./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix002.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix002.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/mix002.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix002.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 18:09:27,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:09:27,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:09:27,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:09:27,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:09:27,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:09:27,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:09:27,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:09:27,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:09:27,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:09:27,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:09:27,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:09:27,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:09:27,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:09:27,509 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:09:27,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:09:27,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:09:27,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:09:27,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:09:27,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:09:27,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:09:27,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:09:27,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:09:27,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:09:27,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:09:27,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:09:27,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:09:27,513 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:09:27,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:09:27,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:09:27,514 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:09:27,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:09:27,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:09:27,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:09:27,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:09:27,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:09:27,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:09:27,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:09:27,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:09:27,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:09:27,520 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:09:27,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:09:27,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:09:27,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:09:27,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:09:27,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:09:27,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:09:27,694 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:09:27,694 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:09:27,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix002.oepc.yml/witness.yml [2024-06-27 18:09:27,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:09:27,843 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:09:27,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix002.oepc.i [2024-06-27 18:09:28,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:09:29,152 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:09:29,153 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.oepc.i [2024-06-27 18:09:29,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7d36ffe/63ace782879e46d88b410e6b1273b3e4/FLAGc25fa0d26 [2024-06-27 18:09:29,177 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7d36ffe/63ace782879e46d88b410e6b1273b3e4 [2024-06-27 18:09:29,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:09:29,179 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:09:29,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:09:29,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:09:29,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:09:29,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:27" (1/2) ... [2024-06-27 18:09:29,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30735786 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:29, skipping insertion in model container [2024-06-27 18:09:29,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:27" (1/2) ... [2024-06-27 18:09:29,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@59c586ce and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:29, skipping insertion in model container [2024-06-27 18:09:29,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:09:29" (2/2) ... [2024-06-27 18:09:29,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30735786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29, skipping insertion in model container [2024-06-27 18:09:29,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:09:29" (2/2) ... [2024-06-27 18:09:29,190 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:09:29,328 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:09:29,329 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:09:29,329 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:09:29,329 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:09:29,329 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:09:29,329 INFO L106 edCorrectnessWitness]: ghost_update [L856-L856] multithreaded = 1; [2024-06-27 18:09:29,365 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:09:29,534 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/mix002.oepc.i[945,958] [2024-06-27 18:09:29,727 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:09:29,739 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:09:29,771 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/mix002.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:09:29,864 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:09:29,904 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:09:29,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29 WrapperNode [2024-06-27 18:09:29,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:09:29,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:09:29,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:09:29,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:09:29,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:29,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:29,973 INFO L138 Inliner]: procedures = 175, calls = 50, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-06-27 18:09:29,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:09:29,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:09:29,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:09:29,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:09:29,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:29,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:29,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:30,022 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 18:09:30,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:30,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:30,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:30,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:30,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:30,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:30,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:09:30,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:09:30,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:09:30,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:09:30,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (1/1) ... [2024-06-27 18:09:30,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:09:30,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:09:30,082 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 18:09:30,122 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 18:09:30,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:09:30,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:09:30,150 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:09:30,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:09:30,151 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:09:30,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:09:30,151 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:09:30,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:09:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:09:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:09:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:09:30,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:09:30,154 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 18:09:30,280 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:09:30,282 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:09:30,590 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:09:30,591 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:09:30,797 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:09:30,797 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:09:30,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:09:30 BoogieIcfgContainer [2024-06-27 18:09:30,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:09:30,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:09:30,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:09:30,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:09:30,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:27" (1/4) ... [2024-06-27 18:09:30,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d04b58 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:09:30, skipping insertion in model container [2024-06-27 18:09:30,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:09:29" (2/4) ... [2024-06-27 18:09:30,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d04b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:09:30, skipping insertion in model container [2024-06-27 18:09:30,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:29" (3/4) ... [2024-06-27 18:09:30,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d04b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:09:30, skipping insertion in model container [2024-06-27 18:09:30,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:09:30" (4/4) ... [2024-06-27 18:09:30,808 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.oepc.i [2024-06-27 18:09:30,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:09:30,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:09:30,828 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:09:30,858 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:09:30,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-06-27 18:09:30,912 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-27 18:09:30,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:09:30,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-06-27 18:09:30,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-06-27 18:09:30,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-06-27 18:09:30,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:09:30,938 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;@706fcf23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:09:30,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:09:30,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:09:30,941 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:09:30,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:09:30,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:30,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:09:30,942 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 18:09:30,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:30,948 INFO L85 PathProgramCache]: Analyzing trace with hash 349864306, now seen corresponding path program 1 times [2024-06-27 18:09:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:30,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970238278] [2024-06-27 18:09:30,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:30,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:31,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:31,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970238278] [2024-06-27 18:09:31,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970238278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:31,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:09:31,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389764627] [2024-06-27 18:09:31,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:31,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:09:31,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:09:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:09:31,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-06-27 18:09:31,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:31,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:31,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-06-27 18:09:31,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:32,545 INFO L124 PetriNetUnfolderBase]: 3699/6178 cut-off events. [2024-06-27 18:09:32,545 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-27 18:09:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11604 conditions, 6178 events. 3699/6178 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 41670 event pairs, 2881 based on Foata normal form. 176/5845 useless extension candidates. Maximal degree in co-relation 11592. Up to 5323 conditions per place. [2024-06-27 18:09:32,590 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 41 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-27 18:09:32,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 229 flow [2024-06-27 18:09:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:09:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:09:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-27 18:09:32,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-06-27 18:09:32,601 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 105 transitions. [2024-06-27 18:09:32,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 229 flow [2024-06-27 18:09:32,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:32,605 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 135 flow [2024-06-27 18:09:32,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-27 18:09:32,609 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-27 18:09:32,609 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 135 flow [2024-06-27 18:09:32,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:32,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:32,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:09:32,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:09:32,610 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 18:09:32,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:32,611 INFO L85 PathProgramCache]: Analyzing trace with hash 349864596, now seen corresponding path program 1 times [2024-06-27 18:09:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:32,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581874279] [2024-06-27 18:09:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:32,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:32,721 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 18:09:32,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:32,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581874279] [2024-06-27 18:09:32,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581874279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:32,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:32,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:09:32,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323567306] [2024-06-27 18:09:32,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:32,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:09:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:32,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:09:32,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:09:32,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-06-27 18:09:32,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:32,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:32,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-06-27 18:09:32,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:32,964 INFO L124 PetriNetUnfolderBase]: 978/2052 cut-off events. [2024-06-27 18:09:32,965 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:09:32,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3798 conditions, 2052 events. 978/2052 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14599 event pairs, 610 based on Foata normal form. 0/1911 useless extension candidates. Maximal degree in co-relation 3786. Up to 1259 conditions per place. [2024-06-27 18:09:32,976 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 35 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-06-27 18:09:32,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 238 flow [2024-06-27 18:09:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:09:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:09:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 18:09:32,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-06-27 18:09:32,978 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 135 flow. Second operand 3 states and 119 transitions. [2024-06-27 18:09:32,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 238 flow [2024-06-27 18:09:32,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:32,980 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 128 flow [2024-06-27 18:09:32,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-27 18:09:32,981 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-27 18:09:32,981 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 128 flow [2024-06-27 18:09:32,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:32,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:32,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:32,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:09:32,982 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 18:09:32,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1212430624, now seen corresponding path program 1 times [2024-06-27 18:09:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933331766] [2024-06-27 18:09:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:33,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933331766] [2024-06-27 18:09:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933331766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:33,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:33,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:09:33,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482021843] [2024-06-27 18:09:33,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:33,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:09:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:09:33,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:09:33,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-06-27 18:09:33,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:33,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:33,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-06-27 18:09:33,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:34,293 INFO L124 PetriNetUnfolderBase]: 3141/5242 cut-off events. [2024-06-27 18:09:34,294 INFO L125 PetriNetUnfolderBase]: For 1239/1239 co-relation queries the response was YES. [2024-06-27 18:09:34,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11023 conditions, 5242 events. 3141/5242 cut-off events. For 1239/1239 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 34087 event pairs, 2322 based on Foata normal form. 3/5047 useless extension candidates. Maximal degree in co-relation 11010. Up to 4514 conditions per place. [2024-06-27 18:09:34,317 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 49 selfloop transitions, 8 changer transitions 2/74 dead transitions. [2024-06-27 18:09:34,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 318 flow [2024-06-27 18:09:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:09:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:09:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-06-27 18:09:34,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.655 [2024-06-27 18:09:34,321 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 128 flow. Second operand 4 states and 131 transitions. [2024-06-27 18:09:34,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 318 flow [2024-06-27 18:09:34,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:34,324 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 189 flow [2024-06-27 18:09:34,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-27 18:09:34,326 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-06-27 18:09:34,326 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 189 flow [2024-06-27 18:09:34,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:34,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:34,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:09:34,327 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 18:09:34,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1069354635, now seen corresponding path program 1 times [2024-06-27 18:09:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:34,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253940457] [2024-06-27 18:09:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:35,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253940457] [2024-06-27 18:09:35,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253940457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:35,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:35,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:09:35,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927041431] [2024-06-27 18:09:35,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:35,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:09:35,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:35,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:09:35,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:09:35,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-27 18:09:35,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 189 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 18:09:35,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:35,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-27 18:09:35,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:35,700 INFO L124 PetriNetUnfolderBase]: 3177/5420 cut-off events. [2024-06-27 18:09:35,700 INFO L125 PetriNetUnfolderBase]: For 2338/2338 co-relation queries the response was YES. [2024-06-27 18:09:35,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12247 conditions, 5420 events. 3177/5420 cut-off events. For 2338/2338 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35748 event pairs, 2153 based on Foata normal form. 3/5232 useless extension candidates. Maximal degree in co-relation 12232. Up to 4552 conditions per place. [2024-06-27 18:09:35,731 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 60 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-06-27 18:09:35,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 417 flow [2024-06-27 18:09:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-27 18:09:35,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-06-27 18:09:35,733 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 189 flow. Second operand 5 states and 156 transitions. [2024-06-27 18:09:35,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 417 flow [2024-06-27 18:09:35,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 406 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:35,737 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 230 flow [2024-06-27 18:09:35,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-27 18:09:35,738 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-27 18:09:35,738 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 230 flow [2024-06-27 18:09:35,738 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 18:09:35,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:35,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:09:35,739 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 18:09:35,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash 988101359, now seen corresponding path program 1 times [2024-06-27 18:09:35,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:35,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67156225] [2024-06-27 18:09:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:35,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:36,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67156225] [2024-06-27 18:09:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67156225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:36,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:36,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:09:36,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819912497] [2024-06-27 18:09:36,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:36,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:09:36,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:09:36,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:09:36,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-27 18:09:36,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:36,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:36,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-27 18:09:36,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:37,542 INFO L124 PetriNetUnfolderBase]: 3176/5463 cut-off events. [2024-06-27 18:09:37,542 INFO L125 PetriNetUnfolderBase]: For 4237/4237 co-relation queries the response was YES. [2024-06-27 18:09:37,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13213 conditions, 5463 events. 3176/5463 cut-off events. For 4237/4237 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 36368 event pairs, 1552 based on Foata normal form. 3/5230 useless extension candidates. Maximal degree in co-relation 13196. Up to 4529 conditions per place. [2024-06-27 18:09:37,576 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 70 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-27 18:09:37,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 98 transitions, 514 flow [2024-06-27 18:09:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-27 18:09:37,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-27 18:09:37,578 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 230 flow. Second operand 6 states and 186 transitions. [2024-06-27 18:09:37,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 98 transitions, 514 flow [2024-06-27 18:09:37,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 98 transitions, 488 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:37,582 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 266 flow [2024-06-27 18:09:37,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-27 18:09:37,583 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-27 18:09:37,583 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 266 flow [2024-06-27 18:09:37,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:37,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:37,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:09:37,584 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 18:09:37,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash -556469986, now seen corresponding path program 1 times [2024-06-27 18:09:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884410347] [2024-06-27 18:09:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:38,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:38,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884410347] [2024-06-27 18:09:38,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884410347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:38,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:38,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:09:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907342276] [2024-06-27 18:09:38,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:38,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:09:38,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:09:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:09:38,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:09:38,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:38,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:38,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:09:38,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:39,334 INFO L124 PetriNetUnfolderBase]: 4945/8355 cut-off events. [2024-06-27 18:09:39,334 INFO L125 PetriNetUnfolderBase]: For 9379/9383 co-relation queries the response was YES. [2024-06-27 18:09:39,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20926 conditions, 8355 events. 4945/8355 cut-off events. For 9379/9383 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 57230 event pairs, 2855 based on Foata normal form. 6/8121 useless extension candidates. Maximal degree in co-relation 20907. Up to 7090 conditions per place. [2024-06-27 18:09:39,384 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 58 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-06-27 18:09:39,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 464 flow [2024-06-27 18:09:39,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 18:09:39,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-27 18:09:39,386 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 266 flow. Second operand 5 states and 130 transitions. [2024-06-27 18:09:39,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 464 flow [2024-06-27 18:09:39,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 428 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:39,396 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 283 flow [2024-06-27 18:09:39,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-27 18:09:39,399 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-06-27 18:09:39,399 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 283 flow [2024-06-27 18:09:39,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:39,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:39,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:39,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:09:39,400 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 18:09:39,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1369791842, now seen corresponding path program 1 times [2024-06-27 18:09:39,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:39,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788689824] [2024-06-27 18:09:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:39,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:40,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788689824] [2024-06-27 18:09:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788689824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:40,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:40,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696992467] [2024-06-27 18:09:40,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:40,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:41,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 18:09:41,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:41,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:41,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 18:09:41,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:41,933 INFO L124 PetriNetUnfolderBase]: 4160/7137 cut-off events. [2024-06-27 18:09:41,934 INFO L125 PetriNetUnfolderBase]: For 11412/11412 co-relation queries the response was YES. [2024-06-27 18:09:41,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19075 conditions, 7137 events. 4160/7137 cut-off events. For 11412/11412 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48941 event pairs, 1647 based on Foata normal form. 3/6858 useless extension candidates. Maximal degree in co-relation 19055. Up to 5869 conditions per place. [2024-06-27 18:09:41,983 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 93 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-27 18:09:41,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 127 transitions, 693 flow [2024-06-27 18:09:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 239 transitions. [2024-06-27 18:09:41,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975 [2024-06-27 18:09:41,985 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 283 flow. Second operand 8 states and 239 transitions. [2024-06-27 18:09:41,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 127 transitions, 693 flow [2024-06-27 18:09:41,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 127 transitions, 666 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:41,991 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 352 flow [2024-06-27 18:09:41,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=352, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-06-27 18:09:41,992 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2024-06-27 18:09:41,992 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 352 flow [2024-06-27 18:09:41,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:41,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:41,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:41,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:09:41,993 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 18:09:41,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash -93936209, now seen corresponding path program 1 times [2024-06-27 18:09:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:41,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623331310] [2024-06-27 18:09:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:42,788 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 18:09:42,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623331310] [2024-06-27 18:09:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623331310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:42,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:42,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445525091] [2024-06-27 18:09:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:42,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:09:42,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:42,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:42,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:09:42,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:44,042 INFO L124 PetriNetUnfolderBase]: 4924/8321 cut-off events. [2024-06-27 18:09:44,043 INFO L125 PetriNetUnfolderBase]: For 17725/17731 co-relation queries the response was YES. [2024-06-27 18:09:44,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23533 conditions, 8321 events. 4924/8321 cut-off events. For 17725/17731 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 57132 event pairs, 2201 based on Foata normal form. 10/8091 useless extension candidates. Maximal degree in co-relation 23511. Up to 7040 conditions per place. [2024-06-27 18:09:44,091 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 73 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2024-06-27 18:09:44,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 614 flow [2024-06-27 18:09:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:44,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-27 18:09:44,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-27 18:09:44,093 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 352 flow. Second operand 6 states and 156 transitions. [2024-06-27 18:09:44,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 614 flow [2024-06-27 18:09:44,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 99 transitions, 562 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:44,099 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 364 flow [2024-06-27 18:09:44,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=300, 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=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-27 18:09:44,100 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-27 18:09:44,100 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 364 flow [2024-06-27 18:09:44,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:44,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:44,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:44,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:09:44,101 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 18:09:44,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1790298406, now seen corresponding path program 1 times [2024-06-27 18:09:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:44,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30605711] [2024-06-27 18:09:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:44,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:44,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30605711] [2024-06-27 18:09:44,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30605711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:44,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:44,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823188498] [2024-06-27 18:09:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:44,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:44,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:45,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:09:45,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:45,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:45,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:09:45,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:46,103 INFO L124 PetriNetUnfolderBase]: 4969/8403 cut-off events. [2024-06-27 18:09:46,104 INFO L125 PetriNetUnfolderBase]: For 21469/21476 co-relation queries the response was YES. [2024-06-27 18:09:46,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24878 conditions, 8403 events. 4969/8403 cut-off events. For 21469/21476 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 57080 event pairs, 1961 based on Foata normal form. 9/8130 useless extension candidates. Maximal degree in co-relation 24854. Up to 7064 conditions per place. [2024-06-27 18:09:46,150 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 82 selfloop transitions, 18 changer transitions 0/112 dead transitions. [2024-06-27 18:09:46,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 737 flow [2024-06-27 18:09:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 18:09:46,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366666666666666 [2024-06-27 18:09:46,152 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 364 flow. Second operand 6 states and 161 transitions. [2024-06-27 18:09:46,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 737 flow [2024-06-27 18:09:46,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 692 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:46,162 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 456 flow [2024-06-27 18:09:46,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=456, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-27 18:09:46,162 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2024-06-27 18:09:46,163 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 456 flow [2024-06-27 18:09:46,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:46,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:46,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:46,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:09:46,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:46,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:46,164 INFO L85 PathProgramCache]: Analyzing trace with hash 486127667, now seen corresponding path program 1 times [2024-06-27 18:09:46,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:46,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862494527] [2024-06-27 18:09:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:46,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862494527] [2024-06-27 18:09:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862494527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:47,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:47,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394790871] [2024-06-27 18:09:47,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:47,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:48,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 18:09:48,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 456 flow. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:48,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:48,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 18:09:48,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:49,092 INFO L124 PetriNetUnfolderBase]: 4187/7166 cut-off events. [2024-06-27 18:09:49,093 INFO L125 PetriNetUnfolderBase]: For 24757/24771 co-relation queries the response was YES. [2024-06-27 18:09:49,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22800 conditions, 7166 events. 4187/7166 cut-off events. For 24757/24771 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 49070 event pairs, 1313 based on Foata normal form. 6/6888 useless extension candidates. Maximal degree in co-relation 22775. Up to 5846 conditions per place. [2024-06-27 18:09:49,140 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 110 selfloop transitions, 22 changer transitions 0/149 dead transitions. [2024-06-27 18:09:49,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 149 transitions, 920 flow [2024-06-27 18:09:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 264 transitions. [2024-06-27 18:09:49,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-06-27 18:09:49,143 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 456 flow. Second operand 9 states and 264 transitions. [2024-06-27 18:09:49,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 149 transitions, 920 flow [2024-06-27 18:09:49,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 149 transitions, 900 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:49,155 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 509 flow [2024-06-27 18:09:49,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=509, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2024-06-27 18:09:49,156 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-27 18:09:49,156 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 509 flow [2024-06-27 18:09:49,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:49,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:49,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:49,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:09:49,157 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 18:09:49,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1790089156, now seen corresponding path program 2 times [2024-06-27 18:09:49,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:49,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977360282] [2024-06-27 18:09:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:49,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:49,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:49,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977360282] [2024-06-27 18:09:49,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977360282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:49,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:49,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:49,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563268843] [2024-06-27 18:09:49,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:49,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:50,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:09:50,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:50,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:50,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:09:50,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:51,120 INFO L124 PetriNetUnfolderBase]: 4956/8206 cut-off events. [2024-06-27 18:09:51,121 INFO L125 PetriNetUnfolderBase]: For 33332/33338 co-relation queries the response was YES. [2024-06-27 18:09:51,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27114 conditions, 8206 events. 4956/8206 cut-off events. For 33332/33338 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 55269 event pairs, 2133 based on Foata normal form. 8/8021 useless extension candidates. Maximal degree in co-relation 27086. Up to 7094 conditions per place. [2024-06-27 18:09:51,184 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 81 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2024-06-27 18:09:51,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 755 flow [2024-06-27 18:09:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 18:09:51,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-27 18:09:51,186 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 509 flow. Second operand 6 states and 152 transitions. [2024-06-27 18:09:51,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 755 flow [2024-06-27 18:09:51,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 674 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:51,208 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 462 flow [2024-06-27 18:09:51,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-06-27 18:09:51,209 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-27 18:09:51,209 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 462 flow [2024-06-27 18:09:51,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:51,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:51,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:51,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:09:51,210 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 18:09:51,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash -343637545, now seen corresponding path program 1 times [2024-06-27 18:09:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:51,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091576922] [2024-06-27 18:09:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:51,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:52,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:52,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091576922] [2024-06-27 18:09:52,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091576922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:52,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:52,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674944635] [2024-06-27 18:09:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:52,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:52,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:09:52,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 462 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 18:09:52,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:52,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:09:52,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:53,446 INFO L124 PetriNetUnfolderBase]: 5217/8443 cut-off events. [2024-06-27 18:09:53,446 INFO L125 PetriNetUnfolderBase]: For 35978/35984 co-relation queries the response was YES. [2024-06-27 18:09:53,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28020 conditions, 8443 events. 5217/8443 cut-off events. For 35978/35984 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 54732 event pairs, 1846 based on Foata normal form. 8/8229 useless extension candidates. Maximal degree in co-relation 27990. Up to 7318 conditions per place. [2024-06-27 18:09:53,506 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 94 selfloop transitions, 26 changer transitions 0/130 dead transitions. [2024-06-27 18:09:53,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 130 transitions, 910 flow [2024-06-27 18:09:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:09:53,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-27 18:09:53,508 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 462 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:09:53,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 130 transitions, 910 flow [2024-06-27 18:09:53,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 871 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:53,683 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 549 flow [2024-06-27 18:09:53,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=549, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2024-06-27 18:09:53,684 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2024-06-27 18:09:53,684 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 549 flow [2024-06-27 18:09:53,685 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 18:09:53,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:53,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:53,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:09:53,685 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 18:09:53,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:53,686 INFO L85 PathProgramCache]: Analyzing trace with hash 768050273, now seen corresponding path program 1 times [2024-06-27 18:09:53,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:53,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61982424] [2024-06-27 18:09:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:53,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:54,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:54,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61982424] [2024-06-27 18:09:54,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61982424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:54,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:54,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:54,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141812710] [2024-06-27 18:09:54,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:54,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:54,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:54,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:54,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:09:54,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 549 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:54,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:54,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:09:54,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:55,925 INFO L124 PetriNetUnfolderBase]: 5078/8346 cut-off events. [2024-06-27 18:09:55,926 INFO L125 PetriNetUnfolderBase]: For 43110/43120 co-relation queries the response was YES. [2024-06-27 18:09:55,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28927 conditions, 8346 events. 5078/8346 cut-off events. For 43110/43120 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 55270 event pairs, 1743 based on Foata normal form. 10/8131 useless extension candidates. Maximal degree in co-relation 28897. Up to 7100 conditions per place. [2024-06-27 18:09:55,981 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 99 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-27 18:09:55,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 139 transitions, 1027 flow [2024-06-27 18:09:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-27 18:09:55,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-27 18:09:55,985 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 549 flow. Second operand 7 states and 189 transitions. [2024-06-27 18:09:55,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 139 transitions, 1027 flow [2024-06-27 18:09:56,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 139 transitions, 979 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:56,032 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 666 flow [2024-06-27 18:09:56,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=666, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2024-06-27 18:09:56,034 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-27 18:09:56,034 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 666 flow [2024-06-27 18:09:56,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:56,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:56,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:56,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:09:56,045 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 18:09:56,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash -343458055, now seen corresponding path program 2 times [2024-06-27 18:09:56,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:56,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947554798] [2024-06-27 18:09:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:57,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:57,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947554798] [2024-06-27 18:09:57,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947554798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:57,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:57,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458742536] [2024-06-27 18:09:57,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:57,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:57,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:57,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:57,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:09:57,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 666 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 18:09:57,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:57,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:09:57,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:58,826 INFO L124 PetriNetUnfolderBase]: 5319/8599 cut-off events. [2024-06-27 18:09:58,826 INFO L125 PetriNetUnfolderBase]: For 51788/51792 co-relation queries the response was YES. [2024-06-27 18:09:58,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32058 conditions, 8599 events. 5319/8599 cut-off events. For 51788/51792 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 55655 event pairs, 1775 based on Foata normal form. 6/8379 useless extension candidates. Maximal degree in co-relation 32025. Up to 7452 conditions per place. [2024-06-27 18:09:58,893 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 102 selfloop transitions, 28 changer transitions 0/140 dead transitions. [2024-06-27 18:09:58,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 140 transitions, 1112 flow [2024-06-27 18:09:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 18:09:58,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2024-06-27 18:09:58,895 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 666 flow. Second operand 7 states and 181 transitions. [2024-06-27 18:09:58,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 140 transitions, 1112 flow [2024-06-27 18:09:58,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 140 transitions, 1080 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:58,938 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 730 flow [2024-06-27 18:09:58,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=730, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2024-06-27 18:09:58,939 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2024-06-27 18:09:58,939 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 730 flow [2024-06-27 18:09:58,939 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 18:09:58,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:58,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:58,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:09:58,940 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 18:09:58,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1525595723, now seen corresponding path program 2 times [2024-06-27 18:09:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:58,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365005574] [2024-06-27 18:09:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:58,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:59,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:59,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365005574] [2024-06-27 18:09:59,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365005574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:59,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:59,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837218988] [2024-06-27 18:09:59,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:59,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:59,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:10:00,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:10:00,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 730 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:00,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:00,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:10:00,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:01,141 INFO L124 PetriNetUnfolderBase]: 5136/8487 cut-off events. [2024-06-27 18:10:01,142 INFO L125 PetriNetUnfolderBase]: For 56477/56485 co-relation queries the response was YES. [2024-06-27 18:10:01,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31824 conditions, 8487 events. 5136/8487 cut-off events. For 56477/56485 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 57011 event pairs, 2031 based on Foata normal form. 12/8299 useless extension candidates. Maximal degree in co-relation 31788. Up to 7289 conditions per place. [2024-06-27 18:10:01,200 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 103 selfloop transitions, 17 changer transitions 0/135 dead transitions. [2024-06-27 18:10:01,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 1086 flow [2024-06-27 18:10:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:10:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:10:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:10:01,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-27 18:10:01,202 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 730 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:10:01,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 1086 flow [2024-06-27 18:10:01,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 135 transitions, 1026 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:01,244 INFO L231 Difference]: Finished difference. Result has 97 places, 105 transitions, 756 flow [2024-06-27 18:10:01,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=756, PETRI_PLACES=97, PETRI_TRANSITIONS=105} [2024-06-27 18:10:01,245 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-06-27 18:10:01,245 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 105 transitions, 756 flow [2024-06-27 18:10:01,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:01,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:01,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:10:01,246 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 18:10:01,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash -78683087, now seen corresponding path program 3 times [2024-06-27 18:10:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:01,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531278408] [2024-06-27 18:10:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:02,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:02,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531278408] [2024-06-27 18:10:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531278408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:02,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:02,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:10:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776873852] [2024-06-27 18:10:02,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:02,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:10:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:10:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:10:02,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:10:02,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 105 transitions, 756 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:02,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:02,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:10:02,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:03,640 INFO L124 PetriNetUnfolderBase]: 5126/8467 cut-off events. [2024-06-27 18:10:03,641 INFO L125 PetriNetUnfolderBase]: For 60311/60319 co-relation queries the response was YES. [2024-06-27 18:10:03,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31964 conditions, 8467 events. 5126/8467 cut-off events. For 60311/60319 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 56918 event pairs, 2023 based on Foata normal form. 12/8281 useless extension candidates. Maximal degree in co-relation 31927. Up to 7226 conditions per place. [2024-06-27 18:10:03,703 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 101 selfloop transitions, 22 changer transitions 0/138 dead transitions. [2024-06-27 18:10:03,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 1094 flow [2024-06-27 18:10:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:10:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:10:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 18:10:03,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2024-06-27 18:10:03,705 INFO L175 Difference]: Start difference. First operand has 97 places, 105 transitions, 756 flow. Second operand 7 states and 181 transitions. [2024-06-27 18:10:03,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 138 transitions, 1094 flow [2024-06-27 18:10:03,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 1012 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:03,747 INFO L231 Difference]: Finished difference. Result has 99 places, 105 transitions, 726 flow [2024-06-27 18:10:03,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=726, PETRI_PLACES=99, PETRI_TRANSITIONS=105} [2024-06-27 18:10:03,748 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-27 18:10:03,748 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 105 transitions, 726 flow [2024-06-27 18:10:03,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:03,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:03,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:03,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:10:03,749 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:03,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:03,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1062158297, now seen corresponding path program 3 times [2024-06-27 18:10:03,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:03,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587707215] [2024-06-27 18:10:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:03,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:04,714 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 18:10:04,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:04,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587707215] [2024-06-27 18:10:04,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587707215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:04,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:04,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:10:04,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360009240] [2024-06-27 18:10:04,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:04,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:10:04,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:04,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:10:04,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:10:04,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:04,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 105 transitions, 726 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 18:10:04,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:04,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:04,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:06,021 INFO L124 PetriNetUnfolderBase]: 5350/8700 cut-off events. [2024-06-27 18:10:06,022 INFO L125 PetriNetUnfolderBase]: For 63377/63377 co-relation queries the response was YES. [2024-06-27 18:10:06,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33060 conditions, 8700 events. 5350/8700 cut-off events. For 63377/63377 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 57233 event pairs, 2028 based on Foata normal form. 2/8501 useless extension candidates. Maximal degree in co-relation 33023. Up to 7592 conditions per place. [2024-06-27 18:10:06,095 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 110 selfloop transitions, 16 changer transitions 0/136 dead transitions. [2024-06-27 18:10:06,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 1062 flow [2024-06-27 18:10:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:10:06,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:10:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:10:06,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48857142857142855 [2024-06-27 18:10:06,097 INFO L175 Difference]: Start difference. First operand has 99 places, 105 transitions, 726 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:10:06,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 1062 flow [2024-06-27 18:10:06,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 136 transitions, 976 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:06,154 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 680 flow [2024-06-27 18:10:06,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-06-27 18:10:06,155 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2024-06-27 18:10:06,155 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 680 flow [2024-06-27 18:10:06,156 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 18:10:06,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:06,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:10:06,156 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:06,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash -724776664, now seen corresponding path program 1 times [2024-06-27 18:10:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:06,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273446291] [2024-06-27 18:10:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:06,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:06,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273446291] [2024-06-27 18:10:06,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273446291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:06,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:10:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064942071] [2024-06-27 18:10:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:06,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:10:06,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:10:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:10:06,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:10:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:10:06,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:08,371 INFO L124 PetriNetUnfolderBase]: 6325/10490 cut-off events. [2024-06-27 18:10:08,372 INFO L125 PetriNetUnfolderBase]: For 84815/84860 co-relation queries the response was YES. [2024-06-27 18:10:08,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39022 conditions, 10490 events. 6325/10490 cut-off events. For 84815/84860 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 72739 event pairs, 2767 based on Foata normal form. 6/10198 useless extension candidates. Maximal degree in co-relation 38984. Up to 9104 conditions per place. [2024-06-27 18:10:08,458 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 89 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2024-06-27 18:10:08,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 123 transitions, 944 flow [2024-06-27 18:10:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:10:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:10:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 18:10:08,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:10:08,460 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 680 flow. Second operand 5 states and 125 transitions. [2024-06-27 18:10:08,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 123 transitions, 944 flow [2024-06-27 18:10:08,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 123 transitions, 888 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:08,518 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 683 flow [2024-06-27 18:10:08,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=683, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-06-27 18:10:08,518 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-06-27 18:10:08,519 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 683 flow [2024-06-27 18:10:08,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:08,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:08,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:10:08,519 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 18:10:08,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1799432601, now seen corresponding path program 1 times [2024-06-27 18:10:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:08,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710069591] [2024-06-27 18:10:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:08,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:09,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710069591] [2024-06-27 18:10:09,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710069591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:09,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:09,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:09,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340455755] [2024-06-27 18:10:09,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:09,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:09,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:09,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:09,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:09,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 683 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 18:10:09,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:09,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:09,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:10,879 INFO L124 PetriNetUnfolderBase]: 5631/9061 cut-off events. [2024-06-27 18:10:10,879 INFO L125 PetriNetUnfolderBase]: For 82403/82411 co-relation queries the response was YES. [2024-06-27 18:10:10,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36498 conditions, 9061 events. 5631/9061 cut-off events. For 82403/82411 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 58992 event pairs, 1808 based on Foata normal form. 6/8803 useless extension candidates. Maximal degree in co-relation 36459. Up to 7760 conditions per place. [2024-06-27 18:10:10,948 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 118 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2024-06-27 18:10:10,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 166 transitions, 1277 flow [2024-06-27 18:10:10,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:10,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 18:10:10,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5275 [2024-06-27 18:10:10,952 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 683 flow. Second operand 8 states and 211 transitions. [2024-06-27 18:10:10,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 166 transitions, 1277 flow [2024-06-27 18:10:11,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 166 transitions, 1242 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:10:11,011 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 808 flow [2024-06-27 18:10:11,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=808, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2024-06-27 18:10:11,012 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-27 18:10:11,012 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 808 flow [2024-06-27 18:10:11,014 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 18:10:11,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:11,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:11,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:10:11,014 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 18:10:11,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1799582331, now seen corresponding path program 2 times [2024-06-27 18:10:11,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:11,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399869192] [2024-06-27 18:10:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:12,173 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 18:10:12,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:12,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399869192] [2024-06-27 18:10:12,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399869192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:12,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:12,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:12,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226212730] [2024-06-27 18:10:12,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:12,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:12,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:12,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 808 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 18:10:12,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:12,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:12,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:13,631 INFO L124 PetriNetUnfolderBase]: 5654/9096 cut-off events. [2024-06-27 18:10:13,632 INFO L125 PetriNetUnfolderBase]: For 92719/92727 co-relation queries the response was YES. [2024-06-27 18:10:13,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38117 conditions, 9096 events. 5654/9096 cut-off events. For 92719/92727 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 59159 event pairs, 1809 based on Foata normal form. 6/8837 useless extension candidates. Maximal degree in co-relation 38077. Up to 7784 conditions per place. [2024-06-27 18:10:13,715 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 117 selfloop transitions, 38 changer transitions 0/166 dead transitions. [2024-06-27 18:10:13,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 166 transitions, 1368 flow [2024-06-27 18:10:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 18:10:13,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2024-06-27 18:10:13,717 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 808 flow. Second operand 8 states and 209 transitions. [2024-06-27 18:10:13,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 166 transitions, 1368 flow [2024-06-27 18:10:13,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 166 transitions, 1282 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:13,774 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 848 flow [2024-06-27 18:10:13,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2024-06-27 18:10:13,775 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-27 18:10:13,775 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 848 flow [2024-06-27 18:10:13,775 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 18:10:13,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:13,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:13,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:10:13,776 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 18:10:13,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2062828150, now seen corresponding path program 1 times [2024-06-27 18:10:13,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:13,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935787646] [2024-06-27 18:10:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:13,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:14,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935787646] [2024-06-27 18:10:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935787646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:14,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:14,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705811629] [2024-06-27 18:10:14,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:14,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:15,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:15,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 848 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 18:10:15,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:15,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:15,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:16,483 INFO L124 PetriNetUnfolderBase]: 5740/9208 cut-off events. [2024-06-27 18:10:16,484 INFO L125 PetriNetUnfolderBase]: For 100718/100726 co-relation queries the response was YES. [2024-06-27 18:10:16,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38924 conditions, 9208 events. 5740/9208 cut-off events. For 100718/100726 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 59742 event pairs, 1735 based on Foata normal form. 5/8947 useless extension candidates. Maximal degree in co-relation 38882. Up to 7736 conditions per place. [2024-06-27 18:10:16,571 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 121 selfloop transitions, 43 changer transitions 0/175 dead transitions. [2024-06-27 18:10:16,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 175 transitions, 1476 flow [2024-06-27 18:10:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:10:16,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325 [2024-06-27 18:10:16,573 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 848 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:10:16,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 175 transitions, 1476 flow [2024-06-27 18:10:16,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 175 transitions, 1399 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:16,649 INFO L231 Difference]: Finished difference. Result has 110 places, 123 transitions, 947 flow [2024-06-27 18:10:16,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=947, PETRI_PLACES=110, PETRI_TRANSITIONS=123} [2024-06-27 18:10:16,650 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2024-06-27 18:10:16,650 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 123 transitions, 947 flow [2024-06-27 18:10:16,650 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 18:10:16,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:16,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:16,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:10:16,651 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 18:10:16,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:16,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1805146521, now seen corresponding path program 3 times [2024-06-27 18:10:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:16,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340736022] [2024-06-27 18:10:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:16,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:17,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:17,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340736022] [2024-06-27 18:10:17,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340736022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:17,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:17,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637490044] [2024-06-27 18:10:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:17,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:17,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 123 transitions, 947 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 18:10:17,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:17,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:17,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:19,381 INFO L124 PetriNetUnfolderBase]: 5763/9242 cut-off events. [2024-06-27 18:10:19,381 INFO L125 PetriNetUnfolderBase]: For 111433/111441 co-relation queries the response was YES. [2024-06-27 18:10:19,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40438 conditions, 9242 events. 5763/9242 cut-off events. For 111433/111441 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 60018 event pairs, 1814 based on Foata normal form. 6/8980 useless extension candidates. Maximal degree in co-relation 40395. Up to 7925 conditions per place. [2024-06-27 18:10:19,449 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 121 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2024-06-27 18:10:19,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 172 transitions, 1512 flow [2024-06-27 18:10:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 18:10:19,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175 [2024-06-27 18:10:19,451 INFO L175 Difference]: Start difference. First operand has 110 places, 123 transitions, 947 flow. Second operand 8 states and 207 transitions. [2024-06-27 18:10:19,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 172 transitions, 1512 flow [2024-06-27 18:10:19,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 172 transitions, 1439 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:19,535 INFO L231 Difference]: Finished difference. Result has 114 places, 126 transitions, 997 flow [2024-06-27 18:10:19,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=997, PETRI_PLACES=114, PETRI_TRANSITIONS=126} [2024-06-27 18:10:19,536 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-27 18:10:19,536 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 126 transitions, 997 flow [2024-06-27 18:10:19,536 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 18:10:19,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:19,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:19,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:10:19,537 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 18:10:19,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2057256520, now seen corresponding path program 2 times [2024-06-27 18:10:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:19,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220220440] [2024-06-27 18:10:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:20,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:20,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220220440] [2024-06-27 18:10:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220220440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:20,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:20,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:20,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890328946] [2024-06-27 18:10:20,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:20,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:20,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:20,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:20,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:20,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 126 transitions, 997 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 18:10:20,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:20,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:20,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:22,182 INFO L124 PetriNetUnfolderBase]: 5865/9391 cut-off events. [2024-06-27 18:10:22,183 INFO L125 PetriNetUnfolderBase]: For 120863/120871 co-relation queries the response was YES. [2024-06-27 18:10:22,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41695 conditions, 9391 events. 5865/9391 cut-off events. For 120863/120871 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 60964 event pairs, 1748 based on Foata normal form. 5/9128 useless extension candidates. Maximal degree in co-relation 41650. Up to 7854 conditions per place. [2024-06-27 18:10:22,285 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 125 selfloop transitions, 47 changer transitions 0/183 dead transitions. [2024-06-27 18:10:22,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 183 transitions, 1727 flow [2024-06-27 18:10:22,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:10:22,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325 [2024-06-27 18:10:22,287 INFO L175 Difference]: Start difference. First operand has 114 places, 126 transitions, 997 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:10:22,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 183 transitions, 1727 flow [2024-06-27 18:10:22,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 183 transitions, 1647 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:22,415 INFO L231 Difference]: Finished difference. Result has 117 places, 132 transitions, 1095 flow [2024-06-27 18:10:22,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1095, PETRI_PLACES=117, PETRI_TRANSITIONS=132} [2024-06-27 18:10:22,416 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-27 18:10:22,416 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 132 transitions, 1095 flow [2024-06-27 18:10:22,417 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 18:10:22,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:22,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:22,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:10:22,417 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 18:10:22,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2057263960, now seen corresponding path program 3 times [2024-06-27 18:10:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:22,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965786061] [2024-06-27 18:10:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:23,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:23,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965786061] [2024-06-27 18:10:23,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965786061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:23,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:23,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:23,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125477597] [2024-06-27 18:10:23,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:23,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:23,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:23,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 132 transitions, 1095 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 18:10:23,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:23,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:25,034 INFO L124 PetriNetUnfolderBase]: 5855/9377 cut-off events. [2024-06-27 18:10:25,034 INFO L125 PetriNetUnfolderBase]: For 128196/128204 co-relation queries the response was YES. [2024-06-27 18:10:25,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42034 conditions, 9377 events. 5855/9377 cut-off events. For 128196/128204 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 60825 event pairs, 1746 based on Foata normal form. 5/9114 useless extension candidates. Maximal degree in co-relation 41988. Up to 7846 conditions per place. [2024-06-27 18:10:25,128 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 125 selfloop transitions, 46 changer transitions 0/182 dead transitions. [2024-06-27 18:10:25,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 182 transitions, 1669 flow [2024-06-27 18:10:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:10:25,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325 [2024-06-27 18:10:25,130 INFO L175 Difference]: Start difference. First operand has 117 places, 132 transitions, 1095 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:10:25,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 182 transitions, 1669 flow [2024-06-27 18:10:25,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 182 transitions, 1557 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:25,304 INFO L231 Difference]: Finished difference. Result has 121 places, 132 transitions, 1083 flow [2024-06-27 18:10:25,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1083, PETRI_PLACES=121, PETRI_TRANSITIONS=132} [2024-06-27 18:10:25,305 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-27 18:10:25,305 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 132 transitions, 1083 flow [2024-06-27 18:10:25,306 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 18:10:25,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:25,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:25,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:10:25,306 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 18:10:25,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash 48828062, now seen corresponding path program 4 times [2024-06-27 18:10:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:25,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597772949] [2024-06-27 18:10:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:25,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:26,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:26,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597772949] [2024-06-27 18:10:26,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597772949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:26,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:26,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:26,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489992888] [2024-06-27 18:10:26,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:26,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:26,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:26,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 132 transitions, 1083 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 18:10:26,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:26,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:26,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:27,902 INFO L124 PetriNetUnfolderBase]: 5896/9247 cut-off events. [2024-06-27 18:10:27,902 INFO L125 PetriNetUnfolderBase]: For 137158/137162 co-relation queries the response was YES. [2024-06-27 18:10:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42371 conditions, 9247 events. 5896/9247 cut-off events. For 137158/137162 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 59056 event pairs, 2104 based on Foata normal form. 4/9072 useless extension candidates. Maximal degree in co-relation 42324. Up to 8230 conditions per place. [2024-06-27 18:10:27,996 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 143 selfloop transitions, 20 changer transitions 0/174 dead transitions. [2024-06-27 18:10:27,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 174 transitions, 1562 flow [2024-06-27 18:10:27,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:10:27,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-27 18:10:27,998 INFO L175 Difference]: Start difference. First operand has 121 places, 132 transitions, 1083 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:10:27,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 174 transitions, 1562 flow [2024-06-27 18:10:28,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 174 transitions, 1477 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:28,184 INFO L231 Difference]: Finished difference. Result has 123 places, 135 transitions, 1099 flow [2024-06-27 18:10:28,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1099, PETRI_PLACES=123, PETRI_TRANSITIONS=135} [2024-06-27 18:10:28,184 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-06-27 18:10:28,184 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 135 transitions, 1099 flow [2024-06-27 18:10:28,185 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 18:10:28,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:28,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:10:28,185 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 18:10:28,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1676038268, now seen corresponding path program 5 times [2024-06-27 18:10:28,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:28,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86946794] [2024-06-27 18:10:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:28,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:29,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:29,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86946794] [2024-06-27 18:10:29,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86946794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:29,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:29,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:29,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677005635] [2024-06-27 18:10:29,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:29,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:29,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:29,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:29,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:29,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 135 transitions, 1099 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 18:10:29,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:29,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:29,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:30,843 INFO L124 PetriNetUnfolderBase]: 5942/9318 cut-off events. [2024-06-27 18:10:30,843 INFO L125 PetriNetUnfolderBase]: For 147344/147348 co-relation queries the response was YES. [2024-06-27 18:10:30,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42909 conditions, 9318 events. 5942/9318 cut-off events. For 147344/147348 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 59488 event pairs, 2100 based on Foata normal form. 4/9143 useless extension candidates. Maximal degree in co-relation 42861. Up to 8145 conditions per place. [2024-06-27 18:10:30,936 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 139 selfloop transitions, 32 changer transitions 0/182 dead transitions. [2024-06-27 18:10:30,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 1709 flow [2024-06-27 18:10:30,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:10:30,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-27 18:10:30,938 INFO L175 Difference]: Start difference. First operand has 123 places, 135 transitions, 1099 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:10:30,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 1709 flow [2024-06-27 18:10:31,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 182 transitions, 1647 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:31,113 INFO L231 Difference]: Finished difference. Result has 125 places, 138 transitions, 1159 flow [2024-06-27 18:10:31,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1159, PETRI_PLACES=125, PETRI_TRANSITIONS=138} [2024-06-27 18:10:31,113 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-27 18:10:31,113 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 138 transitions, 1159 flow [2024-06-27 18:10:31,114 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 18:10:31,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:31,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:31,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:10:31,114 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 18:10:31,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:31,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1855784847, now seen corresponding path program 4 times [2024-06-27 18:10:31,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:31,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747800964] [2024-06-27 18:10:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:31,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:31,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747800964] [2024-06-27 18:10:31,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747800964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:31,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:31,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702521394] [2024-06-27 18:10:31,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:31,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:31,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:31,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:32,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:32,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 138 transitions, 1159 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 18:10:32,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:32,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:32,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:33,311 INFO L124 PetriNetUnfolderBase]: 5937/9313 cut-off events. [2024-06-27 18:10:33,311 INFO L125 PetriNetUnfolderBase]: For 154672/154676 co-relation queries the response was YES. [2024-06-27 18:10:33,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43220 conditions, 9313 events. 5937/9313 cut-off events. For 154672/154676 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 59551 event pairs, 2113 based on Foata normal form. 2/9136 useless extension candidates. Maximal degree in co-relation 43171. Up to 8326 conditions per place. [2024-06-27 18:10:33,371 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 147 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2024-06-27 18:10:33,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 177 transitions, 1599 flow [2024-06-27 18:10:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:10:33,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 18:10:33,374 INFO L175 Difference]: Start difference. First operand has 125 places, 138 transitions, 1159 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:10:33,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 177 transitions, 1599 flow [2024-06-27 18:10:33,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 177 transitions, 1445 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:33,529 INFO L231 Difference]: Finished difference. Result has 126 places, 138 transitions, 1051 flow [2024-06-27 18:10:33,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1051, PETRI_PLACES=126, PETRI_TRANSITIONS=138} [2024-06-27 18:10:33,530 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-27 18:10:33,530 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 138 transitions, 1051 flow [2024-06-27 18:10:33,530 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 18:10:33,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:33,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:33,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:10:33,530 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 18:10:33,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1432830008, now seen corresponding path program 6 times [2024-06-27 18:10:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672667804] [2024-06-27 18:10:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:34,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:34,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672667804] [2024-06-27 18:10:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672667804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:34,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:34,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:10:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486359260] [2024-06-27 18:10:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:34,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:10:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:34,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:10:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:10:34,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:34,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 138 transitions, 1051 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 18:10:34,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:34,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:34,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:36,200 INFO L124 PetriNetUnfolderBase]: 5927/9296 cut-off events. [2024-06-27 18:10:36,200 INFO L125 PetriNetUnfolderBase]: For 159216/159220 co-relation queries the response was YES. [2024-06-27 18:10:36,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42946 conditions, 9296 events. 5927/9296 cut-off events. For 159216/159220 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 59411 event pairs, 2085 based on Foata normal form. 4/9121 useless extension candidates. Maximal degree in co-relation 42896. Up to 8130 conditions per place. [2024-06-27 18:10:36,297 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 136 selfloop transitions, 33 changer transitions 0/180 dead transitions. [2024-06-27 18:10:36,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 180 transitions, 1509 flow [2024-06-27 18:10:36,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:10:36,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025 [2024-06-27 18:10:36,299 INFO L175 Difference]: Start difference. First operand has 126 places, 138 transitions, 1051 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:10:36,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 180 transitions, 1509 flow [2024-06-27 18:10:36,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 180 transitions, 1391 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 18:10:36,507 INFO L231 Difference]: Finished difference. Result has 124 places, 138 transitions, 1007 flow [2024-06-27 18:10:36,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1007, PETRI_PLACES=124, PETRI_TRANSITIONS=138} [2024-06-27 18:10:36,507 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-06-27 18:10:36,508 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 138 transitions, 1007 flow [2024-06-27 18:10:36,508 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 18:10:36,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:36,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:36,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:10:36,509 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:36,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1866251408, now seen corresponding path program 1 times [2024-06-27 18:10:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:36,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44008127] [2024-06-27 18:10:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:36,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:38,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:38,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44008127] [2024-06-27 18:10:38,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44008127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:38,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:38,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:38,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393077474] [2024-06-27 18:10:38,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:38,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:38,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:38,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:38,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:38,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:38,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 138 transitions, 1007 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 18:10:38,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:38,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:38,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:39,986 INFO L124 PetriNetUnfolderBase]: 6675/10542 cut-off events. [2024-06-27 18:10:39,986 INFO L125 PetriNetUnfolderBase]: For 191333/191343 co-relation queries the response was YES. [2024-06-27 18:10:40,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47700 conditions, 10542 events. 6675/10542 cut-off events. For 191333/191343 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 68467 event pairs, 2522 based on Foata normal form. 6/10322 useless extension candidates. Maximal degree in co-relation 47650. Up to 9277 conditions per place. [2024-06-27 18:10:40,094 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 141 selfloop transitions, 26 changer transitions 0/188 dead transitions. [2024-06-27 18:10:40,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 188 transitions, 1531 flow [2024-06-27 18:10:40,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:10:40,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-06-27 18:10:40,096 INFO L175 Difference]: Start difference. First operand has 124 places, 138 transitions, 1007 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:10:40,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 188 transitions, 1531 flow [2024-06-27 18:10:40,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 188 transitions, 1427 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:40,227 INFO L231 Difference]: Finished difference. Result has 125 places, 145 transitions, 1049 flow [2024-06-27 18:10:40,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1049, PETRI_PLACES=125, PETRI_TRANSITIONS=145} [2024-06-27 18:10:40,229 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-27 18:10:40,229 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 145 transitions, 1049 flow [2024-06-27 18:10:40,230 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 18:10:40,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:40,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:40,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:10:40,230 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:40,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:40,231 INFO L85 PathProgramCache]: Analyzing trace with hash -961957914, now seen corresponding path program 1 times [2024-06-27 18:10:40,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:40,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177214668] [2024-06-27 18:10:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:40,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:40,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:40,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177214668] [2024-06-27 18:10:40,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177214668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:40,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:40,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:10:40,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479995670] [2024-06-27 18:10:40,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:40,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:10:40,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:10:40,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:10:41,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:10:41,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 145 transitions, 1049 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:41,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:41,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:10:41,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:42,752 INFO L124 PetriNetUnfolderBase]: 6627/10545 cut-off events. [2024-06-27 18:10:42,752 INFO L125 PetriNetUnfolderBase]: For 200439/200503 co-relation queries the response was YES. [2024-06-27 18:10:42,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48031 conditions, 10545 events. 6627/10545 cut-off events. For 200439/200503 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 68841 event pairs, 2740 based on Foata normal form. 13/10371 useless extension candidates. Maximal degree in co-relation 47979. Up to 9373 conditions per place. [2024-06-27 18:10:42,879 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 119 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-06-27 18:10:42,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 170 transitions, 1405 flow [2024-06-27 18:10:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:10:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:10:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:10:42,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2024-06-27 18:10:42,881 INFO L175 Difference]: Start difference. First operand has 125 places, 145 transitions, 1049 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:10:42,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 170 transitions, 1405 flow [2024-06-27 18:10:43,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 170 transitions, 1324 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:43,059 INFO L231 Difference]: Finished difference. Result has 126 places, 148 transitions, 1038 flow [2024-06-27 18:10:43,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1038, PETRI_PLACES=126, PETRI_TRANSITIONS=148} [2024-06-27 18:10:43,060 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-27 18:10:43,060 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 148 transitions, 1038 flow [2024-06-27 18:10:43,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:43,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:43,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:43,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:10:43,061 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 18:10:43,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash -52167900, now seen corresponding path program 1 times [2024-06-27 18:10:43,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:43,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636240490] [2024-06-27 18:10:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:44,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:44,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636240490] [2024-06-27 18:10:44,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636240490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:44,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:44,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:44,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279767944] [2024-06-27 18:10:44,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:44,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:44,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:44,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:44,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 148 transitions, 1038 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 18:10:44,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:44,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:44,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:46,084 INFO L124 PetriNetUnfolderBase]: 6695/10369 cut-off events. [2024-06-27 18:10:46,084 INFO L125 PetriNetUnfolderBase]: For 206925/206929 co-relation queries the response was YES. [2024-06-27 18:10:46,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49652 conditions, 10369 events. 6695/10369 cut-off events. For 206925/206929 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65691 event pairs, 2023 based on Foata normal form. 6/10200 useless extension candidates. Maximal degree in co-relation 49599. Up to 9329 conditions per place. [2024-06-27 18:10:46,168 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 179 selfloop transitions, 21 changer transitions 0/212 dead transitions. [2024-06-27 18:10:46,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 212 transitions, 1656 flow [2024-06-27 18:10:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:10:46,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-06-27 18:10:46,170 INFO L175 Difference]: Start difference. First operand has 126 places, 148 transitions, 1038 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:10:46,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 212 transitions, 1656 flow [2024-06-27 18:10:46,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 212 transitions, 1608 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:46,308 INFO L231 Difference]: Finished difference. Result has 131 places, 151 transitions, 1090 flow [2024-06-27 18:10:46,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1090, PETRI_PLACES=131, PETRI_TRANSITIONS=151} [2024-06-27 18:10:46,309 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-27 18:10:46,309 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 151 transitions, 1090 flow [2024-06-27 18:10:46,309 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 18:10:46,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:46,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:46,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:10:46,310 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 18:10:46,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1010611236, now seen corresponding path program 2 times [2024-06-27 18:10:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:46,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503633920] [2024-06-27 18:10:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:47,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503633920] [2024-06-27 18:10:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503633920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:47,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:47,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:47,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618064600] [2024-06-27 18:10:47,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:47,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:47,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:47,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:47,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:47,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 151 transitions, 1090 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 18:10:47,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:47,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:47,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:49,196 INFO L124 PetriNetUnfolderBase]: 6723/10393 cut-off events. [2024-06-27 18:10:49,197 INFO L125 PetriNetUnfolderBase]: For 222036/222044 co-relation queries the response was YES. [2024-06-27 18:10:49,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51086 conditions, 10393 events. 6723/10393 cut-off events. For 222036/222044 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 65591 event pairs, 2010 based on Foata normal form. 10/10232 useless extension candidates. Maximal degree in co-relation 51032. Up to 9150 conditions per place. [2024-06-27 18:10:49,287 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 154 selfloop transitions, 51 changer transitions 0/217 dead transitions. [2024-06-27 18:10:49,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 217 transitions, 1886 flow [2024-06-27 18:10:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 18:10:49,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-27 18:10:49,289 INFO L175 Difference]: Start difference. First operand has 131 places, 151 transitions, 1090 flow. Second operand 9 states and 237 transitions. [2024-06-27 18:10:49,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 217 transitions, 1886 flow [2024-06-27 18:10:49,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 217 transitions, 1810 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:49,466 INFO L231 Difference]: Finished difference. Result has 133 places, 157 transitions, 1230 flow [2024-06-27 18:10:49,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1230, PETRI_PLACES=133, PETRI_TRANSITIONS=157} [2024-06-27 18:10:49,467 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 77 predicate places. [2024-06-27 18:10:49,467 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 157 transitions, 1230 flow [2024-06-27 18:10:49,467 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 18:10:49,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:49,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:49,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:10:49,468 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 18:10:49,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash 472189586, now seen corresponding path program 1 times [2024-06-27 18:10:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923451004] [2024-06-27 18:10:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:50,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923451004] [2024-06-27 18:10:50,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923451004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:50,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:50,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:50,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167209605] [2024-06-27 18:10:50,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:50,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:50,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:50,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:50,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:50,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:50,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 157 transitions, 1230 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 18:10:50,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:50,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:50,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:52,233 INFO L124 PetriNetUnfolderBase]: 6826/10560 cut-off events. [2024-06-27 18:10:52,234 INFO L125 PetriNetUnfolderBase]: For 245988/245996 co-relation queries the response was YES. [2024-06-27 18:10:52,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53570 conditions, 10560 events. 6826/10560 cut-off events. For 245988/245996 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 66905 event pairs, 1775 based on Foata normal form. 9/10387 useless extension candidates. Maximal degree in co-relation 53515. Up to 8788 conditions per place. [2024-06-27 18:10:52,353 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 142 selfloop transitions, 73 changer transitions 0/227 dead transitions. [2024-06-27 18:10:52,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 227 transitions, 2058 flow [2024-06-27 18:10:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:10:52,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-27 18:10:52,356 INFO L175 Difference]: Start difference. First operand has 133 places, 157 transitions, 1230 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:10:52,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 227 transitions, 2058 flow [2024-06-27 18:10:52,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 227 transitions, 1960 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:52,631 INFO L231 Difference]: Finished difference. Result has 137 places, 163 transitions, 1384 flow [2024-06-27 18:10:52,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1384, PETRI_PLACES=137, PETRI_TRANSITIONS=163} [2024-06-27 18:10:52,632 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-27 18:10:52,632 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 163 transitions, 1384 flow [2024-06-27 18:10:52,632 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 18:10:52,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:52,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:52,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:10:52,633 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 18:10:52,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:52,633 INFO L85 PathProgramCache]: Analyzing trace with hash 476837726, now seen corresponding path program 2 times [2024-06-27 18:10:52,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:52,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507326767] [2024-06-27 18:10:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:52,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:53,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507326767] [2024-06-27 18:10:53,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507326767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:53,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:53,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:53,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464352091] [2024-06-27 18:10:53,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:53,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:53,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:53,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:53,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:53,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 163 transitions, 1384 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 18:10:53,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:53,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:53,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:55,618 INFO L124 PetriNetUnfolderBase]: 6925/10650 cut-off events. [2024-06-27 18:10:55,618 INFO L125 PetriNetUnfolderBase]: For 265031/265039 co-relation queries the response was YES. [2024-06-27 18:10:55,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56092 conditions, 10650 events. 6925/10650 cut-off events. For 265031/265039 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 66879 event pairs, 1910 based on Foata normal form. 9/10502 useless extension candidates. Maximal degree in co-relation 56035. Up to 8925 conditions per place. [2024-06-27 18:10:55,764 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 147 selfloop transitions, 73 changer transitions 0/232 dead transitions. [2024-06-27 18:10:55,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 232 transitions, 2358 flow [2024-06-27 18:10:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:10:55,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-27 18:10:55,767 INFO L175 Difference]: Start difference. First operand has 137 places, 163 transitions, 1384 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:10:55,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 232 transitions, 2358 flow [2024-06-27 18:10:56,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 232 transitions, 2212 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:56,041 INFO L231 Difference]: Finished difference. Result has 141 places, 169 transitions, 1496 flow [2024-06-27 18:10:56,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1496, PETRI_PLACES=141, PETRI_TRANSITIONS=169} [2024-06-27 18:10:56,042 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2024-06-27 18:10:56,042 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 169 transitions, 1496 flow [2024-06-27 18:10:56,042 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 18:10:56,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:56,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:56,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:10:56,043 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 18:10:56,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash 476831216, now seen corresponding path program 3 times [2024-06-27 18:10:56,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:56,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967283093] [2024-06-27 18:10:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:57,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:57,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967283093] [2024-06-27 18:10:57,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967283093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:57,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:57,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:57,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891335936] [2024-06-27 18:10:57,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:57,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:57,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:57,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:57,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:10:57,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 169 transitions, 1496 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 18:10:57,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:57,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:10:57,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:58,906 INFO L124 PetriNetUnfolderBase]: 6885/10653 cut-off events. [2024-06-27 18:10:58,906 INFO L125 PetriNetUnfolderBase]: For 274055/274063 co-relation queries the response was YES. [2024-06-27 18:10:58,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56440 conditions, 10653 events. 6885/10653 cut-off events. For 274055/274063 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 67503 event pairs, 1831 based on Foata normal form. 9/10478 useless extension candidates. Maximal degree in co-relation 56381. Up to 8838 conditions per place. [2024-06-27 18:10:59,034 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 147 selfloop transitions, 72 changer transitions 0/231 dead transitions. [2024-06-27 18:10:59,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 231 transitions, 2244 flow [2024-06-27 18:10:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:10:59,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-27 18:10:59,035 INFO L175 Difference]: Start difference. First operand has 141 places, 169 transitions, 1496 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:10:59,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 231 transitions, 2244 flow [2024-06-27 18:10:59,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 231 transitions, 2088 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:59,378 INFO L231 Difference]: Finished difference. Result has 145 places, 169 transitions, 1492 flow [2024-06-27 18:10:59,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1492, PETRI_PLACES=145, PETRI_TRANSITIONS=169} [2024-06-27 18:10:59,378 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2024-06-27 18:10:59,379 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 169 transitions, 1492 flow [2024-06-27 18:10:59,379 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 18:10:59,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:59,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:59,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:10:59,379 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:10:59,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:59,380 INFO L85 PathProgramCache]: Analyzing trace with hash 476831030, now seen corresponding path program 3 times [2024-06-27 18:10:59,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:59,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827491083] [2024-06-27 18:10:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:59,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:00,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827491083] [2024-06-27 18:11:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827491083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:00,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:00,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:00,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747142209] [2024-06-27 18:11:00,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:00,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:00,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:00,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:00,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:00,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 169 transitions, 1492 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 18:11:00,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:00,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:00,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:02,248 INFO L124 PetriNetUnfolderBase]: 6926/10690 cut-off events. [2024-06-27 18:11:02,249 INFO L125 PetriNetUnfolderBase]: For 285212/285220 co-relation queries the response was YES. [2024-06-27 18:11:02,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56917 conditions, 10690 events. 6926/10690 cut-off events. For 285212/285220 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 67537 event pairs, 2005 based on Foata normal form. 10/10524 useless extension candidates. Maximal degree in co-relation 56857. Up to 9429 conditions per place. [2024-06-27 18:11:02,368 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 165 selfloop transitions, 52 changer transitions 0/229 dead transitions. [2024-06-27 18:11:02,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 229 transitions, 2264 flow [2024-06-27 18:11:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:11:02,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-27 18:11:02,370 INFO L175 Difference]: Start difference. First operand has 145 places, 169 transitions, 1492 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:11:02,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 229 transitions, 2264 flow [2024-06-27 18:11:02,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 229 transitions, 2112 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:02,712 INFO L231 Difference]: Finished difference. Result has 146 places, 172 transitions, 1496 flow [2024-06-27 18:11:02,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1496, PETRI_PLACES=146, PETRI_TRANSITIONS=172} [2024-06-27 18:11:02,713 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-06-27 18:11:02,713 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 172 transitions, 1496 flow [2024-06-27 18:11:02,713 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 18:11:02,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:02,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:02,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:11:02,714 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 18:11:02,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 649320920, now seen corresponding path program 4 times [2024-06-27 18:11:02,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:02,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897758461] [2024-06-27 18:11:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:02,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:03,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897758461] [2024-06-27 18:11:03,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897758461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:03,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:03,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:03,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110429216] [2024-06-27 18:11:03,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:03,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:03,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:03,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:03,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:03,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:03,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 172 transitions, 1496 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 18:11:03,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:03,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:03,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:05,442 INFO L124 PetriNetUnfolderBase]: 6949/10742 cut-off events. [2024-06-27 18:11:05,442 INFO L125 PetriNetUnfolderBase]: For 298620/298628 co-relation queries the response was YES. [2024-06-27 18:11:05,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57256 conditions, 10742 events. 6949/10742 cut-off events. For 298620/298628 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 68100 event pairs, 2015 based on Foata normal form. 10/10571 useless extension candidates. Maximal degree in co-relation 57195. Up to 9453 conditions per place. [2024-06-27 18:11:05,531 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 163 selfloop transitions, 54 changer transitions 0/229 dead transitions. [2024-06-27 18:11:05,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 229 transitions, 2270 flow [2024-06-27 18:11:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:11:05,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177777777777778 [2024-06-27 18:11:05,540 INFO L175 Difference]: Start difference. First operand has 146 places, 172 transitions, 1496 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:11:05,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 229 transitions, 2270 flow [2024-06-27 18:11:05,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 229 transitions, 2156 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:05,759 INFO L231 Difference]: Finished difference. Result has 149 places, 175 transitions, 1548 flow [2024-06-27 18:11:05,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1548, PETRI_PLACES=149, PETRI_TRANSITIONS=175} [2024-06-27 18:11:05,760 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 93 predicate places. [2024-06-27 18:11:05,760 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 175 transitions, 1548 flow [2024-06-27 18:11:05,760 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 18:11:05,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:05,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:05,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:11:05,760 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 18:11:05,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash 649321106, now seen corresponding path program 4 times [2024-06-27 18:11:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:05,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718121740] [2024-06-27 18:11:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:06,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:06,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718121740] [2024-06-27 18:11:06,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718121740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:06,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:06,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684197962] [2024-06-27 18:11:06,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:06,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:06,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:07,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:07,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 175 transitions, 1548 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 18:11:07,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:07,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:07,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:08,979 INFO L124 PetriNetUnfolderBase]: 7055/10903 cut-off events. [2024-06-27 18:11:08,979 INFO L125 PetriNetUnfolderBase]: For 320557/320565 co-relation queries the response was YES. [2024-06-27 18:11:09,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58781 conditions, 10903 events. 7055/10903 cut-off events. For 320557/320565 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 69125 event pairs, 1826 based on Foata normal form. 9/10734 useless extension candidates. Maximal degree in co-relation 58719. Up to 9016 conditions per place. [2024-06-27 18:11:09,078 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 154 selfloop transitions, 76 changer transitions 0/242 dead transitions. [2024-06-27 18:11:09,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 242 transitions, 2552 flow [2024-06-27 18:11:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:11:09,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-27 18:11:09,080 INFO L175 Difference]: Start difference. First operand has 149 places, 175 transitions, 1548 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:11:09,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 242 transitions, 2552 flow [2024-06-27 18:11:09,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 242 transitions, 2436 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:09,335 INFO L231 Difference]: Finished difference. Result has 152 places, 181 transitions, 1678 flow [2024-06-27 18:11:09,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1678, PETRI_PLACES=152, PETRI_TRANSITIONS=181} [2024-06-27 18:11:09,336 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-27 18:11:09,336 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 181 transitions, 1678 flow [2024-06-27 18:11:09,337 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 18:11:09,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:09,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:11:09,337 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 18:11:09,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash -638264208, now seen corresponding path program 5 times [2024-06-27 18:11:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:09,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463488815] [2024-06-27 18:11:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:10,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:10,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463488815] [2024-06-27 18:11:10,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463488815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:10,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:10,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:10,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239714401] [2024-06-27 18:11:10,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:10,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:10,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:10,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:10,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:10,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 181 transitions, 1678 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 18:11:10,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:10,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:10,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:12,606 INFO L124 PetriNetUnfolderBase]: 7112/10978 cut-off events. [2024-06-27 18:11:12,606 INFO L125 PetriNetUnfolderBase]: For 336810/336818 co-relation queries the response was YES. [2024-06-27 18:11:12,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59926 conditions, 10978 events. 7112/10978 cut-off events. For 336810/336818 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 69551 event pairs, 1826 based on Foata normal form. 9/10809 useless extension candidates. Maximal degree in co-relation 59863. Up to 9055 conditions per place. [2024-06-27 18:11:12,752 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 155 selfloop transitions, 78 changer transitions 0/245 dead transitions. [2024-06-27 18:11:12,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 245 transitions, 2659 flow [2024-06-27 18:11:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:12,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:12,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-27 18:11:12,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422222222222223 [2024-06-27 18:11:12,754 INFO L175 Difference]: Start difference. First operand has 152 places, 181 transitions, 1678 flow. Second operand 9 states and 244 transitions. [2024-06-27 18:11:12,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 245 transitions, 2659 flow [2024-06-27 18:11:13,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 245 transitions, 2517 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:13,210 INFO L231 Difference]: Finished difference. Result has 156 places, 184 transitions, 1749 flow [2024-06-27 18:11:13,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1749, PETRI_PLACES=156, PETRI_TRANSITIONS=184} [2024-06-27 18:11:13,212 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 100 predicate places. [2024-06-27 18:11:13,212 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 184 transitions, 1749 flow [2024-06-27 18:11:13,212 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 18:11:13,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:13,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:13,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:11:13,213 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 18:11:13,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 649558256, now seen corresponding path program 6 times [2024-06-27 18:11:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768165870] [2024-06-27 18:11:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:14,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:14,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768165870] [2024-06-27 18:11:14,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768165870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:14,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:14,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602252787] [2024-06-27 18:11:14,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:14,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:14,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:14,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:14,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:14,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:14,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 184 transitions, 1749 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 18:11:14,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:14,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:14,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:16,699 INFO L124 PetriNetUnfolderBase]: 7091/10953 cut-off events. [2024-06-27 18:11:16,699 INFO L125 PetriNetUnfolderBase]: For 349302/349310 co-relation queries the response was YES. [2024-06-27 18:11:16,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60005 conditions, 10953 events. 7091/10953 cut-off events. For 349302/349310 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 69389 event pairs, 1835 based on Foata normal form. 9/10784 useless extension candidates. Maximal degree in co-relation 59941. Up to 9047 conditions per place. [2024-06-27 18:11:16,837 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 149 selfloop transitions, 81 changer transitions 0/242 dead transitions. [2024-06-27 18:11:16,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 242 transitions, 2527 flow [2024-06-27 18:11:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:11:16,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311111111111111 [2024-06-27 18:11:16,838 INFO L175 Difference]: Start difference. First operand has 156 places, 184 transitions, 1749 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:11:16,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 242 transitions, 2527 flow [2024-06-27 18:11:17,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 242 transitions, 2337 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:17,313 INFO L231 Difference]: Finished difference. Result has 159 places, 184 transitions, 1729 flow [2024-06-27 18:11:17,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1729, PETRI_PLACES=159, PETRI_TRANSITIONS=184} [2024-06-27 18:11:17,322 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 103 predicate places. [2024-06-27 18:11:17,323 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 184 transitions, 1729 flow [2024-06-27 18:11:17,323 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 18:11:17,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:17,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:17,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:11:17,324 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:17,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:17,324 INFO L85 PathProgramCache]: Analyzing trace with hash -787551478, now seen corresponding path program 1 times [2024-06-27 18:11:17,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:17,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617786865] [2024-06-27 18:11:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:17,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:18,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:18,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617786865] [2024-06-27 18:11:18,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617786865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:18,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:18,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:18,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817423677] [2024-06-27 18:11:18,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:18,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:18,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:18,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:11:18,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 184 transitions, 1729 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:18,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:18,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:11:18,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:19,904 INFO L124 PetriNetUnfolderBase]: 6967/10959 cut-off events. [2024-06-27 18:11:19,904 INFO L125 PetriNetUnfolderBase]: For 367039/367141 co-relation queries the response was YES. [2024-06-27 18:11:19,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58792 conditions, 10959 events. 6967/10959 cut-off events. For 367039/367141 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 70954 event pairs, 2394 based on Foata normal form. 21/10759 useless extension candidates. Maximal degree in co-relation 58727. Up to 9712 conditions per place. [2024-06-27 18:11:20,037 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 153 selfloop transitions, 18 changer transitions 0/220 dead transitions. [2024-06-27 18:11:20,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 220 transitions, 2303 flow [2024-06-27 18:11:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 18:11:20,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 18:11:20,039 INFO L175 Difference]: Start difference. First operand has 159 places, 184 transitions, 1729 flow. Second operand 6 states and 155 transitions. [2024-06-27 18:11:20,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 220 transitions, 2303 flow [2024-06-27 18:11:20,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 220 transitions, 2115 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:20,358 INFO L231 Difference]: Finished difference. Result has 157 places, 194 transitions, 1687 flow [2024-06-27 18:11:20,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1687, PETRI_PLACES=157, PETRI_TRANSITIONS=194} [2024-06-27 18:11:20,359 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 101 predicate places. [2024-06-27 18:11:20,359 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 194 transitions, 1687 flow [2024-06-27 18:11:20,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:20,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:20,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:20,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:11:20,360 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:20,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1698566016, now seen corresponding path program 7 times [2024-06-27 18:11:20,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:20,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979846958] [2024-06-27 18:11:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:20,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:21,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:21,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979846958] [2024-06-27 18:11:21,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979846958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:21,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:21,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577592459] [2024-06-27 18:11:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:21,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:21,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:21,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:21,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 194 transitions, 1687 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 18:11:21,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:21,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:21,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:23,281 INFO L124 PetriNetUnfolderBase]: 7275/11298 cut-off events. [2024-06-27 18:11:23,281 INFO L125 PetriNetUnfolderBase]: For 386522/386546 co-relation queries the response was YES. [2024-06-27 18:11:23,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62377 conditions, 11298 events. 7275/11298 cut-off events. For 386522/386546 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 72648 event pairs, 2327 based on Foata normal form. 6/11095 useless extension candidates. Maximal degree in co-relation 62310. Up to 10034 conditions per place. [2024-06-27 18:11:23,399 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 205 selfloop transitions, 25 changer transitions 0/245 dead transitions. [2024-06-27 18:11:23,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 245 transitions, 2333 flow [2024-06-27 18:11:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:11:23,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4911111111111111 [2024-06-27 18:11:23,401 INFO L175 Difference]: Start difference. First operand has 157 places, 194 transitions, 1687 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:11:23,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 245 transitions, 2333 flow [2024-06-27 18:11:23,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 245 transitions, 2307 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 18:11:23,689 INFO L231 Difference]: Finished difference. Result has 165 places, 197 transitions, 1771 flow [2024-06-27 18:11:23,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1771, PETRI_PLACES=165, PETRI_TRANSITIONS=197} [2024-06-27 18:11:23,690 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 109 predicate places. [2024-06-27 18:11:23,690 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 197 transitions, 1771 flow [2024-06-27 18:11:23,690 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 18:11:23,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:23,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:11:23,691 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:23,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2008106670, now seen corresponding path program 1 times [2024-06-27 18:11:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:23,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855683291] [2024-06-27 18:11:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:24,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855683291] [2024-06-27 18:11:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855683291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:24,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:24,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:24,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805198336] [2024-06-27 18:11:24,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:24,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:24,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:24,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:24,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 197 transitions, 1771 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 18:11:24,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:24,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:24,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:26,698 INFO L124 PetriNetUnfolderBase]: 7268/11287 cut-off events. [2024-06-27 18:11:26,699 INFO L125 PetriNetUnfolderBase]: For 411615/411675 co-relation queries the response was YES. [2024-06-27 18:11:26,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63470 conditions, 11287 events. 7268/11287 cut-off events. For 411615/411675 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 71733 event pairs, 2490 based on Foata normal form. 24/11070 useless extension candidates. Maximal degree in co-relation 63400. Up to 10040 conditions per place. [2024-06-27 18:11:26,846 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 194 selfloop transitions, 27 changer transitions 0/245 dead transitions. [2024-06-27 18:11:26,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 245 transitions, 2435 flow [2024-06-27 18:11:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:11:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:11:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:11:26,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 18:11:26,847 INFO L175 Difference]: Start difference. First operand has 165 places, 197 transitions, 1771 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:11:26,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 245 transitions, 2435 flow [2024-06-27 18:11:27,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 245 transitions, 2353 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:27,345 INFO L231 Difference]: Finished difference. Result has 168 places, 209 transitions, 1918 flow [2024-06-27 18:11:27,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1918, PETRI_PLACES=168, PETRI_TRANSITIONS=209} [2024-06-27 18:11:27,346 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 112 predicate places. [2024-06-27 18:11:27,346 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 209 transitions, 1918 flow [2024-06-27 18:11:27,346 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 18:11:27,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:27,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:27,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:11:27,347 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:27,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:27,347 INFO L85 PathProgramCache]: Analyzing trace with hash -417577820, now seen corresponding path program 8 times [2024-06-27 18:11:27,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:27,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053760546] [2024-06-27 18:11:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:27,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:28,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053760546] [2024-06-27 18:11:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053760546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:28,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:28,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:28,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052510299] [2024-06-27 18:11:28,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:28,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:28,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:28,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 209 transitions, 1918 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 18:11:28,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:28,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:28,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:30,517 INFO L124 PetriNetUnfolderBase]: 7306/11342 cut-off events. [2024-06-27 18:11:30,517 INFO L125 PetriNetUnfolderBase]: For 419833/419849 co-relation queries the response was YES. [2024-06-27 18:11:30,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64816 conditions, 11342 events. 7306/11342 cut-off events. For 419833/419849 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 72956 event pairs, 2279 based on Foata normal form. 4/11155 useless extension candidates. Maximal degree in co-relation 64743. Up to 9773 conditions per place. [2024-06-27 18:11:30,674 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 203 selfloop transitions, 46 changer transitions 0/265 dead transitions. [2024-06-27 18:11:30,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 265 transitions, 2798 flow [2024-06-27 18:11:30,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 18:11:30,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-06-27 18:11:30,676 INFO L175 Difference]: Start difference. First operand has 168 places, 209 transitions, 1918 flow. Second operand 9 states and 231 transitions. [2024-06-27 18:11:30,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 265 transitions, 2798 flow [2024-06-27 18:11:31,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 265 transitions, 2723 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 18:11:31,171 INFO L231 Difference]: Finished difference. Result has 173 places, 212 transitions, 1995 flow [2024-06-27 18:11:31,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1995, PETRI_PLACES=173, PETRI_TRANSITIONS=212} [2024-06-27 18:11:31,172 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2024-06-27 18:11:31,172 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 212 transitions, 1995 flow [2024-06-27 18:11:31,172 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 18:11:31,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:31,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:31,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:11:31,173 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 18:11:31,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1694756562, now seen corresponding path program 9 times [2024-06-27 18:11:31,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332609416] [2024-06-27 18:11:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:31,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:32,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:32,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332609416] [2024-06-27 18:11:32,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332609416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:32,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:32,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:32,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841123999] [2024-06-27 18:11:32,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:32,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:32,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:32,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:32,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:32,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:32,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 212 transitions, 1995 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 18:11:32,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:32,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:32,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:34,194 INFO L124 PetriNetUnfolderBase]: 7352/11380 cut-off events. [2024-06-27 18:11:34,194 INFO L125 PetriNetUnfolderBase]: For 438251/438267 co-relation queries the response was YES. [2024-06-27 18:11:34,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65837 conditions, 11380 events. 7352/11380 cut-off events. For 438251/438267 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 73036 event pairs, 2247 based on Foata normal form. 4/11199 useless extension candidates. Maximal degree in co-relation 65763. Up to 9812 conditions per place. [2024-06-27 18:11:34,344 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 199 selfloop transitions, 53 changer transitions 0/268 dead transitions. [2024-06-27 18:11:34,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 268 transitions, 2891 flow [2024-06-27 18:11:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:11:34,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2024-06-27 18:11:34,346 INFO L175 Difference]: Start difference. First operand has 173 places, 212 transitions, 1995 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:11:34,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 268 transitions, 2891 flow [2024-06-27 18:11:34,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 268 transitions, 2726 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:34,877 INFO L231 Difference]: Finished difference. Result has 175 places, 215 transitions, 2002 flow [2024-06-27 18:11:34,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2002, PETRI_PLACES=175, PETRI_TRANSITIONS=215} [2024-06-27 18:11:34,877 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2024-06-27 18:11:34,877 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 215 transitions, 2002 flow [2024-06-27 18:11:34,878 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 18:11:34,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:34,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:34,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:11:34,878 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 18:11:34,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:34,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1694756376, now seen corresponding path program 5 times [2024-06-27 18:11:34,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:34,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253836224] [2024-06-27 18:11:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:34,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:35,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:35,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253836224] [2024-06-27 18:11:35,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253836224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:35,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530934351] [2024-06-27 18:11:35,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:35,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:35,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 215 transitions, 2002 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 18:11:35,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:35,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:35,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:38,011 INFO L124 PetriNetUnfolderBase]: 7345/11397 cut-off events. [2024-06-27 18:11:38,011 INFO L125 PetriNetUnfolderBase]: For 448666/448682 co-relation queries the response was YES. [2024-06-27 18:11:38,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65953 conditions, 11397 events. 7345/11397 cut-off events. For 448666/448682 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 73462 event pairs, 2323 based on Foata normal form. 2/11209 useless extension candidates. Maximal degree in co-relation 65878. Up to 10243 conditions per place. [2024-06-27 18:11:38,142 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 224 selfloop transitions, 22 changer transitions 0/262 dead transitions. [2024-06-27 18:11:38,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 262 transitions, 2642 flow [2024-06-27 18:11:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:11:38,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2024-06-27 18:11:38,144 INFO L175 Difference]: Start difference. First operand has 175 places, 215 transitions, 2002 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:11:38,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 262 transitions, 2642 flow [2024-06-27 18:11:38,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 262 transitions, 2409 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:38,636 INFO L231 Difference]: Finished difference. Result has 176 places, 215 transitions, 1821 flow [2024-06-27 18:11:38,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1821, PETRI_PLACES=176, PETRI_TRANSITIONS=215} [2024-06-27 18:11:38,636 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 120 predicate places. [2024-06-27 18:11:38,636 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 215 transitions, 1821 flow [2024-06-27 18:11:38,637 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 18:11:38,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:38,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:38,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:11:38,637 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 18:11:38,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:38,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1694763072, now seen corresponding path program 10 times [2024-06-27 18:11:38,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:38,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366731969] [2024-06-27 18:11:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366731969] [2024-06-27 18:11:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366731969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:39,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658107486] [2024-06-27 18:11:39,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:39,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:39,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:39,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 215 transitions, 1821 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 18:11:39,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:39,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:39,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:41,399 INFO L124 PetriNetUnfolderBase]: 7337/11359 cut-off events. [2024-06-27 18:11:41,400 INFO L125 PetriNetUnfolderBase]: For 459802/459818 co-relation queries the response was YES. [2024-06-27 18:11:41,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65274 conditions, 11359 events. 7337/11359 cut-off events. For 459802/459818 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 72953 event pairs, 2247 based on Foata normal form. 4/11178 useless extension candidates. Maximal degree in co-relation 65198. Up to 9797 conditions per place. [2024-06-27 18:11:41,513 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 199 selfloop transitions, 51 changer transitions 0/266 dead transitions. [2024-06-27 18:11:41,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 266 transitions, 2485 flow [2024-06-27 18:11:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:11:41,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-27 18:11:41,514 INFO L175 Difference]: Start difference. First operand has 176 places, 215 transitions, 1821 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:11:41,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 266 transitions, 2485 flow [2024-06-27 18:11:41,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 266 transitions, 2341 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 18:11:41,928 INFO L231 Difference]: Finished difference. Result has 175 places, 215 transitions, 1787 flow [2024-06-27 18:11:41,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1787, PETRI_PLACES=175, PETRI_TRANSITIONS=215} [2024-06-27 18:11:41,929 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2024-06-27 18:11:41,929 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 215 transitions, 1787 flow [2024-06-27 18:11:41,929 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 18:11:41,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:41,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:41,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:11:41,930 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 18:11:41,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash -725637466, now seen corresponding path program 2 times [2024-06-27 18:11:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:41,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688490] [2024-06-27 18:11:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:42,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:42,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688490] [2024-06-27 18:11:42,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:42,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:42,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399298189] [2024-06-27 18:11:42,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:42,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:11:42,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 215 transitions, 1787 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:42,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:42,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:11:42,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:44,116 INFO L124 PetriNetUnfolderBase]: 7099/11213 cut-off events. [2024-06-27 18:11:44,116 INFO L125 PetriNetUnfolderBase]: For 481337/481473 co-relation queries the response was YES. [2024-06-27 18:11:44,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63950 conditions, 11213 events. 7099/11213 cut-off events. For 481337/481473 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 73207 event pairs, 2706 based on Foata normal form. 21/11002 useless extension candidates. Maximal degree in co-relation 63873. Up to 9913 conditions per place. [2024-06-27 18:11:44,254 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 167 selfloop transitions, 13 changer transitions 0/232 dead transitions. [2024-06-27 18:11:44,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 232 transitions, 2195 flow [2024-06-27 18:11:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:11:44,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 18:11:44,256 INFO L175 Difference]: Start difference. First operand has 175 places, 215 transitions, 1787 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:11:44,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 232 transitions, 2195 flow [2024-06-27 18:11:44,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 232 transitions, 2051 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:44,891 INFO L231 Difference]: Finished difference. Result has 172 places, 215 transitions, 1675 flow [2024-06-27 18:11:44,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1675, PETRI_PLACES=172, PETRI_TRANSITIONS=215} [2024-06-27 18:11:44,891 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 116 predicate places. [2024-06-27 18:11:44,892 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 215 transitions, 1675 flow [2024-06-27 18:11:44,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:44,892 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] [2024-06-27 18:11:44,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:11:44,892 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_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 18:11:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash -732294809, now seen corresponding path program 1 times [2024-06-27 18:11:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799652656] [2024-06-27 18:11:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:44,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:45,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:45,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799652656] [2024-06-27 18:11:45,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799652656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:45,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:45,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:45,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295650611] [2024-06-27 18:11:45,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:45,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:45,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:45,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:45,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:45,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:11:45,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 215 transitions, 1675 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:45,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:45,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:11:45,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:47,402 INFO L124 PetriNetUnfolderBase]: 8011/12165 cut-off events. [2024-06-27 18:11:47,402 INFO L125 PetriNetUnfolderBase]: For 502030/502066 co-relation queries the response was YES. [2024-06-27 18:11:47,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68911 conditions, 12165 events. 8011/12165 cut-off events. For 502030/502066 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 75152 event pairs, 2847 based on Foata normal form. 11/11925 useless extension candidates. Maximal degree in co-relation 68833. Up to 11219 conditions per place. [2024-06-27 18:11:47,562 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 202 selfloop transitions, 24 changer transitions 0/245 dead transitions. [2024-06-27 18:11:47,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 245 transitions, 2363 flow [2024-06-27 18:11:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:11:47,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2024-06-27 18:11:47,564 INFO L175 Difference]: Start difference. First operand has 172 places, 215 transitions, 1675 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:11:47,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 245 transitions, 2363 flow [2024-06-27 18:11:48,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 245 transitions, 2316 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:48,136 INFO L231 Difference]: Finished difference. Result has 173 places, 221 transitions, 1757 flow [2024-06-27 18:11:48,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1757, PETRI_PLACES=173, PETRI_TRANSITIONS=221} [2024-06-27 18:11:48,137 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2024-06-27 18:11:48,137 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 221 transitions, 1757 flow [2024-06-27 18:11:48,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:48,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:48,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:48,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:11:48,138 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:48,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash 457357015, now seen corresponding path program 2 times [2024-06-27 18:11:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957417938] [2024-06-27 18:11:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:48,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:48,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:48,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957417938] [2024-06-27 18:11:48,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957417938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:48,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:11:48,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94248255] [2024-06-27 18:11:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:48,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:11:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:11:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:11:48,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:11:48,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 221 transitions, 1757 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:48,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:48,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:11:48,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:50,896 INFO L124 PetriNetUnfolderBase]: 8006/12154 cut-off events. [2024-06-27 18:11:50,896 INFO L125 PetriNetUnfolderBase]: For 522645/522681 co-relation queries the response was YES. [2024-06-27 18:11:50,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70203 conditions, 12154 events. 8006/12154 cut-off events. For 522645/522681 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 75009 event pairs, 2848 based on Foata normal form. 15/11922 useless extension candidates. Maximal degree in co-relation 70125. Up to 11213 conditions per place. [2024-06-27 18:11:51,000 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 198 selfloop transitions, 24 changer transitions 0/241 dead transitions. [2024-06-27 18:11:51,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 241 transitions, 2265 flow [2024-06-27 18:11:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:11:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:11:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:11:51,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633333333333333 [2024-06-27 18:11:51,001 INFO L175 Difference]: Start difference. First operand has 173 places, 221 transitions, 1757 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:11:51,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 241 transitions, 2265 flow [2024-06-27 18:11:51,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 241 transitions, 2208 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 18:11:51,461 INFO L231 Difference]: Finished difference. Result has 177 places, 221 transitions, 1755 flow [2024-06-27 18:11:51,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1755, PETRI_PLACES=177, PETRI_TRANSITIONS=221} [2024-06-27 18:11:51,461 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 121 predicate places. [2024-06-27 18:11:51,461 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 221 transitions, 1755 flow [2024-06-27 18:11:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:51,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:51,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:51,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:11:51,462 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 18:11:51,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1749161230, now seen corresponding path program 1 times [2024-06-27 18:11:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:51,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028984434] [2024-06-27 18:11:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:51,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:52,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:52,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028984434] [2024-06-27 18:11:52,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028984434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:52,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:52,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:52,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835243482] [2024-06-27 18:11:52,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:52,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:52,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:52,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 221 transitions, 1755 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 18:11:52,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:52,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:52,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:55,041 INFO L124 PetriNetUnfolderBase]: 7414/11549 cut-off events. [2024-06-27 18:11:55,041 INFO L125 PetriNetUnfolderBase]: For 525922/525950 co-relation queries the response was YES. [2024-06-27 18:11:55,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67886 conditions, 11549 events. 7414/11549 cut-off events. For 525922/525950 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 74590 event pairs, 2018 based on Foata normal form. 2/11322 useless extension candidates. Maximal degree in co-relation 67806. Up to 10238 conditions per place. [2024-06-27 18:11:55,134 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 259 selfloop transitions, 27 changer transitions 0/304 dead transitions. [2024-06-27 18:11:55,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 304 transitions, 2643 flow [2024-06-27 18:11:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-06-27 18:11:55,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145454545454545 [2024-06-27 18:11:55,135 INFO L175 Difference]: Start difference. First operand has 177 places, 221 transitions, 1755 flow. Second operand 11 states and 283 transitions. [2024-06-27 18:11:55,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 304 transitions, 2643 flow [2024-06-27 18:11:55,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 304 transitions, 2575 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:55,688 INFO L231 Difference]: Finished difference. Result has 183 places, 224 transitions, 1814 flow [2024-06-27 18:11:55,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1814, PETRI_PLACES=183, PETRI_TRANSITIONS=224} [2024-06-27 18:11:55,689 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 127 predicate places. [2024-06-27 18:11:55,689 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 224 transitions, 1814 flow [2024-06-27 18:11:55,690 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 18:11:55,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:55,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:11:55,690 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 18:11:55,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1620778667, now seen corresponding path program 1 times [2024-06-27 18:11:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:55,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410887842] [2024-06-27 18:11:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:55,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:56,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410887842] [2024-06-27 18:11:56,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410887842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:56,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:56,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:56,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378922109] [2024-06-27 18:11:56,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:56,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:56,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:56,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:56,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:56,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:11:56,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 224 transitions, 1814 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 18:11:56,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:56,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:11:56,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:58,812 INFO L124 PetriNetUnfolderBase]: 7506/11774 cut-off events. [2024-06-27 18:11:58,812 INFO L125 PetriNetUnfolderBase]: For 558370/558402 co-relation queries the response was YES. [2024-06-27 18:11:58,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70281 conditions, 11774 events. 7506/11774 cut-off events. For 558370/558402 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 76770 event pairs, 2006 based on Foata normal form. 4/11509 useless extension candidates. Maximal degree in co-relation 70200. Up to 10388 conditions per place. [2024-06-27 18:11:58,937 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 255 selfloop transitions, 24 changer transitions 0/297 dead transitions. [2024-06-27 18:11:58,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 297 transitions, 2658 flow [2024-06-27 18:11:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 18:11:58,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514 [2024-06-27 18:11:58,939 INFO L175 Difference]: Start difference. First operand has 183 places, 224 transitions, 1814 flow. Second operand 10 states and 257 transitions. [2024-06-27 18:11:58,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 297 transitions, 2658 flow [2024-06-27 18:11:59,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 297 transitions, 2557 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:59,385 INFO L231 Difference]: Finished difference. Result has 184 places, 227 transitions, 1835 flow [2024-06-27 18:11:59,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1835, PETRI_PLACES=184, PETRI_TRANSITIONS=227} [2024-06-27 18:11:59,386 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 128 predicate places. [2024-06-27 18:11:59,386 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 227 transitions, 1835 flow [2024-06-27 18:11:59,386 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 18:11:59,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:59,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:59,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:11:59,387 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:11:59,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:59,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1617054017, now seen corresponding path program 2 times [2024-06-27 18:11:59,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:59,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157591806] [2024-06-27 18:11:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:59,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:00,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:00,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157591806] [2024-06-27 18:12:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157591806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60797479] [2024-06-27 18:12:00,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:00,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:00,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 227 transitions, 1835 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 18:12:00,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:00,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:00,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:02,407 INFO L124 PetriNetUnfolderBase]: 7623/11772 cut-off events. [2024-06-27 18:12:02,407 INFO L125 PetriNetUnfolderBase]: For 595991/596023 co-relation queries the response was YES. [2024-06-27 18:12:02,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73119 conditions, 11772 events. 7623/11772 cut-off events. For 595991/596023 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 75107 event pairs, 1650 based on Foata normal form. 5/11565 useless extension candidates. Maximal degree in co-relation 73037. Up to 9154 conditions per place. [2024-06-27 18:12:02,538 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 179 selfloop transitions, 114 changer transitions 0/311 dead transitions. [2024-06-27 18:12:02,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 311 transitions, 3245 flow [2024-06-27 18:12:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-27 18:12:02,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546 [2024-06-27 18:12:02,540 INFO L175 Difference]: Start difference. First operand has 184 places, 227 transitions, 1835 flow. Second operand 10 states and 273 transitions. [2024-06-27 18:12:02,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 311 transitions, 3245 flow [2024-06-27 18:12:03,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 311 transitions, 3147 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:03,044 INFO L231 Difference]: Finished difference. Result has 186 places, 236 transitions, 2177 flow [2024-06-27 18:12:03,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2177, PETRI_PLACES=186, PETRI_TRANSITIONS=236} [2024-06-27 18:12:03,058 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 130 predicate places. [2024-06-27 18:12:03,058 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 236 transitions, 2177 flow [2024-06-27 18:12:03,058 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 18:12:03,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:03,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:03,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:12:03,058 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:03,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1264178242, now seen corresponding path program 2 times [2024-06-27 18:12:03,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:03,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828319622] [2024-06-27 18:12:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:03,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:04,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828319622] [2024-06-27 18:12:04,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828319622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:04,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:04,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:04,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088107974] [2024-06-27 18:12:04,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:04,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:04,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:04,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:04,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:04,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:04,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 236 transitions, 2177 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 18:12:04,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:04,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:04,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:06,085 INFO L124 PetriNetUnfolderBase]: 7623/11824 cut-off events. [2024-06-27 18:12:06,086 INFO L125 PetriNetUnfolderBase]: For 619507/619539 co-relation queries the response was YES. [2024-06-27 18:12:06,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74983 conditions, 11824 events. 7623/11824 cut-off events. For 619507/619539 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 76158 event pairs, 1993 based on Foata normal form. 6/11604 useless extension candidates. Maximal degree in co-relation 74900. Up to 10331 conditions per place. [2024-06-27 18:12:06,220 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 227 selfloop transitions, 60 changer transitions 0/305 dead transitions. [2024-06-27 18:12:06,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 305 transitions, 3033 flow [2024-06-27 18:12:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 18:12:06,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518 [2024-06-27 18:12:06,221 INFO L175 Difference]: Start difference. First operand has 186 places, 236 transitions, 2177 flow. Second operand 10 states and 259 transitions. [2024-06-27 18:12:06,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 305 transitions, 3033 flow [2024-06-27 18:12:06,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 305 transitions, 2862 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:12:06,901 INFO L231 Difference]: Finished difference. Result has 191 places, 239 transitions, 2208 flow [2024-06-27 18:12:06,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2208, PETRI_PLACES=191, PETRI_TRANSITIONS=239} [2024-06-27 18:12:06,902 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 135 predicate places. [2024-06-27 18:12:06,902 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 239 transitions, 2208 flow [2024-06-27 18:12:06,903 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 18:12:06,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:06,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:06,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:12:06,903 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 18:12:06,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1752970665, now seen corresponding path program 3 times [2024-06-27 18:12:06,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:06,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789626031] [2024-06-27 18:12:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:06,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:08,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789626031] [2024-06-27 18:12:08,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789626031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:08,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:08,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:08,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917868332] [2024-06-27 18:12:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:08,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:08,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:08,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:08,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 239 transitions, 2208 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 18:12:08,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:08,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:08,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:09,969 INFO L124 PetriNetUnfolderBase]: 7636/11745 cut-off events. [2024-06-27 18:12:09,970 INFO L125 PetriNetUnfolderBase]: For 640871/640903 co-relation queries the response was YES. [2024-06-27 18:12:10,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76075 conditions, 11745 events. 7636/11745 cut-off events. For 640871/640903 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 74706 event pairs, 1649 based on Foata normal form. 5/11554 useless extension candidates. Maximal degree in co-relation 75990. Up to 9178 conditions per place. [2024-06-27 18:12:10,127 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 182 selfloop transitions, 113 changer transitions 0/313 dead transitions. [2024-06-27 18:12:10,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 313 transitions, 3240 flow [2024-06-27 18:12:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-27 18:12:10,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546 [2024-06-27 18:12:10,128 INFO L175 Difference]: Start difference. First operand has 191 places, 239 transitions, 2208 flow. Second operand 10 states and 273 transitions. [2024-06-27 18:12:10,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 313 transitions, 3240 flow [2024-06-27 18:12:10,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 313 transitions, 3030 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:10,801 INFO L231 Difference]: Finished difference. Result has 193 places, 239 transitions, 2232 flow [2024-06-27 18:12:10,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2232, PETRI_PLACES=193, PETRI_TRANSITIONS=239} [2024-06-27 18:12:10,801 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 137 predicate places. [2024-06-27 18:12:10,801 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 239 transitions, 2232 flow [2024-06-27 18:12:10,802 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 18:12:10,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:10,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:10,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:12:10,802 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 18:12:10,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:10,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1896866775, now seen corresponding path program 4 times [2024-06-27 18:12:10,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:10,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948239711] [2024-06-27 18:12:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:10,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:11,900 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 18:12:11,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:11,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948239711] [2024-06-27 18:12:11,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948239711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:11,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:11,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:11,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100400432] [2024-06-27 18:12:11,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:11,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:11,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:11,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:12,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:12,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 239 transitions, 2232 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 18:12:12,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:12,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:12,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:14,015 INFO L124 PetriNetUnfolderBase]: 7794/11974 cut-off events. [2024-06-27 18:12:14,016 INFO L125 PetriNetUnfolderBase]: For 677265/677297 co-relation queries the response was YES. [2024-06-27 18:12:14,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79019 conditions, 11974 events. 7794/11974 cut-off events. For 677265/677297 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 76181 event pairs, 1678 based on Foata normal form. 5/11783 useless extension candidates. Maximal degree in co-relation 78933. Up to 9311 conditions per place. [2024-06-27 18:12:14,150 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 190 selfloop transitions, 115 changer transitions 0/323 dead transitions. [2024-06-27 18:12:14,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 323 transitions, 3894 flow [2024-06-27 18:12:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-06-27 18:12:14,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552 [2024-06-27 18:12:14,152 INFO L175 Difference]: Start difference. First operand has 193 places, 239 transitions, 2232 flow. Second operand 10 states and 276 transitions. [2024-06-27 18:12:14,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 323 transitions, 3894 flow [2024-06-27 18:12:14,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 323 transitions, 3632 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:14,720 INFO L231 Difference]: Finished difference. Result has 194 places, 248 transitions, 2406 flow [2024-06-27 18:12:14,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2406, PETRI_PLACES=194, PETRI_TRANSITIONS=248} [2024-06-27 18:12:14,720 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 138 predicate places. [2024-06-27 18:12:14,721 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 248 transitions, 2406 flow [2024-06-27 18:12:14,721 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 18:12:14,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:14,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:14,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:12:14,721 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 18:12:14,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1897068585, now seen corresponding path program 5 times [2024-06-27 18:12:14,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:14,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201068187] [2024-06-27 18:12:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:14,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201068187] [2024-06-27 18:12:15,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201068187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:15,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:15,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080754449] [2024-06-27 18:12:15,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:15,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:15,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:15,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 248 transitions, 2406 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 18:12:15,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:15,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:15,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:17,853 INFO L124 PetriNetUnfolderBase]: 7784/12070 cut-off events. [2024-06-27 18:12:17,854 INFO L125 PetriNetUnfolderBase]: For 693034/693066 co-relation queries the response was YES. [2024-06-27 18:12:17,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79053 conditions, 12070 events. 7784/12070 cut-off events. For 693034/693066 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 77927 event pairs, 1745 based on Foata normal form. 5/11841 useless extension candidates. Maximal degree in co-relation 78966. Up to 9303 conditions per place. [2024-06-27 18:12:17,992 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 184 selfloop transitions, 118 changer transitions 0/320 dead transitions. [2024-06-27 18:12:17,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 320 transitions, 3660 flow [2024-06-27 18:12:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-27 18:12:17,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542 [2024-06-27 18:12:17,993 INFO L175 Difference]: Start difference. First operand has 194 places, 248 transitions, 2406 flow. Second operand 10 states and 271 transitions. [2024-06-27 18:12:17,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 320 transitions, 3660 flow [2024-06-27 18:12:18,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 320 transitions, 3411 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 18:12:18,512 INFO L231 Difference]: Finished difference. Result has 199 places, 248 transitions, 2401 flow [2024-06-27 18:12:18,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2401, PETRI_PLACES=199, PETRI_TRANSITIONS=248} [2024-06-27 18:12:18,513 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 143 predicate places. [2024-06-27 18:12:18,513 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 248 transitions, 2401 flow [2024-06-27 18:12:18,513 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 18:12:18,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:18,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:18,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:12:18,514 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 18:12:18,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1896861040, now seen corresponding path program 3 times [2024-06-27 18:12:18,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:18,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443080451] [2024-06-27 18:12:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:18,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:19,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:19,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443080451] [2024-06-27 18:12:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443080451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:19,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:19,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:19,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052212352] [2024-06-27 18:12:19,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:19,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:19,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:19,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 248 transitions, 2401 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 18:12:19,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:19,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:19,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:21,924 INFO L124 PetriNetUnfolderBase]: 7802/12076 cut-off events. [2024-06-27 18:12:21,925 INFO L125 PetriNetUnfolderBase]: For 710572/710604 co-relation queries the response was YES. [2024-06-27 18:12:21,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79344 conditions, 12076 events. 7802/12076 cut-off events. For 710572/710604 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 77949 event pairs, 1990 based on Foata normal form. 6/11853 useless extension candidates. Maximal degree in co-relation 79256. Up to 10582 conditions per place. [2024-06-27 18:12:22,049 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 238 selfloop transitions, 58 changer transitions 0/314 dead transitions. [2024-06-27 18:12:22,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 314 transitions, 3273 flow [2024-06-27 18:12:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 18:12:22,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514 [2024-06-27 18:12:22,050 INFO L175 Difference]: Start difference. First operand has 199 places, 248 transitions, 2401 flow. Second operand 10 states and 257 transitions. [2024-06-27 18:12:22,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 314 transitions, 3273 flow [2024-06-27 18:12:23,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 314 transitions, 3068 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:23,004 INFO L231 Difference]: Finished difference. Result has 201 places, 251 transitions, 2400 flow [2024-06-27 18:12:23,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2400, PETRI_PLACES=201, PETRI_TRANSITIONS=251} [2024-06-27 18:12:23,004 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 145 predicate places. [2024-06-27 18:12:23,004 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 251 transitions, 2400 flow [2024-06-27 18:12:23,005 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 18:12:23,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:23,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:23,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:12:23,005 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 18:12:23,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:23,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1735259045, now seen corresponding path program 6 times [2024-06-27 18:12:23,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:23,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535327799] [2024-06-27 18:12:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:23,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:24,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:24,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535327799] [2024-06-27 18:12:24,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535327799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:24,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:24,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255231451] [2024-06-27 18:12:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:24,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:24,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:24,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:24,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 251 transitions, 2400 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 18:12:24,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:24,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:24,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:26,171 INFO L124 PetriNetUnfolderBase]: 7797/12091 cut-off events. [2024-06-27 18:12:26,172 INFO L125 PetriNetUnfolderBase]: For 736232/736264 co-relation queries the response was YES. [2024-06-27 18:12:26,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79704 conditions, 12091 events. 7797/12091 cut-off events. For 736232/736264 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 77960 event pairs, 1734 based on Foata normal form. 5/11861 useless extension candidates. Maximal degree in co-relation 79615. Up to 9327 conditions per place. [2024-06-27 18:12:26,291 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 188 selfloop transitions, 116 changer transitions 0/322 dead transitions. [2024-06-27 18:12:26,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 322 transitions, 3458 flow [2024-06-27 18:12:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-27 18:12:26,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542 [2024-06-27 18:12:26,293 INFO L175 Difference]: Start difference. First operand has 201 places, 251 transitions, 2400 flow. Second operand 10 states and 271 transitions. [2024-06-27 18:12:26,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 322 transitions, 3458 flow [2024-06-27 18:12:27,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 322 transitions, 3240 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:27,053 INFO L231 Difference]: Finished difference. Result has 203 places, 251 transitions, 2422 flow [2024-06-27 18:12:27,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2422, PETRI_PLACES=203, PETRI_TRANSITIONS=251} [2024-06-27 18:12:27,054 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 147 predicate places. [2024-06-27 18:12:27,054 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 251 transitions, 2422 flow [2024-06-27 18:12:27,054 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 18:12:27,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:27,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:27,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:12:27,055 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:27,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:27,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1491739761, now seen corresponding path program 1 times [2024-06-27 18:12:27,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:27,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52723022] [2024-06-27 18:12:27,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:27,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:27,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:27,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52723022] [2024-06-27 18:12:27,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52723022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:27,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:27,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151586665] [2024-06-27 18:12:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:27,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:27,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:27,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 251 transitions, 2422 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:27,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:27,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:27,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:29,810 INFO L124 PetriNetUnfolderBase]: 8230/12681 cut-off events. [2024-06-27 18:12:29,810 INFO L125 PetriNetUnfolderBase]: For 773763/773847 co-relation queries the response was YES. [2024-06-27 18:12:29,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82516 conditions, 12681 events. 8230/12681 cut-off events. For 773763/773847 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 80621 event pairs, 2494 based on Foata normal form. 9/12385 useless extension candidates. Maximal degree in co-relation 82426. Up to 11273 conditions per place. [2024-06-27 18:12:29,928 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 222 selfloop transitions, 26 changer transitions 0/294 dead transitions. [2024-06-27 18:12:29,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 294 transitions, 3222 flow [2024-06-27 18:12:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:12:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:12:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 18:12:29,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-06-27 18:12:29,929 INFO L175 Difference]: Start difference. First operand has 203 places, 251 transitions, 2422 flow. Second operand 7 states and 178 transitions. [2024-06-27 18:12:29,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 294 transitions, 3222 flow [2024-06-27 18:12:30,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 294 transitions, 2982 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:30,449 INFO L231 Difference]: Finished difference. Result has 201 places, 257 transitions, 2318 flow [2024-06-27 18:12:30,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2318, PETRI_PLACES=201, PETRI_TRANSITIONS=257} [2024-06-27 18:12:30,449 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 145 predicate places. [2024-06-27 18:12:30,449 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 257 transitions, 2318 flow [2024-06-27 18:12:30,449 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 18:12:30,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:30,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:30,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:12:30,450 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 18:12:30,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1345881227, now seen corresponding path program 7 times [2024-06-27 18:12:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:30,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249809263] [2024-06-27 18:12:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249809263] [2024-06-27 18:12:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249809263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:31,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:31,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:31,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115806667] [2024-06-27 18:12:31,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:31,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:31,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:31,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 257 transitions, 2318 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 18:12:31,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:31,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:31,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:33,739 INFO L124 PetriNetUnfolderBase]: 8068/12440 cut-off events. [2024-06-27 18:12:33,739 INFO L125 PetriNetUnfolderBase]: For 808260/808312 co-relation queries the response was YES. [2024-06-27 18:12:33,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83629 conditions, 12440 events. 8068/12440 cut-off events. For 808260/808312 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 79829 event pairs, 1784 based on Foata normal form. 5/12212 useless extension candidates. Maximal degree in co-relation 83538. Up to 9594 conditions per place. [2024-06-27 18:12:33,860 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 197 selfloop transitions, 121 changer transitions 0/338 dead transitions. [2024-06-27 18:12:33,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 338 transitions, 4052 flow [2024-06-27 18:12:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-06-27 18:12:33,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548 [2024-06-27 18:12:33,862 INFO L175 Difference]: Start difference. First operand has 201 places, 257 transitions, 2318 flow. Second operand 10 states and 274 transitions. [2024-06-27 18:12:33,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 338 transitions, 4052 flow [2024-06-27 18:12:34,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 338 transitions, 3996 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:12:34,937 INFO L231 Difference]: Finished difference. Result has 208 places, 266 transitions, 2710 flow [2024-06-27 18:12:34,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2710, PETRI_PLACES=208, PETRI_TRANSITIONS=266} [2024-06-27 18:12:34,938 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 152 predicate places. [2024-06-27 18:12:34,938 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 266 transitions, 2710 flow [2024-06-27 18:12:34,938 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 18:12:34,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:34,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:12:34,939 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 18:12:34,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1541319790, now seen corresponding path program 4 times [2024-06-27 18:12:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:34,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951158547] [2024-06-27 18:12:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:34,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951158547] [2024-06-27 18:12:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951158547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:36,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:36,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852099578] [2024-06-27 18:12:36,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:36,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:36,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:36,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 266 transitions, 2710 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 18:12:36,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:36,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:36,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:38,450 INFO L124 PetriNetUnfolderBase]: 8092/12516 cut-off events. [2024-06-27 18:12:38,451 INFO L125 PetriNetUnfolderBase]: For 833744/833792 co-relation queries the response was YES. [2024-06-27 18:12:38,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85553 conditions, 12516 events. 8092/12516 cut-off events. For 833744/833792 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 81066 event pairs, 2043 based on Foata normal form. 6/12265 useless extension candidates. Maximal degree in co-relation 85460. Up to 10964 conditions per place. [2024-06-27 18:12:38,565 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 252 selfloop transitions, 57 changer transitions 0/329 dead transitions. [2024-06-27 18:12:38,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 329 transitions, 3606 flow [2024-06-27 18:12:38,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:38,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:12:38,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-27 18:12:38,567 INFO L175 Difference]: Start difference. First operand has 208 places, 266 transitions, 2710 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:12:38,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 329 transitions, 3606 flow [2024-06-27 18:12:39,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 329 transitions, 3378 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 18:12:39,484 INFO L231 Difference]: Finished difference. Result has 213 places, 269 transitions, 2690 flow [2024-06-27 18:12:39,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2690, PETRI_PLACES=213, PETRI_TRANSITIONS=269} [2024-06-27 18:12:39,484 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 157 predicate places. [2024-06-27 18:12:39,484 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 269 transitions, 2690 flow [2024-06-27 18:12:39,484 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 18:12:39,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:39,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:39,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:12:39,485 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 18:12:39,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1345886807, now seen corresponding path program 8 times [2024-06-27 18:12:39,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:39,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045987926] [2024-06-27 18:12:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:39,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045987926] [2024-06-27 18:12:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045987926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097691902] [2024-06-27 18:12:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:40,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:40,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:40,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 269 transitions, 2690 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 18:12:40,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:40,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:40,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:42,661 INFO L124 PetriNetUnfolderBase]: 8081/12461 cut-off events. [2024-06-27 18:12:42,662 INFO L125 PetriNetUnfolderBase]: For 858902/858950 co-relation queries the response was YES. [2024-06-27 18:12:42,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85483 conditions, 12461 events. 8081/12461 cut-off events. For 858902/858950 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 79994 event pairs, 1782 based on Foata normal form. 5/12232 useless extension candidates. Maximal degree in co-relation 85389. Up to 9618 conditions per place. [2024-06-27 18:12:42,795 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 196 selfloop transitions, 123 changer transitions 0/339 dead transitions. [2024-06-27 18:12:42,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 339 transitions, 4018 flow [2024-06-27 18:12:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-27 18:12:42,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542 [2024-06-27 18:12:42,797 INFO L175 Difference]: Start difference. First operand has 213 places, 269 transitions, 2690 flow. Second operand 10 states and 271 transitions. [2024-06-27 18:12:42,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 339 transitions, 4018 flow [2024-06-27 18:12:43,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 339 transitions, 3796 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:43,819 INFO L231 Difference]: Finished difference. Result has 215 places, 269 transitions, 2722 flow [2024-06-27 18:12:43,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2722, PETRI_PLACES=215, PETRI_TRANSITIONS=269} [2024-06-27 18:12:43,819 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 159 predicate places. [2024-06-27 18:12:43,819 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 269 transitions, 2722 flow [2024-06-27 18:12:43,820 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 18:12:43,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:43,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:43,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:12:43,820 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 18:12:43,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1345679417, now seen corresponding path program 9 times [2024-06-27 18:12:43,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:43,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394704672] [2024-06-27 18:12:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:43,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:44,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394704672] [2024-06-27 18:12:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394704672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406242277] [2024-06-27 18:12:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:44,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:44,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:44,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 269 transitions, 2722 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 18:12:44,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:44,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:44,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:46,885 INFO L124 PetriNetUnfolderBase]: 8127/12525 cut-off events. [2024-06-27 18:12:46,886 INFO L125 PetriNetUnfolderBase]: For 884708/884756 co-relation queries the response was YES. [2024-06-27 18:12:46,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86803 conditions, 12525 events. 8127/12525 cut-off events. For 884708/884756 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 80410 event pairs, 1811 based on Foata normal form. 5/12296 useless extension candidates. Maximal degree in co-relation 86708. Up to 9657 conditions per place. [2024-06-27 18:12:47,031 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 199 selfloop transitions, 123 changer transitions 0/342 dead transitions. [2024-06-27 18:12:47,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 342 transitions, 4139 flow [2024-06-27 18:12:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-27 18:12:47,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546 [2024-06-27 18:12:47,034 INFO L175 Difference]: Start difference. First operand has 215 places, 269 transitions, 2722 flow. Second operand 10 states and 273 transitions. [2024-06-27 18:12:47,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 342 transitions, 4139 flow [2024-06-27 18:12:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 342 transitions, 3924 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:48,228 INFO L231 Difference]: Finished difference. Result has 218 places, 272 transitions, 2836 flow [2024-06-27 18:12:48,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2836, PETRI_PLACES=218, PETRI_TRANSITIONS=272} [2024-06-27 18:12:48,230 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 162 predicate places. [2024-06-27 18:12:48,231 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 272 transitions, 2836 flow [2024-06-27 18:12:48,231 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 18:12:48,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:48,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:48,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:12:48,231 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 18:12:48,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1338529577, now seen corresponding path program 10 times [2024-06-27 18:12:48,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:48,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213519503] [2024-06-27 18:12:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:48,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:49,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213519503] [2024-06-27 18:12:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213519503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:49,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:49,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:49,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206161275] [2024-06-27 18:12:49,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:49,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:49,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:49,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:49,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:49,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 272 transitions, 2836 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 18:12:49,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:49,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:49,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:51,374 INFO L124 PetriNetUnfolderBase]: 8117/12511 cut-off events. [2024-06-27 18:12:51,375 INFO L125 PetriNetUnfolderBase]: For 903935/903983 co-relation queries the response was YES. [2024-06-27 18:12:51,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86843 conditions, 12511 events. 8117/12511 cut-off events. For 903935/903983 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 80346 event pairs, 1809 based on Foata normal form. 5/12282 useless extension candidates. Maximal degree in co-relation 86747. Up to 9649 conditions per place. [2024-06-27 18:12:51,527 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 190 selfloop transitions, 129 changer transitions 0/339 dead transitions. [2024-06-27 18:12:51,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 339 transitions, 3934 flow [2024-06-27 18:12:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-27 18:12:51,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534 [2024-06-27 18:12:51,528 INFO L175 Difference]: Start difference. First operand has 218 places, 272 transitions, 2836 flow. Second operand 10 states and 267 transitions. [2024-06-27 18:12:51,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 339 transitions, 3934 flow [2024-06-27 18:12:52,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 339 transitions, 3628 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:52,360 INFO L231 Difference]: Finished difference. Result has 221 places, 272 transitions, 2796 flow [2024-06-27 18:12:52,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2796, PETRI_PLACES=221, PETRI_TRANSITIONS=272} [2024-06-27 18:12:52,361 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 165 predicate places. [2024-06-27 18:12:52,361 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 272 transitions, 2796 flow [2024-06-27 18:12:52,361 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 18:12:52,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:52,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:52,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:12:52,361 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:12:52,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash -413315496, now seen corresponding path program 1 times [2024-06-27 18:12:52,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396570183] [2024-06-27 18:12:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:53,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:53,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396570183] [2024-06-27 18:12:53,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396570183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:53,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:53,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:53,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878328466] [2024-06-27 18:12:53,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:53,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:53,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:53,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:53,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:53,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:53,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 272 transitions, 2796 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 18:12:53,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:53,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:53,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:55,563 INFO L124 PetriNetUnfolderBase]: 8410/12879 cut-off events. [2024-06-27 18:12:55,563 INFO L125 PetriNetUnfolderBase]: For 978020/978088 co-relation queries the response was YES. [2024-06-27 18:12:55,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89811 conditions, 12879 events. 8410/12879 cut-off events. For 978020/978088 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 81681 event pairs, 2156 based on Foata normal form. 17/12582 useless extension candidates. Maximal degree in co-relation 89714. Up to 11304 conditions per place. [2024-06-27 18:12:55,730 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 263 selfloop transitions, 40 changer transitions 0/333 dead transitions. [2024-06-27 18:12:55,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 333 transitions, 3674 flow [2024-06-27 18:12:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:12:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:12:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 18:12:55,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-06-27 18:12:55,732 INFO L175 Difference]: Start difference. First operand has 221 places, 272 transitions, 2796 flow. Second operand 9 states and 231 transitions. [2024-06-27 18:12:55,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 333 transitions, 3674 flow [2024-06-27 18:12:56,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 333 transitions, 3361 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:12:56,833 INFO L231 Difference]: Finished difference. Result has 220 places, 277 transitions, 2668 flow [2024-06-27 18:12:56,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2668, PETRI_PLACES=220, PETRI_TRANSITIONS=277} [2024-06-27 18:12:56,834 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 164 predicate places. [2024-06-27 18:12:56,834 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 277 transitions, 2668 flow [2024-06-27 18:12:56,834 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 18:12:56,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:56,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:56,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:12:56,834 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 18:12:56,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:56,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709133, now seen corresponding path program 2 times [2024-06-27 18:12:56,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:56,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128423777] [2024-06-27 18:12:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:56,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128423777] [2024-06-27 18:12:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128423777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:57,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:12:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014119529] [2024-06-27 18:12:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:57,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:12:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:12:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:12:57,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:12:57,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 277 transitions, 2668 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 18:12:57,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:57,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:12:57,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:59,498 INFO L124 PetriNetUnfolderBase]: 8422/13000 cut-off events. [2024-06-27 18:12:59,498 INFO L125 PetriNetUnfolderBase]: For 947722/947802 co-relation queries the response was YES. [2024-06-27 18:12:59,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87988 conditions, 13000 events. 8422/13000 cut-off events. For 947722/947802 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 82998 event pairs, 2431 based on Foata normal form. 12/12704 useless extension candidates. Maximal degree in co-relation 87889. Up to 11550 conditions per place. [2024-06-27 18:12:59,666 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 236 selfloop transitions, 28 changer transitions 0/311 dead transitions. [2024-06-27 18:12:59,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 311 transitions, 3462 flow [2024-06-27 18:12:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:12:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:12:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:12:59,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942857142857143 [2024-06-27 18:12:59,667 INFO L175 Difference]: Start difference. First operand has 220 places, 277 transitions, 2668 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:12:59,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 311 transitions, 3462 flow [2024-06-27 18:13:00,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 311 transitions, 3327 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:00,665 INFO L231 Difference]: Finished difference. Result has 221 places, 280 transitions, 2631 flow [2024-06-27 18:13:00,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2631, PETRI_PLACES=221, PETRI_TRANSITIONS=280} [2024-06-27 18:13:00,665 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 165 predicate places. [2024-06-27 18:13:00,666 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 280 transitions, 2631 flow [2024-06-27 18:13:00,666 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 18:13:00,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:00,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:13:00,666 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 18:13:00,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:00,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709598, now seen corresponding path program 1 times [2024-06-27 18:13:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069056837] [2024-06-27 18:13:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:01,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:01,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069056837] [2024-06-27 18:13:01,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069056837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:01,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:01,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:13:01,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910069282] [2024-06-27 18:13:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:01,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:13:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:13:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:13:01,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:13:01,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 280 transitions, 2631 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:01,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:01,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:13:01,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:03,446 INFO L124 PetriNetUnfolderBase]: 8022/12383 cut-off events. [2024-06-27 18:13:03,447 INFO L125 PetriNetUnfolderBase]: For 1001666/1001847 co-relation queries the response was YES. [2024-06-27 18:13:03,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86050 conditions, 12383 events. 8022/12383 cut-off events. For 1001666/1001847 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 78745 event pairs, 2320 based on Foata normal form. 22/11987 useless extension candidates. Maximal degree in co-relation 85950. Up to 10845 conditions per place. [2024-06-27 18:13:03,590 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 238 selfloop transitions, 26 changer transitions 0/325 dead transitions. [2024-06-27 18:13:03,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 325 transitions, 3501 flow [2024-06-27 18:13:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:13:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:13:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:13:03,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-27 18:13:03,591 INFO L175 Difference]: Start difference. First operand has 221 places, 280 transitions, 2631 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:13:03,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 325 transitions, 3501 flow [2024-06-27 18:13:04,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 325 transitions, 3437 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:13:04,643 INFO L231 Difference]: Finished difference. Result has 225 places, 290 transitions, 2752 flow [2024-06-27 18:13:04,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2752, PETRI_PLACES=225, PETRI_TRANSITIONS=290} [2024-06-27 18:13:04,643 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 169 predicate places. [2024-06-27 18:13:04,644 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 290 transitions, 2752 flow [2024-06-27 18:13:04,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:04,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:04,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:04,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:13:04,644 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:04,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2112234395, now seen corresponding path program 11 times [2024-06-27 18:13:04,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:04,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320729736] [2024-06-27 18:13:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:04,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:05,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320729736] [2024-06-27 18:13:05,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320729736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:05,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:05,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267637360] [2024-06-27 18:13:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:05,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:05,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:05,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 290 transitions, 2752 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 18:13:05,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:05,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:05,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:08,098 INFO L124 PetriNetUnfolderBase]: 8354/12930 cut-off events. [2024-06-27 18:13:08,099 INFO L125 PetriNetUnfolderBase]: For 1019986/1020034 co-relation queries the response was YES. [2024-06-27 18:13:08,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91458 conditions, 12930 events. 8354/12930 cut-off events. For 1019986/1020034 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 84126 event pairs, 2401 based on Foata normal form. 6/12693 useless extension candidates. Maximal degree in co-relation 91356. Up to 11374 conditions per place. [2024-06-27 18:13:08,239 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 296 selfloop transitions, 32 changer transitions 0/350 dead transitions. [2024-06-27 18:13:08,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 350 transitions, 3666 flow [2024-06-27 18:13:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 18:13:08,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492 [2024-06-27 18:13:08,240 INFO L175 Difference]: Start difference. First operand has 225 places, 290 transitions, 2752 flow. Second operand 10 states and 246 transitions. [2024-06-27 18:13:08,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 350 transitions, 3666 flow [2024-06-27 18:13:09,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 350 transitions, 3624 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 18:13:09,541 INFO L231 Difference]: Finished difference. Result has 233 places, 293 transitions, 2860 flow [2024-06-27 18:13:09,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2860, PETRI_PLACES=233, PETRI_TRANSITIONS=293} [2024-06-27 18:13:09,549 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 177 predicate places. [2024-06-27 18:13:09,549 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 293 transitions, 2860 flow [2024-06-27 18:13:09,549 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 18:13:09,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:09,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:13:09,550 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:09,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1047303390, now seen corresponding path program 2 times [2024-06-27 18:13:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:09,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88044575] [2024-06-27 18:13:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:10,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:10,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88044575] [2024-06-27 18:13:10,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88044575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:10,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:10,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:10,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202426263] [2024-06-27 18:13:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:10,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:11,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:11,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 293 transitions, 2860 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 18:13:11,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:11,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:11,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:13,480 INFO L124 PetriNetUnfolderBase]: 8623/13296 cut-off events. [2024-06-27 18:13:13,481 INFO L125 PetriNetUnfolderBase]: For 1098170/1098252 co-relation queries the response was YES. [2024-06-27 18:13:13,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95050 conditions, 13296 events. 8623/13296 cut-off events. For 1098170/1098252 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 85343 event pairs, 2633 based on Foata normal form. 16/12979 useless extension candidates. Maximal degree in co-relation 94945. Up to 11760 conditions per place. [2024-06-27 18:13:13,640 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 286 selfloop transitions, 28 changer transitions 0/346 dead transitions. [2024-06-27 18:13:13,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 346 transitions, 3739 flow [2024-06-27 18:13:13,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:13:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:13:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:13:13,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-27 18:13:13,642 INFO L175 Difference]: Start difference. First operand has 233 places, 293 transitions, 2860 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:13:13,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 346 transitions, 3739 flow [2024-06-27 18:13:15,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 346 transitions, 3627 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:15,306 INFO L231 Difference]: Finished difference. Result has 235 places, 298 transitions, 2926 flow [2024-06-27 18:13:15,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2926, PETRI_PLACES=235, PETRI_TRANSITIONS=298} [2024-06-27 18:13:15,307 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 179 predicate places. [2024-06-27 18:13:15,307 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 298 transitions, 2926 flow [2024-06-27 18:13:15,307 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 18:13:15,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:15,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:15,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:13:15,308 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:15,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1841050994, now seen corresponding path program 3 times [2024-06-27 18:13:15,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:15,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616914995] [2024-06-27 18:13:15,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:15,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616914995] [2024-06-27 18:13:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616914995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:16,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:16,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797544238] [2024-06-27 18:13:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:16,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:16,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:16,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 298 transitions, 2926 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 18:13:16,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:16,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:16,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:19,055 INFO L124 PetriNetUnfolderBase]: 8660/13367 cut-off events. [2024-06-27 18:13:19,055 INFO L125 PetriNetUnfolderBase]: For 1134598/1134680 co-relation queries the response was YES. [2024-06-27 18:13:19,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96742 conditions, 13367 events. 8660/13367 cut-off events. For 1134598/1134680 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 85901 event pairs, 2665 based on Foata normal form. 16/13046 useless extension candidates. Maximal degree in co-relation 96635. Up to 11864 conditions per place. [2024-06-27 18:13:19,234 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 290 selfloop transitions, 23 changer transitions 0/345 dead transitions. [2024-06-27 18:13:19,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 345 transitions, 3754 flow [2024-06-27 18:13:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:13:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:13:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 18:13:19,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48444444444444446 [2024-06-27 18:13:19,235 INFO L175 Difference]: Start difference. First operand has 235 places, 298 transitions, 2926 flow. Second operand 9 states and 218 transitions. [2024-06-27 18:13:19,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 345 transitions, 3754 flow [2024-06-27 18:13:20,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 345 transitions, 3629 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:20,797 INFO L231 Difference]: Finished difference. Result has 238 places, 300 transitions, 2930 flow [2024-06-27 18:13:20,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2930, PETRI_PLACES=238, PETRI_TRANSITIONS=300} [2024-06-27 18:13:20,797 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 182 predicate places. [2024-06-27 18:13:20,798 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 300 transitions, 2930 flow [2024-06-27 18:13:20,798 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 18:13:20,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:20,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:20,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:13:20,798 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:20,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1828700594, now seen corresponding path program 4 times [2024-06-27 18:13:20,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:20,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820526615] [2024-06-27 18:13:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:20,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:21,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:21,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820526615] [2024-06-27 18:13:21,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820526615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:21,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:21,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:21,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535502576] [2024-06-27 18:13:21,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:21,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:21,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:22,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:22,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 300 transitions, 2930 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 18:13:22,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:22,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:22,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:24,423 INFO L124 PetriNetUnfolderBase]: 8721/13521 cut-off events. [2024-06-27 18:13:24,423 INFO L125 PetriNetUnfolderBase]: For 1173260/1173362 co-relation queries the response was YES. [2024-06-27 18:13:24,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98124 conditions, 13521 events. 8721/13521 cut-off events. For 1173260/1173362 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 87728 event pairs, 2610 based on Foata normal form. 16/13172 useless extension candidates. Maximal degree in co-relation 98016. Up to 11915 conditions per place. [2024-06-27 18:13:24,586 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 289 selfloop transitions, 33 changer transitions 0/354 dead transitions. [2024-06-27 18:13:24,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 354 transitions, 3798 flow [2024-06-27 18:13:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:13:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:13:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:13:24,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-27 18:13:24,587 INFO L175 Difference]: Start difference. First operand has 238 places, 300 transitions, 2930 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:13:24,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 354 transitions, 3798 flow [2024-06-27 18:13:25,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 354 transitions, 3688 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:25,814 INFO L231 Difference]: Finished difference. Result has 242 places, 305 transitions, 3006 flow [2024-06-27 18:13:25,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3006, PETRI_PLACES=242, PETRI_TRANSITIONS=305} [2024-06-27 18:13:25,815 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 186 predicate places. [2024-06-27 18:13:25,820 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 305 transitions, 3006 flow [2024-06-27 18:13:25,821 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 18:13:25,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:25,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:25,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:13:25,821 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:25,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:25,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1005475534, now seen corresponding path program 5 times [2024-06-27 18:13:25,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:25,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377109130] [2024-06-27 18:13:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:25,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377109130] [2024-06-27 18:13:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377109130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803703208] [2024-06-27 18:13:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:27,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:27,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:27,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 305 transitions, 3006 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 18:13:27,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:27,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:27,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:29,644 INFO L124 PetriNetUnfolderBase]: 8750/13524 cut-off events. [2024-06-27 18:13:29,644 INFO L125 PetriNetUnfolderBase]: For 1212015/1212112 co-relation queries the response was YES. [2024-06-27 18:13:29,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99666 conditions, 13524 events. 8750/13524 cut-off events. For 1212015/1212112 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 87293 event pairs, 2611 based on Foata normal form. 16/13205 useless extension candidates. Maximal degree in co-relation 99556. Up to 11883 conditions per place. [2024-06-27 18:13:29,818 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 293 selfloop transitions, 35 changer transitions 0/360 dead transitions. [2024-06-27 18:13:29,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 360 transitions, 3943 flow [2024-06-27 18:13:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:13:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:13:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:13:29,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:13:29,820 INFO L175 Difference]: Start difference. First operand has 242 places, 305 transitions, 3006 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:13:29,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 360 transitions, 3943 flow [2024-06-27 18:13:31,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 360 transitions, 3801 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:31,909 INFO L231 Difference]: Finished difference. Result has 246 places, 310 transitions, 3058 flow [2024-06-27 18:13:31,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3058, PETRI_PLACES=246, PETRI_TRANSITIONS=310} [2024-06-27 18:13:31,910 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 190 predicate places. [2024-06-27 18:13:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 310 transitions, 3058 flow [2024-06-27 18:13:31,910 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 18:13:31,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:31,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:31,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:13:31,911 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:13:31,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1829115715, now seen corresponding path program 1 times [2024-06-27 18:13:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562685511] [2024-06-27 18:13:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:33,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562685511] [2024-06-27 18:13:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562685511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:33,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:33,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:33,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067249784] [2024-06-27 18:13:33,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:33,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:33,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:33,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:13:33,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 310 transitions, 3058 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 18:13:33,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:33,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:13:33,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:36,485 INFO L124 PetriNetUnfolderBase]: 9255/14282 cut-off events. [2024-06-27 18:13:36,485 INFO L125 PetriNetUnfolderBase]: For 1198328/1198372 co-relation queries the response was YES. [2024-06-27 18:13:36,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103585 conditions, 14282 events. 9255/14282 cut-off events. For 1198328/1198372 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 92025 event pairs, 2758 based on Foata normal form. 2/13997 useless extension candidates. Maximal degree in co-relation 103473. Up to 12753 conditions per place. [2024-06-27 18:13:36,648 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 308 selfloop transitions, 43 changer transitions 0/369 dead transitions. [2024-06-27 18:13:36,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 369 transitions, 4124 flow [2024-06-27 18:13:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:13:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:13:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:13:36,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-06-27 18:13:36,650 INFO L175 Difference]: Start difference. First operand has 246 places, 310 transitions, 3058 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:13:36,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 369 transitions, 4124 flow [2024-06-27 18:13:38,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 369 transitions, 3977 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:38,274 INFO L231 Difference]: Finished difference. Result has 250 places, 319 transitions, 3252 flow [2024-06-27 18:13:38,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2911, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3252, PETRI_PLACES=250, PETRI_TRANSITIONS=319} [2024-06-27 18:13:38,274 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 194 predicate places. [2024-06-27 18:13:38,275 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 319 transitions, 3252 flow [2024-06-27 18:13:38,275 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 18:13:38,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:38,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:13:38,275 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 18:13:38,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1829115374, now seen corresponding path program 6 times [2024-06-27 18:13:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:38,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516166915] [2024-06-27 18:13:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:39,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516166915] [2024-06-27 18:13:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516166915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:39,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741412073] [2024-06-27 18:13:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:39,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:39,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:39,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:39,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 319 transitions, 3252 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 18:13:39,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:39,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:39,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:42,891 INFO L124 PetriNetUnfolderBase]: 8756/13575 cut-off events. [2024-06-27 18:13:42,891 INFO L125 PetriNetUnfolderBase]: For 1245507/1245638 co-relation queries the response was YES. [2024-06-27 18:13:42,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101251 conditions, 13575 events. 8756/13575 cut-off events. For 1245507/1245638 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 88083 event pairs, 2610 based on Foata normal form. 24/13262 useless extension candidates. Maximal degree in co-relation 101137. Up to 11921 conditions per place. [2024-06-27 18:13:43,049 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 296 selfloop transitions, 41 changer transitions 0/371 dead transitions. [2024-06-27 18:13:43,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 371 transitions, 4160 flow [2024-06-27 18:13:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:13:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:13:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:13:43,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955555555555556 [2024-06-27 18:13:43,051 INFO L175 Difference]: Start difference. First operand has 250 places, 319 transitions, 3252 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:13:43,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 371 transitions, 4160 flow [2024-06-27 18:13:44,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 371 transitions, 3989 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 18:13:44,677 INFO L231 Difference]: Finished difference. Result has 254 places, 321 transitions, 3266 flow [2024-06-27 18:13:44,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3266, PETRI_PLACES=254, PETRI_TRANSITIONS=321} [2024-06-27 18:13:44,678 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 198 predicate places. [2024-06-27 18:13:44,678 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 321 transitions, 3266 flow [2024-06-27 18:13:44,678 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 18:13:44,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:44,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:44,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:13:44,678 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 18:13:44,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1005198487, now seen corresponding path program 12 times [2024-06-27 18:13:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726857419] [2024-06-27 18:13:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:45,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726857419] [2024-06-27 18:13:45,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726857419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:45,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:45,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72539532] [2024-06-27 18:13:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:45,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:45,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 321 transitions, 3266 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 18:13:45,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:45,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:45,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:49,015 INFO L124 PetriNetUnfolderBase]: 8574/13277 cut-off events. [2024-06-27 18:13:49,015 INFO L125 PetriNetUnfolderBase]: For 1231472/1231516 co-relation queries the response was YES. [2024-06-27 18:13:49,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99661 conditions, 13277 events. 8574/13277 cut-off events. For 1231472/1231516 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 86610 event pairs, 2377 based on Foata normal form. 4/13046 useless extension candidates. Maximal degree in co-relation 99545. Up to 11229 conditions per place. [2024-06-27 18:13:49,244 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 300 selfloop transitions, 62 changer transitions 0/386 dead transitions. [2024-06-27 18:13:49,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 386 transitions, 4566 flow [2024-06-27 18:13:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 18:13:49,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-06-27 18:13:49,246 INFO L175 Difference]: Start difference. First operand has 254 places, 321 transitions, 3266 flow. Second operand 10 states and 258 transitions. [2024-06-27 18:13:49,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 386 transitions, 4566 flow [2024-06-27 18:13:51,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 386 transitions, 4399 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:13:51,607 INFO L231 Difference]: Finished difference. Result has 257 places, 324 transitions, 3313 flow [2024-06-27 18:13:51,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3103, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3313, PETRI_PLACES=257, PETRI_TRANSITIONS=324} [2024-06-27 18:13:51,609 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 201 predicate places. [2024-06-27 18:13:51,609 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 324 transitions, 3313 flow [2024-06-27 18:13:51,609 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 18:13:51,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:51,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:51,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:13:51,609 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 18:13:51,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash 998048647, now seen corresponding path program 13 times [2024-06-27 18:13:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:51,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741601863] [2024-06-27 18:13:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:51,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:52,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:52,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741601863] [2024-06-27 18:13:52,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741601863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:52,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:52,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:52,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997614604] [2024-06-27 18:13:52,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:52,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:52,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:52,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:52,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:52,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:52,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 324 transitions, 3313 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 18:13:52,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:52,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:52,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:56,276 INFO L124 PetriNetUnfolderBase]: 8623/13374 cut-off events. [2024-06-27 18:13:56,277 INFO L125 PetriNetUnfolderBase]: For 1224183/1224227 co-relation queries the response was YES. [2024-06-27 18:13:56,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99684 conditions, 13374 events. 8623/13374 cut-off events. For 1224183/1224227 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 87579 event pairs, 2343 based on Foata normal form. 4/13133 useless extension candidates. Maximal degree in co-relation 99567. Up to 11271 conditions per place. [2024-06-27 18:13:56,449 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 297 selfloop transitions, 68 changer transitions 0/389 dead transitions. [2024-06-27 18:13:56,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 389 transitions, 4625 flow [2024-06-27 18:13:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:56,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:56,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 18:13:56,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514 [2024-06-27 18:13:56,451 INFO L175 Difference]: Start difference. First operand has 257 places, 324 transitions, 3313 flow. Second operand 10 states and 257 transitions. [2024-06-27 18:13:56,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 389 transitions, 4625 flow [2024-06-27 18:13:58,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 389 transitions, 4346 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 18:13:58,371 INFO L231 Difference]: Finished difference. Result has 258 places, 327 transitions, 3262 flow [2024-06-27 18:13:58,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3262, PETRI_PLACES=258, PETRI_TRANSITIONS=327} [2024-06-27 18:13:58,371 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 202 predicate places. [2024-06-27 18:13:58,372 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 327 transitions, 3262 flow [2024-06-27 18:13:58,372 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 18:13:58,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:58,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:58,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:13:58,372 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 18:13:58,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash 997841257, now seen corresponding path program 14 times [2024-06-27 18:13:58,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:58,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691378402] [2024-06-27 18:13:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:58,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:59,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:59,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691378402] [2024-06-27 18:13:59,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691378402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:59,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:59,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:59,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800360256] [2024-06-27 18:13:59,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:59,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:59,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:59,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:59,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:13:59,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 327 transitions, 3262 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 18:13:59,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:59,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:13:59,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:02,521 INFO L124 PetriNetUnfolderBase]: 8661/13371 cut-off events. [2024-06-27 18:14:02,522 INFO L125 PetriNetUnfolderBase]: For 1245263/1245307 co-relation queries the response was YES. [2024-06-27 18:14:02,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100111 conditions, 13371 events. 8661/13371 cut-off events. For 1245263/1245307 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 86950 event pairs, 2309 based on Foata normal form. 4/13149 useless extension candidates. Maximal degree in co-relation 99993. Up to 11305 conditions per place. [2024-06-27 18:14:02,741 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 291 selfloop transitions, 77 changer transitions 0/392 dead transitions. [2024-06-27 18:14:02,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 392 transitions, 4575 flow [2024-06-27 18:14:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:14:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:14:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:14:02,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-27 18:14:02,743 INFO L175 Difference]: Start difference. First operand has 258 places, 327 transitions, 3262 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:14:02,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 392 transitions, 4575 flow [2024-06-27 18:14:04,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 392 transitions, 4223 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 18:14:04,854 INFO L231 Difference]: Finished difference. Result has 258 places, 330 transitions, 3147 flow [2024-06-27 18:14:04,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3147, PETRI_PLACES=258, PETRI_TRANSITIONS=330} [2024-06-27 18:14:04,854 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 202 predicate places. [2024-06-27 18:14:04,855 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 330 transitions, 3147 flow [2024-06-27 18:14:04,855 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 18:14:04,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:04,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:04,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:14:04,855 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 18:14:04,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash -67366950, now seen corresponding path program 5 times [2024-06-27 18:14:04,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:04,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065356602] [2024-06-27 18:14:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:04,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:06,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:06,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065356602] [2024-06-27 18:14:06,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065356602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:06,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:06,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:14:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308251776] [2024-06-27 18:14:06,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:06,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:14:06,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:14:06,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:14:06,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:14:06,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 330 transitions, 3147 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 18:14:06,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:06,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:14:06,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:09,274 INFO L124 PetriNetUnfolderBase]: 8681/13497 cut-off events. [2024-06-27 18:14:09,274 INFO L125 PetriNetUnfolderBase]: For 1256299/1256343 co-relation queries the response was YES. [2024-06-27 18:14:09,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100185 conditions, 13497 events. 8681/13497 cut-off events. For 1256299/1256343 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 88881 event pairs, 2442 based on Foata normal form. 2/13246 useless extension candidates. Maximal degree in co-relation 100066. Up to 12044 conditions per place. [2024-06-27 18:14:09,468 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 339 selfloop transitions, 25 changer transitions 0/388 dead transitions. [2024-06-27 18:14:09,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 388 transitions, 4169 flow [2024-06-27 18:14:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:14:09,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:14:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-27 18:14:09,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.486 [2024-06-27 18:14:09,470 INFO L175 Difference]: Start difference. First operand has 258 places, 330 transitions, 3147 flow. Second operand 10 states and 243 transitions. [2024-06-27 18:14:09,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 388 transitions, 4169 flow [2024-06-27 18:14:11,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 388 transitions, 3908 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:11,608 INFO L231 Difference]: Finished difference. Result has 260 places, 333 transitions, 3048 flow [2024-06-27 18:14:11,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3048, PETRI_PLACES=260, PETRI_TRANSITIONS=333} [2024-06-27 18:14:11,609 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 204 predicate places. [2024-06-27 18:14:11,609 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 333 transitions, 3048 flow [2024-06-27 18:14:11,609 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 18:14:11,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:11,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:11,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:14:11,609 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 18:14:11,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash 997846837, now seen corresponding path program 15 times [2024-06-27 18:14:11,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:11,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673697975] [2024-06-27 18:14:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673697975] [2024-06-27 18:14:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673697975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:12,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:12,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:14:12,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491469692] [2024-06-27 18:14:12,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:14:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:14:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:14:12,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:14:12,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 333 transitions, 3048 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 18:14:12,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:12,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:14:12,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:15,291 INFO L124 PetriNetUnfolderBase]: 8651/13357 cut-off events. [2024-06-27 18:14:15,292 INFO L125 PetriNetUnfolderBase]: For 1283652/1283696 co-relation queries the response was YES. [2024-06-27 18:14:15,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99827 conditions, 13357 events. 8651/13357 cut-off events. For 1283652/1283696 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 86860 event pairs, 2310 based on Foata normal form. 4/13135 useless extension candidates. Maximal degree in co-relation 99707. Up to 11297 conditions per place. [2024-06-27 18:14:15,455 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 295 selfloop transitions, 74 changer transitions 0/393 dead transitions. [2024-06-27 18:14:15,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 393 transitions, 4002 flow [2024-06-27 18:14:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:14:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:14:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:14:15,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508 [2024-06-27 18:14:15,456 INFO L175 Difference]: Start difference. First operand has 260 places, 333 transitions, 3048 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:14:15,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 393 transitions, 4002 flow [2024-06-27 18:14:17,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 393 transitions, 3820 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:17,442 INFO L231 Difference]: Finished difference. Result has 262 places, 333 transitions, 3022 flow [2024-06-27 18:14:17,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2866, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3022, PETRI_PLACES=262, PETRI_TRANSITIONS=333} [2024-06-27 18:14:17,443 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 206 predicate places. [2024-06-27 18:14:17,443 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 333 transitions, 3022 flow [2024-06-27 18:14:17,443 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 18:14:17,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:17,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:17,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:14:17,444 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:14:17,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1023552028, now seen corresponding path program 2 times [2024-06-27 18:14:17,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:17,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136843764] [2024-06-27 18:14:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:17,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136843764] [2024-06-27 18:14:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136843764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:18,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:18,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:14:18,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737179367] [2024-06-27 18:14:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:18,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:14:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:18,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:14:18,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:14:18,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:14:18,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 333 transitions, 3022 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:18,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:18,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:14:18,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand