./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix033_tso.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/mix033_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix033_tso.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 18:28:08,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:28:08,621 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:28:08,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:28:08,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:28:08,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:28:08,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:28:08,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:28:08,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:28:08,658 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:28:08,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:28:08,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:28:08,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:28:08,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:28:08,661 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:28:08,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:28:08,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:28:08,661 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:28:08,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:28:08,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:28:08,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:28:08,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:28:08,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:28:08,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:28:08,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:28:08,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:28:08,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:28:08,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:28:08,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:28:08,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:28:08,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:28:08,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:28:08,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:28:08,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:28:08,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:28:08,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:28:08,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:28:08,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:28:08,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:28:08,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:28:08,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:28:08,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:28:08,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:28:08,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:28:08,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:28:08,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:28:08,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:28:08,900 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:28:08,901 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:28:08,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix033_tso.oepc.yml/witness.yml [2024-06-27 18:28:09,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:28:09,202 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:28:09,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-27 18:28:10,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:28:10,397 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:28:10,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-27 18:28:10,418 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86f12b60/1c66f86d77a24ccfbb0b60c2f90e0fe9/FLAG7dc40a886 [2024-06-27 18:28:10,430 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86f12b60/1c66f86d77a24ccfbb0b60c2f90e0fe9 [2024-06-27 18:28:10,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:28:10,432 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:28:10,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:28:10,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:28:10,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:28:10,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:09" (1/2) ... [2024-06-27 18:28:10,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1993c52a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:10, skipping insertion in model container [2024-06-27 18:28:10,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:09" (1/2) ... [2024-06-27 18:28:10,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@294c20b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:10, skipping insertion in model container [2024-06-27 18:28:10,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:28:10" (2/2) ... [2024-06-27 18:28:10,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1993c52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:10, skipping insertion in model container [2024-06-27 18:28:10,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:28:10" (2/2) ... [2024-06-27 18:28:10,440 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:28:10,534 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:28:10,535 INFO L97 edCorrectnessWitness]: Location invariant before [L845-L845] (((((((((((((((((((((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:28:10,535 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] (((((((((((((((((((((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:28:10,536 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:28:10,536 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:28:10,536 INFO L106 edCorrectnessWitness]: ghost_update [L841-L841] multithreaded = 1; [2024-06-27 18:28:10,574 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:28:10,730 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/mix033_tso.oepc.i[949,962] [2024-06-27 18:28:10,901 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:28:10,914 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:28:10,950 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/mix033_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:28:11,064 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:28:11,097 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:28:11,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11 WrapperNode [2024-06-27 18:28:11,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:28:11,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:28:11,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:28:11,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:28:11,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,163 INFO L138 Inliner]: procedures = 175, calls = 50, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-06-27 18:28:11,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:28:11,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:28:11,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:28:11,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:28:11,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,176 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,188 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 18:28:11,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:28:11,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:28:11,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:28:11,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:28:11,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (1/1) ... [2024-06-27 18:28:11,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:28:11,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:28:11,240 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 18:28:11,247 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 18:28:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:28:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:28:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:28:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:28:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:28:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:28:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:28:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:28:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:28:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:28:11,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:28:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:28:11,271 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 18:28:11,364 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:28:11,366 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:28:11,682 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:28:11,682 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:28:11,809 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:28:11,809 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:28:11,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:28:11 BoogieIcfgContainer [2024-06-27 18:28:11,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:28:11,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:28:11,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:28:11,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:28:11,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:09" (1/4) ... [2024-06-27 18:28:11,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb1d651 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:28:11, skipping insertion in model container [2024-06-27 18:28:11,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:28:10" (2/4) ... [2024-06-27 18:28:11,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb1d651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:28:11, skipping insertion in model container [2024-06-27 18:28:11,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:11" (3/4) ... [2024-06-27 18:28:11,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb1d651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:28:11, skipping insertion in model container [2024-06-27 18:28:11,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:28:11" (4/4) ... [2024-06-27 18:28:11,818 INFO L112 eAbstractionObserver]: Analyzing ICFG mix033_tso.oepc.i [2024-06-27 18:28:11,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:28:11,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:28:11,831 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:28:11,871 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:28:11,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-06-27 18:28:11,988 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-27 18:28:11,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:28:11,993 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 85 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 18:28:11,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-06-27 18:28:11,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-06-27 18:28:12,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:28:12,025 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;@455a7749, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:28:12,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:28:12,028 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:28:12,030 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:28:12,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:28:12,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:12,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:28:12,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:12,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash 349948840, now seen corresponding path program 1 times [2024-06-27 18:28:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:12,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949338767] [2024-06-27 18:28:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949338767] [2024-06-27 18:28:13,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949338767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:13,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:13,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:28:13,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712077818] [2024-06-27 18:28:13,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:13,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:28:13,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:28:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:28:13,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 18:28:13,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:13,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:13,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 18:28:13,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:14,113 INFO L124 PetriNetUnfolderBase]: 5133/8341 cut-off events. [2024-06-27 18:28:14,114 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-27 18:28:14,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15783 conditions, 8341 events. 5133/8341 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 55543 event pairs, 4292 based on Foata normal form. 253/7857 useless extension candidates. Maximal degree in co-relation 15771. Up to 7326 conditions per place. [2024-06-27 18:28:14,152 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 44 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-06-27 18:28:14,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 237 flow [2024-06-27 18:28:14,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:28:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:28:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 18:28:14,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-06-27 18:28:14,163 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 102 transitions. [2024-06-27 18:28:14,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 237 flow [2024-06-27 18:28:14,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:14,168 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 135 flow [2024-06-27 18:28:14,169 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 18:28:14,171 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-27 18:28:14,172 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 135 flow [2024-06-27 18:28:14,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:14,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:14,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:28:14,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:14,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:14,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1293438023, now seen corresponding path program 1 times [2024-06-27 18:28:14,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:14,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243963818] [2024-06-27 18:28:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:14,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243963818] [2024-06-27 18:28:14,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243963818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:14,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:14,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:28:14,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527387816] [2024-06-27 18:28:14,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:14,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:28:14,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:28:14,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:28:14,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 18:28:14,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:14,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 18:28:14,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:15,733 INFO L124 PetriNetUnfolderBase]: 5987/8984 cut-off events. [2024-06-27 18:28:15,733 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2024-06-27 18:28:15,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19456 conditions, 8984 events. 5987/8984 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 55284 event pairs, 3308 based on Foata normal form. 3/8495 useless extension candidates. Maximal degree in co-relation 19444. Up to 8488 conditions per place. [2024-06-27 18:28:15,782 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 57 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-27 18:28:15,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 337 flow [2024-06-27 18:28:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:28:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:28:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 18:28:15,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-06-27 18:28:15,787 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 135 flow. Second operand 4 states and 129 transitions. [2024-06-27 18:28:15,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 337 flow [2024-06-27 18:28:15,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:15,790 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 181 flow [2024-06-27 18:28:15,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-27 18:28:15,791 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-06-27 18:28:15,791 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 181 flow [2024-06-27 18:28:15,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:15,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:15,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:15,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:28:15,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:15,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1441874731, now seen corresponding path program 1 times [2024-06-27 18:28:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:15,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51594861] [2024-06-27 18:28:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51594861] [2024-06-27 18:28:16,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51594861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:16,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:16,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:28:16,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885116675] [2024-06-27 18:28:16,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:16,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:28:16,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:16,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:28:16,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:28:16,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 18:28:16,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:16,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:16,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 18:28:16,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:17,548 INFO L124 PetriNetUnfolderBase]: 5971/9470 cut-off events. [2024-06-27 18:28:17,549 INFO L125 PetriNetUnfolderBase]: For 3285/3285 co-relation queries the response was YES. [2024-06-27 18:28:17,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21706 conditions, 9470 events. 5971/9470 cut-off events. For 3285/3285 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62594 event pairs, 2884 based on Foata normal form. 6/8797 useless extension candidates. Maximal degree in co-relation 21692. Up to 8437 conditions per place. [2024-06-27 18:28:17,599 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 69 selfloop transitions, 16 changer transitions 0/97 dead transitions. [2024-06-27 18:28:17,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 496 flow [2024-06-27 18:28:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:28:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:28:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-27 18:28:17,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-27 18:28:17,602 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 181 flow. Second operand 5 states and 155 transitions. [2024-06-27 18:28:17,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 496 flow [2024-06-27 18:28:17,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 460 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:17,605 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 304 flow [2024-06-27 18:28:17,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2024-06-27 18:28:17,606 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-27 18:28:17,606 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 304 flow [2024-06-27 18:28:17,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:17,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:17,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:28:17,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:17,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1440675576, now seen corresponding path program 1 times [2024-06-27 18:28:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130591016] [2024-06-27 18:28:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:17,661 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 18:28:17,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:17,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130591016] [2024-06-27 18:28:17,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130591016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:17,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:17,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:28:17,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160182432] [2024-06-27 18:28:17,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:17,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:28:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:17,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:28:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:28:17,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-06-27 18:28:17,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:17,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-06-27 18:28:17,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:17,915 INFO L124 PetriNetUnfolderBase]: 1239/2572 cut-off events. [2024-06-27 18:28:17,915 INFO L125 PetriNetUnfolderBase]: For 1304/1456 co-relation queries the response was YES. [2024-06-27 18:28:17,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 2572 events. 1239/2572 cut-off events. For 1304/1456 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 19505 event pairs, 618 based on Foata normal form. 21/2401 useless extension candidates. Maximal degree in co-relation 5482. Up to 1578 conditions per place. [2024-06-27 18:28:17,928 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 35 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-06-27 18:28:17,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 375 flow [2024-06-27 18:28:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:28:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:28:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 18:28:17,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2024-06-27 18:28:17,930 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 304 flow. Second operand 3 states and 116 transitions. [2024-06-27 18:28:17,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 375 flow [2024-06-27 18:28:17,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 367 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:28:17,932 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 267 flow [2024-06-27 18:28:17,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-06-27 18:28:17,933 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-27 18:28:17,933 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 267 flow [2024-06-27 18:28:17,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:17,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:17,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:28:17,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:17,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:17,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2057146598, now seen corresponding path program 1 times [2024-06-27 18:28:17,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:17,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872190225] [2024-06-27 18:28:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:17,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:18,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:18,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872190225] [2024-06-27 18:28:18,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872190225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:18,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:18,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319503894] [2024-06-27 18:28:18,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:18,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:18,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 18:28:18,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:18,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:18,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 18:28:18,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:19,689 INFO L124 PetriNetUnfolderBase]: 5064/8057 cut-off events. [2024-06-27 18:28:19,689 INFO L125 PetriNetUnfolderBase]: For 7060/7060 co-relation queries the response was YES. [2024-06-27 18:28:19,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19826 conditions, 8057 events. 5064/8057 cut-off events. For 7060/7060 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 51765 event pairs, 2100 based on Foata normal form. 6/7777 useless extension candidates. Maximal degree in co-relation 19807. Up to 7126 conditions per place. [2024-06-27 18:28:19,736 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 71 selfloop transitions, 16 changer transitions 1/100 dead transitions. [2024-06-27 18:28:19,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 541 flow [2024-06-27 18:28:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-27 18:28:19,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 18:28:19,740 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 267 flow. Second operand 6 states and 175 transitions. [2024-06-27 18:28:19,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 541 flow [2024-06-27 18:28:19,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 525 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:19,750 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 309 flow [2024-06-27 18:28:19,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-27 18:28:19,753 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-27 18:28:19,753 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 309 flow [2024-06-27 18:28:19,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:19,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:19,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:19,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:28:19,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:19,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:19,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1509501900, now seen corresponding path program 1 times [2024-06-27 18:28:19,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:19,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019515931] [2024-06-27 18:28:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:19,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:20,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019515931] [2024-06-27 18:28:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019515931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726260836] [2024-06-27 18:28:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:20,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:28:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:28:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:28:20,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 18:28:20,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 309 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 18:28:20,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:20,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 18:28:20,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:21,071 INFO L124 PetriNetUnfolderBase]: 4335/7037 cut-off events. [2024-06-27 18:28:21,071 INFO L125 PetriNetUnfolderBase]: For 7908/7908 co-relation queries the response was YES. [2024-06-27 18:28:21,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18109 conditions, 7037 events. 4335/7037 cut-off events. For 7908/7908 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 44855 event pairs, 2340 based on Foata normal form. 2/6735 useless extension candidates. Maximal degree in co-relation 18088. Up to 6189 conditions per place. [2024-06-27 18:28:21,110 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 69 selfloop transitions, 9 changer transitions 0/89 dead transitions. [2024-06-27 18:28:21,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 559 flow [2024-06-27 18:28:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:28:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:28:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 18:28:21,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-06-27 18:28:21,112 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 309 flow. Second operand 5 states and 129 transitions. [2024-06-27 18:28:21,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 559 flow [2024-06-27 18:28:21,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 511 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:21,116 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 354 flow [2024-06-27 18:28:21,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-27 18:28:21,117 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-27 18:28:21,117 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 354 flow [2024-06-27 18:28:21,117 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 18:28:21,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:21,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:21,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:28:21,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:21,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash -450080357, now seen corresponding path program 1 times [2024-06-27 18:28:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:21,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456718306] [2024-06-27 18:28:21,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:21,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:21,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456718306] [2024-06-27 18:28:21,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456718306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:21,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:21,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:21,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294236935] [2024-06-27 18:28:21,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:21,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:21,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:21,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:21,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:21,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:21,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:21,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:22,808 INFO L124 PetriNetUnfolderBase]: 5114/8334 cut-off events. [2024-06-27 18:28:22,808 INFO L125 PetriNetUnfolderBase]: For 12149/12149 co-relation queries the response was YES. [2024-06-27 18:28:22,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22488 conditions, 8334 events. 5114/8334 cut-off events. For 12149/12149 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 54152 event pairs, 2786 based on Foata normal form. 2/8048 useless extension candidates. Maximal degree in co-relation 22464. Up to 7262 conditions per place. [2024-06-27 18:28:22,847 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 79 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-06-27 18:28:22,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 630 flow [2024-06-27 18:28:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:28:22,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:28:22,848 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 354 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:28:22,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 630 flow [2024-06-27 18:28:22,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 613 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:22,853 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 395 flow [2024-06-27 18:28:22,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=395, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-27 18:28:22,854 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-27 18:28:22,854 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 395 flow [2024-06-27 18:28:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:22,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:22,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:22,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:28:22,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:22,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1073340757, now seen corresponding path program 1 times [2024-06-27 18:28:22,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:22,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360939603] [2024-06-27 18:28:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:22,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:23,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:23,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360939603] [2024-06-27 18:28:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360939603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:23,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10397425] [2024-06-27 18:28:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:23,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:23,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:23,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:23,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:23,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:23,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:24,734 INFO L124 PetriNetUnfolderBase]: 5695/9211 cut-off events. [2024-06-27 18:28:24,735 INFO L125 PetriNetUnfolderBase]: For 18514/18514 co-relation queries the response was YES. [2024-06-27 18:28:24,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26256 conditions, 9211 events. 5695/9211 cut-off events. For 18514/18514 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 60145 event pairs, 2997 based on Foata normal form. 2/8925 useless extension candidates. Maximal degree in co-relation 26230. Up to 8102 conditions per place. [2024-06-27 18:28:24,796 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 84 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2024-06-27 18:28:24,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 108 transitions, 707 flow [2024-06-27 18:28:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 18:28:24,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-06-27 18:28:24,797 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 395 flow. Second operand 6 states and 151 transitions. [2024-06-27 18:28:24,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 108 transitions, 707 flow [2024-06-27 18:28:24,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 108 transitions, 675 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:24,805 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 464 flow [2024-06-27 18:28:24,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-06-27 18:28:24,805 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2024-06-27 18:28:24,806 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 464 flow [2024-06-27 18:28:24,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:24,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:24,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:24,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:28:24,806 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:24,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1067597077, now seen corresponding path program 2 times [2024-06-27 18:28:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:24,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424733853] [2024-06-27 18:28:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:24,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:25,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:25,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424733853] [2024-06-27 18:28:25,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424733853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:25,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:25,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:25,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825298868] [2024-06-27 18:28:25,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:25,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:25,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:25,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:25,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:25,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:25,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:25,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:25,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:25,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:26,523 INFO L124 PetriNetUnfolderBase]: 5667/9147 cut-off events. [2024-06-27 18:28:26,524 INFO L125 PetriNetUnfolderBase]: For 23958/23982 co-relation queries the response was YES. [2024-06-27 18:28:26,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27724 conditions, 9147 events. 5667/9147 cut-off events. For 23958/23982 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 59690 event pairs, 2841 based on Foata normal form. 18/8898 useless extension candidates. Maximal degree in co-relation 27696. Up to 8024 conditions per place. [2024-06-27 18:28:26,612 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 82 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-06-27 18:28:26,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 111 transitions, 770 flow [2024-06-27 18:28:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:26,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 18:28:26,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-27 18:28:26,614 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 464 flow. Second operand 6 states and 152 transitions. [2024-06-27 18:28:26,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 111 transitions, 770 flow [2024-06-27 18:28:26,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 737 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:26,625 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 509 flow [2024-06-27 18:28:26,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=509, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-27 18:28:26,626 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-27 18:28:26,626 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 509 flow [2024-06-27 18:28:26,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:26,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:26,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:28:26,627 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:26,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1067588149, now seen corresponding path program 1 times [2024-06-27 18:28:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:26,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258169846] [2024-06-27 18:28:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:27,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:27,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258169846] [2024-06-27 18:28:27,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258169846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:27,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:27,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:27,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789779177] [2024-06-27 18:28:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:27,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:27,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:27,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 509 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 18:28:27,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:27,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:27,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:28,558 INFO L124 PetriNetUnfolderBase]: 5146/8443 cut-off events. [2024-06-27 18:28:28,558 INFO L125 PetriNetUnfolderBase]: For 26205/26205 co-relation queries the response was YES. [2024-06-27 18:28:28,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26660 conditions, 8443 events. 5146/8443 cut-off events. For 26205/26205 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 55441 event pairs, 2635 based on Foata normal form. 2/8184 useless extension candidates. Maximal degree in co-relation 26631. Up to 7287 conditions per place. [2024-06-27 18:28:28,609 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 98 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-06-27 18:28:28,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 123 transitions, 869 flow [2024-06-27 18:28:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:28:28,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:28:28,611 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 509 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:28:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 123 transitions, 869 flow [2024-06-27 18:28:28,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 123 transitions, 817 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:28,621 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 529 flow [2024-06-27 18:28:28,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-27 18:28:28,622 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-27 18:28:28,622 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 529 flow [2024-06-27 18:28:28,623 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 18:28:28,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:28,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:28,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:28:28,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:28,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1086054783, now seen corresponding path program 1 times [2024-06-27 18:28:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:28,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76046185] [2024-06-27 18:28:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:29,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76046185] [2024-06-27 18:28:29,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76046185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:29,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:29,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:29,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820706375] [2024-06-27 18:28:29,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:29,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:29,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:29,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:29,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:29,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 529 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 18:28:29,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:29,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:29,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:30,498 INFO L124 PetriNetUnfolderBase]: 5738/9302 cut-off events. [2024-06-27 18:28:30,498 INFO L125 PetriNetUnfolderBase]: For 36503/36511 co-relation queries the response was YES. [2024-06-27 18:28:30,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30902 conditions, 9302 events. 5738/9302 cut-off events. For 36503/36511 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 61059 event pairs, 2502 based on Foata normal form. 12/9022 useless extension candidates. Maximal degree in co-relation 30872. Up to 8101 conditions per place. [2024-06-27 18:28:30,537 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 93 selfloop transitions, 29 changer transitions 0/133 dead transitions. [2024-06-27 18:28:30,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 133 transitions, 930 flow [2024-06-27 18:28:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:28:30,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-27 18:28:30,539 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 529 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:28:30,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 133 transitions, 930 flow [2024-06-27 18:28:30,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 884 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:30,557 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 630 flow [2024-06-27 18:28:30,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=630, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-06-27 18:28:30,557 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-27 18:28:30,558 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 630 flow [2024-06-27 18:28:30,558 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 18:28:30,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:30,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:30,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:28:30,558 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:30,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:30,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1086175900, now seen corresponding path program 1 times [2024-06-27 18:28:30,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:30,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438402851] [2024-06-27 18:28:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:30,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:31,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:31,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438402851] [2024-06-27 18:28:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438402851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:31,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:31,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503975905] [2024-06-27 18:28:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:31,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:31,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:31,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 630 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:31,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:31,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:31,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:32,413 INFO L124 PetriNetUnfolderBase]: 6079/9658 cut-off events. [2024-06-27 18:28:32,413 INFO L125 PetriNetUnfolderBase]: For 44273/44273 co-relation queries the response was YES. [2024-06-27 18:28:32,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34383 conditions, 9658 events. 6079/9658 cut-off events. For 44273/44273 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 61536 event pairs, 2680 based on Foata normal form. 2/9390 useless extension candidates. Maximal degree in co-relation 34351. Up to 8583 conditions per place. [2024-06-27 18:28:32,473 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 110 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2024-06-27 18:28:32,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 1024 flow [2024-06-27 18:28:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:28:32,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 18:28:32,475 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 630 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:28:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 1024 flow [2024-06-27 18:28:32,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 135 transitions, 959 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:32,493 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 645 flow [2024-06-27 18:28:32,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=645, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2024-06-27 18:28:32,494 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-27 18:28:32,494 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 645 flow [2024-06-27 18:28:32,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:32,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:32,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:32,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:28:32,494 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:32,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1869554367, now seen corresponding path program 2 times [2024-06-27 18:28:32,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:32,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869156694] [2024-06-27 18:28:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:32,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:33,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869156694] [2024-06-27 18:28:33,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869156694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:33,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:33,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300439514] [2024-06-27 18:28:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:33,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:33,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:33,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 645 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 18:28:33,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:33,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:33,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:34,366 INFO L124 PetriNetUnfolderBase]: 5867/9440 cut-off events. [2024-06-27 18:28:34,366 INFO L125 PetriNetUnfolderBase]: For 53967/54017 co-relation queries the response was YES. [2024-06-27 18:28:34,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35149 conditions, 9440 events. 5867/9440 cut-off events. For 53967/54017 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 61353 event pairs, 2427 based on Foata normal form. 12/9151 useless extension candidates. Maximal degree in co-relation 35116. Up to 8187 conditions per place. [2024-06-27 18:28:34,436 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 100 selfloop transitions, 37 changer transitions 0/149 dead transitions. [2024-06-27 18:28:34,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 149 transitions, 1202 flow [2024-06-27 18:28:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:28:34,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-27 18:28:34,438 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 645 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:28:34,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 149 transitions, 1202 flow [2024-06-27 18:28:34,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 149 transitions, 1145 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:34,459 INFO L231 Difference]: Finished difference. Result has 92 places, 111 transitions, 831 flow [2024-06-27 18:28:34,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=831, PETRI_PLACES=92, PETRI_TRANSITIONS=111} [2024-06-27 18:28:34,460 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-27 18:28:34,460 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 111 transitions, 831 flow [2024-06-27 18:28:34,460 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 18:28:34,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:34,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:34,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:28:34,461 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:34,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:34,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1874224827, now seen corresponding path program 3 times [2024-06-27 18:28:34,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:34,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572593386] [2024-06-27 18:28:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:34,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:35,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:35,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572593386] [2024-06-27 18:28:35,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572593386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:35,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:35,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:35,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150441042] [2024-06-27 18:28:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:35,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:35,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:35,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:35,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:35,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 111 transitions, 831 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 18:28:35,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:35,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:35,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:36,466 INFO L124 PetriNetUnfolderBase]: 5826/9464 cut-off events. [2024-06-27 18:28:36,466 INFO L125 PetriNetUnfolderBase]: For 64756/64804 co-relation queries the response was YES. [2024-06-27 18:28:36,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37097 conditions, 9464 events. 5826/9464 cut-off events. For 64756/64804 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 62288 event pairs, 2289 based on Foata normal form. 17/9187 useless extension candidates. Maximal degree in co-relation 37062. Up to 8077 conditions per place. [2024-06-27 18:28:36,522 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 102 selfloop transitions, 51 changer transitions 0/165 dead transitions. [2024-06-27 18:28:36,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 165 transitions, 1503 flow [2024-06-27 18:28:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:28:36,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-27 18:28:36,524 INFO L175 Difference]: Start difference. First operand has 92 places, 111 transitions, 831 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:28:36,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 165 transitions, 1503 flow [2024-06-27 18:28:36,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 165 transitions, 1411 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:36,550 INFO L231 Difference]: Finished difference. Result has 97 places, 129 transitions, 1117 flow [2024-06-27 18:28:36,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1117, PETRI_PLACES=97, PETRI_TRANSITIONS=129} [2024-06-27 18:28:36,550 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-06-27 18:28:36,550 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 129 transitions, 1117 flow [2024-06-27 18:28:36,551 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 18:28:36,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:36,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:36,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:28:36,551 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:36,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1264229980, now seen corresponding path program 2 times [2024-06-27 18:28:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:36,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470800846] [2024-06-27 18:28:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:37,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:37,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470800846] [2024-06-27 18:28:37,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470800846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:37,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:37,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314144190] [2024-06-27 18:28:37,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:37,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:37,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:37,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:37,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 129 transitions, 1117 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:37,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:37,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:37,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:38,709 INFO L124 PetriNetUnfolderBase]: 6177/9827 cut-off events. [2024-06-27 18:28:38,709 INFO L125 PetriNetUnfolderBase]: For 77502/77529 co-relation queries the response was YES. [2024-06-27 18:28:38,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40948 conditions, 9827 events. 6177/9827 cut-off events. For 77502/77529 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 62928 event pairs, 2547 based on Foata normal form. 20/9571 useless extension candidates. Maximal degree in co-relation 40910. Up to 8624 conditions per place. [2024-06-27 18:28:38,786 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 132 selfloop transitions, 35 changer transitions 0/176 dead transitions. [2024-06-27 18:28:38,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 176 transitions, 1761 flow [2024-06-27 18:28:38,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:28:38,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:28:38,788 INFO L175 Difference]: Start difference. First operand has 97 places, 129 transitions, 1117 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:28:38,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 176 transitions, 1761 flow [2024-06-27 18:28:38,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 176 transitions, 1643 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:38,842 INFO L231 Difference]: Finished difference. Result has 102 places, 135 transitions, 1186 flow [2024-06-27 18:28:38,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1186, PETRI_PLACES=102, PETRI_TRANSITIONS=135} [2024-06-27 18:28:38,842 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-27 18:28:38,842 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 135 transitions, 1186 flow [2024-06-27 18:28:38,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:38,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:38,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:38,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:28:38,843 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:38,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1874232484, now seen corresponding path program 3 times [2024-06-27 18:28:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355796706] [2024-06-27 18:28:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:39,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:39,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355796706] [2024-06-27 18:28:39,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355796706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:39,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:39,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:39,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875346343] [2024-06-27 18:28:39,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:39,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:39,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:39,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:39,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:39,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:39,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 135 transitions, 1186 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:39,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:39,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:39,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:40,896 INFO L124 PetriNetUnfolderBase]: 6172/9817 cut-off events. [2024-06-27 18:28:40,897 INFO L125 PetriNetUnfolderBase]: For 86355/86382 co-relation queries the response was YES. [2024-06-27 18:28:40,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42148 conditions, 9817 events. 6172/9817 cut-off events. For 86355/86382 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 62813 event pairs, 2547 based on Foata normal form. 20/9562 useless extension candidates. Maximal degree in co-relation 42108. Up to 8619 conditions per place. [2024-06-27 18:28:40,984 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 127 selfloop transitions, 37 changer transitions 0/173 dead transitions. [2024-06-27 18:28:40,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 173 transitions, 1656 flow [2024-06-27 18:28:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:28:40,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2024-06-27 18:28:40,985 INFO L175 Difference]: Start difference. First operand has 102 places, 135 transitions, 1186 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:28:40,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 173 transitions, 1656 flow [2024-06-27 18:28:41,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 173 transitions, 1566 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:41,048 INFO L231 Difference]: Finished difference. Result has 106 places, 135 transitions, 1178 flow [2024-06-27 18:28:41,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1178, PETRI_PLACES=106, PETRI_TRANSITIONS=135} [2024-06-27 18:28:41,048 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-27 18:28:41,048 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 135 transitions, 1178 flow [2024-06-27 18:28:41,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:41,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:41,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:41,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:28:41,049 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:41,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash 794856637, now seen corresponding path program 1 times [2024-06-27 18:28:41,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:41,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811388951] [2024-06-27 18:28:41,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:41,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:41,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:41,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811388951] [2024-06-27 18:28:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811388951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:41,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:41,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:41,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303137377] [2024-06-27 18:28:41,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:41,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:28:41,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:41,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:28:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:28:41,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:41,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 135 transitions, 1178 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:41,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:41,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:41,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:42,743 INFO L124 PetriNetUnfolderBase]: 5827/9738 cut-off events. [2024-06-27 18:28:42,744 INFO L125 PetriNetUnfolderBase]: For 89100/89166 co-relation queries the response was YES. [2024-06-27 18:28:42,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41132 conditions, 9738 events. 5827/9738 cut-off events. For 89100/89166 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 65852 event pairs, 2500 based on Foata normal form. 7/9373 useless extension candidates. Maximal degree in co-relation 41090. Up to 8275 conditions per place. [2024-06-27 18:28:42,813 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 126 selfloop transitions, 14 changer transitions 0/154 dead transitions. [2024-06-27 18:28:42,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 1532 flow [2024-06-27 18:28:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:28:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:28:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 18:28:42,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492 [2024-06-27 18:28:42,815 INFO L175 Difference]: Start difference. First operand has 106 places, 135 transitions, 1178 flow. Second operand 5 states and 123 transitions. [2024-06-27 18:28:42,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 1532 flow [2024-06-27 18:28:42,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 154 transitions, 1444 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:42,864 INFO L231 Difference]: Finished difference. Result has 105 places, 138 transitions, 1156 flow [2024-06-27 18:28:42,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1156, PETRI_PLACES=105, PETRI_TRANSITIONS=138} [2024-06-27 18:28:42,864 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-27 18:28:42,865 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 138 transitions, 1156 flow [2024-06-27 18:28:42,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:42,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:42,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:42,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:28:42,865 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:42,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:42,866 INFO L85 PathProgramCache]: Analyzing trace with hash -583835684, now seen corresponding path program 1 times [2024-06-27 18:28:42,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:42,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867737287] [2024-06-27 18:28:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:42,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:43,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:43,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867737287] [2024-06-27 18:28:43,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867737287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:43,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:43,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:43,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97936018] [2024-06-27 18:28:43,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:43,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:43,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:43,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:43,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:44,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:28:44,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 138 transitions, 1156 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 18:28:44,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:44,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:28:44,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:45,252 INFO L124 PetriNetUnfolderBase]: 5852/9460 cut-off events. [2024-06-27 18:28:45,252 INFO L125 PetriNetUnfolderBase]: For 94166/94222 co-relation queries the response was YES. [2024-06-27 18:28:45,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41978 conditions, 9460 events. 5852/9460 cut-off events. For 94166/94222 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 61706 event pairs, 2432 based on Foata normal form. 10/9196 useless extension candidates. Maximal degree in co-relation 41935. Up to 8223 conditions per place. [2024-06-27 18:28:45,323 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 133 selfloop transitions, 31 changer transitions 0/178 dead transitions. [2024-06-27 18:28:45,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 178 transitions, 1646 flow [2024-06-27 18:28:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 18:28:45,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2024-06-27 18:28:45,325 INFO L175 Difference]: Start difference. First operand has 105 places, 138 transitions, 1156 flow. Second operand 7 states and 181 transitions. [2024-06-27 18:28:45,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 178 transitions, 1646 flow [2024-06-27 18:28:45,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 178 transitions, 1530 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:45,391 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 1180 flow [2024-06-27 18:28:45,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1180, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-06-27 18:28:45,392 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 53 predicate places. [2024-06-27 18:28:45,392 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 1180 flow [2024-06-27 18:28:45,392 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 18:28:45,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:45,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:45,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:28:45,393 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:45,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:45,393 INFO L85 PathProgramCache]: Analyzing trace with hash -692039096, now seen corresponding path program 1 times [2024-06-27 18:28:45,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:45,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954963294] [2024-06-27 18:28:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:45,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:46,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954963294] [2024-06-27 18:28:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954963294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:46,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:46,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493020330] [2024-06-27 18:28:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:46,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:46,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 1180 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:46,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:46,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:46,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:47,766 INFO L124 PetriNetUnfolderBase]: 6206/9833 cut-off events. [2024-06-27 18:28:47,766 INFO L125 PetriNetUnfolderBase]: For 99650/99650 co-relation queries the response was YES. [2024-06-27 18:28:47,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44040 conditions, 9833 events. 6206/9833 cut-off events. For 99650/99650 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 62356 event pairs, 2571 based on Foata normal form. 4/9579 useless extension candidates. Maximal degree in co-relation 43996. Up to 8679 conditions per place. [2024-06-27 18:28:47,840 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 148 selfloop transitions, 33 changer transitions 0/190 dead transitions. [2024-06-27 18:28:47,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 190 transitions, 1730 flow [2024-06-27 18:28:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:28:47,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:28:47,842 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 1180 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:28:47,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 190 transitions, 1730 flow [2024-06-27 18:28:47,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 190 transitions, 1662 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:47,904 INFO L231 Difference]: Finished difference. Result has 112 places, 145 transitions, 1253 flow [2024-06-27 18:28:47,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1253, PETRI_PLACES=112, PETRI_TRANSITIONS=145} [2024-06-27 18:28:47,904 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-27 18:28:47,904 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 145 transitions, 1253 flow [2024-06-27 18:28:47,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:47,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:47,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:47,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:28:47,905 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:47,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:47,905 INFO L85 PathProgramCache]: Analyzing trace with hash -688284438, now seen corresponding path program 1 times [2024-06-27 18:28:47,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:47,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383622072] [2024-06-27 18:28:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:47,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:48,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:48,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383622072] [2024-06-27 18:28:48,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383622072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:48,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:48,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:48,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985936604] [2024-06-27 18:28:48,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:48,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:48,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:48,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:48,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:48,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 145 transitions, 1253 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:48,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:48,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:48,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:50,104 INFO L124 PetriNetUnfolderBase]: 6232/9886 cut-off events. [2024-06-27 18:28:50,104 INFO L125 PetriNetUnfolderBase]: For 112173/112173 co-relation queries the response was YES. [2024-06-27 18:28:50,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45975 conditions, 9886 events. 6232/9886 cut-off events. For 112173/112173 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 62762 event pairs, 2521 based on Foata normal form. 2/9628 useless extension candidates. Maximal degree in co-relation 45930. Up to 8775 conditions per place. [2024-06-27 18:28:50,179 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 162 selfloop transitions, 22 changer transitions 0/193 dead transitions. [2024-06-27 18:28:50,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 193 transitions, 1825 flow [2024-06-27 18:28:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:28:50,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-06-27 18:28:50,181 INFO L175 Difference]: Start difference. First operand has 112 places, 145 transitions, 1253 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:28:50,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 193 transitions, 1825 flow [2024-06-27 18:28:50,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 193 transitions, 1714 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:50,245 INFO L231 Difference]: Finished difference. Result has 114 places, 148 transitions, 1252 flow [2024-06-27 18:28:50,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1252, PETRI_PLACES=114, PETRI_TRANSITIONS=148} [2024-06-27 18:28:50,245 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-27 18:28:50,245 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 148 transitions, 1252 flow [2024-06-27 18:28:50,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:50,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:50,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:50,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:28:50,246 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:50,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -688284686, now seen corresponding path program 2 times [2024-06-27 18:28:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:50,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188129542] [2024-06-27 18:28:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188129542] [2024-06-27 18:28:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188129542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825491277] [2024-06-27 18:28:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:51,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:51,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:51,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 148 transitions, 1252 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:51,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:51,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:51,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:52,514 INFO L124 PetriNetUnfolderBase]: 6329/10013 cut-off events. [2024-06-27 18:28:52,515 INFO L125 PetriNetUnfolderBase]: For 126905/126905 co-relation queries the response was YES. [2024-06-27 18:28:52,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48058 conditions, 10013 events. 6329/10013 cut-off events. For 126905/126905 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 63300 event pairs, 2454 based on Foata normal form. 4/9758 useless extension candidates. Maximal degree in co-relation 48012. Up to 8686 conditions per place. [2024-06-27 18:28:52,591 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 143 selfloop transitions, 54 changer transitions 0/206 dead transitions. [2024-06-27 18:28:52,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 206 transitions, 2038 flow [2024-06-27 18:28:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:28:52,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-27 18:28:52,601 INFO L175 Difference]: Start difference. First operand has 114 places, 148 transitions, 1252 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:28:52,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 206 transitions, 2038 flow [2024-06-27 18:28:52,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 206 transitions, 1957 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:52,674 INFO L231 Difference]: Finished difference. Result has 117 places, 160 transitions, 1502 flow [2024-06-27 18:28:52,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1502, PETRI_PLACES=117, PETRI_TRANSITIONS=160} [2024-06-27 18:28:52,675 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-27 18:28:52,675 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 160 transitions, 1502 flow [2024-06-27 18:28:52,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:52,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:52,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:52,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:28:52,676 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:52,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:52,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2121611528, now seen corresponding path program 3 times [2024-06-27 18:28:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:52,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051572222] [2024-06-27 18:28:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:53,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:53,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051572222] [2024-06-27 18:28:53,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051572222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:53,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:53,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:53,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278551131] [2024-06-27 18:28:53,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:53,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:53,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:53,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:53,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 160 transitions, 1502 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:53,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:53,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:53,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:55,107 INFO L124 PetriNetUnfolderBase]: 6348/10024 cut-off events. [2024-06-27 18:28:55,107 INFO L125 PetriNetUnfolderBase]: For 145652/145652 co-relation queries the response was YES. [2024-06-27 18:28:55,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50474 conditions, 10024 events. 6348/10024 cut-off events. For 145652/145652 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 63266 event pairs, 2461 based on Foata normal form. 4/9775 useless extension candidates. Maximal degree in co-relation 50426. Up to 8708 conditions per place. [2024-06-27 18:28:55,172 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 145 selfloop transitions, 56 changer transitions 0/210 dead transitions. [2024-06-27 18:28:55,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 210 transitions, 2200 flow [2024-06-27 18:28:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:28:55,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-06-27 18:28:55,174 INFO L175 Difference]: Start difference. First operand has 117 places, 160 transitions, 1502 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:28:55,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 210 transitions, 2200 flow [2024-06-27 18:28:55,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 210 transitions, 2071 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:55,266 INFO L231 Difference]: Finished difference. Result has 121 places, 164 transitions, 1574 flow [2024-06-27 18:28:55,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1574, PETRI_PLACES=121, PETRI_TRANSITIONS=164} [2024-06-27 18:28:55,267 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-27 18:28:55,267 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 164 transitions, 1574 flow [2024-06-27 18:28:55,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:55,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:55,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:55,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:28:55,268 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:55,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:55,268 INFO L85 PathProgramCache]: Analyzing trace with hash 536655138, now seen corresponding path program 4 times [2024-06-27 18:28:55,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:55,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852048517] [2024-06-27 18:28:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:55,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:56,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:56,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852048517] [2024-06-27 18:28:56,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852048517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:56,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:56,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:56,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447086813] [2024-06-27 18:28:56,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:56,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:56,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:56,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:56,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:56,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:56,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 164 transitions, 1574 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:56,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:56,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:56,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:57,479 INFO L124 PetriNetUnfolderBase]: 6393/10137 cut-off events. [2024-06-27 18:28:57,479 INFO L125 PetriNetUnfolderBase]: For 151743/151764 co-relation queries the response was YES. [2024-06-27 18:28:57,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51319 conditions, 10137 events. 6393/10137 cut-off events. For 151743/151764 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 64485 event pairs, 2316 based on Foata normal form. 12/9887 useless extension candidates. Maximal degree in co-relation 51269. Up to 8576 conditions per place. [2024-06-27 18:28:57,697 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 133 selfloop transitions, 89 changer transitions 0/231 dead transitions. [2024-06-27 18:28:57,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 231 transitions, 2572 flow [2024-06-27 18:28:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:28:57,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-27 18:28:57,699 INFO L175 Difference]: Start difference. First operand has 121 places, 164 transitions, 1574 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:28:57,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 231 transitions, 2572 flow [2024-06-27 18:28:57,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 231 transitions, 2442 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:57,835 INFO L231 Difference]: Finished difference. Result has 126 places, 185 transitions, 2016 flow [2024-06-27 18:28:57,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2016, PETRI_PLACES=126, PETRI_TRANSITIONS=185} [2024-06-27 18:28:57,836 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-27 18:28:57,837 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 185 transitions, 2016 flow [2024-06-27 18:28:57,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:57,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:57,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:57,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:28:57,837 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:57,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:57,838 INFO L85 PathProgramCache]: Analyzing trace with hash 544698956, now seen corresponding path program 2 times [2024-06-27 18:28:57,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:57,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238730679] [2024-06-27 18:28:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:57,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:58,792 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 18:28:58,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:58,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238730679] [2024-06-27 18:28:58,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238730679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:58,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:58,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:58,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995691155] [2024-06-27 18:28:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:58,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:58,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:58,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:58,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:28:58,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 185 transitions, 2016 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:58,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:58,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:28:58,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:00,260 INFO L124 PetriNetUnfolderBase]: 6458/10234 cut-off events. [2024-06-27 18:29:00,261 INFO L125 PetriNetUnfolderBase]: For 176168/176195 co-relation queries the response was YES. [2024-06-27 18:29:00,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54856 conditions, 10234 events. 6458/10234 cut-off events. For 176168/176195 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 64987 event pairs, 2400 based on Foata normal form. 20/9989 useless extension candidates. Maximal degree in co-relation 54803. Up to 8915 conditions per place. [2024-06-27 18:29:00,368 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 182 selfloop transitions, 57 changer transitions 0/248 dead transitions. [2024-06-27 18:29:00,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 248 transitions, 3121 flow [2024-06-27 18:29:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:29:00,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-27 18:29:00,370 INFO L175 Difference]: Start difference. First operand has 126 places, 185 transitions, 2016 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:29:00,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 248 transitions, 3121 flow [2024-06-27 18:29:00,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 248 transitions, 2865 flow, removed 98 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:00,574 INFO L231 Difference]: Finished difference. Result has 131 places, 194 transitions, 2112 flow [2024-06-27 18:29:00,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2112, PETRI_PLACES=131, PETRI_TRANSITIONS=194} [2024-06-27 18:29:00,575 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-27 18:29:00,575 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 194 transitions, 2112 flow [2024-06-27 18:29:00,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:00,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:00,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:00,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:29:00,576 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:00,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash 544707326, now seen corresponding path program 3 times [2024-06-27 18:29:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:00,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260464023] [2024-06-27 18:29:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:01,565 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 18:29:01,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260464023] [2024-06-27 18:29:01,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260464023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:01,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:01,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:01,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975501304] [2024-06-27 18:29:01,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:01,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:01,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:01,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:01,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:01,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:01,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 194 transitions, 2112 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:01,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:01,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:01,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:02,930 INFO L124 PetriNetUnfolderBase]: 6453/10219 cut-off events. [2024-06-27 18:29:02,931 INFO L125 PetriNetUnfolderBase]: For 178962/178989 co-relation queries the response was YES. [2024-06-27 18:29:02,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54653 conditions, 10219 events. 6453/10219 cut-off events. For 178962/178989 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 64884 event pairs, 2393 based on Foata normal form. 20/9977 useless extension candidates. Maximal degree in co-relation 54598. Up to 8910 conditions per place. [2024-06-27 18:29:03,037 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 175 selfloop transitions, 61 changer transitions 0/245 dead transitions. [2024-06-27 18:29:03,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 245 transitions, 2888 flow [2024-06-27 18:29:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:29:03,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975 [2024-06-27 18:29:03,040 INFO L175 Difference]: Start difference. First operand has 131 places, 194 transitions, 2112 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:29:03,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 245 transitions, 2888 flow [2024-06-27 18:29:03,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 245 transitions, 2756 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:03,260 INFO L231 Difference]: Finished difference. Result has 136 places, 194 transitions, 2110 flow [2024-06-27 18:29:03,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2110, PETRI_PLACES=136, PETRI_TRANSITIONS=194} [2024-06-27 18:29:03,260 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 80 predicate places. [2024-06-27 18:29:03,261 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 194 transitions, 2110 flow [2024-06-27 18:29:03,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:03,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:03,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:03,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:29:03,261 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:03,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:03,262 INFO L85 PathProgramCache]: Analyzing trace with hash 536424746, now seen corresponding path program 4 times [2024-06-27 18:29:03,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:03,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896897401] [2024-06-27 18:29:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:03,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896897401] [2024-06-27 18:29:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896897401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:04,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352505343] [2024-06-27 18:29:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:04,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:04,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 194 transitions, 2110 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:04,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:04,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:04,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:05,521 INFO L124 PetriNetUnfolderBase]: 6448/10210 cut-off events. [2024-06-27 18:29:05,522 INFO L125 PetriNetUnfolderBase]: For 182788/182815 co-relation queries the response was YES. [2024-06-27 18:29:05,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54799 conditions, 10210 events. 6448/10210 cut-off events. For 182788/182815 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 64796 event pairs, 2404 based on Foata normal form. 20/9968 useless extension candidates. Maximal degree in co-relation 54742. Up to 8905 conditions per place. [2024-06-27 18:29:05,610 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 181 selfloop transitions, 55 changer transitions 0/245 dead transitions. [2024-06-27 18:29:05,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 245 transitions, 2819 flow [2024-06-27 18:29:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:29:05,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975 [2024-06-27 18:29:05,611 INFO L175 Difference]: Start difference. First operand has 136 places, 194 transitions, 2110 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:29:05,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 245 transitions, 2819 flow [2024-06-27 18:29:05,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 245 transitions, 2673 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:05,778 INFO L231 Difference]: Finished difference. Result has 138 places, 194 transitions, 2083 flow [2024-06-27 18:29:05,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2083, PETRI_PLACES=138, PETRI_TRANSITIONS=194} [2024-06-27 18:29:05,779 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2024-06-27 18:29:05,779 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 194 transitions, 2083 flow [2024-06-27 18:29:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:05,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:05,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:05,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:29:05,779 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:05,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:05,780 INFO L85 PathProgramCache]: Analyzing trace with hash 536417988, now seen corresponding path program 5 times [2024-06-27 18:29:05,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:05,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006992840] [2024-06-27 18:29:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:05,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:06,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:06,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006992840] [2024-06-27 18:29:06,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006992840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:06,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:06,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:06,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469842106] [2024-06-27 18:29:06,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:06,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:06,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:06,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:06,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:06,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:06,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 194 transitions, 2083 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:06,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:06,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:06,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:08,097 INFO L124 PetriNetUnfolderBase]: 6490/10288 cut-off events. [2024-06-27 18:29:08,097 INFO L125 PetriNetUnfolderBase]: For 191477/191498 co-relation queries the response was YES. [2024-06-27 18:29:08,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55490 conditions, 10288 events. 6490/10288 cut-off events. For 191477/191498 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 65464 event pairs, 2343 based on Foata normal form. 12/10036 useless extension candidates. Maximal degree in co-relation 55432. Up to 8688 conditions per place. [2024-06-27 18:29:08,171 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 147 selfloop transitions, 96 changer transitions 0/252 dead transitions. [2024-06-27 18:29:08,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 252 transitions, 3144 flow [2024-06-27 18:29:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:29:08,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 18:29:08,172 INFO L175 Difference]: Start difference. First operand has 138 places, 194 transitions, 2083 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:29:08,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 252 transitions, 3144 flow [2024-06-27 18:29:08,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 252 transitions, 2980 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:08,296 INFO L231 Difference]: Finished difference. Result has 139 places, 206 transitions, 2384 flow [2024-06-27 18:29:08,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2384, PETRI_PLACES=139, PETRI_TRANSITIONS=206} [2024-06-27 18:29:08,296 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 83 predicate places. [2024-06-27 18:29:08,297 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 206 transitions, 2384 flow [2024-06-27 18:29:08,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:08,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:08,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:08,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:29:08,297 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:08,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash 536424498, now seen corresponding path program 6 times [2024-06-27 18:29:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:08,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864572264] [2024-06-27 18:29:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:08,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:09,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864572264] [2024-06-27 18:29:09,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864572264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:09,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:09,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:29:09,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183546104] [2024-06-27 18:29:09,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:09,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:29:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:29:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:29:09,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:09,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 206 transitions, 2384 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:09,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:09,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:09,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:10,534 INFO L124 PetriNetUnfolderBase]: 6480/10282 cut-off events. [2024-06-27 18:29:10,534 INFO L125 PetriNetUnfolderBase]: For 202387/202408 co-relation queries the response was YES. [2024-06-27 18:29:10,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56220 conditions, 10282 events. 6480/10282 cut-off events. For 202387/202408 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 65528 event pairs, 2340 based on Foata normal form. 12/10027 useless extension candidates. Maximal degree in co-relation 56160. Up to 8680 conditions per place. [2024-06-27 18:29:10,633 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 148 selfloop transitions, 94 changer transitions 0/251 dead transitions. [2024-06-27 18:29:10,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 251 transitions, 3112 flow [2024-06-27 18:29:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:29:10,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 18:29:10,635 INFO L175 Difference]: Start difference. First operand has 139 places, 206 transitions, 2384 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:29:10,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 251 transitions, 3112 flow [2024-06-27 18:29:10,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 251 transitions, 2842 flow, removed 86 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:10,861 INFO L231 Difference]: Finished difference. Result has 144 places, 206 transitions, 2312 flow [2024-06-27 18:29:10,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2312, PETRI_PLACES=144, PETRI_TRANSITIONS=206} [2024-06-27 18:29:10,862 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2024-06-27 18:29:10,862 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 206 transitions, 2312 flow [2024-06-27 18:29:10,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:10,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:10,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:10,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:29:10,862 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:10,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash 545006538, now seen corresponding path program 1 times [2024-06-27 18:29:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:10,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787610007] [2024-06-27 18:29:10,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:10,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:11,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787610007] [2024-06-27 18:29:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787610007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:11,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:11,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:11,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163651269] [2024-06-27 18:29:11,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:11,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:11,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:11,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:11,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:12,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:12,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 206 transitions, 2312 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:12,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:12,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:12,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:13,355 INFO L124 PetriNetUnfolderBase]: 6481/10489 cut-off events. [2024-06-27 18:29:13,355 INFO L125 PetriNetUnfolderBase]: For 206303/206303 co-relation queries the response was YES. [2024-06-27 18:29:13,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56045 conditions, 10489 events. 6481/10489 cut-off events. For 206303/206303 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 68422 event pairs, 2409 based on Foata normal form. 2/10171 useless extension candidates. Maximal degree in co-relation 55984. Up to 9109 conditions per place. [2024-06-27 18:29:13,452 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 229 selfloop transitions, 28 changer transitions 0/266 dead transitions. [2024-06-27 18:29:13,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 266 transitions, 3110 flow [2024-06-27 18:29:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:29:13,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822222222222222 [2024-06-27 18:29:13,453 INFO L175 Difference]: Start difference. First operand has 144 places, 206 transitions, 2312 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:29:13,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 266 transitions, 3110 flow [2024-06-27 18:29:13,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 266 transitions, 2906 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:13,716 INFO L231 Difference]: Finished difference. Result has 148 places, 213 transitions, 2277 flow [2024-06-27 18:29:13,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2277, PETRI_PLACES=148, PETRI_TRANSITIONS=213} [2024-06-27 18:29:13,717 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 92 predicate places. [2024-06-27 18:29:13,717 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 213 transitions, 2277 flow [2024-06-27 18:29:13,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:13,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:13,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:13,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:29:13,718 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:13,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:13,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1129246242, now seen corresponding path program 1 times [2024-06-27 18:29:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:13,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003661498] [2024-06-27 18:29:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:13,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003661498] [2024-06-27 18:29:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003661498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908514246] [2024-06-27 18:29:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:14,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:14,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:14,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:14,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 213 transitions, 2277 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 18:29:14,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:14,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:14,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:15,829 INFO L124 PetriNetUnfolderBase]: 7144/11560 cut-off events. [2024-06-27 18:29:15,830 INFO L125 PetriNetUnfolderBase]: For 249219/249308 co-relation queries the response was YES. [2024-06-27 18:29:15,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62793 conditions, 11560 events. 7144/11560 cut-off events. For 249219/249308 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 76214 event pairs, 2824 based on Foata normal form. 26/11229 useless extension candidates. Maximal degree in co-relation 62730. Up to 10011 conditions per place. [2024-06-27 18:29:15,937 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 194 selfloop transitions, 17 changer transitions 0/238 dead transitions. [2024-06-27 18:29:15,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 238 transitions, 2819 flow [2024-06-27 18:29:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:29:15,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:29:15,938 INFO L175 Difference]: Start difference. First operand has 148 places, 213 transitions, 2277 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:29:15,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 238 transitions, 2819 flow [2024-06-27 18:29:16,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 238 transitions, 2708 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:16,178 INFO L231 Difference]: Finished difference. Result has 148 places, 216 transitions, 2244 flow [2024-06-27 18:29:16,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2244, PETRI_PLACES=148, PETRI_TRANSITIONS=216} [2024-06-27 18:29:16,179 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 92 predicate places. [2024-06-27 18:29:16,179 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 216 transitions, 2244 flow [2024-06-27 18:29:16,179 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 18:29:16,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:16,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:16,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:29:16,180 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:16,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1226371386, now seen corresponding path program 1 times [2024-06-27 18:29:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:16,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972465369] [2024-06-27 18:29:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:16,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:17,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972465369] [2024-06-27 18:29:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972465369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:17,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:17,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:17,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2971193] [2024-06-27 18:29:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:17,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:17,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:17,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:29:17,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 216 transitions, 2244 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 18:29:17,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:17,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:29:17,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:19,067 INFO L124 PetriNetUnfolderBase]: 7310/11693 cut-off events. [2024-06-27 18:29:19,067 INFO L125 PetriNetUnfolderBase]: For 284762/284858 co-relation queries the response was YES. [2024-06-27 18:29:19,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66706 conditions, 11693 events. 7310/11693 cut-off events. For 284762/284858 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 77593 event pairs, 2218 based on Foata normal form. 28/11346 useless extension candidates. Maximal degree in co-relation 66642. Up to 10079 conditions per place. [2024-06-27 18:29:19,180 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 205 selfloop transitions, 36 changer transitions 0/271 dead transitions. [2024-06-27 18:29:19,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 271 transitions, 2976 flow [2024-06-27 18:29:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:19,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:29:19,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-27 18:29:19,181 INFO L175 Difference]: Start difference. First operand has 148 places, 216 transitions, 2244 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:29:19,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 271 transitions, 2976 flow [2024-06-27 18:29:19,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 271 transitions, 2924 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:19,420 INFO L231 Difference]: Finished difference. Result has 154 places, 228 transitions, 2444 flow [2024-06-27 18:29:19,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2444, PETRI_PLACES=154, PETRI_TRANSITIONS=228} [2024-06-27 18:29:19,420 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 98 predicate places. [2024-06-27 18:29:19,421 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 228 transitions, 2444 flow [2024-06-27 18:29:19,421 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 18:29:19,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:19,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:19,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:29:19,421 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:19,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1226432766, now seen corresponding path program 2 times [2024-06-27 18:29:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:19,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593998653] [2024-06-27 18:29:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:20,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:20,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593998653] [2024-06-27 18:29:20,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593998653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:20,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:20,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:20,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630204725] [2024-06-27 18:29:20,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:20,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:20,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:20,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:20,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:29:20,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 228 transitions, 2444 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 18:29:20,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:20,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:29:20,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:22,577 INFO L124 PetriNetUnfolderBase]: 7348/11764 cut-off events. [2024-06-27 18:29:22,577 INFO L125 PetriNetUnfolderBase]: For 308346/308444 co-relation queries the response was YES. [2024-06-27 18:29:22,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69329 conditions, 11764 events. 7348/11764 cut-off events. For 308346/308444 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 78244 event pairs, 2610 based on Foata normal form. 28/11410 useless extension candidates. Maximal degree in co-relation 69262. Up to 10124 conditions per place. [2024-06-27 18:29:22,705 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 209 selfloop transitions, 40 changer transitions 0/279 dead transitions. [2024-06-27 18:29:22,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 279 transitions, 3210 flow [2024-06-27 18:29:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 18:29:22,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175 [2024-06-27 18:29:22,707 INFO L175 Difference]: Start difference. First operand has 154 places, 228 transitions, 2444 flow. Second operand 8 states and 207 transitions. [2024-06-27 18:29:22,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 279 transitions, 3210 flow [2024-06-27 18:29:22,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 279 transitions, 3099 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:22,997 INFO L231 Difference]: Finished difference. Result has 160 places, 235 transitions, 2586 flow [2024-06-27 18:29:22,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2586, PETRI_PLACES=160, PETRI_TRANSITIONS=235} [2024-06-27 18:29:22,998 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 104 predicate places. [2024-06-27 18:29:22,998 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 235 transitions, 2586 flow [2024-06-27 18:29:22,998 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 18:29:22,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:22,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:22,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:29:22,998 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:22,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1226432921, now seen corresponding path program 1 times [2024-06-27 18:29:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859782125] [2024-06-27 18:29:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859782125] [2024-06-27 18:29:24,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859782125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:24,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:24,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:24,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729019622] [2024-06-27 18:29:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:24,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:24,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:24,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 235 transitions, 2586 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:24,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:24,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:24,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:26,090 INFO L124 PetriNetUnfolderBase]: 7712/12233 cut-off events. [2024-06-27 18:29:26,091 INFO L125 PetriNetUnfolderBase]: For 330010/330020 co-relation queries the response was YES. [2024-06-27 18:29:26,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72936 conditions, 12233 events. 7712/12233 cut-off events. For 330010/330020 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 80459 event pairs, 2717 based on Foata normal form. 2/11848 useless extension candidates. Maximal degree in co-relation 72867. Up to 10698 conditions per place. [2024-06-27 18:29:26,201 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 227 selfloop transitions, 45 changer transitions 0/283 dead transitions. [2024-06-27 18:29:26,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 283 transitions, 3350 flow [2024-06-27 18:29:26,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:29:26,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025 [2024-06-27 18:29:26,202 INFO L175 Difference]: Start difference. First operand has 160 places, 235 transitions, 2586 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:29:26,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 283 transitions, 3350 flow [2024-06-27 18:29:26,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 283 transitions, 3109 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:26,537 INFO L231 Difference]: Finished difference. Result has 163 places, 239 transitions, 2547 flow [2024-06-27 18:29:26,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2547, PETRI_PLACES=163, PETRI_TRANSITIONS=239} [2024-06-27 18:29:26,537 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 107 predicate places. [2024-06-27 18:29:26,537 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 239 transitions, 2547 flow [2024-06-27 18:29:26,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:26,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:26,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:26,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:29:26,538 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:26,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1229264058, now seen corresponding path program 1 times [2024-06-27 18:29:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:26,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115487442] [2024-06-27 18:29:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:27,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:27,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115487442] [2024-06-27 18:29:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115487442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:27,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:27,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130630371] [2024-06-27 18:29:27,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:27,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:27,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:27,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 239 transitions, 2547 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:27,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:27,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:27,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:29,505 INFO L124 PetriNetUnfolderBase]: 7736/12221 cut-off events. [2024-06-27 18:29:29,506 INFO L125 PetriNetUnfolderBase]: For 341810/341820 co-relation queries the response was YES. [2024-06-27 18:29:29,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73172 conditions, 12221 events. 7736/12221 cut-off events. For 341810/341820 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 79879 event pairs, 2660 based on Foata normal form. 4/11858 useless extension candidates. Maximal degree in co-relation 73102. Up to 10719 conditions per place. [2024-06-27 18:29:29,642 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 243 selfloop transitions, 41 changer transitions 0/295 dead transitions. [2024-06-27 18:29:29,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 295 transitions, 3361 flow [2024-06-27 18:29:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:29:29,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-06-27 18:29:29,644 INFO L175 Difference]: Start difference. First operand has 163 places, 239 transitions, 2547 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:29:29,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 295 transitions, 3361 flow [2024-06-27 18:29:29,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 295 transitions, 3259 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:29,957 INFO L231 Difference]: Finished difference. Result has 166 places, 243 transitions, 2630 flow [2024-06-27 18:29:29,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2630, PETRI_PLACES=166, PETRI_TRANSITIONS=243} [2024-06-27 18:29:29,957 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 110 predicate places. [2024-06-27 18:29:29,957 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 243 transitions, 2630 flow [2024-06-27 18:29:29,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:29,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:29,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:29,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:29:29,958 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:29,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash 138012244, now seen corresponding path program 2 times [2024-06-27 18:29:29,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:29,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127935817] [2024-06-27 18:29:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:29,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:30,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:30,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127935817] [2024-06-27 18:29:30,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127935817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:30,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890149645] [2024-06-27 18:29:30,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:30,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:30,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:30,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 243 transitions, 2630 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:30,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:30,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:30,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:32,937 INFO L124 PetriNetUnfolderBase]: 8080/12793 cut-off events. [2024-06-27 18:29:32,937 INFO L125 PetriNetUnfolderBase]: For 391833/391833 co-relation queries the response was YES. [2024-06-27 18:29:32,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80074 conditions, 12793 events. 8080/12793 cut-off events. For 391833/391833 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 84167 event pairs, 2448 based on Foata normal form. 4/12414 useless extension candidates. Maximal degree in co-relation 80003. Up to 10740 conditions per place. [2024-06-27 18:29:33,059 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 221 selfloop transitions, 84 changer transitions 0/316 dead transitions. [2024-06-27 18:29:33,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 316 transitions, 4013 flow [2024-06-27 18:29:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:29:33,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-06-27 18:29:33,061 INFO L175 Difference]: Start difference. First operand has 166 places, 243 transitions, 2630 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:29:33,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 316 transitions, 4013 flow [2024-06-27 18:29:33,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 316 transitions, 3858 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:33,389 INFO L231 Difference]: Finished difference. Result has 170 places, 259 transitions, 3042 flow [2024-06-27 18:29:33,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3042, PETRI_PLACES=170, PETRI_TRANSITIONS=259} [2024-06-27 18:29:33,390 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 114 predicate places. [2024-06-27 18:29:33,390 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 259 transitions, 3042 flow [2024-06-27 18:29:33,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:33,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:33,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:29:33,390 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:33,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash 138019684, now seen corresponding path program 3 times [2024-06-27 18:29:33,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:33,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472811867] [2024-06-27 18:29:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:34,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472811867] [2024-06-27 18:29:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472811867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:34,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417104528] [2024-06-27 18:29:34,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:34,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:34,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:34,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:34,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:34,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 259 transitions, 3042 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:34,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:34,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:34,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:36,430 INFO L124 PetriNetUnfolderBase]: 8066/12767 cut-off events. [2024-06-27 18:29:36,430 INFO L125 PetriNetUnfolderBase]: For 426613/426613 co-relation queries the response was YES. [2024-06-27 18:29:36,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83674 conditions, 12767 events. 8066/12767 cut-off events. For 426613/426613 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 83888 event pairs, 2445 based on Foata normal form. 8/12395 useless extension candidates. Maximal degree in co-relation 83600. Up to 10736 conditions per place. [2024-06-27 18:29:36,609 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 217 selfloop transitions, 86 changer transitions 0/314 dead transitions. [2024-06-27 18:29:36,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 314 transitions, 3971 flow [2024-06-27 18:29:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:36,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:29:36,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2024-06-27 18:29:36,612 INFO L175 Difference]: Start difference. First operand has 170 places, 259 transitions, 3042 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:29:36,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 314 transitions, 3971 flow [2024-06-27 18:29:37,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 314 transitions, 3727 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:37,158 INFO L231 Difference]: Finished difference. Result has 175 places, 259 transitions, 2981 flow [2024-06-27 18:29:37,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2981, PETRI_PLACES=175, PETRI_TRANSITIONS=259} [2024-06-27 18:29:37,159 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2024-06-27 18:29:37,159 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 259 transitions, 2981 flow [2024-06-27 18:29:37,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:37,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:37,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:37,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:29:37,160 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:37,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1345443006, now seen corresponding path program 3 times [2024-06-27 18:29:37,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:37,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410773438] [2024-06-27 18:29:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:37,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:38,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410773438] [2024-06-27 18:29:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410773438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:38,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:38,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8954402] [2024-06-27 18:29:38,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:38,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:38,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:38,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:29:38,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 259 transitions, 2981 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 18:29:38,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:38,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:29:38,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:40,285 INFO L124 PetriNetUnfolderBase]: 7702/12361 cut-off events. [2024-06-27 18:29:40,285 INFO L125 PetriNetUnfolderBase]: For 433277/433387 co-relation queries the response was YES. [2024-06-27 18:29:40,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81494 conditions, 12361 events. 7702/12361 cut-off events. For 433277/433387 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 82804 event pairs, 2416 based on Foata normal form. 52/12002 useless extension candidates. Maximal degree in co-relation 81418. Up to 10599 conditions per place. [2024-06-27 18:29:40,435 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 223 selfloop transitions, 51 changer transitions 0/305 dead transitions. [2024-06-27 18:29:40,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 3755 flow [2024-06-27 18:29:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:29:40,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 18:29:40,437 INFO L175 Difference]: Start difference. First operand has 175 places, 259 transitions, 2981 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:29:40,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 3755 flow [2024-06-27 18:29:40,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 305 transitions, 3575 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:40,836 INFO L231 Difference]: Finished difference. Result has 176 places, 262 transitions, 3007 flow [2024-06-27 18:29:40,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3007, PETRI_PLACES=176, PETRI_TRANSITIONS=262} [2024-06-27 18:29:40,836 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 120 predicate places. [2024-06-27 18:29:40,836 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 262 transitions, 3007 flow [2024-06-27 18:29:40,837 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 18:29:40,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:40,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:40,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:29:40,837 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:40,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1345448958, now seen corresponding path program 4 times [2024-06-27 18:29:40,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:40,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704841232] [2024-06-27 18:29:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:41,796 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 18:29:41,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:41,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704841232] [2024-06-27 18:29:41,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704841232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:41,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:41,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:41,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131954660] [2024-06-27 18:29:41,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:41,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:41,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:41,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:41,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 262 transitions, 3007 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:41,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:41,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:41,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:44,098 INFO L124 PetriNetUnfolderBase]: 8121/12846 cut-off events. [2024-06-27 18:29:44,098 INFO L125 PetriNetUnfolderBase]: For 456040/456040 co-relation queries the response was YES. [2024-06-27 18:29:44,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85152 conditions, 12846 events. 8121/12846 cut-off events. For 456040/456040 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 84317 event pairs, 2524 based on Foata normal form. 4/12469 useless extension candidates. Maximal degree in co-relation 85075. Up to 10804 conditions per place. [2024-06-27 18:29:44,244 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 225 selfloop transitions, 85 changer transitions 0/321 dead transitions. [2024-06-27 18:29:44,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 321 transitions, 4050 flow [2024-06-27 18:29:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 18:29:44,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-06-27 18:29:44,246 INFO L175 Difference]: Start difference. First operand has 176 places, 262 transitions, 3007 flow. Second operand 9 states and 231 transitions. [2024-06-27 18:29:44,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 321 transitions, 4050 flow [2024-06-27 18:29:44,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 321 transitions, 3868 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:44,673 INFO L231 Difference]: Finished difference. Result has 179 places, 266 transitions, 3098 flow [2024-06-27 18:29:44,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3098, PETRI_PLACES=179, PETRI_TRANSITIONS=266} [2024-06-27 18:29:44,673 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 123 predicate places. [2024-06-27 18:29:44,674 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 266 transitions, 3098 flow [2024-06-27 18:29:44,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:44,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:44,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:44,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:29:44,674 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:44,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash -661194980, now seen corresponding path program 1 times [2024-06-27 18:29:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106124548] [2024-06-27 18:29:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:44,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:45,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:45,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106124548] [2024-06-27 18:29:45,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106124548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:45,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:45,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:29:45,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124914297] [2024-06-27 18:29:45,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:45,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:29:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:29:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:29:45,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:45,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 266 transitions, 3098 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 18:29:45,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:45,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:45,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:47,243 INFO L124 PetriNetUnfolderBase]: 8197/13072 cut-off events. [2024-06-27 18:29:47,243 INFO L125 PetriNetUnfolderBase]: For 477123/477243 co-relation queries the response was YES. [2024-06-27 18:29:47,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85786 conditions, 13072 events. 8197/13072 cut-off events. For 477123/477243 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 85985 event pairs, 2668 based on Foata normal form. 52/12676 useless extension candidates. Maximal degree in co-relation 85708. Up to 11359 conditions per place. [2024-06-27 18:29:47,403 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 248 selfloop transitions, 26 changer transitions 0/303 dead transitions. [2024-06-27 18:29:47,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 303 transitions, 3984 flow [2024-06-27 18:29:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:29:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:29:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:29:47,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2024-06-27 18:29:47,405 INFO L175 Difference]: Start difference. First operand has 179 places, 266 transitions, 3098 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:29:47,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 303 transitions, 3984 flow [2024-06-27 18:29:47,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 303 transitions, 3791 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:47,901 INFO L231 Difference]: Finished difference. Result has 179 places, 272 transitions, 3063 flow [2024-06-27 18:29:47,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3063, PETRI_PLACES=179, PETRI_TRANSITIONS=272} [2024-06-27 18:29:47,902 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 123 predicate places. [2024-06-27 18:29:47,902 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 272 transitions, 3063 flow [2024-06-27 18:29:47,903 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 18:29:47,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:47,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:47,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:29:47,903 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:47,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash -285003996, now seen corresponding path program 5 times [2024-06-27 18:29:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:47,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157553277] [2024-06-27 18:29:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:47,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:48,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157553277] [2024-06-27 18:29:48,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157553277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:48,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:48,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759647883] [2024-06-27 18:29:48,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:48,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:48,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:48,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:48,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:49,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:49,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 272 transitions, 3063 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:49,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:49,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:49,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:50,894 INFO L124 PetriNetUnfolderBase]: 8275/12918 cut-off events. [2024-06-27 18:29:50,894 INFO L125 PetriNetUnfolderBase]: For 505746/505776 co-relation queries the response was YES. [2024-06-27 18:29:50,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88885 conditions, 12918 events. 8275/12918 cut-off events. For 505746/505776 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 83707 event pairs, 2137 based on Foata normal form. 24/12613 useless extension candidates. Maximal degree in co-relation 88806. Up to 10354 conditions per place. [2024-06-27 18:29:51,058 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 199 selfloop transitions, 152 changer transitions 0/362 dead transitions. [2024-06-27 18:29:51,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 362 transitions, 4802 flow [2024-06-27 18:29:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:29:51,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-27 18:29:51,060 INFO L175 Difference]: Start difference. First operand has 179 places, 272 transitions, 3063 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:29:51,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 362 transitions, 4802 flow [2024-06-27 18:29:51,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 362 transitions, 4740 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 18:29:51,669 INFO L231 Difference]: Finished difference. Result has 188 places, 298 transitions, 3874 flow [2024-06-27 18:29:51,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3874, PETRI_PLACES=188, PETRI_TRANSITIONS=298} [2024-06-27 18:29:51,670 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 132 predicate places. [2024-06-27 18:29:51,670 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 298 transitions, 3874 flow [2024-06-27 18:29:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:51,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:51,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:51,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:29:51,670 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:51,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1863796310, now seen corresponding path program 6 times [2024-06-27 18:29:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097295008] [2024-06-27 18:29:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:52,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:52,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097295008] [2024-06-27 18:29:52,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097295008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:52,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:52,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:52,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681322426] [2024-06-27 18:29:52,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:52,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:52,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:52,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:52,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 298 transitions, 3874 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:52,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:52,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:52,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:54,803 INFO L124 PetriNetUnfolderBase]: 8495/13203 cut-off events. [2024-06-27 18:29:54,804 INFO L125 PetriNetUnfolderBase]: For 568901/568931 co-relation queries the response was YES. [2024-06-27 18:29:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97435 conditions, 13203 events. 8495/13203 cut-off events. For 568901/568931 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 85105 event pairs, 2161 based on Foata normal form. 16/12903 useless extension candidates. Maximal degree in co-relation 97352. Up to 10493 conditions per place. [2024-06-27 18:29:54,973 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 210 selfloop transitions, 157 changer transitions 0/378 dead transitions. [2024-06-27 18:29:54,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 378 transitions, 5746 flow [2024-06-27 18:29:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 18:29:54,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-27 18:29:54,975 INFO L175 Difference]: Start difference. First operand has 188 places, 298 transitions, 3874 flow. Second operand 9 states and 238 transitions. [2024-06-27 18:29:54,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 378 transitions, 5746 flow [2024-06-27 18:29:55,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 378 transitions, 5378 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:55,782 INFO L231 Difference]: Finished difference. Result has 195 places, 313 transitions, 4285 flow [2024-06-27 18:29:55,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4285, PETRI_PLACES=195, PETRI_TRANSITIONS=313} [2024-06-27 18:29:55,782 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 139 predicate places. [2024-06-27 18:29:55,782 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 313 transitions, 4285 flow [2024-06-27 18:29:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:55,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:55,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:55,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:29:55,783 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:29:55,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1856646470, now seen corresponding path program 7 times [2024-06-27 18:29:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114253863] [2024-06-27 18:29:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:56,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:56,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114253863] [2024-06-27 18:29:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114253863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:56,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:56,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479042692] [2024-06-27 18:29:56,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:56,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:56,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:56,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:29:56,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 313 transitions, 4285 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:56,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:56,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:29:56,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:59,079 INFO L124 PetriNetUnfolderBase]: 8648/13450 cut-off events. [2024-06-27 18:29:59,079 INFO L125 PetriNetUnfolderBase]: For 596248/596278 co-relation queries the response was YES. [2024-06-27 18:29:59,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100363 conditions, 13450 events. 8648/13450 cut-off events. For 596248/596278 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 86920 event pairs, 2242 based on Foata normal form. 16/13140 useless extension candidates. Maximal degree in co-relation 100276. Up to 10593 conditions per place. [2024-06-27 18:29:59,255 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 224 selfloop transitions, 158 changer transitions 0/393 dead transitions. [2024-06-27 18:29:59,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 393 transitions, 6315 flow [2024-06-27 18:29:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:59,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:29:59,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-27 18:29:59,257 INFO L175 Difference]: Start difference. First operand has 195 places, 313 transitions, 4285 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:29:59,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 393 transitions, 6315 flow [2024-06-27 18:30:00,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 393 transitions, 5977 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-27 18:30:00,019 INFO L231 Difference]: Finished difference. Result has 202 places, 327 transitions, 4678 flow [2024-06-27 18:30:00,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4678, PETRI_PLACES=202, PETRI_TRANSITIONS=327} [2024-06-27 18:30:00,020 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 146 predicate places. [2024-06-27 18:30:00,020 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 327 transitions, 4678 flow [2024-06-27 18:30:00,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:00,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:00,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:00,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:30:00,020 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:00,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash -294200766, now seen corresponding path program 8 times [2024-06-27 18:30:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:00,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631811387] [2024-06-27 18:30:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:00,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:01,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:01,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631811387] [2024-06-27 18:30:01,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631811387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:01,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:01,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:30:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521888510] [2024-06-27 18:30:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:01,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:30:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:30:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:30:01,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:30:01,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 327 transitions, 4678 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:01,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:01,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:30:01,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:03,477 INFO L124 PetriNetUnfolderBase]: 8634/13449 cut-off events. [2024-06-27 18:30:03,478 INFO L125 PetriNetUnfolderBase]: For 629358/629388 co-relation queries the response was YES. [2024-06-27 18:30:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101809 conditions, 13449 events. 8634/13449 cut-off events. For 629358/629388 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 87171 event pairs, 2172 based on Foata normal form. 20/13140 useless extension candidates. Maximal degree in co-relation 101719. Up to 10589 conditions per place. [2024-06-27 18:30:03,668 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 217 selfloop transitions, 163 changer transitions 0/391 dead transitions. [2024-06-27 18:30:03,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 391 transitions, 6205 flow [2024-06-27 18:30:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:30:03,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311111111111111 [2024-06-27 18:30:03,669 INFO L175 Difference]: Start difference. First operand has 202 places, 327 transitions, 4678 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:30:03,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 391 transitions, 6205 flow [2024-06-27 18:30:04,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 391 transitions, 5797 flow, removed 104 selfloop flow, removed 4 redundant places. [2024-06-27 18:30:04,639 INFO L231 Difference]: Finished difference. Result has 207 places, 327 transitions, 4607 flow [2024-06-27 18:30:04,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4607, PETRI_PLACES=207, PETRI_TRANSITIONS=327} [2024-06-27 18:30:04,640 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 151 predicate places. [2024-06-27 18:30:04,640 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 327 transitions, 4607 flow [2024-06-27 18:30:04,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:04,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:04,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:30:04,641 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:04,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash -550916478, now seen corresponding path program 4 times [2024-06-27 18:30:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330879085] [2024-06-27 18:30:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:05,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:05,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330879085] [2024-06-27 18:30:05,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330879085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:05,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:05,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:30:05,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783360287] [2024-06-27 18:30:05,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:05,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:30:05,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:05,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:30:05,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:30:05,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:30:05,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 327 transitions, 4607 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 18:30:05,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:05,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:30:05,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:09,679 INFO L124 PetriNetUnfolderBase]: 8195/12924 cut-off events. [2024-06-27 18:30:09,679 INFO L125 PetriNetUnfolderBase]: For 632977/633087 co-relation queries the response was YES. [2024-06-27 18:30:09,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98287 conditions, 12924 events. 8195/12924 cut-off events. For 632977/633087 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 85076 event pairs, 2181 based on Foata normal form. 16/12556 useless extension candidates. Maximal degree in co-relation 98196. Up to 11184 conditions per place. [2024-06-27 18:30:09,820 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 275 selfloop transitions, 65 changer transitions 0/371 dead transitions. [2024-06-27 18:30:09,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 371 transitions, 5523 flow [2024-06-27 18:30:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:30:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:30:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:30:09,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-27 18:30:09,822 INFO L175 Difference]: Start difference. First operand has 207 places, 327 transitions, 4607 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:30:09,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 371 transitions, 5523 flow [2024-06-27 18:30:10,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 371 transitions, 5186 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:10,577 INFO L231 Difference]: Finished difference. Result has 208 places, 330 transitions, 4510 flow [2024-06-27 18:30:10,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4510, PETRI_PLACES=208, PETRI_TRANSITIONS=330} [2024-06-27 18:30:10,670 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 152 predicate places. [2024-06-27 18:30:10,670 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 330 transitions, 4510 flow [2024-06-27 18:30:10,670 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 18:30:10,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:10,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:10,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:30:10,670 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:10,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash -550701276, now seen corresponding path program 9 times [2024-06-27 18:30:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:10,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957273558] [2024-06-27 18:30:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:11,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957273558] [2024-06-27 18:30:11,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957273558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:11,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:11,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:30:11,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672556147] [2024-06-27 18:30:11,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:11,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:30:11,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:11,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:30:11,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:30:11,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:30:11,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 330 transitions, 4510 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:11,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:11,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:30:11,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:15,182 INFO L124 PetriNetUnfolderBase]: 8617/13417 cut-off events. [2024-06-27 18:30:15,182 INFO L125 PetriNetUnfolderBase]: For 652160/652190 co-relation queries the response was YES. [2024-06-27 18:30:15,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100661 conditions, 13417 events. 8617/13417 cut-off events. For 652160/652190 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 86920 event pairs, 2225 based on Foata normal form. 20/13108 useless extension candidates. Maximal degree in co-relation 100569. Up to 10580 conditions per place. [2024-06-27 18:30:15,333 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 225 selfloop transitions, 158 changer transitions 0/394 dead transitions. [2024-06-27 18:30:15,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 394 transitions, 6067 flow [2024-06-27 18:30:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 18:30:15,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 18:30:15,337 INFO L175 Difference]: Start difference. First operand has 208 places, 330 transitions, 4510 flow. Second operand 9 states and 240 transitions. [2024-06-27 18:30:15,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 394 transitions, 6067 flow [2024-06-27 18:30:16,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 394 transitions, 5773 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:16,305 INFO L231 Difference]: Finished difference. Result has 211 places, 330 transitions, 4543 flow [2024-06-27 18:30:16,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4216, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4543, PETRI_PLACES=211, PETRI_TRANSITIONS=330} [2024-06-27 18:30:16,306 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 155 predicate places. [2024-06-27 18:30:16,306 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 330 transitions, 4543 flow [2024-06-27 18:30:16,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:16,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:16,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:16,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:30:16,307 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:16,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash -550910526, now seen corresponding path program 10 times [2024-06-27 18:30:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:16,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577936048] [2024-06-27 18:30:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:16,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:17,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:17,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577936048] [2024-06-27 18:30:17,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577936048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:17,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:17,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:30:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126266217] [2024-06-27 18:30:17,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:17,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:30:17,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:30:17,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:30:17,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:30:17,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 330 transitions, 4543 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:17,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:17,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:30:17,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:20,567 INFO L124 PetriNetUnfolderBase]: 8607/13395 cut-off events. [2024-06-27 18:30:20,568 INFO L125 PetriNetUnfolderBase]: For 658831/658861 co-relation queries the response was YES. [2024-06-27 18:30:20,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100687 conditions, 13395 events. 8607/13395 cut-off events. For 658831/658861 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 86508 event pairs, 2214 based on Foata normal form. 16/13085 useless extension candidates. Maximal degree in co-relation 100594. Up to 10576 conditions per place. [2024-06-27 18:30:20,732 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 213 selfloop transitions, 171 changer transitions 0/395 dead transitions. [2024-06-27 18:30:20,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 395 transitions, 6036 flow [2024-06-27 18:30:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 18:30:20,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-27 18:30:20,734 INFO L175 Difference]: Start difference. First operand has 211 places, 330 transitions, 4543 flow. Second operand 9 states and 237 transitions. [2024-06-27 18:30:20,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 395 transitions, 6036 flow [2024-06-27 18:30:21,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 395 transitions, 5718 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:21,588 INFO L231 Difference]: Finished difference. Result has 213 places, 334 transitions, 4700 flow [2024-06-27 18:30:21,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4700, PETRI_PLACES=213, PETRI_TRANSITIONS=334} [2024-06-27 18:30:21,589 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 157 predicate places. [2024-06-27 18:30:21,589 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 334 transitions, 4700 flow [2024-06-27 18:30:21,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:21,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:21,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:21,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:30:21,589 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:21,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash -646910180, now seen corresponding path program 2 times [2024-06-27 18:30:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:21,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005041918] [2024-06-27 18:30:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:21,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:22,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:22,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005041918] [2024-06-27 18:30:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005041918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:22,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:22,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:30:22,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84177234] [2024-06-27 18:30:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:22,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:30:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:30:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:30:22,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:30:22,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 334 transitions, 4700 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 18:30:22,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:22,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:30:22,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:25,358 INFO L124 PetriNetUnfolderBase]: 8859/13960 cut-off events. [2024-06-27 18:30:25,358 INFO L125 PetriNetUnfolderBase]: For 683981/684145 co-relation queries the response was YES. [2024-06-27 18:30:25,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101484 conditions, 13960 events. 8859/13960 cut-off events. For 683981/684145 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 90900 event pairs, 2758 based on Foata normal form. 81/13570 useless extension candidates. Maximal degree in co-relation 101390. Up to 12278 conditions per place. [2024-06-27 18:30:25,541 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 301 selfloop transitions, 26 changer transitions 0/356 dead transitions. [2024-06-27 18:30:25,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 356 transitions, 5474 flow [2024-06-27 18:30:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:30:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:30:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:30:25,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-27 18:30:25,542 INFO L175 Difference]: Start difference. First operand has 213 places, 334 transitions, 4700 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:30:25,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 356 transitions, 5474 flow [2024-06-27 18:30:26,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 356 transitions, 5079 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:26,615 INFO L231 Difference]: Finished difference. Result has 213 places, 334 transitions, 4363 flow [2024-06-27 18:30:26,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4305, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4363, PETRI_PLACES=213, PETRI_TRANSITIONS=334} [2024-06-27 18:30:26,615 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 157 predicate places. [2024-06-27 18:30:26,615 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 334 transitions, 4363 flow [2024-06-27 18:30:26,616 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 18:30:26,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:26,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:26,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:30:26,616 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:26,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:26,617 INFO L85 PathProgramCache]: Analyzing trace with hash -655445317, now seen corresponding path program 1 times [2024-06-27 18:30:26,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:26,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702572804] [2024-06-27 18:30:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702572804] [2024-06-27 18:30:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702572804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:27,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:27,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:30:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834072372] [2024-06-27 18:30:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:30:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:30:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:30:27,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:30:27,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 334 transitions, 4363 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:27,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:27,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:30:27,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:29,707 INFO L124 PetriNetUnfolderBase]: 7922/12499 cut-off events. [2024-06-27 18:30:29,707 INFO L125 PetriNetUnfolderBase]: For 609281/609411 co-relation queries the response was YES. [2024-06-27 18:30:29,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90291 conditions, 12499 events. 7922/12499 cut-off events. For 609281/609411 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 81275 event pairs, 2290 based on Foata normal form. 39/12139 useless extension candidates. Maximal degree in co-relation 90196. Up to 10994 conditions per place. [2024-06-27 18:30:29,865 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 319 selfloop transitions, 21 changer transitions 0/370 dead transitions. [2024-06-27 18:30:29,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 370 transitions, 5414 flow [2024-06-27 18:30:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:30:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:30:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:30:29,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2024-06-27 18:30:29,866 INFO L175 Difference]: Start difference. First operand has 213 places, 334 transitions, 4363 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:30:29,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 370 transitions, 5414 flow [2024-06-27 18:30:30,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 370 transitions, 5336 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:30,668 INFO L231 Difference]: Finished difference. Result has 215 places, 344 transitions, 4494 flow [2024-06-27 18:30:30,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4291, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4494, PETRI_PLACES=215, PETRI_TRANSITIONS=344} [2024-06-27 18:30:30,669 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 159 predicate places. [2024-06-27 18:30:30,669 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 344 transitions, 4494 flow [2024-06-27 18:30:30,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:30,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:30,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:30,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:30:30,670 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:30,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1306307003, now seen corresponding path program 2 times [2024-06-27 18:30:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:30,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535311665] [2024-06-27 18:30:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:30,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:31,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:31,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535311665] [2024-06-27 18:30:31,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535311665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:31,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:31,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:30:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722462558] [2024-06-27 18:30:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:31,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:30:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:30:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:30:31,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 18:30:31,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 344 transitions, 4494 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:31,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:31,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 18:30:31,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:33,704 INFO L124 PetriNetUnfolderBase]: 7917/12485 cut-off events. [2024-06-27 18:30:33,705 INFO L125 PetriNetUnfolderBase]: For 633074/633220 co-relation queries the response was YES. [2024-06-27 18:30:33,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91881 conditions, 12485 events. 7917/12485 cut-off events. For 633074/633220 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 81076 event pairs, 2379 based on Foata normal form. 57/12144 useless extension candidates. Maximal degree in co-relation 91784. Up to 11017 conditions per place. [2024-06-27 18:30:33,848 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 319 selfloop transitions, 13 changer transitions 0/362 dead transitions. [2024-06-27 18:30:33,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 362 transitions, 5236 flow [2024-06-27 18:30:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:30:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:30:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 18:30:33,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-06-27 18:30:33,849 INFO L175 Difference]: Start difference. First operand has 215 places, 344 transitions, 4494 flow. Second operand 6 states and 141 transitions. [2024-06-27 18:30:33,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 362 transitions, 5236 flow [2024-06-27 18:30:34,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 362 transitions, 5174 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-27 18:30:34,630 INFO L231 Difference]: Finished difference. Result has 220 places, 344 transitions, 4464 flow [2024-06-27 18:30:34,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4432, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4464, PETRI_PLACES=220, PETRI_TRANSITIONS=344} [2024-06-27 18:30:34,631 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 164 predicate places. [2024-06-27 18:30:34,631 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 344 transitions, 4464 flow [2024-06-27 18:30:34,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:34,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:34,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:34,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:30:34,632 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:34,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -284665383, now seen corresponding path program 1 times [2024-06-27 18:30:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:34,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479071794] [2024-06-27 18:30:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:36,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:36,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479071794] [2024-06-27 18:30:36,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479071794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:36,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:36,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:36,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858148472] [2024-06-27 18:30:36,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:36,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:36,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:36,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:30:36,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 344 transitions, 4464 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 18:30:36,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:36,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:30:36,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:38,920 INFO L124 PetriNetUnfolderBase]: 8256/12765 cut-off events. [2024-06-27 18:30:38,921 INFO L125 PetriNetUnfolderBase]: For 644016/644016 co-relation queries the response was YES. [2024-06-27 18:30:38,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94099 conditions, 12765 events. 8256/12765 cut-off events. For 644016/644016 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 80564 event pairs, 2359 based on Foata normal form. 4/12477 useless extension candidates. Maximal degree in co-relation 93999. Up to 11471 conditions per place. [2024-06-27 18:30:39,058 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 361 selfloop transitions, 38 changer transitions 0/409 dead transitions. [2024-06-27 18:30:39,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 409 transitions, 5646 flow [2024-06-27 18:30:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 18:30:39,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482 [2024-06-27 18:30:39,059 INFO L175 Difference]: Start difference. First operand has 220 places, 344 transitions, 4464 flow. Second operand 10 states and 241 transitions. [2024-06-27 18:30:39,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 409 transitions, 5646 flow [2024-06-27 18:30:39,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 409 transitions, 5602 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:39,950 INFO L231 Difference]: Finished difference. Result has 225 places, 347 transitions, 4615 flow [2024-06-27 18:30:39,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4420, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4615, PETRI_PLACES=225, PETRI_TRANSITIONS=347} [2024-06-27 18:30:39,951 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 169 predicate places. [2024-06-27 18:30:39,951 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 347 transitions, 4615 flow [2024-06-27 18:30:39,951 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 18:30:39,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:39,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:39,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:30:39,952 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:30:39,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:39,952 INFO L85 PathProgramCache]: Analyzing trace with hash -646893316, now seen corresponding path program 1 times [2024-06-27 18:30:39,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:39,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063009316] [2024-06-27 18:30:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:39,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:40,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063009316] [2024-06-27 18:30:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063009316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:40,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:30:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823874808] [2024-06-27 18:30:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:40,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:30:40,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:40,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:30:40,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:30:40,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-27 18:30:40,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 347 transitions, 4615 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:40,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:40,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-27 18:30:40,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand