./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix032.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix032.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/mix032.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix032.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 [2024-06-28 01:32:07,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:32:07,194 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:32:07,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:32:07,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:32:07,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:32:07,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:32:07,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:32:07,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:32:07,231 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:32:07,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:32:07,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:32:07,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:32:07,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:32:07,234 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:32:07,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:32:07,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:32:07,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:32:07,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:32:07,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:32:07,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:32:07,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:32:07,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:32:07,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:32:07,236 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:32:07,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:32:07,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:32:07,237 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:32:07,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:32:07,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:32:07,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:32:07,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:32:07,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:07,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:32:07,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:32:07,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:32:07,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:32:07,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:32:07,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:32:07,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:32:07,240 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:32:07,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:32:07,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:32:07,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:32:07,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:32:07,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:32:07,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:32:07,487 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:32:07,487 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:32:07,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix032.oepc.yml/witness.yml [2024-06-28 01:32:07,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:32:07,628 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:32:07,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix032.oepc.i [2024-06-28 01:32:08,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:32:09,179 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:32:09,180 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix032.oepc.i [2024-06-28 01:32:09,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c66e4a0d/0178d4c6c67d4250b96a36cc0976e6d2/FLAGc4d50d687 [2024-06-28 01:32:09,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c66e4a0d/0178d4c6c67d4250b96a36cc0976e6d2 [2024-06-28 01:32:09,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:32:09,213 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:32:09,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:09,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:32:09,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:32:09,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:07" (1/2) ... [2024-06-28 01:32:09,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762c3ef2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:09, skipping insertion in model container [2024-06-28 01:32:09,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:07" (1/2) ... [2024-06-28 01:32:09,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39ef4293 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:09, skipping insertion in model container [2024-06-28 01:32:09,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:09" (2/2) ... [2024-06-28 01:32:09,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762c3ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09, skipping insertion in model container [2024-06-28 01:32:09,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:09" (2/2) ... [2024-06-28 01:32:09,221 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:32:09,306 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:32:09,308 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) [2024-06-28 01:32:09,309 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) [2024-06-28 01:32:09,309 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) [2024-06-28 01:32:09,310 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:32:09,310 INFO L106 edCorrectnessWitness]: ghost_update [L856-L856] multithreaded = 1; [2024-06-28 01:32:09,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:32:09,501 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/mix032.oepc.i[945,958] [2024-06-28 01:32:09,668 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:09,687 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:32:09,746 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/mix032.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:32:09,833 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:09,863 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:32:09,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09 WrapperNode [2024-06-28 01:32:09,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:09,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:09,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:32:09,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:32:09,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,926 INFO L138 Inliner]: procedures = 175, calls = 50, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 126 [2024-06-28 01:32:09,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:09,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:32:09,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:32:09,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:32:09,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,964 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]. [2024-06-28 01:32:09,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:32:09,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:32:09,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:32:09,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:32:09,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (1/1) ... [2024-06-28 01:32:09,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:09,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:32:10,074 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) [2024-06-28 01:32:10,119 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 [2024-06-28 01:32:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:32:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:32:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:32:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:32:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:32:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:32:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:32:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:32:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:32:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:32:10,152 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:32:10,305 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:32:10,309 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:32:10,607 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:32:10,607 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:32:10,725 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:32:10,725 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:32:10,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:10 BoogieIcfgContainer [2024-06-28 01:32:10,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:32:10,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:32:10,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:32:10,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:32:10,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:07" (1/4) ... [2024-06-28 01:32:10,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e77b296 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:10, skipping insertion in model container [2024-06-28 01:32:10,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:32:09" (2/4) ... [2024-06-28 01:32:10,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e77b296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:10, skipping insertion in model container [2024-06-28 01:32:10,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:09" (3/4) ... [2024-06-28 01:32:10,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e77b296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:10, skipping insertion in model container [2024-06-28 01:32:10,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:10" (4/4) ... [2024-06-28 01:32:10,733 INFO L112 eAbstractionObserver]: Analyzing ICFG mix032.oepc.i [2024-06-28 01:32:10,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:32:10,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:32:10,747 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:32:10,785 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:32:10,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:32:10,832 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-28 01:32:10,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:10,835 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 4. Compared 82 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. [2024-06-28 01:32:10,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:32:10,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-06-28 01:32:10,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:32:10,850 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;@5dcceeb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:32:10,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:32:10,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:32:10,854 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:32:10,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:10,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:10,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:10,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:10,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:10,859 INFO L85 PathProgramCache]: Analyzing trace with hash 347957649, now seen corresponding path program 1 times [2024-06-28 01:32:10,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:10,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710491963] [2024-06-28 01:32:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:10,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710491963] [2024-06-28 01:32:11,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710491963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:11,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:11,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:11,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778428755] [2024-06-28 01:32:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:11,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:11,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:11,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:32:11,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:11,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:11,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:32:11,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:12,587 INFO L124 PetriNetUnfolderBase]: 4452/7242 cut-off events. [2024-06-28 01:32:12,588 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:32:12,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13715 conditions, 7242 events. 4452/7242 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 48027 event pairs, 3409 based on Foata normal form. 217/6826 useless extension candidates. Maximal degree in co-relation 13703. Up to 6370 conditions per place. [2024-06-28 01:32:12,625 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 42 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 01:32:12,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 231 flow [2024-06-28 01:32:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-28 01:32:12,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6866666666666666 [2024-06-28 01:32:12,637 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 103 transitions. [2024-06-28 01:32:12,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 231 flow [2024-06-28 01:32:12,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:12,646 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 135 flow [2024-06-28 01:32:12,648 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} [2024-06-28 01:32:12,651 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-28 01:32:12,651 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 135 flow [2024-06-28 01:32:12,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:12,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:12,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:12,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:32:12,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:12,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash 347957972, now seen corresponding path program 1 times [2024-06-28 01:32:12,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:12,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413085421] [2024-06-28 01:32:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:12,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:12,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:12,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413085421] [2024-06-28 01:32:12,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413085421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:12,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:12,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:12,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853225445] [2024-06-28 01:32:12,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:12,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:12,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:12,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-06-28 01:32:12,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:12,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:12,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-06-28 01:32:12,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:12,989 INFO L124 PetriNetUnfolderBase]: 978/1922 cut-off events. [2024-06-28 01:32:12,990 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:32:12,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3668 conditions, 1922 events. 978/1922 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13310 event pairs, 610 based on Foata normal form. 0/1777 useless extension candidates. Maximal degree in co-relation 3656. Up to 1259 conditions per place. [2024-06-28 01:32:13,000 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 35 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-06-28 01:32:13,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 238 flow [2024-06-28 01:32:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-28 01:32:13,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-06-28 01:32:13,004 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 135 flow. Second operand 3 states and 119 transitions. [2024-06-28 01:32:13,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 238 flow [2024-06-28 01:32:13,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:13,006 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 128 flow [2024-06-28 01:32:13,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-28 01:32:13,007 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-28 01:32:13,008 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 128 flow [2024-06-28 01:32:13,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:13,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:13,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:13,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:32:13,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:13,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:13,020 INFO L85 PathProgramCache]: Analyzing trace with hash -619836003, now seen corresponding path program 1 times [2024-06-28 01:32:13,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:13,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150871925] [2024-06-28 01:32:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:13,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:13,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:13,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150871925] [2024-06-28 01:32:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150871925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:13,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:13,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:32:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144068640] [2024-06-28 01:32:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:13,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:32:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:32:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:32:13,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:32:13,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:13,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:13,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:32:13,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:14,337 INFO L124 PetriNetUnfolderBase]: 3660/5987 cut-off events. [2024-06-28 01:32:14,338 INFO L125 PetriNetUnfolderBase]: For 1501/1501 co-relation queries the response was YES. [2024-06-28 01:32:14,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12685 conditions, 5987 events. 3660/5987 cut-off events. For 1501/1501 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38371 event pairs, 2624 based on Foata normal form. 3/5769 useless extension candidates. Maximal degree in co-relation 12672. Up to 5239 conditions per place. [2024-06-28 01:32:14,370 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 50 selfloop transitions, 8 changer transitions 2/74 dead transitions. [2024-06-28 01:32:14,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 320 flow [2024-06-28 01:32:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:32:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:32:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-28 01:32:14,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-28 01:32:14,374 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 128 flow. Second operand 4 states and 128 transitions. [2024-06-28 01:32:14,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 320 flow [2024-06-28 01:32:14,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:14,378 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 189 flow [2024-06-28 01:32:14,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 01:32:14,379 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-06-28 01:32:14,379 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 189 flow [2024-06-28 01:32:14,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:14,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:14,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:14,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:32:14,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:14,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1338111132, now seen corresponding path program 1 times [2024-06-28 01:32:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:14,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772975219] [2024-06-28 01:32:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:14,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:15,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:15,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772975219] [2024-06-28 01:32:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772975219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:15,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:15,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:15,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054235974] [2024-06-28 01:32:15,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:15,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:15,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:15,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:15,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:15,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:15,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:15,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:15,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:15,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:16,106 INFO L124 PetriNetUnfolderBase]: 3811/6320 cut-off events. [2024-06-28 01:32:16,107 INFO L125 PetriNetUnfolderBase]: For 2645/2645 co-relation queries the response was YES. [2024-06-28 01:32:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14313 conditions, 6320 events. 3811/6320 cut-off events. For 2645/2645 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 41242 event pairs, 2186 based on Foata normal form. 3/6095 useless extension candidates. Maximal degree in co-relation 14298. Up to 5404 conditions per place. [2024-06-28 01:32:16,140 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 70 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-28 01:32:16,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 529 flow [2024-06-28 01:32:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-28 01:32:16,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2024-06-28 01:32:16,142 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 189 flow. Second operand 6 states and 182 transitions. [2024-06-28 01:32:16,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 529 flow [2024-06-28 01:32:16,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 512 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:16,145 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 307 flow [2024-06-28 01:32:16,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-28 01:32:16,146 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-28 01:32:16,146 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 307 flow [2024-06-28 01:32:16,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:16,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:16,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:16,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:32:16,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:16,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash -608162239, now seen corresponding path program 1 times [2024-06-28 01:32:16,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:16,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401688683] [2024-06-28 01:32:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:16,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:17,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:17,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401688683] [2024-06-28 01:32:17,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401688683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:17,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:17,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:17,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551928350] [2024-06-28 01:32:17,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:17,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:17,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:17,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:17,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:17,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:17,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:17,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:17,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:17,947 INFO L124 PetriNetUnfolderBase]: 3815/6320 cut-off events. [2024-06-28 01:32:17,947 INFO L125 PetriNetUnfolderBase]: For 5597/5597 co-relation queries the response was YES. [2024-06-28 01:32:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15956 conditions, 6320 events. 3815/6320 cut-off events. For 5597/5597 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 41144 event pairs, 1400 based on Foata normal form. 6/6057 useless extension candidates. Maximal degree in co-relation 15937. Up to 5376 conditions per place. [2024-06-28 01:32:17,983 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 87 selfloop transitions, 16 changer transitions 0/116 dead transitions. [2024-06-28 01:32:17,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 116 transitions, 668 flow [2024-06-28 01:32:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:17,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:17,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-06-28 01:32:17,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2024-06-28 01:32:17,985 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 307 flow. Second operand 7 states and 206 transitions. [2024-06-28 01:32:17,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 116 transitions, 668 flow [2024-06-28 01:32:17,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 116 transitions, 637 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:17,990 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 372 flow [2024-06-28 01:32:17,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-06-28 01:32:17,991 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2024-06-28 01:32:17,991 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 372 flow [2024-06-28 01:32:17,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:17,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:17,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:17,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:32:17,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:17,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1789074477, now seen corresponding path program 1 times [2024-06-28 01:32:17,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485112401] [2024-06-28 01:32:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:17,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:18,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485112401] [2024-06-28 01:32:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485112401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:18,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:18,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:18,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965063549] [2024-06-28 01:32:18,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:18,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:18,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:18,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:18,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:18,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:18,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 372 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) [2024-06-28 01:32:18,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:18,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:18,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:19,599 INFO L124 PetriNetUnfolderBase]: 4446/7274 cut-off events. [2024-06-28 01:32:19,600 INFO L125 PetriNetUnfolderBase]: For 9099/9099 co-relation queries the response was YES. [2024-06-28 01:32:19,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19159 conditions, 7274 events. 4446/7274 cut-off events. For 9099/9099 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 47384 event pairs, 2020 based on Foata normal form. 2/7029 useless extension candidates. Maximal degree in co-relation 19135. Up to 6340 conditions per place. [2024-06-28 01:32:19,647 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 69 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-28 01:32:19,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 592 flow [2024-06-28 01:32:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-28 01:32:19,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-06-28 01:32:19,649 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 372 flow. Second operand 5 states and 129 transitions. [2024-06-28 01:32:19,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 592 flow [2024-06-28 01:32:19,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 557 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:19,657 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 390 flow [2024-06-28 01:32:19,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-06-28 01:32:19,660 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-06-28 01:32:19,660 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 390 flow [2024-06-28 01:32:19,660 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) [2024-06-28 01:32:19,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:19,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:19,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:32:19,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:19,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash 373267212, now seen corresponding path program 1 times [2024-06-28 01:32:19,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:19,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411092752] [2024-06-28 01:32:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:19,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:20,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:20,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411092752] [2024-06-28 01:32:20,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411092752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:20,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:20,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:20,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20848948] [2024-06-28 01:32:20,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:20,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:20,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:20,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:20,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 390 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) [2024-06-28 01:32:20,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:20,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:20,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:21,681 INFO L124 PetriNetUnfolderBase]: 5234/8533 cut-off events. [2024-06-28 01:32:21,682 INFO L125 PetriNetUnfolderBase]: For 13283/13283 co-relation queries the response was YES. [2024-06-28 01:32:21,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23299 conditions, 8533 events. 5234/8533 cut-off events. For 13283/13283 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 55887 event pairs, 2408 based on Foata normal form. 2/8317 useless extension candidates. Maximal degree in co-relation 23273. Up to 7427 conditions per place. [2024-06-28 01:32:21,736 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 78 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-28 01:32:21,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 658 flow [2024-06-28 01:32:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 01:32:21,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2024-06-28 01:32:21,738 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 390 flow. Second operand 6 states and 149 transitions. [2024-06-28 01:32:21,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 658 flow [2024-06-28 01:32:21,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 102 transitions, 631 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:21,746 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 425 flow [2024-06-28 01:32:21,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=425, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2024-06-28 01:32:21,747 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-28 01:32:21,747 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 425 flow [2024-06-28 01:32:21,748 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) [2024-06-28 01:32:21,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:21,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:21,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:32:21,748 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:21,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1320262511, now seen corresponding path program 1 times [2024-06-28 01:32:21,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:21,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384928877] [2024-06-28 01:32:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:21,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:22,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:22,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384928877] [2024-06-28 01:32:22,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384928877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:22,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:22,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:22,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918060465] [2024-06-28 01:32:22,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:22,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:22,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:22,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:22,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:22,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:22,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:22,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:23,500 INFO L124 PetriNetUnfolderBase]: 4972/8228 cut-off events. [2024-06-28 01:32:23,500 INFO L125 PetriNetUnfolderBase]: For 17278/17282 co-relation queries the response was YES. [2024-06-28 01:32:23,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23708 conditions, 8228 events. 4972/8228 cut-off events. For 17278/17282 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 54539 event pairs, 1934 based on Foata normal form. 6/7979 useless extension candidates. Maximal degree in co-relation 23681. Up to 7048 conditions per place. [2024-06-28 01:32:23,566 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 86 selfloop transitions, 18 changer transitions 0/116 dead transitions. [2024-06-28 01:32:23,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 798 flow [2024-06-28 01:32:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 01:32:23,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 01:32:23,569 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 425 flow. Second operand 6 states and 160 transitions. [2024-06-28 01:32:23,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 798 flow [2024-06-28 01:32:23,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 116 transitions, 755 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:23,580 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 515 flow [2024-06-28 01:32:23,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=515, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-06-28 01:32:23,582 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-06-28 01:32:23,582 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 515 flow [2024-06-28 01:32:23,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:23,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:23,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:32:23,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:23,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:23,584 INFO L85 PathProgramCache]: Analyzing trace with hash -569148941, now seen corresponding path program 2 times [2024-06-28 01:32:23,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:23,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549408475] [2024-06-28 01:32:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:23,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:24,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:24,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549408475] [2024-06-28 01:32:24,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549408475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:24,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:24,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:24,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459975055] [2024-06-28 01:32:24,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:24,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:24,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:24,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:24,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:24,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:24,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:24,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:24,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:24,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:25,308 INFO L124 PetriNetUnfolderBase]: 4976/8260 cut-off events. [2024-06-28 01:32:25,309 INFO L125 PetriNetUnfolderBase]: For 22510/22510 co-relation queries the response was YES. [2024-06-28 01:32:25,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25311 conditions, 8260 events. 4976/8260 cut-off events. For 22510/22510 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 55440 event pairs, 2172 based on Foata normal form. 2/8031 useless extension candidates. Maximal degree in co-relation 25282. Up to 7100 conditions per place. [2024-06-28 01:32:25,361 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 84 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2024-06-28 01:32:25,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 767 flow [2024-06-28 01:32:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:32:25,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-28 01:32:25,363 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 515 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:32:25,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 767 flow [2024-06-28 01:32:25,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 109 transitions, 739 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:25,377 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 521 flow [2024-06-28 01:32:25,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=521, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2024-06-28 01:32:25,378 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-28 01:32:25,378 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 521 flow [2024-06-28 01:32:25,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:25,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:25,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:25,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:32:25,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:25,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1313617134, now seen corresponding path program 1 times [2024-06-28 01:32:25,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:25,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715970802] [2024-06-28 01:32:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:25,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:26,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:26,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715970802] [2024-06-28 01:32:26,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715970802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:26,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:26,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:26,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850559773] [2024-06-28 01:32:26,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:26,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:26,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:26,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:26,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:26,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:26,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 521 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) [2024-06-28 01:32:26,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:26,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:26,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:27,541 INFO L124 PetriNetUnfolderBase]: 5247/8533 cut-off events. [2024-06-28 01:32:27,542 INFO L125 PetriNetUnfolderBase]: For 24772/24772 co-relation queries the response was YES. [2024-06-28 01:32:27,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26423 conditions, 8533 events. 5247/8533 cut-off events. For 24772/24772 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 55769 event pairs, 2266 based on Foata normal form. 4/8313 useless extension candidates. Maximal degree in co-relation 26391. Up to 7411 conditions per place. [2024-06-28 01:32:27,588 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 93 selfloop transitions, 20 changer transitions 0/123 dead transitions. [2024-06-28 01:32:27,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 123 transitions, 859 flow [2024-06-28 01:32:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:32:27,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-06-28 01:32:27,590 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 521 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:32:27,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 123 transitions, 859 flow [2024-06-28 01:32:27,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 818 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:27,603 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 560 flow [2024-06-28 01:32:27,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2024-06-28 01:32:27,604 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-28 01:32:27,605 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 560 flow [2024-06-28 01:32:27,605 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) [2024-06-28 01:32:27,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:27,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:32:27,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:27,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash -692719532, now seen corresponding path program 1 times [2024-06-28 01:32:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:27,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492584603] [2024-06-28 01:32:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:27,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:28,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492584603] [2024-06-28 01:32:28,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492584603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:28,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:28,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:28,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544369284] [2024-06-28 01:32:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:28,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:28,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:28,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:28,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:28,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:28,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:28,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:28,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:28,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:29,757 INFO L124 PetriNetUnfolderBase]: 4980/8212 cut-off events. [2024-06-28 01:32:29,757 INFO L125 PetriNetUnfolderBase]: For 29665/29669 co-relation queries the response was YES. [2024-06-28 01:32:29,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26811 conditions, 8212 events. 4980/8212 cut-off events. For 29665/29669 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 54212 event pairs, 1833 based on Foata normal form. 6/7959 useless extension candidates. Maximal degree in co-relation 26779. Up to 7066 conditions per place. [2024-06-28 01:32:29,820 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 104 selfloop transitions, 15 changer transitions 0/131 dead transitions. [2024-06-28 01:32:29,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 131 transitions, 932 flow [2024-06-28 01:32:29,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:32:29,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-06-28 01:32:29,822 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 560 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:32:29,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 131 transitions, 932 flow [2024-06-28 01:32:29,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 876 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:29,838 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 578 flow [2024-06-28 01:32:29,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-06-28 01:32:29,839 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-28 01:32:29,839 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 578 flow [2024-06-28 01:32:29,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:29,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:29,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:29,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:32:29,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:29,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:29,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1071520086, now seen corresponding path program 1 times [2024-06-28 01:32:29,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:29,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883528787] [2024-06-28 01:32:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:29,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883528787] [2024-06-28 01:32:30,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883528787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:30,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:30,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:30,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385776284] [2024-06-28 01:32:30,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:30,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:30,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:30,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:30,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:30,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:30,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 578 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) [2024-06-28 01:32:30,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:30,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:30,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:31,723 INFO L124 PetriNetUnfolderBase]: 5298/8565 cut-off events. [2024-06-28 01:32:31,723 INFO L125 PetriNetUnfolderBase]: For 35626/35632 co-relation queries the response was YES. [2024-06-28 01:32:31,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29023 conditions, 8565 events. 5298/8565 cut-off events. For 35626/35632 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 55105 event pairs, 1995 based on Foata normal form. 4/8309 useless extension candidates. Maximal degree in co-relation 28990. Up to 7430 conditions per place. [2024-06-28 01:32:31,784 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 104 selfloop transitions, 26 changer transitions 0/140 dead transitions. [2024-06-28 01:32:31,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 140 transitions, 1058 flow [2024-06-28 01:32:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 01:32:31,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2024-06-28 01:32:31,786 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 578 flow. Second operand 7 states and 181 transitions. [2024-06-28 01:32:31,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 140 transitions, 1058 flow [2024-06-28 01:32:31,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 140 transitions, 1008 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:31,882 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 693 flow [2024-06-28 01:32:31,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=693, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-06-28 01:32:31,883 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-28 01:32:31,883 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 693 flow [2024-06-28 01:32:31,883 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) [2024-06-28 01:32:31,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:31,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:31,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:32:31,884 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:31,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2021536084, now seen corresponding path program 2 times [2024-06-28 01:32:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:31,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351804949] [2024-06-28 01:32:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:32,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:32,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351804949] [2024-06-28 01:32:32,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351804949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:32,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:32,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:32,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647263642] [2024-06-28 01:32:32,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:32,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:32,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:32,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 693 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:32,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:32,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:32,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:33,727 INFO L124 PetriNetUnfolderBase]: 5047/8370 cut-off events. [2024-06-28 01:32:33,727 INFO L125 PetriNetUnfolderBase]: For 42612/42626 co-relation queries the response was YES. [2024-06-28 01:32:33,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29718 conditions, 8370 events. 5047/8370 cut-off events. For 42612/42626 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 55766 event pairs, 1831 based on Foata normal form. 6/8117 useless extension candidates. Maximal degree in co-relation 29683. Up to 7063 conditions per place. [2024-06-28 01:32:33,778 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 103 selfloop transitions, 28 changer transitions 0/146 dead transitions. [2024-06-28 01:32:33,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 146 transitions, 1181 flow [2024-06-28 01:32:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 01:32:33,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342857142857143 [2024-06-28 01:32:33,782 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 693 flow. Second operand 7 states and 187 transitions. [2024-06-28 01:32:33,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 146 transitions, 1181 flow [2024-06-28 01:32:33,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 146 transitions, 1151 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:33,811 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 809 flow [2024-06-28 01:32:33,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=809, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2024-06-28 01:32:33,813 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-06-28 01:32:33,813 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 809 flow [2024-06-28 01:32:33,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:33,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:33,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:32:33,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:33,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash -463746836, now seen corresponding path program 2 times [2024-06-28 01:32:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:33,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62725778] [2024-06-28 01:32:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:34,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62725778] [2024-06-28 01:32:34,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62725778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:34,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:34,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:34,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466889281] [2024-06-28 01:32:34,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:34,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:34,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:34,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:34,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:34,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 809 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) [2024-06-28 01:32:34,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:34,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:34,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:35,846 INFO L124 PetriNetUnfolderBase]: 5349/8733 cut-off events. [2024-06-28 01:32:35,846 INFO L125 PetriNetUnfolderBase]: For 51418/51418 co-relation queries the response was YES. [2024-06-28 01:32:35,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32353 conditions, 8733 events. 5349/8733 cut-off events. For 51418/51418 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 57449 event pairs, 2235 based on Foata normal form. 2/8507 useless extension candidates. Maximal degree in co-relation 32315. Up to 7548 conditions per place. [2024-06-28 01:32:35,900 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 112 selfloop transitions, 22 changer transitions 0/144 dead transitions. [2024-06-28 01:32:35,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 144 transitions, 1249 flow [2024-06-28 01:32:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:32:35,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:35,903 INFO L175 Difference]: Start difference. First operand has 97 places, 108 transitions, 809 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:32:35,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 144 transitions, 1249 flow [2024-06-28 01:32:35,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 144 transitions, 1199 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:35,938 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 847 flow [2024-06-28 01:32:35,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=847, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2024-06-28 01:32:35,939 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-06-28 01:32:35,939 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 847 flow [2024-06-28 01:32:35,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:35,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:35,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:35,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:32:35,939 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:35,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:35,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1211799032, now seen corresponding path program 3 times [2024-06-28 01:32:35,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:35,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048782610] [2024-06-28 01:32:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:36,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:36,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048782610] [2024-06-28 01:32:36,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048782610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:36,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:36,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:36,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933222280] [2024-06-28 01:32:36,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:36,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:36,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:37,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:37,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 847 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:37,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:37,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:37,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:38,031 INFO L124 PetriNetUnfolderBase]: 5071/8433 cut-off events. [2024-06-28 01:32:38,032 INFO L125 PetriNetUnfolderBase]: For 54936/54952 co-relation queries the response was YES. [2024-06-28 01:32:38,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31536 conditions, 8433 events. 5071/8433 cut-off events. For 54936/54952 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 56865 event pairs, 2073 based on Foata normal form. 2/8199 useless extension candidates. Maximal degree in co-relation 31496. Up to 7195 conditions per place. [2024-06-28 01:32:38,086 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 110 selfloop transitions, 16 changer transitions 0/142 dead transitions. [2024-06-28 01:32:38,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 142 transitions, 1183 flow [2024-06-28 01:32:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:32:38,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-28 01:32:38,089 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 847 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:32:38,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 142 transitions, 1183 flow [2024-06-28 01:32:38,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 142 transitions, 1086 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:38,131 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 790 flow [2024-06-28 01:32:38,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=790, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2024-06-28 01:32:38,132 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-28 01:32:38,132 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 790 flow [2024-06-28 01:32:38,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:38,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:38,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:38,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:32:38,133 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:38,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2067434166, now seen corresponding path program 3 times [2024-06-28 01:32:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480435044] [2024-06-28 01:32:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:38,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:38,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480435044] [2024-06-28 01:32:38,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480435044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:38,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:38,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:38,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543683499] [2024-06-28 01:32:38,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:38,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:38,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:38,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:38,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:39,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:39,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 790 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) [2024-06-28 01:32:39,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:39,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:39,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:40,079 INFO L124 PetriNetUnfolderBase]: 5339/8749 cut-off events. [2024-06-28 01:32:40,080 INFO L125 PetriNetUnfolderBase]: For 59351/59351 co-relation queries the response was YES. [2024-06-28 01:32:40,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32733 conditions, 8749 events. 5339/8749 cut-off events. For 59351/59351 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 57801 event pairs, 3087 based on Foata normal form. 2/8510 useless extension candidates. Maximal degree in co-relation 32693. Up to 7568 conditions per place. [2024-06-28 01:32:40,146 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 112 selfloop transitions, 19 changer transitions 0/141 dead transitions. [2024-06-28 01:32:40,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 141 transitions, 1142 flow [2024-06-28 01:32:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:32:40,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-28 01:32:40,148 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 790 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:32:40,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 141 transitions, 1142 flow [2024-06-28 01:32:40,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 141 transitions, 1069 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:40,204 INFO L231 Difference]: Finished difference. Result has 106 places, 113 transitions, 786 flow [2024-06-28 01:32:40,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=786, PETRI_PLACES=106, PETRI_TRANSITIONS=113} [2024-06-28 01:32:40,204 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-28 01:32:40,204 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 113 transitions, 786 flow [2024-06-28 01:32:40,205 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) [2024-06-28 01:32:40,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:40,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:40,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:32:40,205 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:40,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1582960103, now seen corresponding path program 1 times [2024-06-28 01:32:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378593899] [2024-06-28 01:32:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:40,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:40,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378593899] [2024-06-28 01:32:40,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378593899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:40,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:40,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:40,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563365042] [2024-06-28 01:32:40,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:40,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:40,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:40,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:40,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:40,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:40,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 113 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:40,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:40,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:40,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:42,001 INFO L124 PetriNetUnfolderBase]: 5514/9292 cut-off events. [2024-06-28 01:32:42,001 INFO L125 PetriNetUnfolderBase]: For 73128/73164 co-relation queries the response was YES. [2024-06-28 01:32:42,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34277 conditions, 9292 events. 5514/9292 cut-off events. For 73128/73164 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 64673 event pairs, 3473 based on Foata normal form. 2/9018 useless extension candidates. Maximal degree in co-relation 34235. Up to 7934 conditions per place. [2024-06-28 01:32:42,059 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 95 selfloop transitions, 12 changer transitions 0/130 dead transitions. [2024-06-28 01:32:42,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 130 transitions, 1060 flow [2024-06-28 01:32:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:42,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 01:32:42,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:42,061 INFO L175 Difference]: Start difference. First operand has 106 places, 113 transitions, 786 flow. Second operand 5 states and 125 transitions. [2024-06-28 01:32:42,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 130 transitions, 1060 flow [2024-06-28 01:32:42,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 1011 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:42,111 INFO L231 Difference]: Finished difference. Result has 105 places, 116 transitions, 796 flow [2024-06-28 01:32:42,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=796, PETRI_PLACES=105, PETRI_TRANSITIONS=116} [2024-06-28 01:32:42,112 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-28 01:32:42,112 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 116 transitions, 796 flow [2024-06-28 01:32:42,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:42,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:42,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:42,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:32:42,113 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:42,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:42,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1003686680, now seen corresponding path program 1 times [2024-06-28 01:32:42,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:42,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416449650] [2024-06-28 01:32:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:42,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:42,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416449650] [2024-06-28 01:32:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416449650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:42,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:42,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:42,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480650563] [2024-06-28 01:32:42,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:42,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:42,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:42,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:42,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:42,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:42,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 116 transitions, 796 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:42,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:42,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:42,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:44,414 INFO L124 PetriNetUnfolderBase]: 5249/8704 cut-off events. [2024-06-28 01:32:44,415 INFO L125 PetriNetUnfolderBase]: For 70815/70843 co-relation queries the response was YES. [2024-06-28 01:32:44,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34302 conditions, 8704 events. 5249/8704 cut-off events. For 70815/70843 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 58317 event pairs, 2233 based on Foata normal form. 6/8479 useless extension candidates. Maximal degree in co-relation 34259. Up to 7267 conditions per place. [2024-06-28 01:32:44,478 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 137 selfloop transitions, 50 changer transitions 0/203 dead transitions. [2024-06-28 01:32:44,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 203 transitions, 1661 flow [2024-06-28 01:32:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:44,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-28 01:32:44,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534 [2024-06-28 01:32:44,480 INFO L175 Difference]: Start difference. First operand has 105 places, 116 transitions, 796 flow. Second operand 10 states and 267 transitions. [2024-06-28 01:32:44,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 203 transitions, 1661 flow [2024-06-28 01:32:44,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 203 transitions, 1626 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:44,525 INFO L231 Difference]: Finished difference. Result has 114 places, 139 transitions, 1100 flow [2024-06-28 01:32:44,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1100, PETRI_PLACES=114, PETRI_TRANSITIONS=139} [2024-06-28 01:32:44,525 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-28 01:32:44,526 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 139 transitions, 1100 flow [2024-06-28 01:32:44,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:44,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:44,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:44,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:32:44,526 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:44,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1349945926, now seen corresponding path program 2 times [2024-06-28 01:32:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:44,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535474776] [2024-06-28 01:32:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:45,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:45,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535474776] [2024-06-28 01:32:45,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535474776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:45,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:45,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:45,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625142447] [2024-06-28 01:32:45,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:45,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:45,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:45,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:45,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 139 transitions, 1100 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:45,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:45,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:45,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:47,279 INFO L124 PetriNetUnfolderBase]: 5550/9135 cut-off events. [2024-06-28 01:32:47,279 INFO L125 PetriNetUnfolderBase]: For 86856/86890 co-relation queries the response was YES. [2024-06-28 01:32:47,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38840 conditions, 9135 events. 5550/9135 cut-off events. For 86856/86890 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 61061 event pairs, 2632 based on Foata normal form. 7/8879 useless extension candidates. Maximal degree in co-relation 38794. Up to 7671 conditions per place. [2024-06-28 01:32:47,350 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 176 selfloop transitions, 52 changer transitions 0/244 dead transitions. [2024-06-28 01:32:47,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 244 transitions, 2264 flow [2024-06-28 01:32:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-28 01:32:47,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:32:47,354 INFO L175 Difference]: Start difference. First operand has 114 places, 139 transitions, 1100 flow. Second operand 10 states and 260 transitions. [2024-06-28 01:32:47,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 244 transitions, 2264 flow [2024-06-28 01:32:47,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 244 transitions, 2155 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:47,434 INFO L231 Difference]: Finished difference. Result has 125 places, 182 transitions, 1686 flow [2024-06-28 01:32:47,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1686, PETRI_PLACES=125, PETRI_TRANSITIONS=182} [2024-06-28 01:32:47,435 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-28 01:32:47,435 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 182 transitions, 1686 flow [2024-06-28 01:32:47,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:47,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:47,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:32:47,436 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:47,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:47,436 INFO L85 PathProgramCache]: Analyzing trace with hash 761684689, now seen corresponding path program 1 times [2024-06-28 01:32:47,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:47,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6116060] [2024-06-28 01:32:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:48,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:48,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6116060] [2024-06-28 01:32:48,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6116060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:48,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:48,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:48,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899194777] [2024-06-28 01:32:48,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:48,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:48,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:48,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:48,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:48,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:48,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 182 transitions, 1686 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) [2024-06-28 01:32:48,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:48,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:48,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:49,872 INFO L124 PetriNetUnfolderBase]: 5804/9452 cut-off events. [2024-06-28 01:32:49,873 INFO L125 PetriNetUnfolderBase]: For 94623/94625 co-relation queries the response was YES. [2024-06-28 01:32:49,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41687 conditions, 9452 events. 5804/9452 cut-off events. For 94623/94625 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 62167 event pairs, 2767 based on Foata normal form. 4/9222 useless extension candidates. Maximal degree in co-relation 41635. Up to 8045 conditions per place. [2024-06-28 01:32:49,955 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 207 selfloop transitions, 62 changer transitions 0/279 dead transitions. [2024-06-28 01:32:49,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 279 transitions, 2986 flow [2024-06-28 01:32:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-28 01:32:49,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:49,957 INFO L175 Difference]: Start difference. First operand has 125 places, 182 transitions, 1686 flow. Second operand 11 states and 275 transitions. [2024-06-28 01:32:49,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 279 transitions, 2986 flow [2024-06-28 01:32:50,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 279 transitions, 2904 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:50,047 INFO L231 Difference]: Finished difference. Result has 137 places, 217 transitions, 2215 flow [2024-06-28 01:32:50,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2215, PETRI_PLACES=137, PETRI_TRANSITIONS=217} [2024-06-28 01:32:50,048 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-28 01:32:50,048 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 217 transitions, 2215 flow [2024-06-28 01:32:50,048 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) [2024-06-28 01:32:50,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:50,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:50,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:32:50,049 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:50,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1350036291, now seen corresponding path program 2 times [2024-06-28 01:32:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:50,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754582715] [2024-06-28 01:32:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:50,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:50,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754582715] [2024-06-28 01:32:50,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754582715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:50,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:50,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:50,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172572748] [2024-06-28 01:32:50,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:50,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:50,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:51,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:51,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 217 transitions, 2215 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) [2024-06-28 01:32:51,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:51,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:51,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:52,583 INFO L124 PetriNetUnfolderBase]: 5865/9554 cut-off events. [2024-06-28 01:32:52,583 INFO L125 PetriNetUnfolderBase]: For 113440/113446 co-relation queries the response was YES. [2024-06-28 01:32:52,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45175 conditions, 9554 events. 5865/9554 cut-off events. For 113440/113446 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 62831 event pairs, 2738 based on Foata normal form. 9/9327 useless extension candidates. Maximal degree in co-relation 45118. Up to 8179 conditions per place. [2024-06-28 01:32:52,687 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 209 selfloop transitions, 61 changer transitions 0/280 dead transitions. [2024-06-28 01:32:52,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 280 transitions, 3239 flow [2024-06-28 01:32:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:32:52,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022222222222222 [2024-06-28 01:32:52,697 INFO L175 Difference]: Start difference. First operand has 137 places, 217 transitions, 2215 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:32:52,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 280 transitions, 3239 flow [2024-06-28 01:32:52,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 280 transitions, 3067 flow, removed 82 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:52,819 INFO L231 Difference]: Finished difference. Result has 144 places, 229 transitions, 2430 flow [2024-06-28 01:32:52,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2123, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2430, PETRI_PLACES=144, PETRI_TRANSITIONS=229} [2024-06-28 01:32:52,820 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2024-06-28 01:32:52,820 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 229 transitions, 2430 flow [2024-06-28 01:32:52,820 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) [2024-06-28 01:32:52,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:52,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:52,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:32:52,820 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:52,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1353761158, now seen corresponding path program 1 times [2024-06-28 01:32:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522978646] [2024-06-28 01:32:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:53,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:53,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522978646] [2024-06-28 01:32:53,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522978646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:53,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:53,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:53,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870529333] [2024-06-28 01:32:53,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:53,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:53,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:53,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:53,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:53,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:53,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 229 transitions, 2430 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) [2024-06-28 01:32:53,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:53,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:53,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:55,355 INFO L124 PetriNetUnfolderBase]: 6096/9947 cut-off events. [2024-06-28 01:32:55,355 INFO L125 PetriNetUnfolderBase]: For 128772/128782 co-relation queries the response was YES. [2024-06-28 01:32:55,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48194 conditions, 9947 events. 6096/9947 cut-off events. For 128772/128782 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 65791 event pairs, 2727 based on Foata normal form. 11/9709 useless extension candidates. Maximal degree in co-relation 48135. Up to 8334 conditions per place. [2024-06-28 01:32:55,463 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 257 selfloop transitions, 66 changer transitions 0/333 dead transitions. [2024-06-28 01:32:55,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 333 transitions, 3858 flow [2024-06-28 01:32:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:32:55,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-28 01:32:55,464 INFO L175 Difference]: Start difference. First operand has 144 places, 229 transitions, 2430 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:32:55,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 333 transitions, 3858 flow [2024-06-28 01:32:55,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 333 transitions, 3663 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:55,616 INFO L231 Difference]: Finished difference. Result has 150 places, 271 transitions, 2816 flow [2024-06-28 01:32:55,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2816, PETRI_PLACES=150, PETRI_TRANSITIONS=271} [2024-06-28 01:32:55,617 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-06-28 01:32:55,617 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 271 transitions, 2816 flow [2024-06-28 01:32:55,617 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) [2024-06-28 01:32:55,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:55,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:55,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:32:55,618 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:55,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:55,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1353760941, now seen corresponding path program 3 times [2024-06-28 01:32:55,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:55,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654846945] [2024-06-28 01:32:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:55,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654846945] [2024-06-28 01:32:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654846945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:56,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919734099] [2024-06-28 01:32:56,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:56,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:56,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:56,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 271 transitions, 2816 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) [2024-06-28 01:32:56,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:56,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:56,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:58,324 INFO L124 PetriNetUnfolderBase]: 6230/10119 cut-off events. [2024-06-28 01:32:58,325 INFO L125 PetriNetUnfolderBase]: For 149440/149454 co-relation queries the response was YES. [2024-06-28 01:32:58,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52505 conditions, 10119 events. 6230/10119 cut-off events. For 149440/149454 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 66537 event pairs, 2635 based on Foata normal form. 13/9884 useless extension candidates. Maximal degree in co-relation 52441. Up to 8241 conditions per place. [2024-06-28 01:32:58,425 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 229 selfloop transitions, 134 changer transitions 0/373 dead transitions. [2024-06-28 01:32:58,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 373 transitions, 4550 flow [2024-06-28 01:32:58,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:32:58,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-28 01:32:58,427 INFO L175 Difference]: Start difference. First operand has 150 places, 271 transitions, 2816 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:32:58,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 373 transitions, 4550 flow [2024-06-28 01:32:58,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 373 transitions, 4456 flow, removed 46 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:58,590 INFO L231 Difference]: Finished difference. Result has 160 places, 311 transitions, 3550 flow [2024-06-28 01:32:58,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3550, PETRI_PLACES=160, PETRI_TRANSITIONS=311} [2024-06-28 01:32:58,590 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 104 predicate places. [2024-06-28 01:32:58,591 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 311 transitions, 3550 flow [2024-06-28 01:32:58,591 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) [2024-06-28 01:32:58,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:58,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:32:58,591 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:58,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash -701826912, now seen corresponding path program 3 times [2024-06-28 01:32:58,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745451075] [2024-06-28 01:32:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:59,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745451075] [2024-06-28 01:32:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745451075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:59,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:59,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:59,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679988261] [2024-06-28 01:32:59,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:59,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:59,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:59,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:59,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:59,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:59,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 311 transitions, 3550 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:59,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:59,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:59,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:01,618 INFO L124 PetriNetUnfolderBase]: 6052/9949 cut-off events. [2024-06-28 01:33:01,618 INFO L125 PetriNetUnfolderBase]: For 171417/171572 co-relation queries the response was YES. [2024-06-28 01:33:01,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54070 conditions, 9949 events. 6052/9949 cut-off events. For 171417/171572 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 66909 event pairs, 2555 based on Foata normal form. 24/9686 useless extension candidates. Maximal degree in co-relation 54001. Up to 8194 conditions per place. [2024-06-28 01:33:01,723 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 249 selfloop transitions, 95 changer transitions 0/378 dead transitions. [2024-06-28 01:33:01,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 378 transitions, 4772 flow [2024-06-28 01:33:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:33:01,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-28 01:33:01,724 INFO L175 Difference]: Start difference. First operand has 160 places, 311 transitions, 3550 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:33:01,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 378 transitions, 4772 flow [2024-06-28 01:33:01,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 378 transitions, 4670 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:01,881 INFO L231 Difference]: Finished difference. Result has 167 places, 330 transitions, 3927 flow [2024-06-28 01:33:01,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3927, PETRI_PLACES=167, PETRI_TRANSITIONS=330} [2024-06-28 01:33:01,882 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 111 predicate places. [2024-06-28 01:33:01,882 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 330 transitions, 3927 flow [2024-06-28 01:33:01,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:01,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:01,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:33:01,883 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:01,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1353755361, now seen corresponding path program 4 times [2024-06-28 01:33:01,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:01,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901652955] [2024-06-28 01:33:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:01,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:02,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:02,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901652955] [2024-06-28 01:33:02,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901652955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:02,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:02,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:02,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809089755] [2024-06-28 01:33:02,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:02,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:02,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:02,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:02,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:02,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:02,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 330 transitions, 3927 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) [2024-06-28 01:33:02,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:02,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:02,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:04,659 INFO L124 PetriNetUnfolderBase]: 6248/10152 cut-off events. [2024-06-28 01:33:04,659 INFO L125 PetriNetUnfolderBase]: For 182077/182091 co-relation queries the response was YES. [2024-06-28 01:33:04,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56843 conditions, 10152 events. 6248/10152 cut-off events. For 182077/182091 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 66856 event pairs, 2635 based on Foata normal form. 13/9915 useless extension candidates. Maximal degree in co-relation 56772. Up to 8268 conditions per place. [2024-06-28 01:33:04,756 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 233 selfloop transitions, 137 changer transitions 0/380 dead transitions. [2024-06-28 01:33:04,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 380 transitions, 5121 flow [2024-06-28 01:33:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:33:04,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-28 01:33:04,757 INFO L175 Difference]: Start difference. First operand has 167 places, 330 transitions, 3927 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:33:04,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 380 transitions, 5121 flow [2024-06-28 01:33:04,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 380 transitions, 4942 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:04,951 INFO L231 Difference]: Finished difference. Result has 170 places, 330 transitions, 4030 flow [2024-06-28 01:33:04,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4030, PETRI_PLACES=170, PETRI_TRANSITIONS=330} [2024-06-28 01:33:04,952 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 114 predicate places. [2024-06-28 01:33:04,952 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 330 transitions, 4030 flow [2024-06-28 01:33:04,952 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) [2024-06-28 01:33:04,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:04,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:04,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:33:04,953 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:04,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1138801652, now seen corresponding path program 4 times [2024-06-28 01:33:04,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:04,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804292369] [2024-06-28 01:33:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:04,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804292369] [2024-06-28 01:33:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804292369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:06,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:06,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163559283] [2024-06-28 01:33:06,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:06,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:06,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:06,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:06,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 330 transitions, 4030 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:06,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:06,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:06,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:08,062 INFO L124 PetriNetUnfolderBase]: 6203/10163 cut-off events. [2024-06-28 01:33:08,062 INFO L125 PetriNetUnfolderBase]: For 198098/198286 co-relation queries the response was YES. [2024-06-28 01:33:08,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57550 conditions, 10163 events. 6203/10163 cut-off events. For 198098/198286 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 68369 event pairs, 2574 based on Foata normal form. 9/9871 useless extension candidates. Maximal degree in co-relation 57479. Up to 8296 conditions per place. [2024-06-28 01:33:08,183 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 254 selfloop transitions, 122 changer transitions 0/410 dead transitions. [2024-06-28 01:33:08,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 410 transitions, 5490 flow [2024-06-28 01:33:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 01:33:08,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355555555555556 [2024-06-28 01:33:08,185 INFO L175 Difference]: Start difference. First operand has 170 places, 330 transitions, 4030 flow. Second operand 9 states and 241 transitions. [2024-06-28 01:33:08,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 410 transitions, 5490 flow [2024-06-28 01:33:08,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 410 transitions, 5175 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:08,401 INFO L231 Difference]: Finished difference. Result has 172 places, 351 transitions, 4258 flow [2024-06-28 01:33:08,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4258, PETRI_PLACES=172, PETRI_TRANSITIONS=351} [2024-06-28 01:33:08,402 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 116 predicate places. [2024-06-28 01:33:08,402 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 351 transitions, 4258 flow [2024-06-28 01:33:08,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:08,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:08,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:33:08,403 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:08,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1098546757, now seen corresponding path program 1 times [2024-06-28 01:33:08,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:08,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289550565] [2024-06-28 01:33:08,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:08,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:09,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:09,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289550565] [2024-06-28 01:33:09,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289550565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:09,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:09,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:09,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381194353] [2024-06-28 01:33:09,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:09,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:09,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:09,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:09,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:09,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:09,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 351 transitions, 4258 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) [2024-06-28 01:33:09,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:09,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:09,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:11,381 INFO L124 PetriNetUnfolderBase]: 6420/10455 cut-off events. [2024-06-28 01:33:11,382 INFO L125 PetriNetUnfolderBase]: For 202806/202812 co-relation queries the response was YES. [2024-06-28 01:33:11,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59888 conditions, 10455 events. 6420/10455 cut-off events. For 202806/202812 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 69286 event pairs, 2657 based on Foata normal form. 10/10204 useless extension candidates. Maximal degree in co-relation 59815. Up to 8897 conditions per place. [2024-06-28 01:33:11,469 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 335 selfloop transitions, 64 changer transitions 0/409 dead transitions. [2024-06-28 01:33:11,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 409 transitions, 5465 flow [2024-06-28 01:33:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:11,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-28 01:33:11,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502 [2024-06-28 01:33:11,470 INFO L175 Difference]: Start difference. First operand has 172 places, 351 transitions, 4258 flow. Second operand 10 states and 251 transitions. [2024-06-28 01:33:11,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 409 transitions, 5465 flow [2024-06-28 01:33:11,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 409 transitions, 5234 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:11,686 INFO L231 Difference]: Finished difference. Result has 177 places, 354 transitions, 4232 flow [2024-06-28 01:33:11,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4232, PETRI_PLACES=177, PETRI_TRANSITIONS=354} [2024-06-28 01:33:11,687 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 121 predicate places. [2024-06-28 01:33:11,687 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 354 transitions, 4232 flow [2024-06-28 01:33:11,687 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) [2024-06-28 01:33:11,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:11,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:11,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:33:11,687 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:11,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1138891862, now seen corresponding path program 5 times [2024-06-28 01:33:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:11,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264963996] [2024-06-28 01:33:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:12,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:12,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264963996] [2024-06-28 01:33:12,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264963996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:12,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:12,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:12,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791584559] [2024-06-28 01:33:12,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:12,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:12,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:12,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:12,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:13,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:13,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 354 transitions, 4232 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:13,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:13,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:14,774 INFO L124 PetriNetUnfolderBase]: 6212/10218 cut-off events. [2024-06-28 01:33:14,774 INFO L125 PetriNetUnfolderBase]: For 221092/221252 co-relation queries the response was YES. [2024-06-28 01:33:14,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59367 conditions, 10218 events. 6212/10218 cut-off events. For 221092/221252 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 69013 event pairs, 2603 based on Foata normal form. 9/9928 useless extension candidates. Maximal degree in co-relation 59293. Up to 8473 conditions per place. [2024-06-28 01:33:14,884 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 278 selfloop transitions, 89 changer transitions 0/401 dead transitions. [2024-06-28 01:33:14,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 401 transitions, 5271 flow [2024-06-28 01:33:14,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:33:14,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:33:14,886 INFO L175 Difference]: Start difference. First operand has 177 places, 354 transitions, 4232 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:33:14,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 401 transitions, 5271 flow [2024-06-28 01:33:15,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 401 transitions, 5052 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:15,120 INFO L231 Difference]: Finished difference. Result has 177 places, 354 transitions, 4222 flow [2024-06-28 01:33:15,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4013, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4222, PETRI_PLACES=177, PETRI_TRANSITIONS=354} [2024-06-28 01:33:15,121 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 121 predicate places. [2024-06-28 01:33:15,121 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 354 transitions, 4222 flow [2024-06-28 01:33:15,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:15,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:15,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:15,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:33:15,122 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:15,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:15,122 INFO L85 PathProgramCache]: Analyzing trace with hash -983255587, now seen corresponding path program 2 times [2024-06-28 01:33:15,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:15,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348356831] [2024-06-28 01:33:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:15,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:16,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:16,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348356831] [2024-06-28 01:33:16,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348356831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:16,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:16,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:16,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526865072] [2024-06-28 01:33:16,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:16,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:16,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:16,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:16,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:16,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 354 transitions, 4222 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) [2024-06-28 01:33:16,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:16,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:16,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:17,946 INFO L124 PetriNetUnfolderBase]: 6614/10726 cut-off events. [2024-06-28 01:33:17,946 INFO L125 PetriNetUnfolderBase]: For 237507/237521 co-relation queries the response was YES. [2024-06-28 01:33:18,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63448 conditions, 10726 events. 6614/10726 cut-off events. For 237507/237521 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 70978 event pairs, 2530 based on Foata normal form. 15/10479 useless extension candidates. Maximal degree in co-relation 63373. Up to 8380 conditions per place. [2024-06-28 01:33:18,237 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 274 selfloop transitions, 154 changer transitions 0/438 dead transitions. [2024-06-28 01:33:18,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 438 transitions, 6240 flow [2024-06-28 01:33:18,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-06-28 01:33:18,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548 [2024-06-28 01:33:18,239 INFO L175 Difference]: Start difference. First operand has 177 places, 354 transitions, 4222 flow. Second operand 10 states and 274 transitions. [2024-06-28 01:33:18,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 438 transitions, 6240 flow [2024-06-28 01:33:18,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 438 transitions, 6040 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:18,439 INFO L231 Difference]: Finished difference. Result has 181 places, 372 transitions, 4790 flow [2024-06-28 01:33:18,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4022, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4790, PETRI_PLACES=181, PETRI_TRANSITIONS=372} [2024-06-28 01:33:18,440 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 125 predicate places. [2024-06-28 01:33:18,440 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 372 transitions, 4790 flow [2024-06-28 01:33:18,440 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) [2024-06-28 01:33:18,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:18,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:18,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:33:18,441 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:18,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1760608755, now seen corresponding path program 5 times [2024-06-28 01:33:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:18,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641972519] [2024-06-28 01:33:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:18,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:19,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:19,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641972519] [2024-06-28 01:33:19,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641972519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:19,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:19,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:19,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979956242] [2024-06-28 01:33:19,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:19,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:19,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:19,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:19,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:19,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:19,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 372 transitions, 4790 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) [2024-06-28 01:33:19,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:19,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:19,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:21,344 INFO L124 PetriNetUnfolderBase]: 6611/10765 cut-off events. [2024-06-28 01:33:21,344 INFO L125 PetriNetUnfolderBase]: For 261895/261901 co-relation queries the response was YES. [2024-06-28 01:33:21,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66260 conditions, 10765 events. 6611/10765 cut-off events. For 261895/261901 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 71836 event pairs, 2689 based on Foata normal form. 9/10506 useless extension candidates. Maximal degree in co-relation 66183. Up to 9117 conditions per place. [2024-06-28 01:33:21,480 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 325 selfloop transitions, 84 changer transitions 0/419 dead transitions. [2024-06-28 01:33:21,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 419 transitions, 5997 flow [2024-06-28 01:33:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:33:21,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-28 01:33:21,481 INFO L175 Difference]: Start difference. First operand has 181 places, 372 transitions, 4790 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:33:21,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 419 transitions, 5997 flow [2024-06-28 01:33:21,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 419 transitions, 5816 flow, removed 80 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:21,796 INFO L231 Difference]: Finished difference. Result has 186 places, 375 transitions, 4918 flow [2024-06-28 01:33:21,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4918, PETRI_PLACES=186, PETRI_TRANSITIONS=375} [2024-06-28 01:33:21,797 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 130 predicate places. [2024-06-28 01:33:21,797 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 375 transitions, 4918 flow [2024-06-28 01:33:21,797 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) [2024-06-28 01:33:21,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:21,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:33:21,798 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:21,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1756884105, now seen corresponding path program 6 times [2024-06-28 01:33:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:21,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215386656] [2024-06-28 01:33:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:22,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215386656] [2024-06-28 01:33:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215386656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:22,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:22,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025859270] [2024-06-28 01:33:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:22,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:22,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:22,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:22,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 375 transitions, 4918 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) [2024-06-28 01:33:22,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:22,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:22,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:24,505 INFO L124 PetriNetUnfolderBase]: 6991/11324 cut-off events. [2024-06-28 01:33:24,505 INFO L125 PetriNetUnfolderBase]: For 280011/280017 co-relation queries the response was YES. [2024-06-28 01:33:24,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71170 conditions, 11324 events. 6991/11324 cut-off events. For 280011/280017 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 75343 event pairs, 3019 based on Foata normal form. 4/11056 useless extension candidates. Maximal degree in co-relation 71091. Up to 9294 conditions per place. [2024-06-28 01:33:24,628 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 340 selfloop transitions, 173 changer transitions 0/523 dead transitions. [2024-06-28 01:33:24,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 523 transitions, 8373 flow [2024-06-28 01:33:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:33:24,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-28 01:33:24,630 INFO L175 Difference]: Start difference. First operand has 186 places, 375 transitions, 4918 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:33:24,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 523 transitions, 8373 flow [2024-06-28 01:33:24,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 523 transitions, 8063 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:24,975 INFO L231 Difference]: Finished difference. Result has 191 places, 456 transitions, 6824 flow [2024-06-28 01:33:24,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4703, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6824, PETRI_PLACES=191, PETRI_TRANSITIONS=456} [2024-06-28 01:33:24,975 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 135 predicate places. [2024-06-28 01:33:24,975 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 456 transitions, 6824 flow [2024-06-28 01:33:24,976 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) [2024-06-28 01:33:24,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:24,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:24,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:33:24,976 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:24,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1756883888, now seen corresponding path program 2 times [2024-06-28 01:33:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:24,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843205316] [2024-06-28 01:33:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843205316] [2024-06-28 01:33:25,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843205316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:25,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:25,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568347087] [2024-06-28 01:33:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:25,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:25,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 456 transitions, 6824 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) [2024-06-28 01:33:25,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:25,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:25,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:27,858 INFO L124 PetriNetUnfolderBase]: 7108/11512 cut-off events. [2024-06-28 01:33:27,858 INFO L125 PetriNetUnfolderBase]: For 300119/300135 co-relation queries the response was YES. [2024-06-28 01:33:27,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74688 conditions, 11512 events. 7108/11512 cut-off events. For 300119/300135 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 76857 event pairs, 2732 based on Foata normal form. 19/11251 useless extension candidates. Maximal degree in co-relation 74606. Up to 9600 conditions per place. [2024-06-28 01:33:27,984 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 415 selfloop transitions, 98 changer transitions 0/523 dead transitions. [2024-06-28 01:33:27,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 523 transitions, 8648 flow [2024-06-28 01:33:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:33:27,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2024-06-28 01:33:27,986 INFO L175 Difference]: Start difference. First operand has 191 places, 456 transitions, 6824 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:33:27,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 523 transitions, 8648 flow [2024-06-28 01:33:28,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 523 transitions, 8428 flow, removed 102 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:28,455 INFO L231 Difference]: Finished difference. Result has 196 places, 467 transitions, 7053 flow [2024-06-28 01:33:28,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6604, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7053, PETRI_PLACES=196, PETRI_TRANSITIONS=467} [2024-06-28 01:33:28,455 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 140 predicate places. [2024-06-28 01:33:28,456 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 467 transitions, 7053 flow [2024-06-28 01:33:28,456 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) [2024-06-28 01:33:28,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:28,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:28,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:33:28,456 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:28,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1756889685, now seen corresponding path program 7 times [2024-06-28 01:33:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:28,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306126189] [2024-06-28 01:33:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:28,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:29,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306126189] [2024-06-28 01:33:29,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306126189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:29,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:29,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:29,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326319154] [2024-06-28 01:33:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:29,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:29,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:29,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:29,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:29,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:29,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 467 transitions, 7053 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) [2024-06-28 01:33:29,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:29,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:29,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:31,260 INFO L124 PetriNetUnfolderBase]: 7100/11449 cut-off events. [2024-06-28 01:33:31,261 INFO L125 PetriNetUnfolderBase]: For 311633/311649 co-relation queries the response was YES. [2024-06-28 01:33:31,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75853 conditions, 11449 events. 7100/11449 cut-off events. For 311633/311649 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 75894 event pairs, 2581 based on Foata normal form. 14/11194 useless extension candidates. Maximal degree in co-relation 75769. Up to 9199 conditions per place. [2024-06-28 01:33:31,396 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 296 selfloop transitions, 220 changer transitions 0/526 dead transitions. [2024-06-28 01:33:31,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 526 transitions, 8785 flow [2024-06-28 01:33:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:33:31,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2024-06-28 01:33:31,397 INFO L175 Difference]: Start difference. First operand has 196 places, 467 transitions, 7053 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:33:31,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 526 transitions, 8785 flow [2024-06-28 01:33:31,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 526 transitions, 8531 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:31,915 INFO L231 Difference]: Finished difference. Result has 199 places, 467 transitions, 7267 flow [2024-06-28 01:33:31,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6803, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7267, PETRI_PLACES=199, PETRI_TRANSITIONS=467} [2024-06-28 01:33:31,916 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 143 predicate places. [2024-06-28 01:33:31,916 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 467 transitions, 7267 flow [2024-06-28 01:33:31,916 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) [2024-06-28 01:33:31,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:31,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:31,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:33:31,917 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:31,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:31,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1756889840, now seen corresponding path program 6 times [2024-06-28 01:33:31,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:31,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195508157] [2024-06-28 01:33:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:31,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:32,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:32,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195508157] [2024-06-28 01:33:32,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195508157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:32,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:32,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228173121] [2024-06-28 01:33:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:32,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:33,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:33,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 467 transitions, 7267 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:33,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:33,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:35,076 INFO L124 PetriNetUnfolderBase]: 6880/11263 cut-off events. [2024-06-28 01:33:35,076 INFO L125 PetriNetUnfolderBase]: For 313095/313322 co-relation queries the response was YES. [2024-06-28 01:33:35,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74631 conditions, 11263 events. 6880/11263 cut-off events. For 313095/313322 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 76527 event pairs, 2475 based on Foata normal form. 16/10960 useless extension candidates. Maximal degree in co-relation 74546. Up to 9132 conditions per place. [2024-06-28 01:33:35,217 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 320 selfloop transitions, 160 changer transitions 0/530 dead transitions. [2024-06-28 01:33:35,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 530 transitions, 8971 flow [2024-06-28 01:33:35,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 01:33:35,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5275 [2024-06-28 01:33:35,218 INFO L175 Difference]: Start difference. First operand has 199 places, 467 transitions, 7267 flow. Second operand 8 states and 211 transitions. [2024-06-28 01:33:35,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 530 transitions, 8971 flow [2024-06-28 01:33:35,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 530 transitions, 8479 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:35,751 INFO L231 Difference]: Finished difference. Result has 201 places, 479 transitions, 7508 flow [2024-06-28 01:33:35,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6775, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7508, PETRI_PLACES=201, PETRI_TRANSITIONS=479} [2024-06-28 01:33:35,751 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 145 predicate places. [2024-06-28 01:33:35,751 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 479 transitions, 7508 flow [2024-06-28 01:33:35,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:35,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:35,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:35,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:33:35,752 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:35,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1482707726, now seen corresponding path program 3 times [2024-06-28 01:33:35,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:35,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044630153] [2024-06-28 01:33:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:35,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:36,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:36,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044630153] [2024-06-28 01:33:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044630153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:36,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:36,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:36,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507630973] [2024-06-28 01:33:36,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:36,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:36,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:36,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:36,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 479 transitions, 7508 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) [2024-06-28 01:33:36,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:36,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:36,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:38,627 INFO L124 PetriNetUnfolderBase]: 7217/11710 cut-off events. [2024-06-28 01:33:38,627 INFO L125 PetriNetUnfolderBase]: For 333045/333047 co-relation queries the response was YES. [2024-06-28 01:33:38,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79306 conditions, 11710 events. 7217/11710 cut-off events. For 333045/333047 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 78584 event pairs, 3068 based on Foata normal form. 6/11428 useless extension candidates. Maximal degree in co-relation 79220. Up to 10114 conditions per place. [2024-06-28 01:33:38,765 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 489 selfloop transitions, 27 changer transitions 0/526 dead transitions. [2024-06-28 01:33:38,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 526 transitions, 8991 flow [2024-06-28 01:33:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:33:38,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-06-28 01:33:38,767 INFO L175 Difference]: Start difference. First operand has 201 places, 479 transitions, 7508 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:33:38,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 526 transitions, 8991 flow [2024-06-28 01:33:39,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 526 transitions, 8795 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:39,317 INFO L231 Difference]: Finished difference. Result has 207 places, 487 transitions, 7574 flow [2024-06-28 01:33:39,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7312, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7574, PETRI_PLACES=207, PETRI_TRANSITIONS=487} [2024-06-28 01:33:39,317 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 151 predicate places. [2024-06-28 01:33:39,317 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 487 transitions, 7574 flow [2024-06-28 01:33:39,318 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) [2024-06-28 01:33:39,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:39,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:39,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:33:39,318 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:39,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash 325800144, now seen corresponding path program 7 times [2024-06-28 01:33:39,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:39,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467515230] [2024-06-28 01:33:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:39,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467515230] [2024-06-28 01:33:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467515230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:40,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:40,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513429400] [2024-06-28 01:33:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:40,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:40,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 487 transitions, 7574 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:40,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:40,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:40,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:42,563 INFO L124 PetriNetUnfolderBase]: 6983/11323 cut-off events. [2024-06-28 01:33:42,563 INFO L125 PetriNetUnfolderBase]: For 342422/342657 co-relation queries the response was YES. [2024-06-28 01:33:42,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77568 conditions, 11323 events. 6983/11323 cut-off events. For 342422/342657 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 76427 event pairs, 2931 based on Foata normal form. 15/11038 useless extension candidates. Maximal degree in co-relation 77480. Up to 9667 conditions per place. [2024-06-28 01:33:42,702 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 450 selfloop transitions, 32 changer transitions 0/532 dead transitions. [2024-06-28 01:33:42,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 532 transitions, 8965 flow [2024-06-28 01:33:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:33:42,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-28 01:33:42,704 INFO L175 Difference]: Start difference. First operand has 207 places, 487 transitions, 7574 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:33:42,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 532 transitions, 8965 flow [2024-06-28 01:33:43,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 532 transitions, 8786 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:43,214 INFO L231 Difference]: Finished difference. Result has 209 places, 490 transitions, 7549 flow [2024-06-28 01:33:43,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7395, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7549, PETRI_PLACES=209, PETRI_TRANSITIONS=490} [2024-06-28 01:33:43,215 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 153 predicate places. [2024-06-28 01:33:43,215 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 490 transitions, 7549 flow [2024-06-28 01:33:43,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:43,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:43,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:43,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:33:43,216 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:43,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1097187783, now seen corresponding path program 8 times [2024-06-28 01:33:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937622328] [2024-06-28 01:33:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:44,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937622328] [2024-06-28 01:33:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937622328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:44,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:44,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620452236] [2024-06-28 01:33:44,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:44,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:44,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:44,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 490 transitions, 7549 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) [2024-06-28 01:33:44,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:44,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:44,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:46,512 INFO L124 PetriNetUnfolderBase]: 7259/11660 cut-off events. [2024-06-28 01:33:46,512 INFO L125 PetriNetUnfolderBase]: For 354273/354275 co-relation queries the response was YES. [2024-06-28 01:33:46,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80838 conditions, 11660 events. 7259/11660 cut-off events. For 354273/354275 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 77350 event pairs, 3067 based on Foata normal form. 3/11407 useless extension candidates. Maximal degree in co-relation 80750. Up to 10185 conditions per place. [2024-06-28 01:33:46,652 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 495 selfloop transitions, 34 changer transitions 0/539 dead transitions. [2024-06-28 01:33:46,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 539 transitions, 9172 flow [2024-06-28 01:33:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:33:46,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622222222222222 [2024-06-28 01:33:46,654 INFO L175 Difference]: Start difference. First operand has 209 places, 490 transitions, 7549 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:33:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 539 transitions, 9172 flow [2024-06-28 01:33:47,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 539 transitions, 9046 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:47,120 INFO L231 Difference]: Finished difference. Result has 212 places, 499 transitions, 7767 flow [2024-06-28 01:33:47,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7423, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7767, PETRI_PLACES=212, PETRI_TRANSITIONS=499} [2024-06-28 01:33:47,121 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 156 predicate places. [2024-06-28 01:33:47,122 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 499 transitions, 7767 flow [2024-06-28 01:33:47,122 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) [2024-06-28 01:33:47,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:47,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:47,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:33:47,122 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:47,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash 334051476, now seen corresponding path program 4 times [2024-06-28 01:33:47,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:47,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746279441] [2024-06-28 01:33:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:47,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:47,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746279441] [2024-06-28 01:33:47,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746279441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:47,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:47,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885165603] [2024-06-28 01:33:47,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:47,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:47,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:47,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:48,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:48,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 499 transitions, 7767 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) [2024-06-28 01:33:48,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:48,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:48,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:50,146 INFO L124 PetriNetUnfolderBase]: 7343/11793 cut-off events. [2024-06-28 01:33:50,146 INFO L125 PetriNetUnfolderBase]: For 370970/370972 co-relation queries the response was YES. [2024-06-28 01:33:50,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82176 conditions, 11793 events. 7343/11793 cut-off events. For 370970/370972 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 78229 event pairs, 3074 based on Foata normal form. 6/11541 useless extension candidates. Maximal degree in co-relation 82087. Up to 10207 conditions per place. [2024-06-28 01:33:50,272 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 502 selfloop transitions, 44 changer transitions 0/556 dead transitions. [2024-06-28 01:33:50,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 556 transitions, 9449 flow [2024-06-28 01:33:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:33:50,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2024-06-28 01:33:50,274 INFO L175 Difference]: Start difference. First operand has 212 places, 499 transitions, 7767 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:33:50,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 556 transitions, 9449 flow [2024-06-28 01:33:50,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 556 transitions, 9231 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:50,785 INFO L231 Difference]: Finished difference. Result has 214 places, 507 transitions, 7863 flow [2024-06-28 01:33:50,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7549, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7863, PETRI_PLACES=214, PETRI_TRANSITIONS=507} [2024-06-28 01:33:50,786 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 158 predicate places. [2024-06-28 01:33:50,786 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 507 transitions, 7863 flow [2024-06-28 01:33:50,786 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) [2024-06-28 01:33:50,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:50,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:50,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:33:50,787 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:50,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash 325806096, now seen corresponding path program 5 times [2024-06-28 01:33:50,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:50,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18240343] [2024-06-28 01:33:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:50,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:51,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:51,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18240343] [2024-06-28 01:33:51,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18240343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:51,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:51,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200482257] [2024-06-28 01:33:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:51,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:51,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:51,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:51,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:51,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 507 transitions, 7863 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) [2024-06-28 01:33:51,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:51,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:51,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:53,865 INFO L124 PetriNetUnfolderBase]: 7327/11775 cut-off events. [2024-06-28 01:33:53,865 INFO L125 PetriNetUnfolderBase]: For 376878/376880 co-relation queries the response was YES. [2024-06-28 01:33:53,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82033 conditions, 11775 events. 7327/11775 cut-off events. For 376878/376880 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 78200 event pairs, 3070 based on Foata normal form. 6/11522 useless extension candidates. Maximal degree in co-relation 81943. Up to 10074 conditions per place. [2024-06-28 01:33:54,001 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 488 selfloop transitions, 65 changer transitions 0/563 dead transitions. [2024-06-28 01:33:54,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 563 transitions, 9471 flow [2024-06-28 01:33:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:33:54,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025 [2024-06-28 01:33:54,002 INFO L175 Difference]: Start difference. First operand has 214 places, 507 transitions, 7863 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:33:54,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 563 transitions, 9471 flow [2024-06-28 01:33:54,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 563 transitions, 9211 flow, removed 94 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:54,653 INFO L231 Difference]: Finished difference. Result has 216 places, 507 transitions, 7748 flow [2024-06-28 01:33:54,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7748, PETRI_PLACES=216, PETRI_TRANSITIONS=507} [2024-06-28 01:33:54,655 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 160 predicate places. [2024-06-28 01:33:54,655 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 507 transitions, 7748 flow [2024-06-28 01:33:54,656 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) [2024-06-28 01:33:54,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:54,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:54,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:33:54,656 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:54,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:54,656 INFO L85 PathProgramCache]: Analyzing trace with hash 325805879, now seen corresponding path program 9 times [2024-06-28 01:33:54,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:54,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031511266] [2024-06-28 01:33:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:55,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:55,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031511266] [2024-06-28 01:33:55,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031511266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:55,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:55,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:55,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700681657] [2024-06-28 01:33:55,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:55,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:55,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:55,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:55,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:55,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:55,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 507 transitions, 7748 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) [2024-06-28 01:33:55,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:55,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:55,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:57,633 INFO L124 PetriNetUnfolderBase]: 7369/11847 cut-off events. [2024-06-28 01:33:57,633 INFO L125 PetriNetUnfolderBase]: For 381915/381917 co-relation queries the response was YES. [2024-06-28 01:33:57,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82554 conditions, 11847 events. 7369/11847 cut-off events. For 381915/381917 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 78766 event pairs, 3069 based on Foata normal form. 3/11588 useless extension candidates. Maximal degree in co-relation 82463. Up to 10193 conditions per place. [2024-06-28 01:33:57,763 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 493 selfloop transitions, 71 changer transitions 0/574 dead transitions. [2024-06-28 01:33:57,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 574 transitions, 9891 flow [2024-06-28 01:33:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:33:57,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025 [2024-06-28 01:33:57,765 INFO L175 Difference]: Start difference. First operand has 216 places, 507 transitions, 7748 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:33:57,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 574 transitions, 9891 flow [2024-06-28 01:33:58,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 574 transitions, 9613 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:58,290 INFO L231 Difference]: Finished difference. Result has 217 places, 516 transitions, 7888 flow [2024-06-28 01:33:58,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7470, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7888, PETRI_PLACES=217, PETRI_TRANSITIONS=516} [2024-06-28 01:33:58,291 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 161 predicate places. [2024-06-28 01:33:58,293 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 516 transitions, 7888 flow [2024-06-28 01:33:58,293 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) [2024-06-28 01:33:58,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:58,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:58,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:33:58,294 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:58,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:58,294 INFO L85 PathProgramCache]: Analyzing trace with hash 325800299, now seen corresponding path program 10 times [2024-06-28 01:33:58,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:58,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065229543] [2024-06-28 01:33:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:58,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:59,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:59,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065229543] [2024-06-28 01:33:59,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065229543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:59,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:59,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443331642] [2024-06-28 01:33:59,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:59,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:59,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:59,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:59,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:59,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 516 transitions, 7888 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) [2024-06-28 01:33:59,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:59,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:59,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:01,445 INFO L124 PetriNetUnfolderBase]: 7361/11836 cut-off events. [2024-06-28 01:34:01,446 INFO L125 PetriNetUnfolderBase]: For 387249/387251 co-relation queries the response was YES. [2024-06-28 01:34:01,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82174 conditions, 11836 events. 7361/11836 cut-off events. For 387249/387251 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 78715 event pairs, 3069 based on Foata normal form. 3/11577 useless extension candidates. Maximal degree in co-relation 82082. Up to 10185 conditions per place. [2024-06-28 01:34:01,595 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 482 selfloop transitions, 74 changer transitions 0/566 dead transitions. [2024-06-28 01:34:01,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 566 transitions, 9506 flow [2024-06-28 01:34:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:34:01,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-06-28 01:34:01,596 INFO L175 Difference]: Start difference. First operand has 217 places, 516 transitions, 7888 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:34:01,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 566 transitions, 9506 flow [2024-06-28 01:34:02,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 566 transitions, 9046 flow, removed 177 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:02,295 INFO L231 Difference]: Finished difference. Result has 220 places, 516 transitions, 7592 flow [2024-06-28 01:34:02,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7428, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7592, PETRI_PLACES=220, PETRI_TRANSITIONS=516} [2024-06-28 01:34:02,296 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 164 predicate places. [2024-06-28 01:34:02,296 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 516 transitions, 7592 flow [2024-06-28 01:34:02,297 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) [2024-06-28 01:34:02,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:02,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:02,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:34:02,297 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:02,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:02,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1827124606, now seen corresponding path program 1 times [2024-06-28 01:34:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:02,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175040539] [2024-06-28 01:34:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:02,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175040539] [2024-06-28 01:34:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175040539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:02,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:02,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:34:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413948797] [2024-06-28 01:34:02,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:03,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:34:03,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:03,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:34:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:34:03,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:03,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 516 transitions, 7592 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) [2024-06-28 01:34:03,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:03,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:03,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:05,664 INFO L124 PetriNetUnfolderBase]: 8389/13986 cut-off events. [2024-06-28 01:34:05,664 INFO L125 PetriNetUnfolderBase]: For 497549/497849 co-relation queries the response was YES. [2024-06-28 01:34:05,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91606 conditions, 13986 events. 8389/13986 cut-off events. For 497549/497849 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 99248 event pairs, 4003 based on Foata normal form. 77/13587 useless extension candidates. Maximal degree in co-relation 91513. Up to 11712 conditions per place. [2024-06-28 01:34:05,816 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 431 selfloop transitions, 15 changer transitions 0/538 dead transitions. [2024-06-28 01:34:05,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 538 transitions, 8640 flow [2024-06-28 01:34:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:34:05,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-28 01:34:05,817 INFO L175 Difference]: Start difference. First operand has 220 places, 516 transitions, 7592 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:34:05,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 538 transitions, 8640 flow [2024-06-28 01:34:06,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 538 transitions, 8462 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:06,550 INFO L231 Difference]: Finished difference. Result has 219 places, 519 transitions, 7482 flow [2024-06-28 01:34:06,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7414, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7482, PETRI_PLACES=219, PETRI_TRANSITIONS=519} [2024-06-28 01:34:06,552 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 163 predicate places. [2024-06-28 01:34:06,552 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 519 transitions, 7482 flow [2024-06-28 01:34:06,552 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) [2024-06-28 01:34:06,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:06,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:06,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:34:06,553 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:06,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1962285357, now seen corresponding path program 1 times [2024-06-28 01:34:06,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:06,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171722412] [2024-06-28 01:34:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:06,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:07,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171722412] [2024-06-28 01:34:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171722412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:07,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:07,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:34:07,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776113473] [2024-06-28 01:34:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:07,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:34:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:07,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:34:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:34:07,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:07,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 519 transitions, 7482 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:07,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:07,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:07,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:09,731 INFO L124 PetriNetUnfolderBase]: 7597/12263 cut-off events. [2024-06-28 01:34:09,731 INFO L125 PetriNetUnfolderBase]: For 477913/478341 co-relation queries the response was YES. [2024-06-28 01:34:09,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87336 conditions, 12263 events. 7597/12263 cut-off events. For 477913/478341 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 83027 event pairs, 2262 based on Foata normal form. 29/11933 useless extension candidates. Maximal degree in co-relation 87242. Up to 9735 conditions per place. [2024-06-28 01:34:09,883 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 400 selfloop transitions, 139 changer transitions 0/596 dead transitions. [2024-06-28 01:34:09,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 596 transitions, 9441 flow [2024-06-28 01:34:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-06-28 01:34:09,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-06-28 01:34:09,885 INFO L175 Difference]: Start difference. First operand has 219 places, 519 transitions, 7482 flow. Second operand 10 states and 268 transitions. [2024-06-28 01:34:09,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 596 transitions, 9441 flow [2024-06-28 01:34:10,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 596 transitions, 9395 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:10,575 INFO L231 Difference]: Finished difference. Result has 227 places, 529 transitions, 8001 flow [2024-06-28 01:34:10,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7436, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8001, PETRI_PLACES=227, PETRI_TRANSITIONS=529} [2024-06-28 01:34:10,576 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 171 predicate places. [2024-06-28 01:34:10,576 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 529 transitions, 8001 flow [2024-06-28 01:34:10,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:10,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:10,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:10,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:34:10,576 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:10,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1049543199, now seen corresponding path program 1 times [2024-06-28 01:34:10,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:10,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868132095] [2024-06-28 01:34:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:10,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:11,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:11,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868132095] [2024-06-28 01:34:11,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868132095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:11,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:11,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:34:11,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452072729] [2024-06-28 01:34:11,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:11,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:34:11,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:11,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:34:11,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:34:11,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:11,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 529 transitions, 8001 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:11,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:11,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:11,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:13,935 INFO L124 PetriNetUnfolderBase]: 7858/12493 cut-off events. [2024-06-28 01:34:13,935 INFO L125 PetriNetUnfolderBase]: For 487929/487941 co-relation queries the response was YES. [2024-06-28 01:34:14,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91723 conditions, 12493 events. 7858/12493 cut-off events. For 487929/487941 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 82740 event pairs, 2643 based on Foata normal form. 14/12232 useless extension candidates. Maximal degree in co-relation 91626. Up to 10213 conditions per place. [2024-06-28 01:34:14,071 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 430 selfloop transitions, 166 changer transitions 0/607 dead transitions. [2024-06-28 01:34:14,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 607 transitions, 10153 flow [2024-06-28 01:34:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-06-28 01:34:14,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-06-28 01:34:14,072 INFO L175 Difference]: Start difference. First operand has 227 places, 529 transitions, 8001 flow. Second operand 11 states and 285 transitions. [2024-06-28 01:34:14,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 607 transitions, 10153 flow [2024-06-28 01:34:14,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 607 transitions, 9860 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:14,733 INFO L231 Difference]: Finished difference. Result has 233 places, 540 transitions, 8397 flow [2024-06-28 01:34:14,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7708, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8397, PETRI_PLACES=233, PETRI_TRANSITIONS=540} [2024-06-28 01:34:14,734 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 177 predicate places. [2024-06-28 01:34:14,734 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 540 transitions, 8397 flow [2024-06-28 01:34:14,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:14,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:14,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:34:14,738 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:14,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1201328233, now seen corresponding path program 2 times [2024-06-28 01:34:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815229849] [2024-06-28 01:34:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:15,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:15,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815229849] [2024-06-28 01:34:15,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815229849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:15,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:15,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:34:15,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027422333] [2024-06-28 01:34:15,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:15,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:34:15,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:34:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:34:15,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:15,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 540 transitions, 8397 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:15,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:15,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:15,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:18,330 INFO L124 PetriNetUnfolderBase]: 7753/12566 cut-off events. [2024-06-28 01:34:18,330 INFO L125 PetriNetUnfolderBase]: For 520578/520906 co-relation queries the response was YES. [2024-06-28 01:34:18,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93080 conditions, 12566 events. 7753/12566 cut-off events. For 520578/520906 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 85983 event pairs, 2560 based on Foata normal form. 31/12292 useless extension candidates. Maximal degree in co-relation 92981. Up to 10031 conditions per place. [2024-06-28 01:34:18,466 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 412 selfloop transitions, 155 changer transitions 0/627 dead transitions. [2024-06-28 01:34:18,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 627 transitions, 10402 flow [2024-06-28 01:34:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2024-06-28 01:34:18,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345454545454545 [2024-06-28 01:34:18,470 INFO L175 Difference]: Start difference. First operand has 233 places, 540 transitions, 8397 flow. Second operand 11 states and 294 transitions. [2024-06-28 01:34:18,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 627 transitions, 10402 flow [2024-06-28 01:34:19,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 627 transitions, 10202 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:19,229 INFO L231 Difference]: Finished difference. Result has 239 places, 554 transitions, 8767 flow [2024-06-28 01:34:19,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=8197, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8767, PETRI_PLACES=239, PETRI_TRANSITIONS=554} [2024-06-28 01:34:19,230 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 183 predicate places. [2024-06-28 01:34:19,230 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 554 transitions, 8767 flow [2024-06-28 01:34:19,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:19,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:19,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:19,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:34:19,231 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:19,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1179939163, now seen corresponding path program 3 times [2024-06-28 01:34:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:19,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105181401] [2024-06-28 01:34:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:19,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:20,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:20,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105181401] [2024-06-28 01:34:20,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105181401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:20,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:20,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:34:20,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127052768] [2024-06-28 01:34:20,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:20,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:34:20,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:20,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:34:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:34:20,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:20,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 554 transitions, 8767 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:20,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:20,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:20,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:23,078 INFO L124 PetriNetUnfolderBase]: 7794/12671 cut-off events. [2024-06-28 01:34:23,078 INFO L125 PetriNetUnfolderBase]: For 532879/533141 co-relation queries the response was YES. [2024-06-28 01:34:23,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94893 conditions, 12671 events. 7794/12671 cut-off events. For 532879/533141 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 87048 event pairs, 2620 based on Foata normal form. 27/12383 useless extension candidates. Maximal degree in co-relation 94791. Up to 10286 conditions per place. [2024-06-28 01:34:23,245 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 419 selfloop transitions, 145 changer transitions 0/624 dead transitions. [2024-06-28 01:34:23,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 624 transitions, 10458 flow [2024-06-28 01:34:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 289 transitions. [2024-06-28 01:34:23,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254545454545455 [2024-06-28 01:34:23,247 INFO L175 Difference]: Start difference. First operand has 239 places, 554 transitions, 8767 flow. Second operand 11 states and 289 transitions. [2024-06-28 01:34:23,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 624 transitions, 10458 flow [2024-06-28 01:34:24,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 624 transitions, 10244 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:24,058 INFO L231 Difference]: Finished difference. Result has 244 places, 558 transitions, 8961 flow [2024-06-28 01:34:24,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=8555, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8961, PETRI_PLACES=244, PETRI_TRANSITIONS=558} [2024-06-28 01:34:24,059 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 188 predicate places. [2024-06-28 01:34:24,059 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 558 transitions, 8961 flow [2024-06-28 01:34:24,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:24,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:24,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:24,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:34:24,060 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:24,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1978201767, now seen corresponding path program 3 times [2024-06-28 01:34:24,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:24,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879459021] [2024-06-28 01:34:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:24,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:24,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879459021] [2024-06-28 01:34:24,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879459021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:24,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:24,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118146135] [2024-06-28 01:34:24,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:24,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:25,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:25,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 558 transitions, 8961 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) [2024-06-28 01:34:25,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:25,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:25,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:27,960 INFO L124 PetriNetUnfolderBase]: 8252/13153 cut-off events. [2024-06-28 01:34:27,961 INFO L125 PetriNetUnfolderBase]: For 549004/549016 co-relation queries the response was YES. [2024-06-28 01:34:28,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99591 conditions, 13153 events. 8252/13153 cut-off events. For 549004/549016 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 88269 event pairs, 2728 based on Foata normal form. 16/12887 useless extension candidates. Maximal degree in co-relation 99487. Up to 11151 conditions per place. [2024-06-28 01:34:28,158 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 511 selfloop transitions, 129 changer transitions 0/651 dead transitions. [2024-06-28 01:34:28,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 651 transitions, 11333 flow [2024-06-28 01:34:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 303 transitions. [2024-06-28 01:34:28,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-28 01:34:28,160 INFO L175 Difference]: Start difference. First operand has 244 places, 558 transitions, 8961 flow. Second operand 12 states and 303 transitions. [2024-06-28 01:34:28,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 651 transitions, 11333 flow [2024-06-28 01:34:29,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 651 transitions, 10965 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:29,297 INFO L231 Difference]: Finished difference. Result has 249 places, 579 transitions, 9275 flow [2024-06-28 01:34:29,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=8597, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9275, PETRI_PLACES=249, PETRI_TRANSITIONS=579} [2024-06-28 01:34:29,298 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 193 predicate places. [2024-06-28 01:34:29,298 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 579 transitions, 9275 flow [2024-06-28 01:34:29,298 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) [2024-06-28 01:34:29,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:29,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:29,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:34:29,298 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:29,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1101408677, now seen corresponding path program 4 times [2024-06-28 01:34:29,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:29,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550175905] [2024-06-28 01:34:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:29,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:30,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:30,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550175905] [2024-06-28 01:34:30,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550175905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:30,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:30,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:30,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165376404] [2024-06-28 01:34:30,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:30,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:30,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:30,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 579 transitions, 9275 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:30,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:30,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:30,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:33,665 INFO L124 PetriNetUnfolderBase]: 8351/13527 cut-off events. [2024-06-28 01:34:33,666 INFO L125 PetriNetUnfolderBase]: For 585708/585921 co-relation queries the response was YES. [2024-06-28 01:34:33,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102977 conditions, 13527 events. 8351/13527 cut-off events. For 585708/585921 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 93666 event pairs, 2698 based on Foata normal form. 43/13255 useless extension candidates. Maximal degree in co-relation 102870. Up to 10972 conditions per place. [2024-06-28 01:34:33,868 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 494 selfloop transitions, 131 changer transitions 0/685 dead transitions. [2024-06-28 01:34:33,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 685 transitions, 11723 flow [2024-06-28 01:34:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-06-28 01:34:33,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-06-28 01:34:33,874 INFO L175 Difference]: Start difference. First operand has 249 places, 579 transitions, 9275 flow. Second operand 11 states and 290 transitions. [2024-06-28 01:34:33,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 685 transitions, 11723 flow [2024-06-28 01:34:35,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 685 transitions, 11502 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:35,087 INFO L231 Difference]: Finished difference. Result has 256 places, 611 transitions, 9892 flow [2024-06-28 01:34:35,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=9054, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9892, PETRI_PLACES=256, PETRI_TRANSITIONS=611} [2024-06-28 01:34:35,088 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 200 predicate places. [2024-06-28 01:34:35,088 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 611 transitions, 9892 flow [2024-06-28 01:34:35,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:35,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:35,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:35,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:34:35,089 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:35,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1101348227, now seen corresponding path program 5 times [2024-06-28 01:34:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:35,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413476268] [2024-06-28 01:34:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:36,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413476268] [2024-06-28 01:34:36,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413476268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:36,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:36,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923057793] [2024-06-28 01:34:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:36,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:36,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:36,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:36,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 611 transitions, 9892 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:36,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:36,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:36,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:40,273 INFO L124 PetriNetUnfolderBase]: 8333/13535 cut-off events. [2024-06-28 01:34:40,274 INFO L125 PetriNetUnfolderBase]: For 598485/598692 co-relation queries the response was YES. [2024-06-28 01:34:40,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104016 conditions, 13535 events. 8333/13535 cut-off events. For 598485/598692 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 94206 event pairs, 2765 based on Foata normal form. 45/13257 useless extension candidates. Maximal degree in co-relation 103906. Up to 11207 conditions per place. [2024-06-28 01:34:40,599 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 506 selfloop transitions, 113 changer transitions 0/679 dead transitions. [2024-06-28 01:34:40,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 679 transitions, 11650 flow [2024-06-28 01:34:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-06-28 01:34:40,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-06-28 01:34:40,600 INFO L175 Difference]: Start difference. First operand has 256 places, 611 transitions, 9892 flow. Second operand 11 states and 285 transitions. [2024-06-28 01:34:40,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 679 transitions, 11650 flow [2024-06-28 01:34:41,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 679 transitions, 11332 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:41,649 INFO L231 Difference]: Finished difference. Result has 260 places, 611 transitions, 9822 flow [2024-06-28 01:34:41,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=9574, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9822, PETRI_PLACES=260, PETRI_TRANSITIONS=611} [2024-06-28 01:34:41,649 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 204 predicate places. [2024-06-28 01:34:41,650 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 611 transitions, 9822 flow [2024-06-28 01:34:41,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:41,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:41,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:41,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:34:41,650 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:41,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1101348103, now seen corresponding path program 2 times [2024-06-28 01:34:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:41,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742356848] [2024-06-28 01:34:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:41,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:42,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:42,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742356848] [2024-06-28 01:34:42,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742356848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:42,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:42,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841338259] [2024-06-28 01:34:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:42,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:42,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:42,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:42,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 611 transitions, 9822 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) [2024-06-28 01:34:42,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:42,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:42,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:46,513 INFO L124 PetriNetUnfolderBase]: 8757/13973 cut-off events. [2024-06-28 01:34:46,513 INFO L125 PetriNetUnfolderBase]: For 608170/608182 co-relation queries the response was YES. [2024-06-28 01:34:46,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107948 conditions, 13973 events. 8757/13973 cut-off events. For 608170/608182 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 94983 event pairs, 2887 based on Foata normal form. 15/13683 useless extension candidates. Maximal degree in co-relation 107836. Up to 11883 conditions per place. [2024-06-28 01:34:46,698 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 549 selfloop transitions, 134 changer transitions 0/694 dead transitions. [2024-06-28 01:34:46,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 694 transitions, 11952 flow [2024-06-28 01:34:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-06-28 01:34:46,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49833333333333335 [2024-06-28 01:34:46,699 INFO L175 Difference]: Start difference. First operand has 260 places, 611 transitions, 9822 flow. Second operand 12 states and 299 transitions. [2024-06-28 01:34:46,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 694 transitions, 11952 flow [2024-06-28 01:34:47,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 694 transitions, 11736 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:47,900 INFO L231 Difference]: Finished difference. Result has 263 places, 620 transitions, 10107 flow [2024-06-28 01:34:47,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=9606, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10107, PETRI_PLACES=263, PETRI_TRANSITIONS=620} [2024-06-28 01:34:47,901 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 207 predicate places. [2024-06-28 01:34:47,901 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 620 transitions, 10107 flow [2024-06-28 01:34:47,902 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) [2024-06-28 01:34:47,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:47,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:47,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:34:47,902 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:47,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash -127181493, now seen corresponding path program 3 times [2024-06-28 01:34:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:47,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179481623] [2024-06-28 01:34:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:48,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179481623] [2024-06-28 01:34:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179481623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:48,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:48,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857840234] [2024-06-28 01:34:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:48,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:49,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:49,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 620 transitions, 10107 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) [2024-06-28 01:34:49,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:49,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:49,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:52,597 INFO L124 PetriNetUnfolderBase]: 8794/14036 cut-off events. [2024-06-28 01:34:52,598 INFO L125 PetriNetUnfolderBase]: For 628572/628587 co-relation queries the response was YES. [2024-06-28 01:34:52,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109032 conditions, 14036 events. 8794/14036 cut-off events. For 628572/628587 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 95451 event pairs, 2866 based on Foata normal form. 13/13741 useless extension candidates. Maximal degree in co-relation 108919. Up to 11531 conditions per place. [2024-06-28 01:34:52,919 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 429 selfloop transitions, 247 changer transitions 0/687 dead transitions. [2024-06-28 01:34:52,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 687 transitions, 12195 flow [2024-06-28 01:34:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:34:52,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518 [2024-06-28 01:34:52,920 INFO L175 Difference]: Start difference. First operand has 263 places, 620 transitions, 10107 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:34:52,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 687 transitions, 12195 flow [2024-06-28 01:34:54,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 687 transitions, 11846 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:54,025 INFO L231 Difference]: Finished difference. Result has 266 places, 628 transitions, 10609 flow [2024-06-28 01:34:54,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=9758, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10609, PETRI_PLACES=266, PETRI_TRANSITIONS=628} [2024-06-28 01:34:54,026 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 210 predicate places. [2024-06-28 01:34:54,026 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 628 transitions, 10609 flow [2024-06-28 01:34:54,026 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) [2024-06-28 01:34:54,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:54,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:54,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:34:54,027 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:54,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash -127181307, now seen corresponding path program 4 times [2024-06-28 01:34:54,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:54,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311674799] [2024-06-28 01:34:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:54,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:54,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:54,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311674799] [2024-06-28 01:34:54,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311674799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:54,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:54,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:54,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847163020] [2024-06-28 01:34:54,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:54,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:54,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:54,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:54,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:55,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:55,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 628 transitions, 10609 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) [2024-06-28 01:34:55,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:55,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:55,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:58,819 INFO L124 PetriNetUnfolderBase]: 8875/14207 cut-off events. [2024-06-28 01:34:58,819 INFO L125 PetriNetUnfolderBase]: For 665129/665142 co-relation queries the response was YES. [2024-06-28 01:34:58,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112029 conditions, 14207 events. 8875/14207 cut-off events. For 665129/665142 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 96977 event pairs, 2780 based on Foata normal form. 13/13898 useless extension candidates. Maximal degree in co-relation 111914. Up to 11012 conditions per place. [2024-06-28 01:34:59,010 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 429 selfloop transitions, 256 changer transitions 0/696 dead transitions. [2024-06-28 01:34:59,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 696 transitions, 13001 flow [2024-06-28 01:34:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-28 01:34:59,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542 [2024-06-28 01:34:59,012 INFO L175 Difference]: Start difference. First operand has 266 places, 628 transitions, 10609 flow. Second operand 10 states and 271 transitions. [2024-06-28 01:34:59,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 696 transitions, 13001 flow [2024-06-28 01:35:00,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 696 transitions, 12637 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:00,181 INFO L231 Difference]: Finished difference. Result has 269 places, 631 transitions, 10818 flow [2024-06-28 01:35:00,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=10245, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10818, PETRI_PLACES=269, PETRI_TRANSITIONS=631} [2024-06-28 01:35:00,182 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 213 predicate places. [2024-06-28 01:35:00,182 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 631 transitions, 10818 flow [2024-06-28 01:35:00,182 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) [2024-06-28 01:35:00,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:00,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:00,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:35:00,183 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:00,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash -127174797, now seen corresponding path program 5 times [2024-06-28 01:35:00,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:00,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474677006] [2024-06-28 01:35:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:01,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474677006] [2024-06-28 01:35:01,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474677006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:01,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:01,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:01,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792229866] [2024-06-28 01:35:01,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:01,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:01,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:01,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:01,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:01,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:01,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 631 transitions, 10818 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) [2024-06-28 01:35:01,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:01,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:01,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:04,815 INFO L124 PetriNetUnfolderBase]: 8865/14194 cut-off events. [2024-06-28 01:35:04,816 INFO L125 PetriNetUnfolderBase]: For 676012/676025 co-relation queries the response was YES. [2024-06-28 01:35:04,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113106 conditions, 14194 events. 8865/14194 cut-off events. For 676012/676025 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 96927 event pairs, 2783 based on Foata normal form. 13/13885 useless extension candidates. Maximal degree in co-relation 112989. Up to 11004 conditions per place. [2024-06-28 01:35:04,998 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 414 selfloop transitions, 268 changer transitions 0/693 dead transitions. [2024-06-28 01:35:04,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 693 transitions, 12962 flow [2024-06-28 01:35:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-28 01:35:05,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534 [2024-06-28 01:35:05,000 INFO L175 Difference]: Start difference. First operand has 269 places, 631 transitions, 10818 flow. Second operand 10 states and 267 transitions. [2024-06-28 01:35:05,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 693 transitions, 12962 flow [2024-06-28 01:35:06,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 693 transitions, 12371 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:06,562 INFO L231 Difference]: Finished difference. Result has 271 places, 631 transitions, 10771 flow [2024-06-28 01:35:06,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=10227, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10771, PETRI_PLACES=271, PETRI_TRANSITIONS=631} [2024-06-28 01:35:06,563 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 215 predicate places. [2024-06-28 01:35:06,563 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 631 transitions, 10771 flow [2024-06-28 01:35:06,563 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) [2024-06-28 01:35:06,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:06,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:06,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:35:06,564 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:06,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash -983260547, now seen corresponding path program 6 times [2024-06-28 01:35:06,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:06,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725853848] [2024-06-28 01:35:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:06,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:07,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:07,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725853848] [2024-06-28 01:35:07,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725853848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:07,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:07,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:07,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553695675] [2024-06-28 01:35:07,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:07,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:07,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:08,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:08,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 631 transitions, 10771 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:08,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:08,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:08,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:11,658 INFO L124 PetriNetUnfolderBase]: 8479/13784 cut-off events. [2024-06-28 01:35:11,658 INFO L125 PetriNetUnfolderBase]: For 687347/687550 co-relation queries the response was YES. [2024-06-28 01:35:11,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109542 conditions, 13784 events. 8479/13784 cut-off events. For 687347/687550 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 96220 event pairs, 2798 based on Foata normal form. 33/13484 useless extension candidates. Maximal degree in co-relation 109424. Up to 11396 conditions per place. [2024-06-28 01:35:12,006 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 491 selfloop transitions, 133 changer transitions 0/690 dead transitions. [2024-06-28 01:35:12,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 690 transitions, 12563 flow [2024-06-28 01:35:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-28 01:35:12,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2024-06-28 01:35:12,008 INFO L175 Difference]: Start difference. First operand has 271 places, 631 transitions, 10771 flow. Second operand 10 states and 262 transitions. [2024-06-28 01:35:12,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 690 transitions, 12563 flow [2024-06-28 01:35:13,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 690 transitions, 12093 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:13,428 INFO L231 Difference]: Finished difference. Result has 273 places, 633 transitions, 10654 flow [2024-06-28 01:35:13,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=10301, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10654, PETRI_PLACES=273, PETRI_TRANSITIONS=633} [2024-06-28 01:35:13,438 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 217 predicate places. [2024-06-28 01:35:13,438 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 633 transitions, 10654 flow [2024-06-28 01:35:13,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:13,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:13,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:13,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:35:13,438 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:13,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash -983255773, now seen corresponding path program 4 times [2024-06-28 01:35:13,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:13,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009874263] [2024-06-28 01:35:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:13,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat