842] [2024-06-27 18:11:11,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:11,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:11,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:12,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:12,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 227 transitions, 2141 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:12,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:12,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:12,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:13,894 INFO L124 PetriNetUnfolderBase]: 7100/11141 cut-off events. [2024-06-27 18:11:13,895 INFO L125 PetriNetUnfolderBase]: For 407923/407959 co-relation queries the response was YES. [2024-06-27 18:11:13,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65960 conditions, 11141 events. 7100/11141 cut-off events. For 407923/407959 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 72545 event pairs, 1827 based on Foata normal form. 4/10881 useless extension candidates. Maximal degree in co-relation 65882. Up to 9801 conditions per place. [2024-06-27 18:11:13,991 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 247 selfloop transitions, 22 changer transitions 0/287 dead transitions. [2024-06-27 18:11:13,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 287 transitions, 2879 flow [2024-06-27 18:11:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:11:13,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-27 18:11:13,992 INFO L175 Difference]: Start difference. First operand has 177 places, 227 transitions, 2141 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:11:13,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 287 transitions, 2879 flow [2024-06-27 18:11:14,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 287 transitions, 2763 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:14,219 INFO L231 Difference]: Finished difference. Result has 180 places, 227 transitions, 2076 flow [2024-06-27 18:11:14,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2076, PETRI_PLACES=180, PETRI_TRANSITIONS=227} [2024-06-27 18:11:14,220 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 125 predicate places. [2024-06-27 18:11:14,220 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 227 transitions, 2076 flow [2024-06-27 18:11:14,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:14,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:14,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:14,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:11:14,220 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:14,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1701821028, now seen corresponding path program 3 times [2024-06-27 18:11:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:14,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727169889] [2024-06-27 18:11:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:15,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:15,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727169889] [2024-06-27 18:11:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727169889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:15,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:15,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:15,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881911670] [2024-06-27 18:11:15,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:15,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:15,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:15,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:15,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 227 transitions, 2076 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:15,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:15,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:15,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:17,617 INFO L124 PetriNetUnfolderBase]: 7135/11179 cut-off events. [2024-06-27 18:11:17,617 INFO L125 PetriNetUnfolderBase]: For 423524/423566 co-relation queries the response was YES. [2024-06-27 18:11:17,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66299 conditions, 11179 events. 7135/11179 cut-off events. For 423524/423566 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 72710 event pairs, 1797 based on Foata normal form. 8/10923 useless extension candidates. Maximal degree in co-relation 66219. Up to 9738 conditions per place. [2024-06-27 18:11:17,712 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 237 selfloop transitions, 46 changer transitions 0/301 dead transitions. [2024-06-27 18:11:17,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 301 transitions, 2978 flow [2024-06-27 18:11:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:11:17,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-06-27 18:11:17,713 INFO L175 Difference]: Start difference. First operand has 180 places, 227 transitions, 2076 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:11:17,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 301 transitions, 2978 flow [2024-06-27 18:11:18,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 301 transitions, 2925 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:18,018 INFO L231 Difference]: Finished difference. Result has 184 places, 237 transitions, 2290 flow [2024-06-27 18:11:18,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2290, PETRI_PLACES=184, PETRI_TRANSITIONS=237} [2024-06-27 18:11:18,018 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 129 predicate places. [2024-06-27 18:11:18,018 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 237 transitions, 2290 flow [2024-06-27 18:11:18,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:18,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:18,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:18,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:11:18,019 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:18,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:18,019 INFO L85 PathProgramCache]: Analyzing trace with hash 827914660, now seen corresponding path program 1 times [2024-06-27 18:11:18,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:18,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112425256] [2024-06-27 18:11:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:18,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:18,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:18,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112425256] [2024-06-27 18:11:18,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112425256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:18,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:18,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:11:18,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610047496] [2024-06-27 18:11:18,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:18,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:11:18,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:11:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:11:18,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:18,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 237 transitions, 2290 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 18:11:18,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:18,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:18,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:20,596 INFO L124 PetriNetUnfolderBase]: 7434/11565 cut-off events. [2024-06-27 18:11:20,596 INFO L125 PetriNetUnfolderBase]: For 455882/456071 co-relation queries the response was YES. [2024-06-27 18:11:20,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69124 conditions, 11565 events. 7434/11565 cut-off events. For 455882/456071 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 74161 event pairs, 2212 based on Foata normal form. 134/11394 useless extension candidates. Maximal degree in co-relation 69041. Up to 10245 conditions per place. [2024-06-27 18:11:20,717 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 212 selfloop transitions, 28 changer transitions 0/280 dead transitions. [2024-06-27 18:11:20,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 280 transitions, 3058 flow [2024-06-27 18:11:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:11:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:11:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:11:20,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2024-06-27 18:11:20,718 INFO L175 Difference]: Start difference. First operand has 184 places, 237 transitions, 2290 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:11:20,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 280 transitions, 3058 flow [2024-06-27 18:11:21,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 280 transitions, 2952 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 18:11:21,072 INFO L231 Difference]: Finished difference. Result has 187 places, 243 transitions, 2333 flow [2024-06-27 18:11:21,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2333, PETRI_PLACES=187, PETRI_TRANSITIONS=243} [2024-06-27 18:11:21,073 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 132 predicate places. [2024-06-27 18:11:21,073 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 243 transitions, 2333 flow [2024-06-27 18:11:21,073 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 18:11:21,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:21,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:21,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:11:21,073 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:21,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1844499498, now seen corresponding path program 1 times [2024-06-27 18:11:21,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:21,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277084897] [2024-06-27 18:11:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:21,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:22,502 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 18:11:22,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:22,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277084897] [2024-06-27 18:11:22,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277084897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:22,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:22,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:22,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572739834] [2024-06-27 18:11:22,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:22,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:22,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:22,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:22,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:22,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 243 transitions, 2333 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:22,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:22,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:22,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:24,556 INFO L124 PetriNetUnfolderBase]: 7260/11175 cut-off events. [2024-06-27 18:11:24,556 INFO L125 PetriNetUnfolderBase]: For 469196/469254 co-relation queries the response was YES. [2024-06-27 18:11:24,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69961 conditions, 11175 events. 7260/11175 cut-off events. For 469196/469254 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 71140 event pairs, 1633 based on Foata normal form. 5/10949 useless extension candidates. Maximal degree in co-relation 69876. Up to 9689 conditions per place. [2024-06-27 18:11:24,677 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 236 selfloop transitions, 56 changer transitions 0/312 dead transitions. [2024-06-27 18:11:24,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 312 transitions, 3195 flow [2024-06-27 18:11:24,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 18:11:24,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-06-27 18:11:24,680 INFO L175 Difference]: Start difference. First operand has 187 places, 243 transitions, 2333 flow. Second operand 10 states and 259 transitions. [2024-06-27 18:11:24,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 312 transitions, 3195 flow [2024-06-27 18:11:25,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 312 transitions, 3129 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 18:11:25,201 INFO L231 Difference]: Finished difference. Result has 194 places, 246 transitions, 2449 flow [2024-06-27 18:11:25,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2267, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2449, PETRI_PLACES=194, PETRI_TRANSITIONS=246} [2024-06-27 18:11:25,202 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2024-06-27 18:11:25,202 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 246 transitions, 2449 flow [2024-06-27 18:11:25,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:25,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:25,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:25,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:11:25,203 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:25,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1768163952, now seen corresponding path program 1 times [2024-06-27 18:11:25,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:25,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828423413] [2024-06-27 18:11:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:25,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:26,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828423413] [2024-06-27 18:11:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828423413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:26,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478781758] [2024-06-27 18:11:26,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:26,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:26,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:11:26,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 246 transitions, 2449 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:26,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:26,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:11:26,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:28,418 INFO L124 PetriNetUnfolderBase]: 8011/12245 cut-off events. [2024-06-27 18:11:28,419 INFO L125 PetriNetUnfolderBase]: For 505022/505072 co-relation queries the response was YES. [2024-06-27 18:11:28,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76130 conditions, 12245 events. 8011/12245 cut-off events. For 505022/505072 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 76624 event pairs, 1924 based on Foata normal form. 5/11963 useless extension candidates. Maximal degree in co-relation 76043. Up to 10911 conditions per place. [2024-06-27 18:11:28,547 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 250 selfloop transitions, 40 changer transitions 0/307 dead transitions. [2024-06-27 18:11:28,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 307 transitions, 3288 flow [2024-06-27 18:11:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:11:28,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-06-27 18:11:28,549 INFO L175 Difference]: Start difference. First operand has 194 places, 246 transitions, 2449 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:11:28,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 307 transitions, 3288 flow [2024-06-27 18:11:29,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 307 transitions, 3132 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:29,190 INFO L231 Difference]: Finished difference. Result has 196 places, 251 transitions, 2465 flow [2024-06-27 18:11:29,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2465, PETRI_PLACES=196, PETRI_TRANSITIONS=251} [2024-06-27 18:11:29,191 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 141 predicate places. [2024-06-27 18:11:29,191 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 251 transitions, 2465 flow [2024-06-27 18:11:29,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:29,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:29,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:29,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:11:29,191 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:29,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1536181770, now seen corresponding path program 2 times [2024-06-27 18:11:29,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:29,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177368025] [2024-06-27 18:11:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:29,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:30,782 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 18:11:30,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:30,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177368025] [2024-06-27 18:11:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177368025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:30,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:30,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448719159] [2024-06-27 18:11:30,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:30,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:30,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:30,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:30,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 251 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:30,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:30,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:30,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:32,993 INFO L124 PetriNetUnfolderBase]: 7328/11289 cut-off events. [2024-06-27 18:11:32,994 INFO L125 PetriNetUnfolderBase]: For 504499/504549 co-relation queries the response was YES. [2024-06-27 18:11:33,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71791 conditions, 11289 events. 7328/11289 cut-off events. For 504499/504549 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 71847 event pairs, 1628 based on Foata normal form. 5/11060 useless extension candidates. Maximal degree in co-relation 71702. Up to 9599 conditions per place. [2024-06-27 18:11:33,119 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 227 selfloop transitions, 69 changer transitions 0/317 dead transitions. [2024-06-27 18:11:33,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 317 transitions, 3279 flow [2024-06-27 18:11:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-27 18:11:33,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:11:33,121 INFO L175 Difference]: Start difference. First operand has 196 places, 251 transitions, 2465 flow. Second operand 10 states and 260 transitions. [2024-06-27 18:11:33,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 317 transitions, 3279 flow [2024-06-27 18:11:33,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 317 transitions, 3118 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:33,797 INFO L231 Difference]: Finished difference. Result has 200 places, 251 transitions, 2450 flow [2024-06-27 18:11:33,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2450, PETRI_PLACES=200, PETRI_TRANSITIONS=251} [2024-06-27 18:11:33,798 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 145 predicate places. [2024-06-27 18:11:33,798 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 251 transitions, 2450 flow [2024-06-27 18:11:33,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:33,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:33,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:33,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:11:33,799 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:33,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1536181894, now seen corresponding path program 4 times [2024-06-27 18:11:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:33,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711157093] [2024-06-27 18:11:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:33,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:35,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711157093] [2024-06-27 18:11:35,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711157093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:35,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:35,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584200004] [2024-06-27 18:11:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:35,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:35,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:35,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:35,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 251 transitions, 2450 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:35,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:35,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:35,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:37,492 INFO L124 PetriNetUnfolderBase]: 7359/11392 cut-off events. [2024-06-27 18:11:37,492 INFO L125 PetriNetUnfolderBase]: For 521844/521894 co-relation queries the response was YES. [2024-06-27 18:11:37,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72587 conditions, 11392 events. 7359/11392 cut-off events. For 521844/521894 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 73271 event pairs, 1793 based on Foata normal form. 8/11153 useless extension candidates. Maximal degree in co-relation 72497. Up to 10168 conditions per place. [2024-06-27 18:11:37,614 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 264 selfloop transitions, 29 changer transitions 0/314 dead transitions. [2024-06-27 18:11:37,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 314 transitions, 3296 flow [2024-06-27 18:11:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:11:37,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-06-27 18:11:37,615 INFO L175 Difference]: Start difference. First operand has 200 places, 251 transitions, 2450 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:11:37,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 314 transitions, 3296 flow [2024-06-27 18:11:38,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 314 transitions, 3126 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:38,230 INFO L231 Difference]: Finished difference. Result has 201 places, 253 transitions, 2409 flow [2024-06-27 18:11:38,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2409, PETRI_PLACES=201, PETRI_TRANSITIONS=253} [2024-06-27 18:11:38,231 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 146 predicate places. [2024-06-27 18:11:38,231 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 253 transitions, 2409 flow [2024-06-27 18:11:38,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:38,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:38,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:38,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:11:38,232 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:38,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2110782304, now seen corresponding path program 2 times [2024-06-27 18:11:38,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:38,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828831326] [2024-06-27 18:11:38,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:38,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:39,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:39,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828831326] [2024-06-27 18:11:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828831326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:39,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:39,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:11:39,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750823005] [2024-06-27 18:11:39,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:39,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:11:39,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:39,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:11:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:11:39,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:39,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 253 transitions, 2409 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 18:11:39,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:39,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:39,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:41,013 INFO L124 PetriNetUnfolderBase]: 7565/11759 cut-off events. [2024-06-27 18:11:41,014 INFO L125 PetriNetUnfolderBase]: For 542571/542700 co-relation queries the response was YES. [2024-06-27 18:11:41,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73244 conditions, 11759 events. 7565/11759 cut-off events. For 542571/542700 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 75490 event pairs, 2169 based on Foata normal form. 80/11551 useless extension candidates. Maximal degree in co-relation 73154. Up to 10484 conditions per place. [2024-06-27 18:11:41,134 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 224 selfloop transitions, 21 changer transitions 0/286 dead transitions. [2024-06-27 18:11:41,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 286 transitions, 3033 flow [2024-06-27 18:11:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:11:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:11:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:11:41,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271137026239065 [2024-06-27 18:11:41,135 INFO L175 Difference]: Start difference. First operand has 201 places, 253 transitions, 2409 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:11:41,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 286 transitions, 3033 flow [2024-06-27 18:11:41,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 286 transitions, 2924 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:41,688 INFO L231 Difference]: Finished difference. Result has 201 places, 256 transitions, 2390 flow [2024-06-27 18:11:41,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2300, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2390, PETRI_PLACES=201, PETRI_TRANSITIONS=256} [2024-06-27 18:11:41,689 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 146 predicate places. [2024-06-27 18:11:41,689 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 256 transitions, 2390 flow [2024-06-27 18:11:41,689 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 18:11:41,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:41,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:11:41,690 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:41,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:41,690 INFO L85 PathProgramCache]: Analyzing trace with hash 828273144, now seen corresponding path program 1 times [2024-06-27 18:11:41,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:41,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698389866] [2024-06-27 18:11:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:41,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:42,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:42,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698389866] [2024-06-27 18:11:42,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698389866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:42,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:42,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:11:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294138654] [2024-06-27 18:11:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:11:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:11:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:11:42,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:42,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 256 transitions, 2390 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 18:11:42,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:42,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:42,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:44,431 INFO L124 PetriNetUnfolderBase]: 7661/11894 cut-off events. [2024-06-27 18:11:44,431 INFO L125 PetriNetUnfolderBase]: For 564956/565098 co-relation queries the response was YES. [2024-06-27 18:11:44,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74118 conditions, 11894 events. 7661/11894 cut-off events. For 564956/565098 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 76243 event pairs, 2195 based on Foata normal form. 102/11705 useless extension candidates. Maximal degree in co-relation 74027. Up to 10543 conditions per place. [2024-06-27 18:11:44,537 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 234 selfloop transitions, 26 changer transitions 0/301 dead transitions. [2024-06-27 18:11:44,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 301 transitions, 3220 flow [2024-06-27 18:11:44,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:11:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:11:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:11:44,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:11:44,538 INFO L175 Difference]: Start difference. First operand has 201 places, 256 transitions, 2390 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:11:44,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 301 transitions, 3220 flow [2024-06-27 18:11:44,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 301 transitions, 3158 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:44,891 INFO L231 Difference]: Finished difference. Result has 204 places, 266 transitions, 2509 flow [2024-06-27 18:11:44,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2509, PETRI_PLACES=204, PETRI_TRANSITIONS=266} [2024-06-27 18:11:44,891 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 149 predicate places. [2024-06-27 18:11:44,891 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 266 transitions, 2509 flow [2024-06-27 18:11:44,891 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 18:11:44,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:44,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:44,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:11:44,892 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:44,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1549665718, now seen corresponding path program 3 times [2024-06-27 18:11:44,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:44,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126233362] [2024-06-27 18:11:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:44,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:46,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126233362] [2024-06-27 18:11:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126233362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:46,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:46,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103589310] [2024-06-27 18:11:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:46,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:46,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:46,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 266 transitions, 2509 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:46,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:46,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:46,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:48,641 INFO L124 PetriNetUnfolderBase]: 7551/11731 cut-off events. [2024-06-27 18:11:48,641 INFO L125 PetriNetUnfolderBase]: For 588541/588589 co-relation queries the response was YES. [2024-06-27 18:11:48,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76575 conditions, 11731 events. 7551/11731 cut-off events. For 588541/588589 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 75974 event pairs, 2027 based on Foata normal form. 4/11495 useless extension candidates. Maximal degree in co-relation 76482. Up to 10021 conditions per place. [2024-06-27 18:11:48,745 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 251 selfloop transitions, 56 changer transitions 0/329 dead transitions. [2024-06-27 18:11:48,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 329 transitions, 3389 flow [2024-06-27 18:11:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 18:11:48,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122448979591837 [2024-06-27 18:11:48,747 INFO L175 Difference]: Start difference. First operand has 204 places, 266 transitions, 2509 flow. Second operand 10 states and 251 transitions. [2024-06-27 18:11:48,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 329 transitions, 3389 flow [2024-06-27 18:11:49,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 329 transitions, 3349 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 18:11:49,264 INFO L231 Difference]: Finished difference. Result has 212 places, 269 transitions, 2655 flow [2024-06-27 18:11:49,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2655, PETRI_PLACES=212, PETRI_TRANSITIONS=269} [2024-06-27 18:11:49,264 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2024-06-27 18:11:49,265 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 269 transitions, 2655 flow [2024-06-27 18:11:49,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:49,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:49,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:49,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:11:49,265 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:49,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1549661068, now seen corresponding path program 4 times [2024-06-27 18:11:49,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:49,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900087454] [2024-06-27 18:11:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:50,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900087454] [2024-06-27 18:11:50,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900087454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:50,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:50,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:50,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984570111] [2024-06-27 18:11:50,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:50,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:50,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:50,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 269 transitions, 2655 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:50,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:50,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:50,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:52,613 INFO L124 PetriNetUnfolderBase]: 7541/11687 cut-off events. [2024-06-27 18:11:52,613 INFO L125 PetriNetUnfolderBase]: For 601180/601228 co-relation queries the response was YES. [2024-06-27 18:11:52,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76977 conditions, 11687 events. 7541/11687 cut-off events. For 601180/601228 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 75458 event pairs, 2022 based on Foata normal form. 4/11459 useless extension candidates. Maximal degree in co-relation 76881. Up to 9816 conditions per place. [2024-06-27 18:11:52,712 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 237 selfloop transitions, 63 changer transitions 0/322 dead transitions. [2024-06-27 18:11:52,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 322 transitions, 3629 flow [2024-06-27 18:11:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:11:52,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-27 18:11:52,713 INFO L175 Difference]: Start difference. First operand has 212 places, 269 transitions, 2655 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:11:52,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 322 transitions, 3629 flow [2024-06-27 18:11:53,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 322 transitions, 3433 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:53,231 INFO L231 Difference]: Finished difference. Result has 213 places, 269 transitions, 2599 flow [2024-06-27 18:11:53,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2599, PETRI_PLACES=213, PETRI_TRANSITIONS=269} [2024-06-27 18:11:53,231 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 158 predicate places. [2024-06-27 18:11:53,231 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 269 transitions, 2599 flow [2024-06-27 18:11:53,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:53,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:53,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:53,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:11:53,232 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:53,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1556341072, now seen corresponding path program 2 times [2024-06-27 18:11:53,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:53,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116799363] [2024-06-27 18:11:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:53,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:54,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116799363] [2024-06-27 18:11:54,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116799363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:54,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:54,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:54,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712231046] [2024-06-27 18:11:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:54,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:54,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:54,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:11:54,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 269 transitions, 2599 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:54,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:54,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:11:54,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:56,573 INFO L124 PetriNetUnfolderBase]: 8259/12761 cut-off events. [2024-06-27 18:11:56,573 INFO L125 PetriNetUnfolderBase]: For 630435/630483 co-relation queries the response was YES. [2024-06-27 18:11:56,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82123 conditions, 12761 events. 8259/12761 cut-off events. For 630435/630483 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 81307 event pairs, 2383 based on Foata normal form. 4/12484 useless extension candidates. Maximal degree in co-relation 82026. Up to 11342 conditions per place. [2024-06-27 18:11:56,984 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 274 selfloop transitions, 33 changer transitions 0/325 dead transitions. [2024-06-27 18:11:56,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 325 transitions, 3473 flow [2024-06-27 18:11:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:11:56,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 18:11:56,986 INFO L175 Difference]: Start difference. First operand has 213 places, 269 transitions, 2599 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:11:56,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 325 transitions, 3473 flow [2024-06-27 18:11:57,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 325 transitions, 3342 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:57,503 INFO L231 Difference]: Finished difference. Result has 216 places, 274 transitions, 2639 flow [2024-06-27 18:11:57,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2472, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2639, PETRI_PLACES=216, PETRI_TRANSITIONS=274} [2024-06-27 18:11:57,504 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 161 predicate places. [2024-06-27 18:11:57,504 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 274 transitions, 2639 flow [2024-06-27 18:11:57,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:57,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:57,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:57,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:11:57,504 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:57,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1556094808, now seen corresponding path program 5 times [2024-06-27 18:11:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:57,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402479840] [2024-06-27 18:11:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:57,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:58,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:58,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402479840] [2024-06-27 18:11:58,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402479840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:58,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:58,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131396851] [2024-06-27 18:11:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:58,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:58,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:58,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:11:58,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 274 transitions, 2639 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:58,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:58,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:11:58,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:01,031 INFO L124 PetriNetUnfolderBase]: 7690/11991 cut-off events. [2024-06-27 18:12:01,031 INFO L125 PetriNetUnfolderBase]: For 612138/612186 co-relation queries the response was YES. [2024-06-27 18:12:01,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78559 conditions, 11991 events. 7690/11991 cut-off events. For 612138/612186 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 78263 event pairs, 2104 based on Foata normal form. 6/11741 useless extension candidates. Maximal degree in co-relation 78460. Up to 10451 conditions per place. [2024-06-27 18:12:01,151 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 267 selfloop transitions, 38 changer transitions 0/328 dead transitions. [2024-06-27 18:12:01,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 328 transitions, 3484 flow [2024-06-27 18:12:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:12:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:12:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:12:01,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:12:01,152 INFO L175 Difference]: Start difference. First operand has 216 places, 274 transitions, 2639 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:12:01,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 328 transitions, 3484 flow [2024-06-27 18:12:01,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 328 transitions, 3363 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:01,770 INFO L231 Difference]: Finished difference. Result has 219 places, 277 transitions, 2673 flow [2024-06-27 18:12:01,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2673, PETRI_PLACES=219, PETRI_TRANSITIONS=277} [2024-06-27 18:12:01,770 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 164 predicate places. [2024-06-27 18:12:01,770 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 277 transitions, 2673 flow [2024-06-27 18:12:01,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:01,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:01,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:01,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:12:01,771 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:01,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1549660944, now seen corresponding path program 5 times [2024-06-27 18:12:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083060447] [2024-06-27 18:12:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:02,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:02,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083060447] [2024-06-27 18:12:02,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083060447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:02,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:02,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810938062] [2024-06-27 18:12:02,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:02,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:02,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:03,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:12:03,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 277 transitions, 2673 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:03,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:03,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:12:03,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:05,399 INFO L124 PetriNetUnfolderBase]: 7688/12011 cut-off events. [2024-06-27 18:12:05,399 INFO L125 PetriNetUnfolderBase]: For 621843/621891 co-relation queries the response was YES. [2024-06-27 18:12:05,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78616 conditions, 12011 events. 7688/12011 cut-off events. For 621843/621891 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 78664 event pairs, 2152 based on Foata normal form. 4/11746 useless extension candidates. Maximal degree in co-relation 78516. Up to 10657 conditions per place. [2024-06-27 18:12:05,521 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 288 selfloop transitions, 24 changer transitions 0/335 dead transitions. [2024-06-27 18:12:05,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 335 transitions, 3551 flow [2024-06-27 18:12:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 18:12:05,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-06-27 18:12:05,522 INFO L175 Difference]: Start difference. First operand has 219 places, 277 transitions, 2673 flow. Second operand 10 states and 242 transitions. [2024-06-27 18:12:05,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 335 transitions, 3551 flow [2024-06-27 18:12:06,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 335 transitions, 3437 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:06,205 INFO L231 Difference]: Finished difference. Result has 222 places, 279 transitions, 2684 flow [2024-06-27 18:12:06,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2684, PETRI_PLACES=222, PETRI_TRANSITIONS=279} [2024-06-27 18:12:06,205 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 167 predicate places. [2024-06-27 18:12:06,205 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 279 transitions, 2684 flow [2024-06-27 18:12:06,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:06,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:06,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:06,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:12:06,206 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:06,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:06,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2089602320, now seen corresponding path program 3 times [2024-06-27 18:12:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:06,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605947790] [2024-06-27 18:12:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:07,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:07,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605947790] [2024-06-27 18:12:07,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605947790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:07,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:07,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:12:07,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814680887] [2024-06-27 18:12:07,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:07,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:12:07,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:07,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:12:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:12:07,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:12:07,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 279 transitions, 2684 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:07,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:07,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:12:07,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:09,569 INFO L124 PetriNetUnfolderBase]: 8365/12941 cut-off events. [2024-06-27 18:12:09,569 INFO L125 PetriNetUnfolderBase]: For 657291/657339 co-relation queries the response was YES. [2024-06-27 18:12:09,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84045 conditions, 12941 events. 8365/12941 cut-off events. For 657291/657339 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 82777 event pairs, 2434 based on Foata normal form. 4/12657 useless extension candidates. Maximal degree in co-relation 83944. Up to 11608 conditions per place. [2024-06-27 18:12:09,683 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 285 selfloop transitions, 23 changer transitions 0/326 dead transitions. [2024-06-27 18:12:09,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 326 transitions, 3496 flow [2024-06-27 18:12:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:12:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:12:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 18:12:09,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47392290249433106 [2024-06-27 18:12:09,684 INFO L175 Difference]: Start difference. First operand has 222 places, 279 transitions, 2684 flow. Second operand 9 states and 209 transitions. [2024-06-27 18:12:09,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 326 transitions, 3496 flow [2024-06-27 18:12:10,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 326 transitions, 3369 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:10,220 INFO L231 Difference]: Finished difference. Result has 223 places, 281 transitions, 2680 flow [2024-06-27 18:12:10,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2680, PETRI_PLACES=223, PETRI_TRANSITIONS=281} [2024-06-27 18:12:10,220 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 168 predicate places. [2024-06-27 18:12:10,220 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 281 transitions, 2680 flow [2024-06-27 18:12:10,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:10,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:10,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:10,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:12:10,221 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:10,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2089890310, now seen corresponding path program 1 times [2024-06-27 18:12:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:10,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576809741] [2024-06-27 18:12:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:11,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576809741] [2024-06-27 18:12:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576809741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:11,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155943326] [2024-06-27 18:12:11,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:11,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:11,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:12:11,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 281 transitions, 2680 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:11,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:11,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:12:11,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:13,640 INFO L124 PetriNetUnfolderBase]: 8381/12975 cut-off events. [2024-06-27 18:12:13,640 INFO L125 PetriNetUnfolderBase]: For 668138/668174 co-relation queries the response was YES. [2024-06-27 18:12:13,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84529 conditions, 12975 events. 8381/12975 cut-off events. For 668138/668174 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 83043 event pairs, 2384 based on Foata normal form. 2/12720 useless extension candidates. Maximal degree in co-relation 84427. Up to 11576 conditions per place. [2024-06-27 18:12:13,782 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 281 selfloop transitions, 33 changer transitions 0/332 dead transitions. [2024-06-27 18:12:13,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 332 transitions, 3536 flow [2024-06-27 18:12:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:12:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:12:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:12:13,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47845804988662133 [2024-06-27 18:12:13,783 INFO L175 Difference]: Start difference. First operand has 223 places, 281 transitions, 2680 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:12:13,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 332 transitions, 3536 flow [2024-06-27 18:12:14,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 332 transitions, 3432 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:14,893 INFO L231 Difference]: Finished difference. Result has 226 places, 287 transitions, 2762 flow [2024-06-27 18:12:14,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2762, PETRI_PLACES=226, PETRI_TRANSITIONS=287} [2024-06-27 18:12:14,894 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 171 predicate places. [2024-06-27 18:12:14,894 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 287 transitions, 2762 flow [2024-06-27 18:12:14,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:14,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:14,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:12:14,895 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:14,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2100615380, now seen corresponding path program 4 times [2024-06-27 18:12:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:14,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906422296] [2024-06-27 18:12:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:15,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906422296] [2024-06-27 18:12:15,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906422296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:15,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:15,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:15,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234650592] [2024-06-27 18:12:15,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:15,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:15,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:16,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:12:16,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 287 transitions, 2762 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:16,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:16,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:12:16,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:18,325 INFO L124 PetriNetUnfolderBase]: 8418/13034 cut-off events. [2024-06-27 18:12:18,325 INFO L125 PetriNetUnfolderBase]: For 695745/695781 co-relation queries the response was YES. [2024-06-27 18:12:18,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86034 conditions, 13034 events. 8418/13034 cut-off events. For 695745/695781 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 83497 event pairs, 2419 based on Foata normal form. 4/12780 useless extension candidates. Maximal degree in co-relation 85931. Up to 11623 conditions per place. [2024-06-27 18:12:18,457 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 285 selfloop transitions, 31 changer transitions 0/334 dead transitions. [2024-06-27 18:12:18,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 334 transitions, 3596 flow [2024-06-27 18:12:18,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:12:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:12:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:12:18,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:12:18,459 INFO L175 Difference]: Start difference. First operand has 226 places, 287 transitions, 2762 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:12:18,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 334 transitions, 3596 flow [2024-06-27 18:12:19,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 334 transitions, 3484 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:19,281 INFO L231 Difference]: Finished difference. Result has 228 places, 289 transitions, 2798 flow [2024-06-27 18:12:19,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2798, PETRI_PLACES=228, PETRI_TRANSITIONS=289} [2024-06-27 18:12:19,281 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 173 predicate places. [2024-06-27 18:12:19,281 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 289 transitions, 2798 flow [2024-06-27 18:12:19,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:19,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:19,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:19,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:12:19,282 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:19,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1776550556, now seen corresponding path program 6 times [2024-06-27 18:12:19,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:19,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245763784] [2024-06-27 18:12:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:19,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:20,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:20,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245763784] [2024-06-27 18:12:20,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245763784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:20,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:20,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:20,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807470235] [2024-06-27 18:12:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:20,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:20,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:20,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:12:20,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 289 transitions, 2798 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:20,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:20,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:12:20,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:22,840 INFO L124 PetriNetUnfolderBase]: 7702/12042 cut-off events. [2024-06-27 18:12:22,841 INFO L125 PetriNetUnfolderBase]: For 701235/701271 co-relation queries the response was YES. [2024-06-27 18:12:22,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81188 conditions, 12042 events. 7702/12042 cut-off events. For 701235/701271 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 78930 event pairs, 2062 based on Foata normal form. 6/11817 useless extension candidates. Maximal degree in co-relation 81084. Up to 10470 conditions per place. [2024-06-27 18:12:22,953 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 280 selfloop transitions, 34 changer transitions 0/337 dead transitions. [2024-06-27 18:12:22,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 337 transitions, 3578 flow [2024-06-27 18:12:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:12:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:12:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:12:22,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011337868480725 [2024-06-27 18:12:22,955 INFO L175 Difference]: Start difference. First operand has 228 places, 289 transitions, 2798 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:12:22,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 337 transitions, 3578 flow [2024-06-27 18:12:23,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 337 transitions, 3414 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:23,842 INFO L231 Difference]: Finished difference. Result has 230 places, 289 transitions, 2713 flow [2024-06-27 18:12:23,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2713, PETRI_PLACES=230, PETRI_TRANSITIONS=289} [2024-06-27 18:12:23,843 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 175 predicate places. [2024-06-27 18:12:23,843 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 289 transitions, 2713 flow [2024-06-27 18:12:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:23,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:23,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:23,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:12:23,844 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:23,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1776796820, now seen corresponding path program 5 times [2024-06-27 18:12:23,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:23,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550568292] [2024-06-27 18:12:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:24,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:24,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550568292] [2024-06-27 18:12:24,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550568292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:24,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:24,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003968693] [2024-06-27 18:12:24,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:24,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:25,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:12:25,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 289 transitions, 2713 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:25,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:25,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:12:25,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:27,602 INFO L124 PetriNetUnfolderBase]: 8440/13082 cut-off events. [2024-06-27 18:12:27,602 INFO L125 PetriNetUnfolderBase]: For 703009/703045 co-relation queries the response was YES. [2024-06-27 18:12:27,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85859 conditions, 13082 events. 8440/13082 cut-off events. For 703009/703045 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 83952 event pairs, 2382 based on Foata normal form. 4/12824 useless extension candidates. Maximal degree in co-relation 85754. Up to 11670 conditions per place. [2024-06-27 18:12:27,711 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 296 selfloop transitions, 28 changer transitions 0/342 dead transitions. [2024-06-27 18:12:27,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 342 transitions, 3617 flow [2024-06-27 18:12:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:12:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:12:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:12:27,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-27 18:12:27,713 INFO L175 Difference]: Start difference. First operand has 230 places, 289 transitions, 2713 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:12:27,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 342 transitions, 3617 flow [2024-06-27 18:12:28,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 342 transitions, 3484 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:28,510 INFO L231 Difference]: Finished difference. Result has 231 places, 294 transitions, 2763 flow [2024-06-27 18:12:28,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2763, PETRI_PLACES=231, PETRI_TRANSITIONS=294} [2024-06-27 18:12:28,511 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 176 predicate places. [2024-06-27 18:12:28,511 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 294 transitions, 2763 flow [2024-06-27 18:12:28,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:28,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:28,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:28,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:12:28,512 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:28,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1038418124, now seen corresponding path program 6 times [2024-06-27 18:12:28,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:28,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567098976] [2024-06-27 18:12:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:29,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:29,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567098976] [2024-06-27 18:12:29,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567098976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:29,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:29,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237981171] [2024-06-27 18:12:29,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:29,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:29,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:29,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:29,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:29,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:12:29,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 294 transitions, 2763 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:29,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:29,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:12:29,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:32,053 INFO L124 PetriNetUnfolderBase]: 8448/13124 cut-off events. [2024-06-27 18:12:32,053 INFO L125 PetriNetUnfolderBase]: For 723932/723976 co-relation queries the response was YES. [2024-06-27 18:12:32,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86825 conditions, 13124 events. 8448/13124 cut-off events. For 723932/723976 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 84566 event pairs, 2360 based on Foata normal form. 4/12854 useless extension candidates. Maximal degree in co-relation 86718. Up to 11719 conditions per place. [2024-06-27 18:12:32,189 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 298 selfloop transitions, 26 changer transitions 0/342 dead transitions. [2024-06-27 18:12:32,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 342 transitions, 3621 flow [2024-06-27 18:12:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:12:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:12:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 18:12:32,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47165532879818595 [2024-06-27 18:12:32,190 INFO L175 Difference]: Start difference. First operand has 231 places, 294 transitions, 2763 flow. Second operand 9 states and 208 transitions. [2024-06-27 18:12:32,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 342 transitions, 3621 flow [2024-06-27 18:12:33,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 342 transitions, 3490 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:33,120 INFO L231 Difference]: Finished difference. Result has 235 places, 299 transitions, 2803 flow [2024-06-27 18:12:33,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2803, PETRI_PLACES=235, PETRI_TRANSITIONS=299} [2024-06-27 18:12:33,121 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 180 predicate places. [2024-06-27 18:12:33,121 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 299 transitions, 2803 flow [2024-06-27 18:12:33,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:33,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:33,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:33,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:12:33,121 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:33,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1127590632, now seen corresponding path program 2 times [2024-06-27 18:12:33,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:33,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957070912] [2024-06-27 18:12:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:33,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:33,883 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 18:12:33,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:33,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957070912] [2024-06-27 18:12:33,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957070912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:33,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:33,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:33,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603483519] [2024-06-27 18:12:33,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:33,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:33,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:34,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:12:34,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 299 transitions, 2803 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 18:12:34,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:34,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:12:34,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:36,209 INFO L124 PetriNetUnfolderBase]: 8051/12633 cut-off events. [2024-06-27 18:12:36,209 INFO L125 PetriNetUnfolderBase]: For 747328/747487 co-relation queries the response was YES. [2024-06-27 18:12:36,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83841 conditions, 12633 events. 8051/12633 cut-off events. For 747328/747487 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 82881 event pairs, 2491 based on Foata normal form. 105/12445 useless extension candidates. Maximal degree in co-relation 83732. Up to 11119 conditions per place. [2024-06-27 18:12:36,331 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 263 selfloop transitions, 22 changer transitions 0/329 dead transitions. [2024-06-27 18:12:36,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 329 transitions, 3629 flow [2024-06-27 18:12:36,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:12:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:12:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:12:36,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868804664723032 [2024-06-27 18:12:36,332 INFO L175 Difference]: Start difference. First operand has 235 places, 299 transitions, 2803 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:12:36,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 329 transitions, 3629 flow [2024-06-27 18:12:37,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 329 transitions, 3500 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:37,223 INFO L231 Difference]: Finished difference. Result has 236 places, 302 transitions, 2768 flow [2024-06-27 18:12:37,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2768, PETRI_PLACES=236, PETRI_TRANSITIONS=302} [2024-06-27 18:12:37,224 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-27 18:12:37,224 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 302 transitions, 2768 flow [2024-06-27 18:12:37,224 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 18:12:37,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:37,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:37,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:12:37,225 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:37,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:37,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1270178950, now seen corresponding path program 3 times [2024-06-27 18:12:37,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:37,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715837846] [2024-06-27 18:12:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:37,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:38,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:38,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715837846] [2024-06-27 18:12:38,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715837846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:38,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:38,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:38,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580216612] [2024-06-27 18:12:38,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:38,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:38,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:38,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:38,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:38,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:12:38,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 302 transitions, 2768 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 18:12:38,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:38,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:12:38,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:40,220 INFO L124 PetriNetUnfolderBase]: 8045/12635 cut-off events. [2024-06-27 18:12:40,220 INFO L125 PetriNetUnfolderBase]: For 756079/756238 co-relation queries the response was YES. [2024-06-27 18:12:40,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83561 conditions, 12635 events. 8045/12635 cut-off events. For 756079/756238 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 82922 event pairs, 2485 based on Foata normal form. 104/12444 useless extension candidates. Maximal degree in co-relation 83451. Up to 11177 conditions per place. [2024-06-27 18:12:40,359 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 264 selfloop transitions, 16 changer transitions 0/324 dead transitions. [2024-06-27 18:12:40,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 324 transitions, 3404 flow [2024-06-27 18:12:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:12:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:12:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:12:40,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-27 18:12:40,360 INFO L175 Difference]: Start difference. First operand has 236 places, 302 transitions, 2768 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:12:40,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 324 transitions, 3404 flow [2024-06-27 18:12:41,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 324 transitions, 3295 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:12:41,473 INFO L231 Difference]: Finished difference. Result has 238 places, 302 transitions, 2697 flow [2024-06-27 18:12:41,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2697, PETRI_PLACES=238, PETRI_TRANSITIONS=302} [2024-06-27 18:12:41,474 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 183 predicate places. [2024-06-27 18:12:41,474 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 302 transitions, 2697 flow [2024-06-27 18:12:41,474 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 18:12:41,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:41,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:41,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:12:41,475 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:41,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1270683444, now seen corresponding path program 3 times [2024-06-27 18:12:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486794518] [2024-06-27 18:12:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:41,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486794518] [2024-06-27 18:12:42,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486794518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:42,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:42,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476502467] [2024-06-27 18:12:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:42,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:42,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:42,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:12:42,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 302 transitions, 2697 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 18:12:42,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:42,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:12:42,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:44,414 INFO L124 PetriNetUnfolderBase]: 8036/12625 cut-off events. [2024-06-27 18:12:44,414 INFO L125 PetriNetUnfolderBase]: For 767649/767808 co-relation queries the response was YES. [2024-06-27 18:12:44,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83163 conditions, 12625 events. 8036/12625 cut-off events. For 767649/767808 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 82868 event pairs, 2487 based on Foata normal form. 105/12434 useless extension candidates. Maximal degree in co-relation 83053. Up to 11147 conditions per place. [2024-06-27 18:12:44,535 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 263 selfloop transitions, 17 changer transitions 0/324 dead transitions. [2024-06-27 18:12:44,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 324 transitions, 3321 flow [2024-06-27 18:12:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:12:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:12:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 18:12:44,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-27 18:12:44,537 INFO L175 Difference]: Start difference. First operand has 238 places, 302 transitions, 2697 flow. Second operand 7 states and 161 transitions. [2024-06-27 18:12:44,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 324 transitions, 3321 flow [2024-06-27 18:12:45,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 324 transitions, 3245 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:45,582 INFO L231 Difference]: Finished difference. Result has 239 places, 302 transitions, 2661 flow [2024-06-27 18:12:45,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2621, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2661, PETRI_PLACES=239, PETRI_TRANSITIONS=302} [2024-06-27 18:12:45,582 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 184 predicate places. [2024-06-27 18:12:45,582 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 302 transitions, 2661 flow [2024-06-27 18:12:45,582 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 18:12:45,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:45,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:12:45,583 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:45,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:45,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1063621052, now seen corresponding path program 1 times [2024-06-27 18:12:45,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:45,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998297252] [2024-06-27 18:12:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:45,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:46,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:46,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998297252] [2024-06-27 18:12:46,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998297252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:46,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:46,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399827382] [2024-06-27 18:12:46,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:46,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:46,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:46,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:46,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:46,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:12:46,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 302 transitions, 2661 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:46,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:46,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:12:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:48,603 INFO L124 PetriNetUnfolderBase]: 8988/13818 cut-off events. [2024-06-27 18:12:48,603 INFO L125 PetriNetUnfolderBase]: For 781440/781440 co-relation queries the response was YES. [2024-06-27 18:12:48,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89889 conditions, 13818 events. 8988/13818 cut-off events. For 781440/781440 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 87966 event pairs, 2644 based on Foata normal form. 1/13542 useless extension candidates. Maximal degree in co-relation 89778. Up to 12618 conditions per place. [2024-06-27 18:12:48,752 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 298 selfloop transitions, 34 changer transitions 0/340 dead transitions. [2024-06-27 18:12:48,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 340 transitions, 3639 flow [2024-06-27 18:12:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:12:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:12:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:12:48,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-27 18:12:48,753 INFO L175 Difference]: Start difference. First operand has 239 places, 302 transitions, 2661 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:12:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 340 transitions, 3639 flow [2024-06-27 18:12:49,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 340 transitions, 3590 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:49,750 INFO L231 Difference]: Finished difference. Result has 240 places, 308 transitions, 2765 flow [2024-06-27 18:12:49,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2612, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2765, PETRI_PLACES=240, PETRI_TRANSITIONS=308} [2024-06-27 18:12:49,751 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2024-06-27 18:12:49,751 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 308 transitions, 2765 flow [2024-06-27 18:12:49,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:49,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:49,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:49,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:12:49,751 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:49,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2118379443, now seen corresponding path program 1 times [2024-06-27 18:12:49,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:49,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640624102] [2024-06-27 18:12:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:49,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:50,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640624102] [2024-06-27 18:12:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640624102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:50,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:50,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180000132] [2024-06-27 18:12:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:50,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:12:50,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 308 transitions, 2765 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:50,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:50,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:12:50,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:52,914 INFO L124 PetriNetUnfolderBase]: 9039/13804 cut-off events. [2024-06-27 18:12:52,914 INFO L125 PetriNetUnfolderBase]: For 811492/811492 co-relation queries the response was YES. [2024-06-27 18:12:53,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91764 conditions, 13804 events. 9039/13804 cut-off events. For 811492/811492 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 86863 event pairs, 2641 based on Foata normal form. 3/13551 useless extension candidates. Maximal degree in co-relation 91652. Up to 12611 conditions per place. [2024-06-27 18:12:53,070 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 310 selfloop transitions, 32 changer transitions 0/350 dead transitions. [2024-06-27 18:12:53,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 350 transitions, 3811 flow [2024-06-27 18:12:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:12:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:12:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:12:53,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478134110787172 [2024-06-27 18:12:53,071 INFO L175 Difference]: Start difference. First operand has 240 places, 308 transitions, 2765 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:12:53,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 350 transitions, 3811 flow [2024-06-27 18:12:54,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 350 transitions, 3738 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 18:12:54,269 INFO L231 Difference]: Finished difference. Result has 244 places, 314 transitions, 2860 flow [2024-06-27 18:12:54,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2860, PETRI_PLACES=244, PETRI_TRANSITIONS=314} [2024-06-27 18:12:54,270 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 189 predicate places. [2024-06-27 18:12:54,270 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 314 transitions, 2860 flow [2024-06-27 18:12:54,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:54,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:54,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:54,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:12:54,270 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:54,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash 285840706, now seen corresponding path program 2 times [2024-06-27 18:12:54,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:54,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821031775] [2024-06-27 18:12:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:54,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:55,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:55,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821031775] [2024-06-27 18:12:55,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821031775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:55,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:55,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:55,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811112062] [2024-06-27 18:12:55,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:55,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:55,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:12:55,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 314 transitions, 2860 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:55,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:55,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:12:55,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:57,546 INFO L124 PetriNetUnfolderBase]: 9056/13926 cut-off events. [2024-06-27 18:12:57,546 INFO L125 PetriNetUnfolderBase]: For 829637/829637 co-relation queries the response was YES. [2024-06-27 18:12:57,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92664 conditions, 13926 events. 9056/13926 cut-off events. For 829637/829637 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 88830 event pairs, 2649 based on Foata normal form. 1/13646 useless extension candidates. Maximal degree in co-relation 92550. Up to 12705 conditions per place. [2024-06-27 18:12:57,688 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 302 selfloop transitions, 36 changer transitions 0/346 dead transitions. [2024-06-27 18:12:57,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 346 transitions, 3802 flow [2024-06-27 18:12:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:12:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:12:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:12:57,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606413994169096 [2024-06-27 18:12:57,689 INFO L175 Difference]: Start difference. First operand has 244 places, 314 transitions, 2860 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:12:57,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 346 transitions, 3802 flow [2024-06-27 18:12:58,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 346 transitions, 3737 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 18:12:58,814 INFO L231 Difference]: Finished difference. Result has 248 places, 317 transitions, 2901 flow [2024-06-27 18:12:58,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2901, PETRI_PLACES=248, PETRI_TRANSITIONS=317} [2024-06-27 18:12:58,814 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 193 predicate places. [2024-06-27 18:12:58,814 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 317 transitions, 2901 flow [2024-06-27 18:12:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:58,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:58,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:58,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:12:58,814 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:58,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1282648603, now seen corresponding path program 2 times [2024-06-27 18:12:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:58,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802710040] [2024-06-27 18:12:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:59,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:59,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802710040] [2024-06-27 18:12:59,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802710040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:59,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:59,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:59,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97397862] [2024-06-27 18:12:59,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:59,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:59,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:59,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:59,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:59,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:12:59,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 317 transitions, 2901 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:59,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:59,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:12:59,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:02,176 INFO L124 PetriNetUnfolderBase]: 9107/13886 cut-off events. [2024-06-27 18:13:02,176 INFO L125 PetriNetUnfolderBase]: For 853180/853186 co-relation queries the response was YES. [2024-06-27 18:13:02,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93192 conditions, 13886 events. 9107/13886 cut-off events. For 853180/853186 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 87243 event pairs, 2648 based on Foata normal form. 7/13640 useless extension candidates. Maximal degree in co-relation 93076. Up to 12676 conditions per place. [2024-06-27 18:13:02,307 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 306 selfloop transitions, 36 changer transitions 0/350 dead transitions. [2024-06-27 18:13:02,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 350 transitions, 3877 flow [2024-06-27 18:13:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:13:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:13:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:13:02,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606413994169096 [2024-06-27 18:13:02,308 INFO L175 Difference]: Start difference. First operand has 248 places, 317 transitions, 2901 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:13:02,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 350 transitions, 3877 flow [2024-06-27 18:13:03,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 350 transitions, 3812 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:13:03,329 INFO L231 Difference]: Finished difference. Result has 251 places, 320 transitions, 2963 flow [2024-06-27 18:13:03,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2963, PETRI_PLACES=251, PETRI_TRANSITIONS=320} [2024-06-27 18:13:03,329 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 196 predicate places. [2024-06-27 18:13:03,329 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 320 transitions, 2963 flow [2024-06-27 18:13:03,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:03,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:03,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:03,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:13:03,330 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:03,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1270424222, now seen corresponding path program 3 times [2024-06-27 18:13:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:03,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236423684] [2024-06-27 18:13:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:04,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:04,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236423684] [2024-06-27 18:13:04,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236423684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:04,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:04,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:13:04,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876145758] [2024-06-27 18:13:04,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:04,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:13:04,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:04,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:13:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:13:04,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:13:04,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 320 transitions, 2963 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:04,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:04,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:13:04,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:06,664 INFO L124 PetriNetUnfolderBase]: 9104/13984 cut-off events. [2024-06-27 18:13:06,664 INFO L125 PetriNetUnfolderBase]: For 867075/867081 co-relation queries the response was YES. [2024-06-27 18:13:06,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93626 conditions, 13984 events. 9104/13984 cut-off events. For 867075/867081 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 89030 event pairs, 2680 based on Foata normal form. 2/13708 useless extension candidates. Maximal degree in co-relation 93509. Up to 12771 conditions per place. [2024-06-27 18:13:06,817 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 301 selfloop transitions, 36 changer transitions 0/345 dead transitions. [2024-06-27 18:13:06,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 345 transitions, 3733 flow [2024-06-27 18:13:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:13:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:13:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:13:06,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-06-27 18:13:06,818 INFO L175 Difference]: Start difference. First operand has 251 places, 320 transitions, 2963 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:13:06,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 345 transitions, 3733 flow [2024-06-27 18:13:08,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 345 transitions, 3621 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 18:13:08,064 INFO L231 Difference]: Finished difference. Result has 254 places, 320 transitions, 2929 flow [2024-06-27 18:13:08,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2929, PETRI_PLACES=254, PETRI_TRANSITIONS=320} [2024-06-27 18:13:08,064 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 199 predicate places. [2024-06-27 18:13:08,064 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 320 transitions, 2929 flow [2024-06-27 18:13:08,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:08,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:08,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:08,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:13:08,065 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:08,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1270424439, now seen corresponding path program 3 times [2024-06-27 18:13:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108311312] [2024-06-27 18:13:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:08,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:08,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108311312] [2024-06-27 18:13:08,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108311312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:08,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:08,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:13:08,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762616696] [2024-06-27 18:13:08,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:08,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:13:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:13:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:13:08,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:13:08,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 320 transitions, 2929 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:08,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:08,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:13:08,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:11,677 INFO L124 PetriNetUnfolderBase]: 9095/13874 cut-off events. [2024-06-27 18:13:11,677 INFO L125 PetriNetUnfolderBase]: For 882139/882145 co-relation queries the response was YES. [2024-06-27 18:13:11,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93032 conditions, 13874 events. 9095/13874 cut-off events. For 882139/882145 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 87200 event pairs, 2648 based on Foata normal form. 7/13627 useless extension candidates. Maximal degree in co-relation 92914. Up to 12665 conditions per place. [2024-06-27 18:13:11,862 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 308 selfloop transitions, 35 changer transitions 0/351 dead transitions. [2024-06-27 18:13:11,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 351 transitions, 3729 flow [2024-06-27 18:13:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:13:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:13:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:13:11,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-27 18:13:11,864 INFO L175 Difference]: Start difference. First operand has 254 places, 320 transitions, 2929 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:13:11,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 351 transitions, 3729 flow [2024-06-27 18:13:13,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 351 transitions, 3590 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:13,078 INFO L231 Difference]: Finished difference. Result has 253 places, 320 transitions, 2866 flow [2024-06-27 18:13:13,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2866, PETRI_PLACES=253, PETRI_TRANSITIONS=320} [2024-06-27 18:13:13,078 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 198 predicate places. [2024-06-27 18:13:13,078 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 320 transitions, 2866 flow [2024-06-27 18:13:13,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:13,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:13,079 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 18:13:13,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:13:13,079 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:13,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:13,080 INFO L85 PathProgramCache]: Analyzing trace with hash 606938662, now seen corresponding path program 1 times [2024-06-27 18:13:13,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:13,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535650554] [2024-06-27 18:13:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:14,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:14,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535650554] [2024-06-27 18:13:14,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535650554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:14,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:14,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990556870] [2024-06-27 18:13:14,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:14,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:14,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:14,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:14,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:14,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:13:14,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 320 transitions, 2866 flow. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:14,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:14,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:13:14,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:17,580 INFO L124 PetriNetUnfolderBase]: 8468/13392 cut-off events. [2024-06-27 18:13:17,580 INFO L125 PetriNetUnfolderBase]: For 1003804/1003848 co-relation queries the response was YES. [2024-06-27 18:13:17,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93623 conditions, 13392 events. 8468/13392 cut-off events. For 1003804/1003848 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 89602 event pairs, 1691 based on Foata normal form. 16/13037 useless extension candidates. Maximal degree in co-relation 93505. Up to 11001 conditions per place. [2024-06-27 18:13:17,743 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 361 selfloop transitions, 34 changer transitions 0/425 dead transitions. [2024-06-27 18:13:17,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 425 transitions, 4440 flow [2024-06-27 18:13:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:13:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:13:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 318 transitions. [2024-06-27 18:13:17,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 18:13:17,744 INFO L175 Difference]: Start difference. First operand has 253 places, 320 transitions, 2866 flow. Second operand 12 states and 318 transitions. [2024-06-27 18:13:17,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 425 transitions, 4440 flow [2024-06-27 18:13:18,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 425 transitions, 4339 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:13:18,684 INFO L231 Difference]: Finished difference. Result has 259 places, 325 transitions, 2989 flow [2024-06-27 18:13:18,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2989, PETRI_PLACES=259, PETRI_TRANSITIONS=325} [2024-06-27 18:13:18,684 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 204 predicate places. [2024-06-27 18:13:18,684 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 325 transitions, 2989 flow [2024-06-27 18:13:18,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:18,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:18,685 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 18:13:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:13:18,685 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:18,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -582590494, now seen corresponding path program 2 times [2024-06-27 18:13:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500469261] [2024-06-27 18:13:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:20,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:20,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500469261] [2024-06-27 18:13:20,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500469261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:20,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:20,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:20,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079520364] [2024-06-27 18:13:20,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:20,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:20,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:20,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:20,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:13:20,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 325 transitions, 2989 flow. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:20,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:20,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:13:20,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:23,378 INFO L124 PetriNetUnfolderBase]: 8542/13502 cut-off events. [2024-06-27 18:13:23,379 INFO L125 PetriNetUnfolderBase]: For 1048900/1048944 co-relation queries the response was YES. [2024-06-27 18:13:23,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95981 conditions, 13502 events. 8542/13502 cut-off events. For 1048900/1048944 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 90835 event pairs, 2056 based on Foata normal form. 24/13171 useless extension candidates. Maximal degree in co-relation 95861. Up to 11466 conditions per place. [2024-06-27 18:13:23,633 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 366 selfloop transitions, 31 changer transitions 0/427 dead transitions. [2024-06-27 18:13:23,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 427 transitions, 4245 flow [2024-06-27 18:13:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:13:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:13:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 333 transitions. [2024-06-27 18:13:23,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227629513343799 [2024-06-27 18:13:23,635 INFO L175 Difference]: Start difference. First operand has 259 places, 325 transitions, 2989 flow. Second operand 13 states and 333 transitions. [2024-06-27 18:13:23,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 427 transitions, 4245 flow [2024-06-27 18:13:25,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 427 transitions, 4159 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:25,153 INFO L231 Difference]: Finished difference. Result has 266 places, 326 transitions, 3033 flow [2024-06-27 18:13:25,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3033, PETRI_PLACES=266, PETRI_TRANSITIONS=326} [2024-06-27 18:13:25,153 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 211 predicate places. [2024-06-27 18:13:25,154 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 326 transitions, 3033 flow [2024-06-27 18:13:25,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:25,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:25,154 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 18:13:25,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:13:25,154 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:25,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash 608812612, now seen corresponding path program 3 times [2024-06-27 18:13:25,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:25,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899325594] [2024-06-27 18:13:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:25,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:26,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899325594] [2024-06-27 18:13:26,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899325594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:26,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:26,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783497445] [2024-06-27 18:13:26,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:26,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:26,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:26,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:13:26,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 326 transitions, 3033 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:26,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:26,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:13:26,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:29,445 INFO L124 PetriNetUnfolderBase]: 8514/13427 cut-off events. [2024-06-27 18:13:29,445 INFO L125 PetriNetUnfolderBase]: For 1012361/1012405 co-relation queries the response was YES. [2024-06-27 18:13:29,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94000 conditions, 13427 events. 8514/13427 cut-off events. For 1012361/1012405 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 90015 event pairs, 1991 based on Foata normal form. 16/13099 useless extension candidates. Maximal degree in co-relation 93878. Up to 11216 conditions per place. [2024-06-27 18:13:29,628 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 344 selfloop transitions, 29 changer transitions 0/403 dead transitions. [2024-06-27 18:13:29,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 403 transitions, 4099 flow [2024-06-27 18:13:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-27 18:13:29,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536734693877551 [2024-06-27 18:13:29,630 INFO L175 Difference]: Start difference. First operand has 266 places, 326 transitions, 3033 flow. Second operand 10 states and 263 transitions. [2024-06-27 18:13:29,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 403 transitions, 4099 flow [2024-06-27 18:13:30,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 403 transitions, 3955 flow, removed 29 selfloop flow, removed 13 redundant places. [2024-06-27 18:13:30,985 INFO L231 Difference]: Finished difference. Result has 263 places, 326 transitions, 2953 flow [2024-06-27 18:13:30,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2889, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2953, PETRI_PLACES=263, PETRI_TRANSITIONS=326} [2024-06-27 18:13:30,986 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 208 predicate places. [2024-06-27 18:13:30,986 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 326 transitions, 2953 flow [2024-06-27 18:13:30,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:30,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:30,986 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 18:13:30,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:13:30,986 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:30,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:30,987 INFO L85 PathProgramCache]: Analyzing trace with hash -19926354, now seen corresponding path program 4 times [2024-06-27 18:13:30,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:30,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652612991] [2024-06-27 18:13:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:30,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:32,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:32,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652612991] [2024-06-27 18:13:32,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652612991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:32,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:32,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457105362] [2024-06-27 18:13:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:32,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:33,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:13:33,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 326 transitions, 2953 flow. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:33,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:33,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:13:33,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:36,047 INFO L124 PetriNetUnfolderBase]: 8720/13667 cut-off events. [2024-06-27 18:13:36,047 INFO L125 PetriNetUnfolderBase]: For 1054527/1054577 co-relation queries the response was YES. [2024-06-27 18:13:36,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95910 conditions, 13667 events. 8720/13667 cut-off events. For 1054527/1054577 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 91437 event pairs, 1700 based on Foata normal form. 25/13362 useless extension candidates. Maximal degree in co-relation 95788. Up to 10715 conditions per place. [2024-06-27 18:13:36,215 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 279 selfloop transitions, 106 changer transitions 0/415 dead transitions. [2024-06-27 18:13:36,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 415 transitions, 4177 flow [2024-06-27 18:13:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-06-27 18:13:36,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398886827458256 [2024-06-27 18:13:36,216 INFO L175 Difference]: Start difference. First operand has 263 places, 326 transitions, 2953 flow. Second operand 11 states and 291 transitions. [2024-06-27 18:13:36,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 415 transitions, 4177 flow [2024-06-27 18:13:37,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 415 transitions, 4097 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:13:37,259 INFO L231 Difference]: Finished difference. Result has 267 places, 333 transitions, 3237 flow [2024-06-27 18:13:37,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3237, PETRI_PLACES=267, PETRI_TRANSITIONS=333} [2024-06-27 18:13:37,260 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 212 predicate places. [2024-06-27 18:13:37,260 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 333 transitions, 3237 flow [2024-06-27 18:13:37,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:37,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:37,260 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 18:13:37,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:13:37,260 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:37,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash -25288734, now seen corresponding path program 5 times [2024-06-27 18:13:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386315655] [2024-06-27 18:13:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:37,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:39,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:39,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386315655] [2024-06-27 18:13:39,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386315655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:39,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:39,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:39,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023021684] [2024-06-27 18:13:39,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:39,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:39,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:39,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:39,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:13:39,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 333 transitions, 3237 flow. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:39,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:39,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:13:39,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:42,450 INFO L124 PetriNetUnfolderBase]: 8928/14023 cut-off events. [2024-06-27 18:13:42,451 INFO L125 PetriNetUnfolderBase]: For 1116567/1116617 co-relation queries the response was YES. [2024-06-27 18:13:42,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101172 conditions, 14023 events. 8928/14023 cut-off events. For 1116567/1116617 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 94517 event pairs, 1775 based on Foata normal form. 25/13708 useless extension candidates. Maximal degree in co-relation 101047. Up to 11049 conditions per place. [2024-06-27 18:13:42,664 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 285 selfloop transitions, 105 changer transitions 0/420 dead transitions. [2024-06-27 18:13:42,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 420 transitions, 4442 flow [2024-06-27 18:13:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 293 transitions. [2024-06-27 18:13:42,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435992578849722 [2024-06-27 18:13:42,665 INFO L175 Difference]: Start difference. First operand has 267 places, 333 transitions, 3237 flow. Second operand 11 states and 293 transitions. [2024-06-27 18:13:42,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 420 transitions, 4442 flow [2024-06-27 18:13:44,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 420 transitions, 4178 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 18:13:44,286 INFO L231 Difference]: Finished difference. Result has 272 places, 337 transitions, 3284 flow [2024-06-27 18:13:44,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3284, PETRI_PLACES=272, PETRI_TRANSITIONS=337} [2024-06-27 18:13:44,287 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 217 predicate places. [2024-06-27 18:13:44,287 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 337 transitions, 3284 flow [2024-06-27 18:13:44,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:44,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:44,287 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 18:13:44,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:13:44,287 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:44,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:44,287 INFO L85 PathProgramCache]: Analyzing trace with hash -25432884, now seen corresponding path program 6 times [2024-06-27 18:13:44,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393912630] [2024-06-27 18:13:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:44,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:45,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:45,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393912630] [2024-06-27 18:13:45,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393912630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:45,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:45,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:45,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409801649] [2024-06-27 18:13:45,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:45,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:45,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:45,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:45,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:45,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:13:45,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 337 transitions, 3284 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:45,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:45,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:13:45,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:49,013 INFO L124 PetriNetUnfolderBase]: 9091/14335 cut-off events. [2024-06-27 18:13:49,013 INFO L125 PetriNetUnfolderBase]: For 1127652/1127702 co-relation queries the response was YES. [2024-06-27 18:13:49,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102608 conditions, 14335 events. 9091/14335 cut-off events. For 1127652/1127702 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 97181 event pairs, 1761 based on Foata normal form. 21/14000 useless extension candidates. Maximal degree in co-relation 102481. Up to 10418 conditions per place. [2024-06-27 18:13:49,214 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 242 selfloop transitions, 140 changer transitions 0/412 dead transitions. [2024-06-27 18:13:49,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 412 transitions, 4418 flow [2024-06-27 18:13:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2024-06-27 18:13:49,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551020408163265 [2024-06-27 18:13:49,215 INFO L175 Difference]: Start difference. First operand has 272 places, 337 transitions, 3284 flow. Second operand 10 states and 272 transitions. [2024-06-27 18:13:49,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 412 transitions, 4418 flow [2024-06-27 18:13:51,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 412 transitions, 4162 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:51,349 INFO L231 Difference]: Finished difference. Result has 274 places, 338 transitions, 3383 flow [2024-06-27 18:13:51,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3383, PETRI_PLACES=274, PETRI_TRANSITIONS=338} [2024-06-27 18:13:51,349 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 219 predicate places. [2024-06-27 18:13:51,349 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 338 transitions, 3383 flow [2024-06-27 18:13:51,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:51,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:51,349 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 18:13:51,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:13:51,350 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:51,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:51,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1216843430, now seen corresponding path program 7 times [2024-06-27 18:13:51,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:51,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43173183] [2024-06-27 18:13:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:51,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:52,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:52,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43173183] [2024-06-27 18:13:52,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43173183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:52,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:52,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292732366] [2024-06-27 18:13:52,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:52,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:53,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:13:53,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 338 transitions, 3383 flow. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:53,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:53,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:13:53,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:56,597 INFO L124 PetriNetUnfolderBase]: 9269/14513 cut-off events. [2024-06-27 18:13:56,597 INFO L125 PetriNetUnfolderBase]: For 1157219/1157269 co-relation queries the response was YES. [2024-06-27 18:13:56,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105161 conditions, 14513 events. 9269/14513 cut-off events. For 1157219/1157269 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 98013 event pairs, 1760 based on Foata normal form. 17/14206 useless extension candidates. Maximal degree in co-relation 105033. Up to 10746 conditions per place. [2024-06-27 18:13:56,872 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 278 selfloop transitions, 117 changer transitions 0/425 dead transitions. [2024-06-27 18:13:56,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 425 transitions, 4601 flow [2024-06-27 18:13:56,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-06-27 18:13:56,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549165120593692 [2024-06-27 18:13:56,874 INFO L175 Difference]: Start difference. First operand has 274 places, 338 transitions, 3383 flow. Second operand 11 states and 296 transitions. [2024-06-27 18:13:56,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 425 transitions, 4601 flow [2024-06-27 18:13:58,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 425 transitions, 4284 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:58,463 INFO L231 Difference]: Finished difference. Result has 277 places, 339 transitions, 3372 flow [2024-06-27 18:13:58,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3068, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3372, PETRI_PLACES=277, PETRI_TRANSITIONS=339} [2024-06-27 18:13:58,464 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 222 predicate places. [2024-06-27 18:13:58,464 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 339 transitions, 3372 flow [2024-06-27 18:13:58,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:58,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:58,464 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 18:13:58,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:13:58,464 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:58,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1211117699, now seen corresponding path program 1 times [2024-06-27 18:13:58,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:58,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633497093] [2024-06-27 18:13:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:58,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:00,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:00,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633497093] [2024-06-27 18:14:00,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633497093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:00,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:00,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522900959] [2024-06-27 18:14:00,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:00,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:00,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:00,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:14:00,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 339 transitions, 3372 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:00,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:00,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:14:00,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:04,069 INFO L124 PetriNetUnfolderBase]: 10195/15826 cut-off events. [2024-06-27 18:14:04,069 INFO L125 PetriNetUnfolderBase]: For 1157369/1157419 co-relation queries the response was YES. [2024-06-27 18:14:04,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112100 conditions, 15826 events. 10195/15826 cut-off events. For 1157369/1157419 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 105257 event pairs, 2190 based on Foata normal form. 5/15475 useless extension candidates. Maximal degree in co-relation 111971. Up to 13650 conditions per place. [2024-06-27 18:14:04,439 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 316 selfloop transitions, 75 changer transitions 0/412 dead transitions. [2024-06-27 18:14:04,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 412 transitions, 4510 flow [2024-06-27 18:14:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:14:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:14:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 18:14:04,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-27 18:14:04,440 INFO L175 Difference]: Start difference. First operand has 277 places, 339 transitions, 3372 flow. Second operand 10 states and 252 transitions. [2024-06-27 18:14:04,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 412 transitions, 4510 flow [2024-06-27 18:14:05,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 412 transitions, 4238 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:05,633 INFO L231 Difference]: Finished difference. Result has 280 places, 344 transitions, 3369 flow [2024-06-27 18:14:05,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3369, PETRI_PLACES=280, PETRI_TRANSITIONS=344} [2024-06-27 18:14:05,634 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 225 predicate places. [2024-06-27 18:14:05,634 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 344 transitions, 3369 flow [2024-06-27 18:14:05,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:05,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:05,635 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 18:14:05,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:14:05,635 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:14:05,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash 264666849, now seen corresponding path program 1 times [2024-06-27 18:14:05,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:05,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215759056] [2024-06-27 18:14:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:05,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:06,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:06,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215759056] [2024-06-27 18:14:06,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215759056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:06,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:06,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:14:06,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949871659] [2024-06-27 18:14:06,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:06,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:14:06,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:14:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:14:06,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:14:06,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 344 transitions, 3369 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 18:14:06,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:06,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:14:06,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:10,257 INFO L124 PetriNetUnfolderBase]: 9844/15487 cut-off events. [2024-06-27 18:14:10,257 INFO L125 PetriNetUnfolderBase]: For 1180866/1181039 co-relation queries the response was YES. [2024-06-27 18:14:10,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109131 conditions, 15487 events. 9844/15487 cut-off events. For 1180866/1181039 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 105383 event pairs, 2579 based on Foata normal form. 99/15185 useless extension candidates. Maximal degree in co-relation 109000. Up to 13319 conditions per place. [2024-06-27 18:14:10,424 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 306 selfloop transitions, 48 changer transitions 0/403 dead transitions. [2024-06-27 18:14:10,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 403 transitions, 4733 flow [2024-06-27 18:14:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:14:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:14:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 18:14:10,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-27 18:14:10,425 INFO L175 Difference]: Start difference. First operand has 280 places, 344 transitions, 3369 flow. Second operand 8 states and 209 transitions. [2024-06-27 18:14:10,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 403 transitions, 4733 flow [2024-06-27 18:14:11,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 403 transitions, 4512 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 18:14:11,833 INFO L231 Difference]: Finished difference. Result has 283 places, 354 transitions, 3420 flow [2024-06-27 18:14:11,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3420, PETRI_PLACES=283, PETRI_TRANSITIONS=354} [2024-06-27 18:14:11,833 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 228 predicate places. [2024-06-27 18:14:11,834 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 354 transitions, 3420 flow [2024-06-27 18:14:11,834 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 18:14:11,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:11,834 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 18:14:11,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:14:11,834 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:14:11,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:11,834 INFO L85 PathProgramCache]: Analyzing trace with hash -974929618, now seen corresponding path program 1 times [2024-06-27 18:14:11,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:11,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652225287] [2024-06-27 18:14:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:11,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:12,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:12,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652225287] [2024-06-27 18:14:12,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652225287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:12,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:12,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:14:12,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391055554] [2024-06-27 18:14:12,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:12,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:14:12,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:12,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:14:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:14:12,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:14:12,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 354 transitions, 3420 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:12,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:12,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:14:12,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:16,292 INFO L124 PetriNetUnfolderBase]: 10884/16701 cut-off events. [2024-06-27 18:14:16,293 INFO L125 PetriNetUnfolderBase]: For 1200740/1200746 co-relation queries the response was YES. [2024-06-27 18:14:16,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118421 conditions, 16701 events. 10884/16701 cut-off events. For 1200740/1200746 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 109936 event pairs, 2723 based on Foata normal form. 5/16347 useless extension candidates. Maximal degree in co-relation 118287. Up to 15386 conditions per place. [2024-06-27 18:14:16,517 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 358 selfloop transitions, 39 changer transitions 0/405 dead transitions. [2024-06-27 18:14:16,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 405 transitions, 4896 flow [2024-06-27 18:14:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:14:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:14:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:14:16,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48104956268221577 [2024-06-27 18:14:16,518 INFO L175 Difference]: Start difference. First operand has 283 places, 354 transitions, 3420 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:14:16,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 405 transitions, 4896 flow [2024-06-27 18:14:18,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 405 transitions, 4819 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 18:14:18,768 INFO L231 Difference]: Finished difference. Result has 288 places, 370 transitions, 3711 flow [2024-06-27 18:14:18,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3711, PETRI_PLACES=288, PETRI_TRANSITIONS=370} [2024-06-27 18:14:18,768 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 233 predicate places. [2024-06-27 18:14:18,769 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 370 transitions, 3711 flow [2024-06-27 18:14:18,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:18,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:18,769 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 18:14:18,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:14:18,769 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:14:18,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash -968263378, now seen corresponding path program 2 times [2024-06-27 18:14:18,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:18,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622750721] [2024-06-27 18:14:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:18,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:19,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:19,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622750721] [2024-06-27 18:14:19,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622750721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:19,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:19,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:14:19,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471499985] [2024-06-27 18:14:19,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:19,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:14:19,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:14:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:14:19,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-27 18:14:19,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 370 transitions, 3711 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:19,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:19,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-27 18:14:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand