./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016_power.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:03:03,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:03:03,187 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:03:03,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:03:03,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:03:03,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:03:03,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:03:03,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:03:03,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:03:03,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:03:03,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:03:03,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:03:03,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:03:03,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:03:03,238 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:03:03,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:03:03,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:03:03,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:03:03,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:03:03,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:03:03,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:03:03,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:03:03,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:03:03,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:03:03,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:03:03,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:03:03,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:03:03,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:03:03,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:03:03,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:03:03,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:03:03,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:03:03,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:03:03,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:03:03,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:03:03,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:03:03,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:03:03,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:03:03,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:03:03,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:03:03,246 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:03:03,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:03:03,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:03:03,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:03:03,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:03:03,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:03:03,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:03:03,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:03:03,519 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:03:03,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i [2024-06-28 03:03:04,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:03:04,920 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:03:04,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i [2024-06-28 03:03:04,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef52cbd87/cda4c6fafcc44c3280a9de57592aa516/FLAG89b79801f [2024-06-28 03:03:04,955 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef52cbd87/cda4c6fafcc44c3280a9de57592aa516 [2024-06-28 03:03:04,957 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:03:04,957 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:03:04,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016_power.opt_rmo.opt.yml/witness.yml [2024-06-28 03:03:05,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:03:05,170 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:03:05,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:03:05,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:03:05,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:03:05,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:03:04" (1/2) ... [2024-06-28 03:03:05,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3c2e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:03:05, skipping insertion in model container [2024-06-28 03:03:05,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:03:04" (1/2) ... [2024-06-28 03:03:05,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c959dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:03:05, skipping insertion in model container [2024-06-28 03:03:05,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:03:05" (2/2) ... [2024-06-28 03:03:05,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3c2e80 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05, skipping insertion in model container [2024-06-28 03:03:05,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:03:05" (2/2) ... [2024-06-28 03:03:05,181 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:03:05,284 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:03:05,286 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 03:03:05,286 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 03:03:05,286 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 03:03:05,287 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:03:05,287 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-28 03:03:05,336 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:03:05,750 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:03:05,761 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:03:05,897 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:03:05,939 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:03:05,939 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05 WrapperNode [2024-06-28 03:03:05,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:03:05,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:03:05,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:03:05,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:03:05,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:05,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,015 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 127 [2024-06-28 03:03:06,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:03:06,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:03:06,019 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:03:06,019 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:03:06,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,057 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,080 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 03:03:06,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:03:06,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:03:06,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:03:06,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:03:06,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (1/1) ... [2024-06-28 03:03:06,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:03:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:03:06,159 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 03:03:06,186 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 03:03:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:03:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:03:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:03:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:03:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:03:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:03:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:03:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:03:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:03:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:03:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:03:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:03:06,206 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 03:03:06,368 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:03:06,370 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:03:06,729 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:03:06,730 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:03:06,914 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:03:06,914 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:03:06,915 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:03:06 BoogieIcfgContainer [2024-06-28 03:03:06,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:03:06,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:03:06,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:03:06,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:03:06,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:03:04" (1/4) ... [2024-06-28 03:03:06,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7e2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:03:06, skipping insertion in model container [2024-06-28 03:03:06,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:03:05" (2/4) ... [2024-06-28 03:03:06,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7e2f4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:03:06, skipping insertion in model container [2024-06-28 03:03:06,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:05" (3/4) ... [2024-06-28 03:03:06,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7e2f4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:03:06, skipping insertion in model container [2024-06-28 03:03:06,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:03:06" (4/4) ... [2024-06-28 03:03:06,927 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016_power.opt_rmo.opt.i [2024-06-28 03:03:06,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:03:06,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:03:06,942 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:03:06,993 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:03:07,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:03:07,059 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 03:03:07,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:03:07,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:03:07,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:03:07,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 03:03:07,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:03:07,116 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;@5de3acb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:03:07,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:03:07,122 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:03:07,122 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:03:07,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:03:07,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:07,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:03:07,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:07,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash 365436942, now seen corresponding path program 1 times [2024-06-28 03:03:07,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:07,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966327225] [2024-06-28 03:03:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:07,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:08,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966327225] [2024-06-28 03:03:08,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966327225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:08,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:08,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:03:08,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893934128] [2024-06-28 03:03:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:08,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:03:08,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:03:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:03:08,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-28 03:03:08,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 03:03:08,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:08,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-28 03:03:08,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:08,717 INFO L124 PetriNetUnfolderBase]: 946/1551 cut-off events. [2024-06-28 03:03:08,717 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 03:03:08,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3057 conditions, 1551 events. 946/1551 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7745 event pairs, 638 based on Foata normal form. 1/1490 useless extension candidates. Maximal degree in co-relation 3045. Up to 1431 conditions per place. [2024-06-28 03:03:08,733 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 30 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 03:03:08,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 167 flow [2024-06-28 03:03:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:03:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:03:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 03:03:08,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2024-06-28 03:03:08,745 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 79 transitions. [2024-06-28 03:03:08,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 167 flow [2024-06-28 03:03:08,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:08,749 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 03:03:08,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 03:03:08,754 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 03:03:08,754 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 03:03:08,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 03:03:08,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:08,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:08,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:03:08,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:08,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1002400659, now seen corresponding path program 1 times [2024-06-28 03:03:08,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:08,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801197526] [2024-06-28 03:03:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:08,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:09,294 INFO 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 03:03:09,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801197526] [2024-06-28 03:03:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801197526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:09,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:03:09,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180686920] [2024-06-28 03:03:09,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:09,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:03:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:09,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:03:09,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:03:09,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 03:03:09,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 03:03:09,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:09,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 03:03:09,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:09,635 INFO L124 PetriNetUnfolderBase]: 1104/1745 cut-off events. [2024-06-28 03:03:09,635 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-06-28 03:03:09,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3951 conditions, 1745 events. 1104/1745 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8495 event pairs, 517 based on Foata normal form. 6/1748 useless extension candidates. Maximal degree in co-relation 3939. Up to 1628 conditions per place. [2024-06-28 03:03:09,646 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 39 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-28 03:03:09,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 240 flow [2024-06-28 03:03:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:03:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:03:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-28 03:03:09,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-06-28 03:03:09,651 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 101 transitions. [2024-06-28 03:03:09,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 240 flow [2024-06-28 03:03:09,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:03:09,655 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-28 03:03:09,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:03:09,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 03:03:09,656 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-28 03:03:09,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 03:03:09,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:09,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:09,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:03:09,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:09,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash 390145838, now seen corresponding path program 1 times [2024-06-28 03:03:09,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112185177] [2024-06-28 03:03:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:10,958 INFO 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 03:03:10,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:10,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112185177] [2024-06-28 03:03:10,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112185177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:10,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:10,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:03:10,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520096440] [2024-06-28 03:03:10,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:03:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:03:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:03:11,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 03:03:11,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:03:11,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:11,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 03:03:11,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:11,486 INFO L124 PetriNetUnfolderBase]: 1095/1728 cut-off events. [2024-06-28 03:03:11,487 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-06-28 03:03:11,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4370 conditions, 1728 events. 1095/1728 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8356 event pairs, 375 based on Foata normal form. 6/1731 useless extension candidates. Maximal degree in co-relation 4356. Up to 1583 conditions per place. [2024-06-28 03:03:11,500 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 49 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-28 03:03:11,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 346 flow [2024-06-28 03:03:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 03:03:11,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2024-06-28 03:03:11,507 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 6 states and 142 transitions. [2024-06-28 03:03:11,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 346 flow [2024-06-28 03:03:11,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 326 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 03:03:11,512 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 179 flow [2024-06-28 03:03:11,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-28 03:03:11,513 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-28 03:03:11,514 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 179 flow [2024-06-28 03:03:11,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:03:11,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:11,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:11,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:03:11,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:11,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash 292940758, now seen corresponding path program 1 times [2024-06-28 03:03:11,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:11,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645642375] [2024-06-28 03:03:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:12,310 INFO 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 03:03:12,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:12,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645642375] [2024-06-28 03:03:12,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645642375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:12,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:12,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:03:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633617311] [2024-06-28 03:03:12,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:12,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:03:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:12,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:03:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:03:12,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:03:12,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:12,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:12,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:03:12,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:12,725 INFO L124 PetriNetUnfolderBase]: 920/1574 cut-off events. [2024-06-28 03:03:12,725 INFO L125 PetriNetUnfolderBase]: For 1518/1518 co-relation queries the response was YES. [2024-06-28 03:03:12,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4239 conditions, 1574 events. 920/1574 cut-off events. For 1518/1518 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8095 event pairs, 378 based on Foata normal form. 2/1567 useless extension candidates. Maximal degree in co-relation 4222. Up to 1382 conditions per place. [2024-06-28 03:03:12,737 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 41 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-28 03:03:12,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 319 flow [2024-06-28 03:03:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:03:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:03:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-06-28 03:03:12,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024390243902439 [2024-06-28 03:03:12,740 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 179 flow. Second operand 5 states and 103 transitions. [2024-06-28 03:03:12,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 319 flow [2024-06-28 03:03:12,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 292 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:12,745 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 196 flow [2024-06-28 03:03:12,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 03:03:12,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-28 03:03:12,747 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 196 flow [2024-06-28 03:03:12,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:12,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:12,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:12,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:03:12,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:12,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1957448587, now seen corresponding path program 1 times [2024-06-28 03:03:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:12,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319922862] [2024-06-28 03:03:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:13,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:13,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319922862] [2024-06-28 03:03:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319922862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:13,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:13,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:13,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098897583] [2024-06-28 03:03:13,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:13,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:13,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:13,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:13,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:13,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:13,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:13,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:14,123 INFO L124 PetriNetUnfolderBase]: 1112/1777 cut-off events. [2024-06-28 03:03:14,124 INFO L125 PetriNetUnfolderBase]: For 2711/2711 co-relation queries the response was YES. [2024-06-28 03:03:14,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 1777 events. 1112/1777 cut-off events. For 2711/2711 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8692 event pairs, 448 based on Foata normal form. 4/1778 useless extension candidates. Maximal degree in co-relation 5294. Up to 1635 conditions per place. [2024-06-28 03:03:14,137 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 50 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-06-28 03:03:14,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 386 flow [2024-06-28 03:03:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 03:03:14,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-06-28 03:03:14,139 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 196 flow. Second operand 6 states and 121 transitions. [2024-06-28 03:03:14,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 386 flow [2024-06-28 03:03:14,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 366 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:14,148 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 230 flow [2024-06-28 03:03:14,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 03:03:14,150 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-06-28 03:03:14,150 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 230 flow [2024-06-28 03:03:14,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:14,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:14,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:14,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:03:14,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:14,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1951734667, now seen corresponding path program 2 times [2024-06-28 03:03:14,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:14,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520347298] [2024-06-28 03:03:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:15,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:15,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520347298] [2024-06-28 03:03:15,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520347298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:15,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:15,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:15,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934064236] [2024-06-28 03:03:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:15,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:15,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:15,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:15,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:15,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:15,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:15,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:15,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:15,490 INFO L124 PetriNetUnfolderBase]: 1118/1802 cut-off events. [2024-06-28 03:03:15,491 INFO L125 PetriNetUnfolderBase]: For 3961/3964 co-relation queries the response was YES. [2024-06-28 03:03:15,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 1802 events. 1118/1802 cut-off events. For 3961/3964 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8893 event pairs, 443 based on Foata normal form. 6/1803 useless extension candidates. Maximal degree in co-relation 5800. Up to 1617 conditions per place. [2024-06-28 03:03:15,505 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 46 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-28 03:03:15,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 444 flow [2024-06-28 03:03:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:03:15,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46689895470383275 [2024-06-28 03:03:15,507 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 230 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:03:15,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 444 flow [2024-06-28 03:03:15,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 410 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:15,512 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 286 flow [2024-06-28 03:03:15,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 03:03:15,515 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-28 03:03:15,515 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 286 flow [2024-06-28 03:03:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:15,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:15,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:15,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:03:15,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:15,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1951726731, now seen corresponding path program 1 times [2024-06-28 03:03:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:15,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732584630] [2024-06-28 03:03:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:15,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:16,578 INFO 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 03:03:16,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:16,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732584630] [2024-06-28 03:03:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732584630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:16,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:16,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:16,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358787190] [2024-06-28 03:03:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:16,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:16,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:16,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:16,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:16,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:16,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:03:16,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:16,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:16,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:17,198 INFO L124 PetriNetUnfolderBase]: 1172/1960 cut-off events. [2024-06-28 03:03:17,198 INFO L125 PetriNetUnfolderBase]: For 5276/5276 co-relation queries the response was YES. [2024-06-28 03:03:17,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6559 conditions, 1960 events. 1172/1960 cut-off events. For 5276/5276 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10116 event pairs, 444 based on Foata normal form. 2/1949 useless extension candidates. Maximal degree in co-relation 6537. Up to 1733 conditions per place. [2024-06-28 03:03:17,213 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 58 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-28 03:03:17,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 78 transitions, 518 flow [2024-06-28 03:03:17,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:03:17,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 03:03:17,215 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 286 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:03:17,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 78 transitions, 518 flow [2024-06-28 03:03:17,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 474 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:17,221 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 327 flow [2024-06-28 03:03:17,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-28 03:03:17,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-28 03:03:17,222 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 327 flow [2024-06-28 03:03:17,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:03:17,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:17,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:17,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:03:17,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:17,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash -551482761, now seen corresponding path program 1 times [2024-06-28 03:03:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:17,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150590651] [2024-06-28 03:03:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:18,384 INFO 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 03:03:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150590651] [2024-06-28 03:03:18,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150590651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:18,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:18,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:18,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201151133] [2024-06-28 03:03:18,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:18,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:18,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:18,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:18,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:18,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 327 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:03:18,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:18,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:18,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:19,090 INFO L124 PetriNetUnfolderBase]: 1289/2061 cut-off events. [2024-06-28 03:03:19,090 INFO L125 PetriNetUnfolderBase]: For 7614/7614 co-relation queries the response was YES. [2024-06-28 03:03:19,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 2061 events. 1289/2061 cut-off events. For 7614/7614 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10308 event pairs, 467 based on Foata normal form. 2/2060 useless extension candidates. Maximal degree in co-relation 7565. Up to 1883 conditions per place. [2024-06-28 03:03:19,116 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 64 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-28 03:03:19,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 86 transitions, 584 flow [2024-06-28 03:03:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 03:03:19,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4912891986062718 [2024-06-28 03:03:19,118 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 327 flow. Second operand 7 states and 141 transitions. [2024-06-28 03:03:19,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 86 transitions, 584 flow [2024-06-28 03:03:19,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 546 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:19,124 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 365 flow [2024-06-28 03:03:19,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=365, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-28 03:03:19,126 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-28 03:03:19,126 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 365 flow [2024-06-28 03:03:19,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:03:19,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:19,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:19,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:03:19,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:19,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:19,127 INFO L85 PathProgramCache]: Analyzing trace with hash -373985007, now seen corresponding path program 1 times [2024-06-28 03:03:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:19,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385767243] [2024-06-28 03:03:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:20,338 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 03:03:20,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:20,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385767243] [2024-06-28 03:03:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385767243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:20,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:20,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380433548] [2024-06-28 03:03:20,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:20,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:20,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:20,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:20,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 365 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:20,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:20,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:20,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:20,869 INFO L124 PetriNetUnfolderBase]: 1154/1926 cut-off events. [2024-06-28 03:03:20,870 INFO L125 PetriNetUnfolderBase]: For 8267/8267 co-relation queries the response was YES. [2024-06-28 03:03:20,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7181 conditions, 1926 events. 1154/1926 cut-off events. For 8267/8267 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9863 event pairs, 415 based on Foata normal form. 4/1913 useless extension candidates. Maximal degree in co-relation 7155. Up to 1689 conditions per place. [2024-06-28 03:03:20,887 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 66 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-28 03:03:20,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 618 flow [2024-06-28 03:03:20,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:20,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:03:20,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 03:03:20,889 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 365 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:03:20,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 88 transitions, 618 flow [2024-06-28 03:03:20,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 566 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:20,897 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 382 flow [2024-06-28 03:03:20,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=382, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-06-28 03:03:20,898 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-28 03:03:20,898 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 382 flow [2024-06-28 03:03:20,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:20,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:20,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:20,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:03:20,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:20,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1304265577, now seen corresponding path program 1 times [2024-06-28 03:03:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:20,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186150610] [2024-06-28 03:03:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:20,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:21,599 INFO 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 03:03:21,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:21,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186150610] [2024-06-28 03:03:21,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186150610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:21,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:21,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:03:21,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172828545] [2024-06-28 03:03:21,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:21,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:03:21,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:21,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:03:21,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:03:21,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:21,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:03:21,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:21,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:21,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:22,116 INFO L124 PetriNetUnfolderBase]: 1358/2143 cut-off events. [2024-06-28 03:03:22,116 INFO L125 PetriNetUnfolderBase]: For 11573/11573 co-relation queries the response was YES. [2024-06-28 03:03:22,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8462 conditions, 2143 events. 1358/2143 cut-off events. For 11573/11573 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10489 event pairs, 519 based on Foata normal form. 1/2141 useless extension candidates. Maximal degree in co-relation 8435. Up to 2024 conditions per place. [2024-06-28 03:03:22,130 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 62 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-06-28 03:03:22,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 565 flow [2024-06-28 03:03:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:03:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:03:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-28 03:03:22,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390243902439025 [2024-06-28 03:03:22,132 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 382 flow. Second operand 5 states and 91 transitions. [2024-06-28 03:03:22,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 565 flow [2024-06-28 03:03:22,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 514 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:22,138 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 379 flow [2024-06-28 03:03:22,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-28 03:03:22,139 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-28 03:03:22,139 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 379 flow [2024-06-28 03:03:22,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:03:22,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:22,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:03:22,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:22,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash 87629908, now seen corresponding path program 1 times [2024-06-28 03:03:22,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:22,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224662049] [2024-06-28 03:03:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:23,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224662049] [2024-06-28 03:03:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224662049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:23,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:23,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225547033] [2024-06-28 03:03:23,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:23,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:23,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:23,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:23,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:23,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:23,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 379 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:23,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:23,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:23,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:24,028 INFO L124 PetriNetUnfolderBase]: 1460/2264 cut-off events. [2024-06-28 03:03:24,028 INFO L125 PetriNetUnfolderBase]: For 15951/15951 co-relation queries the response was YES. [2024-06-28 03:03:24,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9571 conditions, 2264 events. 1460/2264 cut-off events. For 15951/15951 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10948 event pairs, 514 based on Foata normal form. 4/2265 useless extension candidates. Maximal degree in co-relation 9543. Up to 2066 conditions per place. [2024-06-28 03:03:24,044 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 76 selfloop transitions, 19 changer transitions 0/101 dead transitions. [2024-06-28 03:03:24,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 694 flow [2024-06-28 03:03:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:03:24,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:03:24,047 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 379 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:03:24,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 694 flow [2024-06-28 03:03:24,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 668 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:24,055 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 464 flow [2024-06-28 03:03:24,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=464, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-06-28 03:03:24,056 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-28 03:03:24,056 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 464 flow [2024-06-28 03:03:24,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:24,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:24,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:24,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:03:24,057 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:24,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1283739732, now seen corresponding path program 2 times [2024-06-28 03:03:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:24,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955930460] [2024-06-28 03:03:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:24,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:25,239 INFO 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 03:03:25,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:25,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955930460] [2024-06-28 03:03:25,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955930460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:25,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:25,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:25,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563093425] [2024-06-28 03:03:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:25,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:25,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:25,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:25,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 464 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:25,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:25,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:25,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:25,825 INFO L124 PetriNetUnfolderBase]: 1504/2330 cut-off events. [2024-06-28 03:03:25,826 INFO L125 PetriNetUnfolderBase]: For 19567/19570 co-relation queries the response was YES. [2024-06-28 03:03:25,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10657 conditions, 2330 events. 1504/2330 cut-off events. For 19567/19570 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11293 event pairs, 521 based on Foata normal form. 6/2331 useless extension candidates. Maximal degree in co-relation 10627. Up to 2053 conditions per place. [2024-06-28 03:03:25,845 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 72 selfloop transitions, 29 changer transitions 0/107 dead transitions. [2024-06-28 03:03:25,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 804 flow [2024-06-28 03:03:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:03:25,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2024-06-28 03:03:25,847 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 464 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:03:25,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 804 flow [2024-06-28 03:03:25,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 741 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:25,864 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 548 flow [2024-06-28 03:03:25,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=548, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-06-28 03:03:25,865 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-28 03:03:25,865 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 548 flow [2024-06-28 03:03:25,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:25,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:25,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:25,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:03:25,867 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:25,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 864702626, now seen corresponding path program 3 times [2024-06-28 03:03:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:25,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55804335] [2024-06-28 03:03:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:26,959 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 03:03:26,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:26,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55804335] [2024-06-28 03:03:26,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55804335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:26,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:26,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:26,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835773486] [2024-06-28 03:03:26,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:26,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:26,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:27,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:27,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 548 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:27,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:27,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:27,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:27,585 INFO L124 PetriNetUnfolderBase]: 1510/2339 cut-off events. [2024-06-28 03:03:27,585 INFO L125 PetriNetUnfolderBase]: For 23522/23525 co-relation queries the response was YES. [2024-06-28 03:03:27,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11474 conditions, 2339 events. 1510/2339 cut-off events. For 23522/23525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11320 event pairs, 516 based on Foata normal form. 6/2340 useless extension candidates. Maximal degree in co-relation 11442. Up to 2012 conditions per place. [2024-06-28 03:03:27,603 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 68 selfloop transitions, 43 changer transitions 0/117 dead transitions. [2024-06-28 03:03:27,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 928 flow [2024-06-28 03:03:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:03:27,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 03:03:27,605 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 548 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:03:27,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 928 flow [2024-06-28 03:03:27,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 831 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:27,620 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 623 flow [2024-06-28 03:03:27,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=623, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-06-28 03:03:27,621 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-28 03:03:27,621 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 623 flow [2024-06-28 03:03:27,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:27,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:27,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:27,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:03:27,622 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1777525919, now seen corresponding path program 1 times [2024-06-28 03:03:27,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:27,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969562107] [2024-06-28 03:03:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:27,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:28,396 INFO 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 03:03:28,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969562107] [2024-06-28 03:03:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969562107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:28,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:28,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:28,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189261839] [2024-06-28 03:03:28,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:28,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:28,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:28,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:28,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 623 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 03:03:28,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:28,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:28,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:28,891 INFO L124 PetriNetUnfolderBase]: 1424/2239 cut-off events. [2024-06-28 03:03:28,891 INFO L125 PetriNetUnfolderBase]: For 23091/23091 co-relation queries the response was YES. [2024-06-28 03:03:28,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11234 conditions, 2239 events. 1424/2239 cut-off events. For 23091/23091 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10906 event pairs, 484 based on Foata normal form. 2/2238 useless extension candidates. Maximal degree in co-relation 11201. Up to 2115 conditions per place. [2024-06-28 03:03:28,907 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 85 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2024-06-28 03:03:28,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 866 flow [2024-06-28 03:03:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:03:28,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:03:28,909 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 623 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:03:28,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 866 flow [2024-06-28 03:03:28,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 754 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:28,922 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 569 flow [2024-06-28 03:03:28,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=569, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2024-06-28 03:03:28,923 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-06-28 03:03:28,923 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 569 flow [2024-06-28 03:03:28,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 03:03:28,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:28,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:28,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:03:28,924 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:28,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash 745520428, now seen corresponding path program 1 times [2024-06-28 03:03:28,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:28,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569745717] [2024-06-28 03:03:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:28,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:30,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:30,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569745717] [2024-06-28 03:03:30,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569745717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:30,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:30,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117113099] [2024-06-28 03:03:30,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:30,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:30,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:30,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 569 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:30,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:30,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:30,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:30,771 INFO L124 PetriNetUnfolderBase]: 1457/2281 cut-off events. [2024-06-28 03:03:30,771 INFO L125 PetriNetUnfolderBase]: For 28842/28858 co-relation queries the response was YES. [2024-06-28 03:03:30,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12072 conditions, 2281 events. 1457/2281 cut-off events. For 28842/28858 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11408 event pairs, 347 based on Foata normal form. 4/2266 useless extension candidates. Maximal degree in co-relation 12038. Up to 2050 conditions per place. [2024-06-28 03:03:30,786 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 97 selfloop transitions, 16 changer transitions 0/123 dead transitions. [2024-06-28 03:03:30,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 912 flow [2024-06-28 03:03:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:03:30,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2024-06-28 03:03:30,788 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 569 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:03:30,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 912 flow [2024-06-28 03:03:30,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 876 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:30,801 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 612 flow [2024-06-28 03:03:30,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=612, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-06-28 03:03:30,802 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 03:03:30,802 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 612 flow [2024-06-28 03:03:30,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:30,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:30,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:30,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:03:30,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:30,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash 748377388, now seen corresponding path program 2 times [2024-06-28 03:03:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:30,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033682013] [2024-06-28 03:03:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:31,985 INFO 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 03:03:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033682013] [2024-06-28 03:03:31,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033682013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:31,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:31,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:31,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643387704] [2024-06-28 03:03:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:31,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:31,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:31,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:32,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:32,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 612 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:32,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:32,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:32,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:32,664 INFO L124 PetriNetUnfolderBase]: 1458/2304 cut-off events. [2024-06-28 03:03:32,664 INFO L125 PetriNetUnfolderBase]: For 32771/32787 co-relation queries the response was YES. [2024-06-28 03:03:32,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12561 conditions, 2304 events. 1458/2304 cut-off events. For 32771/32787 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11693 event pairs, 432 based on Foata normal form. 4/2295 useless extension candidates. Maximal degree in co-relation 12526. Up to 2082 conditions per place. [2024-06-28 03:03:32,679 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 97 selfloop transitions, 17 changer transitions 0/124 dead transitions. [2024-06-28 03:03:32,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 124 transitions, 959 flow [2024-06-28 03:03:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:03:32,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2024-06-28 03:03:32,681 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 612 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:03:32,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 124 transitions, 959 flow [2024-06-28 03:03:32,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 898 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:32,701 INFO L231 Difference]: Finished difference. Result has 89 places, 95 transitions, 636 flow [2024-06-28 03:03:32,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=89, PETRI_TRANSITIONS=95} [2024-06-28 03:03:32,702 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-06-28 03:03:32,702 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 95 transitions, 636 flow [2024-06-28 03:03:32,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:32,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:32,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:32,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:03:32,703 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:32,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:32,703 INFO L85 PathProgramCache]: Analyzing trace with hash -395849970, now seen corresponding path program 3 times [2024-06-28 03:03:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462188894] [2024-06-28 03:03:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:32,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:33,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462188894] [2024-06-28 03:03:33,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462188894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:33,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:33,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:33,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086731935] [2024-06-28 03:03:33,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:33,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:33,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:33,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:33,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:33,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:33,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 95 transitions, 636 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:33,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:33,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:33,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:34,427 INFO L124 PetriNetUnfolderBase]: 1491/2353 cut-off events. [2024-06-28 03:03:34,427 INFO L125 PetriNetUnfolderBase]: For 38577/38577 co-relation queries the response was YES. [2024-06-28 03:03:34,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13197 conditions, 2353 events. 1491/2353 cut-off events. For 38577/38577 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11960 event pairs, 413 based on Foata normal form. 8/2355 useless extension candidates. Maximal degree in co-relation 13161. Up to 2118 conditions per place. [2024-06-28 03:03:34,444 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 97 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-28 03:03:34,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 127 transitions, 1009 flow [2024-06-28 03:03:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:03:34,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 03:03:34,446 INFO L175 Difference]: Start difference. First operand has 89 places, 95 transitions, 636 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:03:34,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 127 transitions, 1009 flow [2024-06-28 03:03:34,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 127 transitions, 942 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:34,474 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 698 flow [2024-06-28 03:03:34,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2024-06-28 03:03:34,475 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-28 03:03:34,475 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 698 flow [2024-06-28 03:03:34,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:34,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:34,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:34,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:03:34,476 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:34,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:34,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1693909546, now seen corresponding path program 1 times [2024-06-28 03:03:34,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:34,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337410938] [2024-06-28 03:03:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:36,059 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 03:03:36,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:36,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337410938] [2024-06-28 03:03:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337410938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:36,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:36,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683184592] [2024-06-28 03:03:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:36,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:36,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:36,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:36,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:36,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 698 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:36,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:36,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:36,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:36,820 INFO L124 PetriNetUnfolderBase]: 1622/2526 cut-off events. [2024-06-28 03:03:36,820 INFO L125 PetriNetUnfolderBase]: For 42524/42524 co-relation queries the response was YES. [2024-06-28 03:03:36,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14213 conditions, 2526 events. 1622/2526 cut-off events. For 42524/42524 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12487 event pairs, 444 based on Foata normal form. 2/2525 useless extension candidates. Maximal degree in co-relation 14175. Up to 2330 conditions per place. [2024-06-28 03:03:36,837 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 112 selfloop transitions, 21 changer transitions 0/139 dead transitions. [2024-06-28 03:03:36,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1127 flow [2024-06-28 03:03:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:03:36,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 03:03:36,840 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 698 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:03:36,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1127 flow [2024-06-28 03:03:36,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1054 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:36,867 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 763 flow [2024-06-28 03:03:36,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=763, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-06-28 03:03:36,868 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-28 03:03:36,868 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 763 flow [2024-06-28 03:03:36,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:36,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:36,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:36,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:03:36,869 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:36,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:36,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1578438886, now seen corresponding path program 2 times [2024-06-28 03:03:36,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:36,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309577409] [2024-06-28 03:03:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309577409] [2024-06-28 03:03:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309577409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:38,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030070152] [2024-06-28 03:03:38,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:38,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:38,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:38,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 763 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:38,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:38,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:38,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:38,691 INFO L124 PetriNetUnfolderBase]: 1633/2542 cut-off events. [2024-06-28 03:03:38,691 INFO L125 PetriNetUnfolderBase]: For 47014/47014 co-relation queries the response was YES. [2024-06-28 03:03:38,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14767 conditions, 2542 events. 1633/2542 cut-off events. For 47014/47014 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12565 event pairs, 439 based on Foata normal form. 2/2541 useless extension candidates. Maximal degree in co-relation 14727. Up to 2278 conditions per place. [2024-06-28 03:03:38,708 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 100 selfloop transitions, 35 changer transitions 0/141 dead transitions. [2024-06-28 03:03:38,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 141 transitions, 1183 flow [2024-06-28 03:03:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:03:38,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 03:03:38,710 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 763 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:03:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 141 transitions, 1183 flow [2024-06-28 03:03:38,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 141 transitions, 1089 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:38,736 INFO L231 Difference]: Finished difference. Result has 101 places, 110 transitions, 817 flow [2024-06-28 03:03:38,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=817, PETRI_PLACES=101, PETRI_TRANSITIONS=110} [2024-06-28 03:03:38,737 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-28 03:03:38,737 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 110 transitions, 817 flow [2024-06-28 03:03:38,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:38,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:38,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:03:38,738 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:38,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1578438638, now seen corresponding path program 1 times [2024-06-28 03:03:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:38,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473633354] [2024-06-28 03:03:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:39,935 INFO 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 03:03:39,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:39,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473633354] [2024-06-28 03:03:39,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473633354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:39,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:39,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:39,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970775434] [2024-06-28 03:03:39,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:39,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:39,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:39,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:39,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:40,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:40,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 110 transitions, 817 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:40,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:40,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:40,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:40,611 INFO L124 PetriNetUnfolderBase]: 1731/2700 cut-off events. [2024-06-28 03:03:40,611 INFO L125 PetriNetUnfolderBase]: For 58678/58678 co-relation queries the response was YES. [2024-06-28 03:03:40,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16149 conditions, 2700 events. 1731/2700 cut-off events. For 58678/58678 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13586 event pairs, 456 based on Foata normal form. 20/2714 useless extension candidates. Maximal degree in co-relation 16108. Up to 2351 conditions per place. [2024-06-28 03:03:40,625 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 117 selfloop transitions, 25 changer transitions 0/148 dead transitions. [2024-06-28 03:03:40,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 148 transitions, 1277 flow [2024-06-28 03:03:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:03:40,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-28 03:03:40,628 INFO L175 Difference]: Start difference. First operand has 101 places, 110 transitions, 817 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:03:40,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 148 transitions, 1277 flow [2024-06-28 03:03:40,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 148 transitions, 1153 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:40,653 INFO L231 Difference]: Finished difference. Result has 103 places, 113 transitions, 811 flow [2024-06-28 03:03:40,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=811, PETRI_PLACES=103, PETRI_TRANSITIONS=113} [2024-06-28 03:03:40,654 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-06-28 03:03:40,654 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 113 transitions, 811 flow [2024-06-28 03:03:40,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:40,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:40,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:40,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:03:40,655 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:40,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1977626206, now seen corresponding path program 1 times [2024-06-28 03:03:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:40,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875753361] [2024-06-28 03:03:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:40,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:41,323 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 03:03:41,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:41,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875753361] [2024-06-28 03:03:41,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875753361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:41,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:41,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908443564] [2024-06-28 03:03:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:41,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:03:41,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 113 transitions, 811 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 03:03:41,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:41,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:03:41,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:41,906 INFO L124 PetriNetUnfolderBase]: 1854/2834 cut-off events. [2024-06-28 03:03:41,906 INFO L125 PetriNetUnfolderBase]: For 61345/61345 co-relation queries the response was YES. [2024-06-28 03:03:41,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17215 conditions, 2834 events. 1854/2834 cut-off events. For 61345/61345 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13886 event pairs, 496 based on Foata normal form. 2/2833 useless extension candidates. Maximal degree in co-relation 17173. Up to 2727 conditions per place. [2024-06-28 03:03:41,926 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 115 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-06-28 03:03:41,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 137 transitions, 1262 flow [2024-06-28 03:03:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 03:03:41,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 03:03:41,927 INFO L175 Difference]: Start difference. First operand has 103 places, 113 transitions, 811 flow. Second operand 6 states and 111 transitions. [2024-06-28 03:03:41,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 137 transitions, 1262 flow [2024-06-28 03:03:41,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 137 transitions, 1202 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:41,954 INFO L231 Difference]: Finished difference. Result has 102 places, 119 transitions, 872 flow [2024-06-28 03:03:41,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=872, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2024-06-28 03:03:41,954 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2024-06-28 03:03:41,954 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 872 flow [2024-06-28 03:03:41,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 03:03:41,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:41,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:41,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:03:41,955 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:41,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1141042840, now seen corresponding path program 4 times [2024-06-28 03:03:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:41,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955660110] [2024-06-28 03:03:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:41,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:43,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955660110] [2024-06-28 03:03:43,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955660110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:43,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:43,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:43,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754078988] [2024-06-28 03:03:43,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:43,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:43,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:43,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:43,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 872 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:43,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:43,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:43,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:43,685 INFO L124 PetriNetUnfolderBase]: 1614/2563 cut-off events. [2024-06-28 03:03:43,685 INFO L125 PetriNetUnfolderBase]: For 64087/64090 co-relation queries the response was YES. [2024-06-28 03:03:43,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16096 conditions, 2563 events. 1614/2563 cut-off events. For 64087/64090 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13337 event pairs, 408 based on Foata normal form. 10/2563 useless extension candidates. Maximal degree in co-relation 16053. Up to 2253 conditions per place. [2024-06-28 03:03:43,700 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 100 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2024-06-28 03:03:43,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 150 transitions, 1302 flow [2024-06-28 03:03:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:03:43,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 03:03:43,702 INFO L175 Difference]: Start difference. First operand has 102 places, 119 transitions, 872 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:03:43,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 150 transitions, 1302 flow [2024-06-28 03:03:43,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 150 transitions, 1270 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 03:03:43,737 INFO L231 Difference]: Finished difference. Result has 109 places, 127 transitions, 1035 flow [2024-06-28 03:03:43,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1035, PETRI_PLACES=109, PETRI_TRANSITIONS=127} [2024-06-28 03:03:43,738 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-06-28 03:03:43,738 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 127 transitions, 1035 flow [2024-06-28 03:03:43,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:43,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:43,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:43,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:03:43,739 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:43,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1377402650, now seen corresponding path program 3 times [2024-06-28 03:03:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:43,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455011668] [2024-06-28 03:03:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:44,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:44,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455011668] [2024-06-28 03:03:44,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455011668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:44,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:44,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960218385] [2024-06-28 03:03:44,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:44,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:44,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:44,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:44,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:44,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:44,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 127 transitions, 1035 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:44,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:44,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:44,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:45,700 INFO L124 PetriNetUnfolderBase]: 1745/2719 cut-off events. [2024-06-28 03:03:45,701 INFO L125 PetriNetUnfolderBase]: For 70441/70444 co-relation queries the response was YES. [2024-06-28 03:03:45,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17386 conditions, 2719 events. 1745/2719 cut-off events. For 70441/70444 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13788 event pairs, 455 based on Foata normal form. 4/2718 useless extension candidates. Maximal degree in co-relation 17340. Up to 2344 conditions per place. [2024-06-28 03:03:45,715 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 105 selfloop transitions, 59 changer transitions 0/172 dead transitions. [2024-06-28 03:03:45,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 172 transitions, 1726 flow [2024-06-28 03:03:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 03:03:45,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458980044345898 [2024-06-28 03:03:45,717 INFO L175 Difference]: Start difference. First operand has 109 places, 127 transitions, 1035 flow. Second operand 11 states and 207 transitions. [2024-06-28 03:03:45,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 172 transitions, 1726 flow [2024-06-28 03:03:45,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 172 transitions, 1588 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:45,749 INFO L231 Difference]: Finished difference. Result has 117 places, 134 transitions, 1216 flow [2024-06-28 03:03:45,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1216, PETRI_PLACES=117, PETRI_TRANSITIONS=134} [2024-06-28 03:03:45,750 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2024-06-28 03:03:45,750 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 134 transitions, 1216 flow [2024-06-28 03:03:45,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:45,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:45,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:45,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:03:45,750 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:45,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1141227290, now seen corresponding path program 4 times [2024-06-28 03:03:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:45,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9836548] [2024-06-28 03:03:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:45,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:46,771 INFO 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 03:03:46,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9836548] [2024-06-28 03:03:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9836548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:46,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:46,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409003226] [2024-06-28 03:03:46,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:46,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:46,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:46,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:46,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:46,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 134 transitions, 1216 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:46,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:46,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:46,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:47,474 INFO L124 PetriNetUnfolderBase]: 1740/2715 cut-off events. [2024-06-28 03:03:47,474 INFO L125 PetriNetUnfolderBase]: For 74546/74546 co-relation queries the response was YES. [2024-06-28 03:03:47,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17614 conditions, 2715 events. 1740/2715 cut-off events. For 74546/74546 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13754 event pairs, 466 based on Foata normal form. 2/2711 useless extension candidates. Maximal degree in co-relation 17566. Up to 2374 conditions per place. [2024-06-28 03:03:47,490 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 106 selfloop transitions, 48 changer transitions 0/162 dead transitions. [2024-06-28 03:03:47,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 162 transitions, 1601 flow [2024-06-28 03:03:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:03:47,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 03:03:47,492 INFO L175 Difference]: Start difference. First operand has 117 places, 134 transitions, 1216 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:03:47,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 162 transitions, 1601 flow [2024-06-28 03:03:47,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 162 transitions, 1433 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:47,540 INFO L231 Difference]: Finished difference. Result has 120 places, 134 transitions, 1152 flow [2024-06-28 03:03:47,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1152, PETRI_PLACES=120, PETRI_TRANSITIONS=134} [2024-06-28 03:03:47,541 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2024-06-28 03:03:47,541 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 134 transitions, 1152 flow [2024-06-28 03:03:47,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:47,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:47,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:47,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:03:47,542 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:47,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1377699568, now seen corresponding path program 2 times [2024-06-28 03:03:47,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:47,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416576937] [2024-06-28 03:03:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:47,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:48,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:48,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416576937] [2024-06-28 03:03:48,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416576937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:48,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:48,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796227073] [2024-06-28 03:03:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:48,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:48,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:48,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 134 transitions, 1152 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:48,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:48,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:48,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:49,345 INFO L124 PetriNetUnfolderBase]: 1860/2908 cut-off events. [2024-06-28 03:03:49,345 INFO L125 PetriNetUnfolderBase]: For 86025/86028 co-relation queries the response was YES. [2024-06-28 03:03:49,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19433 conditions, 2908 events. 1860/2908 cut-off events. For 86025/86028 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14957 event pairs, 454 based on Foata normal form. 6/2909 useless extension candidates. Maximal degree in co-relation 19383. Up to 2183 conditions per place. [2024-06-28 03:03:49,363 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 109 selfloop transitions, 59 changer transitions 0/176 dead transitions. [2024-06-28 03:03:49,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 176 transitions, 1834 flow [2024-06-28 03:03:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:03:49,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-28 03:03:49,365 INFO L175 Difference]: Start difference. First operand has 120 places, 134 transitions, 1152 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:03:49,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 176 transitions, 1834 flow [2024-06-28 03:03:49,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 176 transitions, 1700 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:49,405 INFO L231 Difference]: Finished difference. Result has 122 places, 139 transitions, 1287 flow [2024-06-28 03:03:49,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1287, PETRI_PLACES=122, PETRI_TRANSITIONS=139} [2024-06-28 03:03:49,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-28 03:03:49,406 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 139 transitions, 1287 flow [2024-06-28 03:03:49,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:49,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:49,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:49,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:03:49,407 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:49,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1715624072, now seen corresponding path program 3 times [2024-06-28 03:03:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:49,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930161670] [2024-06-28 03:03:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:50,530 INFO 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 03:03:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930161670] [2024-06-28 03:03:50,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930161670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:50,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:50,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:50,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168941296] [2024-06-28 03:03:50,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:50,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:50,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:50,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:50,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 139 transitions, 1287 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:50,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:50,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:50,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:51,225 INFO L124 PetriNetUnfolderBase]: 1963/3076 cut-off events. [2024-06-28 03:03:51,225 INFO L125 PetriNetUnfolderBase]: For 102003/102006 co-relation queries the response was YES. [2024-06-28 03:03:51,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21086 conditions, 3076 events. 1963/3076 cut-off events. For 102003/102006 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16083 event pairs, 501 based on Foata normal form. 22/3093 useless extension candidates. Maximal degree in co-relation 21034. Up to 2642 conditions per place. [2024-06-28 03:03:51,244 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 127 selfloop transitions, 43 changer transitions 0/178 dead transitions. [2024-06-28 03:03:51,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 178 transitions, 1847 flow [2024-06-28 03:03:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:03:51,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 03:03:51,246 INFO L175 Difference]: Start difference. First operand has 122 places, 139 transitions, 1287 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:03:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 178 transitions, 1847 flow [2024-06-28 03:03:51,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 1689 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:51,303 INFO L231 Difference]: Finished difference. Result has 124 places, 145 transitions, 1339 flow [2024-06-28 03:03:51,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1339, PETRI_PLACES=124, PETRI_TRANSITIONS=145} [2024-06-28 03:03:51,303 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-06-28 03:03:51,304 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 145 transitions, 1339 flow [2024-06-28 03:03:51,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:51,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:51,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:51,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:03:51,304 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:51,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1377402898, now seen corresponding path program 4 times [2024-06-28 03:03:51,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:51,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674529530] [2024-06-28 03:03:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:51,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:52,359 INFO 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 03:03:52,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:52,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674529530] [2024-06-28 03:03:52,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674529530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:52,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:52,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:52,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594211128] [2024-06-28 03:03:52,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:52,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:52,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:52,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:52,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 145 transitions, 1339 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:52,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:52,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:52,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:53,161 INFO L124 PetriNetUnfolderBase]: 1980/3103 cut-off events. [2024-06-28 03:03:53,161 INFO L125 PetriNetUnfolderBase]: For 102293/102296 co-relation queries the response was YES. [2024-06-28 03:03:53,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21179 conditions, 3103 events. 1980/3103 cut-off events. For 102293/102296 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16282 event pairs, 501 based on Foata normal form. 6/3104 useless extension candidates. Maximal degree in co-relation 21127. Up to 2597 conditions per place. [2024-06-28 03:03:53,184 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 117 selfloop transitions, 59 changer transitions 0/184 dead transitions. [2024-06-28 03:03:53,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 184 transitions, 1887 flow [2024-06-28 03:03:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:03:53,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47073170731707314 [2024-06-28 03:03:53,186 INFO L175 Difference]: Start difference. First operand has 124 places, 145 transitions, 1339 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:03:53,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 184 transitions, 1887 flow [2024-06-28 03:03:53,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 184 transitions, 1795 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:53,248 INFO L231 Difference]: Finished difference. Result has 128 places, 147 transitions, 1444 flow [2024-06-28 03:03:53,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1444, PETRI_PLACES=128, PETRI_TRANSITIONS=147} [2024-06-28 03:03:53,249 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-28 03:03:53,249 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 147 transitions, 1444 flow [2024-06-28 03:03:53,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:53,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:53,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:53,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:03:53,249 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:53,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1141227538, now seen corresponding path program 5 times [2024-06-28 03:03:53,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:53,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598970052] [2024-06-28 03:03:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:54,362 INFO 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 03:03:54,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:54,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598970052] [2024-06-28 03:03:54,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598970052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:54,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:54,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784749283] [2024-06-28 03:03:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:54,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:54,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:54,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:54,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 147 transitions, 1444 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:54,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:54,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:54,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:55,069 INFO L124 PetriNetUnfolderBase]: 1944/3052 cut-off events. [2024-06-28 03:03:55,069 INFO L125 PetriNetUnfolderBase]: For 103744/103747 co-relation queries the response was YES. [2024-06-28 03:03:55,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20469 conditions, 3052 events. 1944/3052 cut-off events. For 103744/103747 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15966 event pairs, 483 based on Foata normal form. 22/3069 useless extension candidates. Maximal degree in co-relation 20416. Up to 2613 conditions per place. [2024-06-28 03:03:55,086 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 129 selfloop transitions, 42 changer transitions 0/179 dead transitions. [2024-06-28 03:03:55,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 179 transitions, 1906 flow [2024-06-28 03:03:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:55,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:03:55,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-28 03:03:55,088 INFO L175 Difference]: Start difference. First operand has 128 places, 147 transitions, 1444 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:03:55,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 179 transitions, 1906 flow [2024-06-28 03:03:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 179 transitions, 1769 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:55,162 INFO L231 Difference]: Finished difference. Result has 129 places, 147 transitions, 1401 flow [2024-06-28 03:03:55,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1401, PETRI_PLACES=129, PETRI_TRANSITIONS=147} [2024-06-28 03:03:55,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 87 predicate places. [2024-06-28 03:03:55,163 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 147 transitions, 1401 flow [2024-06-28 03:03:55,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:55,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:55,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:55,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:03:55,163 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:55,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash 731258806, now seen corresponding path program 2 times [2024-06-28 03:03:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:55,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582945084] [2024-06-28 03:03:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:55,839 INFO 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 03:03:55,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:55,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582945084] [2024-06-28 03:03:55,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582945084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:55,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:55,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:55,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919934373] [2024-06-28 03:03:55,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:55,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:55,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:55,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:03:55,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 147 transitions, 1401 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 03:03:55,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:55,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:03:55,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:56,473 INFO L124 PetriNetUnfolderBase]: 2042/3146 cut-off events. [2024-06-28 03:03:56,473 INFO L125 PetriNetUnfolderBase]: For 100803/100803 co-relation queries the response was YES. [2024-06-28 03:03:56,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20945 conditions, 3146 events. 2042/3146 cut-off events. For 100803/100803 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16020 event pairs, 531 based on Foata normal form. 2/3142 useless extension candidates. Maximal degree in co-relation 20891. Up to 3042 conditions per place. [2024-06-28 03:03:56,492 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 136 selfloop transitions, 18 changer transitions 0/158 dead transitions. [2024-06-28 03:03:56,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 158 transitions, 1757 flow [2024-06-28 03:03:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:56,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:03:56,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:03:56,493 INFO L175 Difference]: Start difference. First operand has 129 places, 147 transitions, 1401 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:03:56,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 158 transitions, 1757 flow [2024-06-28 03:03:56,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 158 transitions, 1617 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:56,555 INFO L231 Difference]: Finished difference. Result has 127 places, 147 transitions, 1303 flow [2024-06-28 03:03:56,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1303, PETRI_PLACES=127, PETRI_TRANSITIONS=147} [2024-06-28 03:03:56,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-28 03:03:56,555 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 147 transitions, 1303 flow [2024-06-28 03:03:56,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 03:03:56,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:56,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:56,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:03:56,556 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:56,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash 725550838, now seen corresponding path program 1 times [2024-06-28 03:03:56,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:56,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112888791] [2024-06-28 03:03:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:56,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:57,243 INFO 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 03:03:57,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:57,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112888791] [2024-06-28 03:03:57,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112888791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:57,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:57,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:57,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374844624] [2024-06-28 03:03:57,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:57,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:57,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:57,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:57,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:57,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 147 transitions, 1303 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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 03:03:57,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:57,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:57,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:57,714 INFO L124 PetriNetUnfolderBase]: 1843/2928 cut-off events. [2024-06-28 03:03:57,714 INFO L125 PetriNetUnfolderBase]: For 88003/88003 co-relation queries the response was YES. [2024-06-28 03:03:57,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18735 conditions, 2928 events. 1843/2928 cut-off events. For 88003/88003 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15365 event pairs, 444 based on Foata normal form. 1/2926 useless extension candidates. Maximal degree in co-relation 18680. Up to 2784 conditions per place. [2024-06-28 03:03:57,734 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 145 selfloop transitions, 16 changer transitions 0/166 dead transitions. [2024-06-28 03:03:57,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 166 transitions, 1778 flow [2024-06-28 03:03:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 03:03:57,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 03:03:57,736 INFO L175 Difference]: Start difference. First operand has 127 places, 147 transitions, 1303 flow. Second operand 6 states and 111 transitions. [2024-06-28 03:03:57,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 166 transitions, 1778 flow [2024-06-28 03:03:57,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 166 transitions, 1726 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:57,796 INFO L231 Difference]: Finished difference. Result has 128 places, 153 transitions, 1357 flow [2024-06-28 03:03:57,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1357, PETRI_PLACES=128, PETRI_TRANSITIONS=153} [2024-06-28 03:03:57,797 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-28 03:03:57,797 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 153 transitions, 1357 flow [2024-06-28 03:03:57,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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 03:03:57,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:57,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:57,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:03:57,798 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:57,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2019129688, now seen corresponding path program 2 times [2024-06-28 03:03:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:57,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088927357] [2024-06-28 03:03:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:58,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:58,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088927357] [2024-06-28 03:03:58,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088927357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:58,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:58,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:58,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861594874] [2024-06-28 03:03:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:58,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:58,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:58,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:58,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 153 transitions, 1357 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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 03:03:58,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:58,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:58,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:58,995 INFO L124 PetriNetUnfolderBase]: 1840/2924 cut-off events. [2024-06-28 03:03:58,995 INFO L125 PetriNetUnfolderBase]: For 88218/88218 co-relation queries the response was YES. [2024-06-28 03:03:59,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18927 conditions, 2924 events. 1840/2924 cut-off events. For 88218/88218 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15348 event pairs, 443 based on Foata normal form. 1/2922 useless extension candidates. Maximal degree in co-relation 18871. Up to 2793 conditions per place. [2024-06-28 03:03:59,014 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 146 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-06-28 03:03:59,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 162 transitions, 1696 flow [2024-06-28 03:03:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:03:59,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:03:59,016 INFO L175 Difference]: Start difference. First operand has 128 places, 153 transitions, 1357 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:03:59,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 162 transitions, 1696 flow [2024-06-28 03:03:59,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 162 transitions, 1642 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 03:03:59,077 INFO L231 Difference]: Finished difference. Result has 132 places, 153 transitions, 1331 flow [2024-06-28 03:03:59,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1331, PETRI_PLACES=132, PETRI_TRANSITIONS=153} [2024-06-28 03:03:59,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-28 03:03:59,078 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 153 transitions, 1331 flow [2024-06-28 03:03:59,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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 03:03:59,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:59,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:59,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:03:59,078 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:59,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash -971586864, now seen corresponding path program 1 times [2024-06-28 03:03:59,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:59,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860887483] [2024-06-28 03:03:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:00,310 INFO 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 03:04:00,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:00,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860887483] [2024-06-28 03:04:00,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860887483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:00,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:00,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233862902] [2024-06-28 03:04:00,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:00,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:00,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:00,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:00,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:00,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:00,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 153 transitions, 1331 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:00,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:00,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:00,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:01,185 INFO L124 PetriNetUnfolderBase]: 2009/3162 cut-off events. [2024-06-28 03:04:01,185 INFO L125 PetriNetUnfolderBase]: For 116443/116443 co-relation queries the response was YES. [2024-06-28 03:04:01,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21326 conditions, 3162 events. 2009/3162 cut-off events. For 116443/116443 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16728 event pairs, 495 based on Foata normal form. 16/3170 useless extension candidates. Maximal degree in co-relation 21268. Up to 2858 conditions per place. [2024-06-28 03:04:01,205 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 162 selfloop transitions, 22 changer transitions 0/194 dead transitions. [2024-06-28 03:04:01,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 194 transitions, 1884 flow [2024-06-28 03:04:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:01,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:04:01,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 03:04:01,209 INFO L175 Difference]: Start difference. First operand has 132 places, 153 transitions, 1331 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:04:01,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 194 transitions, 1884 flow [2024-06-28 03:04:01,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 194 transitions, 1850 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:01,273 INFO L231 Difference]: Finished difference. Result has 136 places, 154 transitions, 1394 flow [2024-06-28 03:04:01,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1394, PETRI_PLACES=136, PETRI_TRANSITIONS=154} [2024-06-28 03:04:01,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-28 03:04:01,273 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 154 transitions, 1394 flow [2024-06-28 03:04:01,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:01,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:01,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:01,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:04:01,274 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:01,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:01,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1686956260, now seen corresponding path program 2 times [2024-06-28 03:04:01,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:01,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865473160] [2024-06-28 03:04:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:01,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:02,328 INFO 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 03:04:02,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865473160] [2024-06-28 03:04:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865473160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:02,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:02,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:02,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387765034] [2024-06-28 03:04:02,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:02,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:02,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:02,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:02,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 154 transitions, 1394 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:02,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:02,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:02,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:03,315 INFO L124 PetriNetUnfolderBase]: 2184/3462 cut-off events. [2024-06-28 03:04:03,315 INFO L125 PetriNetUnfolderBase]: For 135297/135297 co-relation queries the response was YES. [2024-06-28 03:04:03,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24162 conditions, 3462 events. 2184/3462 cut-off events. For 135297/135297 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18864 event pairs, 529 based on Foata normal form. 12/3463 useless extension candidates. Maximal degree in co-relation 24104. Up to 2778 conditions per place. [2024-06-28 03:04:03,340 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 156 selfloop transitions, 41 changer transitions 0/207 dead transitions. [2024-06-28 03:04:03,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 207 transitions, 2207 flow [2024-06-28 03:04:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 03:04:03,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700665188470067 [2024-06-28 03:04:03,341 INFO L175 Difference]: Start difference. First operand has 136 places, 154 transitions, 1394 flow. Second operand 11 states and 212 transitions. [2024-06-28 03:04:03,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 207 transitions, 2207 flow [2024-06-28 03:04:03,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 207 transitions, 2146 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:03,422 INFO L231 Difference]: Finished difference. Result has 140 places, 157 transitions, 1555 flow [2024-06-28 03:04:03,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1555, PETRI_PLACES=140, PETRI_TRANSITIONS=157} [2024-06-28 03:04:03,422 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 98 predicate places. [2024-06-28 03:04:03,422 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 157 transitions, 1555 flow [2024-06-28 03:04:03,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:03,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:03,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:03,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:04:03,423 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:03,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:03,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1686963700, now seen corresponding path program 3 times [2024-06-28 03:04:03,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:03,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979219216] [2024-06-28 03:04:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:03,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:04,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:04,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979219216] [2024-06-28 03:04:04,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979219216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:04,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:04,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:04,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908327754] [2024-06-28 03:04:04,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:04,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:04,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:04,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:04,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:04,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:04,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 157 transitions, 1555 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:04,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:04,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:04,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:05,423 INFO L124 PetriNetUnfolderBase]: 2149/3409 cut-off events. [2024-06-28 03:04:05,423 INFO L125 PetriNetUnfolderBase]: For 135221/135221 co-relation queries the response was YES. [2024-06-28 03:04:05,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23559 conditions, 3409 events. 2149/3409 cut-off events. For 135221/135221 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18550 event pairs, 532 based on Foata normal form. 16/3422 useless extension candidates. Maximal degree in co-relation 23499. Up to 3030 conditions per place. [2024-06-28 03:04:05,446 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 150 selfloop transitions, 36 changer transitions 0/196 dead transitions. [2024-06-28 03:04:05,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 196 transitions, 2066 flow [2024-06-28 03:04:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:04:05,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 03:04:05,448 INFO L175 Difference]: Start difference. First operand has 140 places, 157 transitions, 1555 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:04:05,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 196 transitions, 2066 flow [2024-06-28 03:04:05,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 196 transitions, 1977 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:05,553 INFO L231 Difference]: Finished difference. Result has 143 places, 157 transitions, 1545 flow [2024-06-28 03:04:05,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1545, PETRI_PLACES=143, PETRI_TRANSITIONS=157} [2024-06-28 03:04:05,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-28 03:04:05,553 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 157 transitions, 1545 flow [2024-06-28 03:04:05,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:05,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:05,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:05,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:04:05,554 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:05,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash 839924770, now seen corresponding path program 1 times [2024-06-28 03:04:05,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:05,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935095995] [2024-06-28 03:04:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:05,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:06,207 INFO 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 03:04:06,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:06,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935095995] [2024-06-28 03:04:06,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935095995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:06,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:06,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55614933] [2024-06-28 03:04:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:06,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:06,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:06,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:04:06,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 157 transitions, 1545 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:06,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:06,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:04:06,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:07,017 INFO L124 PetriNetUnfolderBase]: 2252/3523 cut-off events. [2024-06-28 03:04:07,017 INFO L125 PetriNetUnfolderBase]: For 131439/131439 co-relation queries the response was YES. [2024-06-28 03:04:07,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24176 conditions, 3523 events. 2252/3523 cut-off events. For 131439/131439 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18841 event pairs, 576 based on Foata normal form. 2/3522 useless extension candidates. Maximal degree in co-relation 24114. Up to 3373 conditions per place. [2024-06-28 03:04:07,043 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 157 selfloop transitions, 25 changer transitions 0/186 dead transitions. [2024-06-28 03:04:07,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 186 transitions, 2148 flow [2024-06-28 03:04:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:04:07,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-28 03:04:07,045 INFO L175 Difference]: Start difference. First operand has 143 places, 157 transitions, 1545 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:04:07,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 186 transitions, 2148 flow [2024-06-28 03:04:07,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 186 transitions, 2073 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:07,142 INFO L231 Difference]: Finished difference. Result has 143 places, 166 transitions, 1634 flow [2024-06-28 03:04:07,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1634, PETRI_PLACES=143, PETRI_TRANSITIONS=166} [2024-06-28 03:04:07,143 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-28 03:04:07,143 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 166 transitions, 1634 flow [2024-06-28 03:04:07,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:07,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:07,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:07,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:04:07,143 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:07,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash -250181860, now seen corresponding path program 4 times [2024-06-28 03:04:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:07,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283422308] [2024-06-28 03:04:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:07,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:08,270 INFO 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 03:04:08,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:08,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283422308] [2024-06-28 03:04:08,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283422308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:08,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:08,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:08,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191627150] [2024-06-28 03:04:08,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:08,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:08,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:08,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:08,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:08,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 166 transitions, 1634 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:08,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:08,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:08,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:09,255 INFO L124 PetriNetUnfolderBase]: 2295/3666 cut-off events. [2024-06-28 03:04:09,256 INFO L125 PetriNetUnfolderBase]: For 157742/157753 co-relation queries the response was YES. [2024-06-28 03:04:09,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26311 conditions, 3666 events. 2295/3666 cut-off events. For 157742/157753 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20531 event pairs, 559 based on Foata normal form. 14/3670 useless extension candidates. Maximal degree in co-relation 26247. Up to 2988 conditions per place. [2024-06-28 03:04:09,283 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 132 selfloop transitions, 77 changer transitions 0/219 dead transitions. [2024-06-28 03:04:09,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 219 transitions, 2471 flow [2024-06-28 03:04:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:04:09,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745011086474501 [2024-06-28 03:04:09,285 INFO L175 Difference]: Start difference. First operand has 143 places, 166 transitions, 1634 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:04:09,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 219 transitions, 2471 flow [2024-06-28 03:04:09,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 219 transitions, 2436 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 03:04:09,401 INFO L231 Difference]: Finished difference. Result has 152 places, 171 transitions, 1872 flow [2024-06-28 03:04:09,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1872, PETRI_PLACES=152, PETRI_TRANSITIONS=171} [2024-06-28 03:04:09,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-28 03:04:09,401 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 171 transitions, 1872 flow [2024-06-28 03:04:09,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:09,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:09,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:09,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:04:09,402 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:09,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash -250189300, now seen corresponding path program 5 times [2024-06-28 03:04:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:09,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140876170] [2024-06-28 03:04:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:09,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:10,775 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 03:04:10,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:10,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140876170] [2024-06-28 03:04:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140876170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:10,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:10,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:10,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900644298] [2024-06-28 03:04:10,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:10,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:10,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:10,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 171 transitions, 1872 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:10,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:10,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:10,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:11,769 INFO L124 PetriNetUnfolderBase]: 2325/3720 cut-off events. [2024-06-28 03:04:11,770 INFO L125 PetriNetUnfolderBase]: For 173015/173026 co-relation queries the response was YES. [2024-06-28 03:04:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26793 conditions, 3720 events. 2325/3720 cut-off events. For 173015/173026 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 20995 event pairs, 568 based on Foata normal form. 34/3744 useless extension candidates. Maximal degree in co-relation 26726. Up to 3097 conditions per place. [2024-06-28 03:04:11,814 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 138 selfloop transitions, 69 changer transitions 0/217 dead transitions. [2024-06-28 03:04:11,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 217 transitions, 2492 flow [2024-06-28 03:04:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-28 03:04:11,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 03:04:11,816 INFO L175 Difference]: Start difference. First operand has 152 places, 171 transitions, 1872 flow. Second operand 12 states and 225 transitions. [2024-06-28 03:04:11,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 217 transitions, 2492 flow [2024-06-28 03:04:11,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 217 transitions, 2378 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:11,984 INFO L231 Difference]: Finished difference. Result has 158 places, 173 transitions, 1967 flow [2024-06-28 03:04:11,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1967, PETRI_PLACES=158, PETRI_TRANSITIONS=173} [2024-06-28 03:04:11,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-06-28 03:04:11,985 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 173 transitions, 1967 flow [2024-06-28 03:04:11,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:11,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:11,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:04:11,985 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:11,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1910437222, now seen corresponding path program 6 times [2024-06-28 03:04:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:11,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549317098] [2024-06-28 03:04:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:11,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:13,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549317098] [2024-06-28 03:04:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549317098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:13,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:13,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765985095] [2024-06-28 03:04:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:13,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:13,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 173 transitions, 1967 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:13,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:13,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:13,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:14,240 INFO L124 PetriNetUnfolderBase]: 2509/4046 cut-off events. [2024-06-28 03:04:14,241 INFO L125 PetriNetUnfolderBase]: For 181039/181050 co-relation queries the response was YES. [2024-06-28 03:04:14,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29505 conditions, 4046 events. 2509/4046 cut-off events. For 181039/181050 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23339 event pairs, 569 based on Foata normal form. 14/4050 useless extension candidates. Maximal degree in co-relation 29437. Up to 2461 conditions per place. [2024-06-28 03:04:14,273 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 128 selfloop transitions, 88 changer transitions 0/226 dead transitions. [2024-06-28 03:04:14,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 226 transitions, 2882 flow [2024-06-28 03:04:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:04:14,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745011086474501 [2024-06-28 03:04:14,275 INFO L175 Difference]: Start difference. First operand has 158 places, 173 transitions, 1967 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:04:14,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 226 transitions, 2882 flow [2024-06-28 03:04:14,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 226 transitions, 2733 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 03:04:14,434 INFO L231 Difference]: Finished difference. Result has 160 places, 177 transitions, 2202 flow [2024-06-28 03:04:14,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2202, PETRI_PLACES=160, PETRI_TRANSITIONS=177} [2024-06-28 03:04:14,435 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 03:04:14,435 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 177 transitions, 2202 flow [2024-06-28 03:04:14,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:14,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:14,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:14,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:04:14,436 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:14,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1644739942, now seen corresponding path program 7 times [2024-06-28 03:04:14,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:14,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746468004] [2024-06-28 03:04:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:14,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:15,640 INFO 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 03:04:15,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:15,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746468004] [2024-06-28 03:04:15,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746468004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:15,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:15,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:15,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519519368] [2024-06-28 03:04:15,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:15,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:15,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:15,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:15,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:15,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 177 transitions, 2202 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:15,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:15,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:15,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:16,677 INFO L124 PetriNetUnfolderBase]: 2550/4127 cut-off events. [2024-06-28 03:04:16,677 INFO L125 PetriNetUnfolderBase]: For 191261/191272 co-relation queries the response was YES. [2024-06-28 03:04:16,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30621 conditions, 4127 events. 2550/4127 cut-off events. For 191261/191272 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 24157 event pairs, 642 based on Foata normal form. 14/4131 useless extension candidates. Maximal degree in co-relation 30551. Up to 3463 conditions per place. [2024-06-28 03:04:16,710 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 159 selfloop transitions, 55 changer transitions 0/224 dead transitions. [2024-06-28 03:04:16,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 224 transitions, 2867 flow [2024-06-28 03:04:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-28 03:04:16,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678492239467849 [2024-06-28 03:04:16,712 INFO L175 Difference]: Start difference. First operand has 160 places, 177 transitions, 2202 flow. Second operand 11 states and 211 transitions. [2024-06-28 03:04:16,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 224 transitions, 2867 flow [2024-06-28 03:04:16,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 224 transitions, 2740 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:16,874 INFO L231 Difference]: Finished difference. Result has 164 places, 178 transitions, 2248 flow [2024-06-28 03:04:16,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2248, PETRI_PLACES=164, PETRI_TRANSITIONS=178} [2024-06-28 03:04:16,874 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-28 03:04:16,875 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 178 transitions, 2248 flow [2024-06-28 03:04:16,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:16,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:16,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:16,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:04:16,875 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:16,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1125228412, now seen corresponding path program 8 times [2024-06-28 03:04:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:16,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771512075] [2024-06-28 03:04:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:16,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:18,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:18,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771512075] [2024-06-28 03:04:18,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771512075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:18,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:18,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:18,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938520299] [2024-06-28 03:04:18,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:18,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:18,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:18,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:18,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:18,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 178 transitions, 2248 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:18,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:18,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:18,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:19,125 INFO L124 PetriNetUnfolderBase]: 2591/4203 cut-off events. [2024-06-28 03:04:19,126 INFO L125 PetriNetUnfolderBase]: For 201155/201166 co-relation queries the response was YES. [2024-06-28 03:04:19,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31420 conditions, 4203 events. 2591/4203 cut-off events. For 201155/201166 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24768 event pairs, 652 based on Foata normal form. 14/4207 useless extension candidates. Maximal degree in co-relation 31348. Up to 3498 conditions per place. [2024-06-28 03:04:19,157 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 163 selfloop transitions, 53 changer transitions 0/226 dead transitions. [2024-06-28 03:04:19,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 226 transitions, 3057 flow [2024-06-28 03:04:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:04:19,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745011086474501 [2024-06-28 03:04:19,159 INFO L175 Difference]: Start difference. First operand has 164 places, 178 transitions, 2248 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:04:19,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 226 transitions, 3057 flow [2024-06-28 03:04:19,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 226 transitions, 2896 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:19,317 INFO L231 Difference]: Finished difference. Result has 167 places, 179 transitions, 2256 flow [2024-06-28 03:04:19,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2256, PETRI_PLACES=167, PETRI_TRANSITIONS=179} [2024-06-28 03:04:19,318 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-06-28 03:04:19,318 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 179 transitions, 2256 flow [2024-06-28 03:04:19,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:19,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:19,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:19,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:04:19,318 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:19,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:19,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1125235852, now seen corresponding path program 9 times [2024-06-28 03:04:19,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:19,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448291258] [2024-06-28 03:04:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:19,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:20,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:20,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448291258] [2024-06-28 03:04:20,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448291258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:20,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:20,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227178023] [2024-06-28 03:04:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:20,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:20,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:20,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 179 transitions, 2256 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:20,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:20,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:20,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:21,428 INFO L124 PetriNetUnfolderBase]: 2563/4159 cut-off events. [2024-06-28 03:04:21,428 INFO L125 PetriNetUnfolderBase]: For 200085/200096 co-relation queries the response was YES. [2024-06-28 03:04:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30436 conditions, 4159 events. 2563/4159 cut-off events. For 200085/200096 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24500 event pairs, 656 based on Foata normal form. 18/4167 useless extension candidates. Maximal degree in co-relation 30363. Up to 3702 conditions per place. [2024-06-28 03:04:21,466 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 161 selfloop transitions, 43 changer transitions 0/214 dead transitions. [2024-06-28 03:04:21,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 214 transitions, 2792 flow [2024-06-28 03:04:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:04:21,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:04:21,467 INFO L175 Difference]: Start difference. First operand has 167 places, 179 transitions, 2256 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:04:21,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 214 transitions, 2792 flow [2024-06-28 03:04:21,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 214 transitions, 2523 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-28 03:04:21,657 INFO L231 Difference]: Finished difference. Result has 166 places, 179 transitions, 2080 flow [2024-06-28 03:04:21,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2080, PETRI_PLACES=166, PETRI_TRANSITIONS=179} [2024-06-28 03:04:21,658 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-28 03:04:21,658 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 179 transitions, 2080 flow [2024-06-28 03:04:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:21,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:21,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:21,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:04:21,658 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:21,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:21,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1194187810, now seen corresponding path program 2 times [2024-06-28 03:04:21,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:21,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700682327] [2024-06-28 03:04:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:22,306 INFO 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 03:04:22,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:22,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700682327] [2024-06-28 03:04:22,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700682327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:22,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:22,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:22,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269063196] [2024-06-28 03:04:22,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:22,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:22,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:22,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:04:22,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 179 transitions, 2080 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:22,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:22,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:04:22,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:23,168 INFO L124 PetriNetUnfolderBase]: 2668/4269 cut-off events. [2024-06-28 03:04:23,168 INFO L125 PetriNetUnfolderBase]: For 190388/190388 co-relation queries the response was YES. [2024-06-28 03:04:23,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30326 conditions, 4269 events. 2668/4269 cut-off events. For 190388/190388 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24733 event pairs, 695 based on Foata normal form. 2/4265 useless extension candidates. Maximal degree in co-relation 30254. Up to 4080 conditions per place. [2024-06-28 03:04:23,202 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 164 selfloop transitions, 28 changer transitions 0/196 dead transitions. [2024-06-28 03:04:23,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 196 transitions, 2654 flow [2024-06-28 03:04:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:04:23,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250871080139373 [2024-06-28 03:04:23,203 INFO L175 Difference]: Start difference. First operand has 166 places, 179 transitions, 2080 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:04:23,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 196 transitions, 2654 flow [2024-06-28 03:04:23,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 196 transitions, 2569 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:23,379 INFO L231 Difference]: Finished difference. Result has 165 places, 182 transitions, 2103 flow [2024-06-28 03:04:23,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2103, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2024-06-28 03:04:23,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-28 03:04:23,379 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 2103 flow [2024-06-28 03:04:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:23,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:23,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:04:23,380 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1194603520, now seen corresponding path program 3 times [2024-06-28 03:04:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:23,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155081786] [2024-06-28 03:04:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:23,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:24,032 INFO 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 03:04:24,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:24,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155081786] [2024-06-28 03:04:24,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155081786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:24,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:24,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:24,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450276673] [2024-06-28 03:04:24,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:24,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:24,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:24,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:24,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:24,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:04:24,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 2103 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:24,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:24,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:04:24,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:24,903 INFO L124 PetriNetUnfolderBase]: 2662/4261 cut-off events. [2024-06-28 03:04:24,903 INFO L125 PetriNetUnfolderBase]: For 195605/195605 co-relation queries the response was YES. [2024-06-28 03:04:24,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30286 conditions, 4261 events. 2662/4261 cut-off events. For 195605/195605 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24668 event pairs, 694 based on Foata normal form. 2/4257 useless extension candidates. Maximal degree in co-relation 30213. Up to 4075 conditions per place. [2024-06-28 03:04:24,937 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 162 selfloop transitions, 29 changer transitions 0/195 dead transitions. [2024-06-28 03:04:24,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 195 transitions, 2547 flow [2024-06-28 03:04:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:24,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:04:24,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181184668989547 [2024-06-28 03:04:24,938 INFO L175 Difference]: Start difference. First operand has 165 places, 182 transitions, 2103 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:04:24,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 195 transitions, 2547 flow [2024-06-28 03:04:25,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 195 transitions, 2448 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:25,129 INFO L231 Difference]: Finished difference. Result has 168 places, 182 transitions, 2068 flow [2024-06-28 03:04:25,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2068, PETRI_PLACES=168, PETRI_TRANSITIONS=182} [2024-06-28 03:04:25,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-28 03:04:25,130 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 182 transitions, 2068 flow [2024-06-28 03:04:25,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:25,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:25,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:04:25,130 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:25,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2031861144, now seen corresponding path program 1 times [2024-06-28 03:04:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:25,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047068187] [2024-06-28 03:04:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:25,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:25,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047068187] [2024-06-28 03:04:25,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047068187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:25,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:25,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:25,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343315186] [2024-06-28 03:04:25,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:25,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:25,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:25,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:25,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:25,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:25,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 182 transitions, 2068 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:04:25,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:25,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:25,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:26,579 INFO L124 PetriNetUnfolderBase]: 2525/4121 cut-off events. [2024-06-28 03:04:26,579 INFO L125 PetriNetUnfolderBase]: For 176747/176747 co-relation queries the response was YES. [2024-06-28 03:04:26,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28615 conditions, 4121 events. 2525/4121 cut-off events. For 176747/176747 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24444 event pairs, 612 based on Foata normal form. 1/4112 useless extension candidates. Maximal degree in co-relation 28541. Up to 3914 conditions per place. [2024-06-28 03:04:26,611 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 177 selfloop transitions, 16 changer transitions 0/202 dead transitions. [2024-06-28 03:04:26,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 202 transitions, 2548 flow [2024-06-28 03:04:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:04:26,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:04:26,612 INFO L175 Difference]: Start difference. First operand has 168 places, 182 transitions, 2068 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:04:26,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 202 transitions, 2548 flow [2024-06-28 03:04:26,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 202 transitions, 2494 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:26,815 INFO L231 Difference]: Finished difference. Result has 172 places, 187 transitions, 2119 flow [2024-06-28 03:04:26,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2119, PETRI_PLACES=172, PETRI_TRANSITIONS=187} [2024-06-28 03:04:26,815 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2024-06-28 03:04:26,815 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 187 transitions, 2119 flow [2024-06-28 03:04:26,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:04:26,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:26,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:26,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:04:26,816 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:26,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1400207810, now seen corresponding path program 1 times [2024-06-28 03:04:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:26,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68113462] [2024-06-28 03:04:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:26,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:27,485 INFO 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 03:04:27,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68113462] [2024-06-28 03:04:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68113462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:27,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:27,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:27,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592978203] [2024-06-28 03:04:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:27,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:27,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:27,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 187 transitions, 2119 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:04:27,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:27,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:27,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:28,151 INFO L124 PetriNetUnfolderBase]: 2557/4167 cut-off events. [2024-06-28 03:04:28,151 INFO L125 PetriNetUnfolderBase]: For 186092/186092 co-relation queries the response was YES. [2024-06-28 03:04:28,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29324 conditions, 4167 events. 2557/4167 cut-off events. For 186092/186092 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24729 event pairs, 613 based on Foata normal form. 2/4159 useless extension candidates. Maximal degree in co-relation 29248. Up to 3937 conditions per place. [2024-06-28 03:04:28,186 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 176 selfloop transitions, 26 changer transitions 0/211 dead transitions. [2024-06-28 03:04:28,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 211 transitions, 2723 flow [2024-06-28 03:04:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:04:28,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44947735191637633 [2024-06-28 03:04:28,190 INFO L175 Difference]: Start difference. First operand has 172 places, 187 transitions, 2119 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:04:28,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 211 transitions, 2723 flow [2024-06-28 03:04:28,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 211 transitions, 2661 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:28,401 INFO L231 Difference]: Finished difference. Result has 175 places, 196 transitions, 2216 flow [2024-06-28 03:04:28,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2216, PETRI_PLACES=175, PETRI_TRANSITIONS=196} [2024-06-28 03:04:28,402 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-06-28 03:04:28,402 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 196 transitions, 2216 flow [2024-06-28 03:04:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:04:28,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:28,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:28,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:04:28,403 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:28,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:28,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1017240616, now seen corresponding path program 2 times [2024-06-28 03:04:28,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:28,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047396697] [2024-06-28 03:04:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:28,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:29,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047396697] [2024-06-28 03:04:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047396697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:29,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:29,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748762008] [2024-06-28 03:04:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:29,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:29,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:29,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 196 transitions, 2216 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:04:29,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:29,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:29,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:29,817 INFO L124 PetriNetUnfolderBase]: 2562/4174 cut-off events. [2024-06-28 03:04:29,817 INFO L125 PetriNetUnfolderBase]: For 192806/192806 co-relation queries the response was YES. [2024-06-28 03:04:29,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29966 conditions, 4174 events. 2562/4174 cut-off events. For 192806/192806 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24747 event pairs, 612 based on Foata normal form. 1/4165 useless extension candidates. Maximal degree in co-relation 29888. Up to 3949 conditions per place. [2024-06-28 03:04:29,852 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 179 selfloop transitions, 27 changer transitions 0/215 dead transitions. [2024-06-28 03:04:29,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 215 transitions, 2848 flow [2024-06-28 03:04:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:04:29,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-28 03:04:29,853 INFO L175 Difference]: Start difference. First operand has 175 places, 196 transitions, 2216 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:04:29,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 215 transitions, 2848 flow [2024-06-28 03:04:30,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 215 transitions, 2806 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 03:04:30,049 INFO L231 Difference]: Finished difference. Result has 180 places, 202 transitions, 2340 flow [2024-06-28 03:04:30,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2340, PETRI_PLACES=180, PETRI_TRANSITIONS=202} [2024-06-28 03:04:30,049 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-28 03:04:30,049 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 202 transitions, 2340 flow [2024-06-28 03:04:30,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:04:30,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:30,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:30,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:04:30,050 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:30,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1831250658, now seen corresponding path program 2 times [2024-06-28 03:04:30,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:30,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624577509] [2024-06-28 03:04:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:30,724 INFO 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 03:04:30,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:30,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624577509] [2024-06-28 03:04:30,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624577509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:30,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:30,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249991452] [2024-06-28 03:04:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:30,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:30,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:30,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:30,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 202 transitions, 2340 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:04:30,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:30,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:30,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:31,472 INFO L124 PetriNetUnfolderBase]: 2563/4176 cut-off events. [2024-06-28 03:04:31,472 INFO L125 PetriNetUnfolderBase]: For 201647/201647 co-relation queries the response was YES. [2024-06-28 03:04:31,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30278 conditions, 4176 events. 2563/4176 cut-off events. For 201647/201647 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24762 event pairs, 611 based on Foata normal form. 3/4169 useless extension candidates. Maximal degree in co-relation 30197. Up to 3971 conditions per place. [2024-06-28 03:04:31,507 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 189 selfloop transitions, 17 changer transitions 0/215 dead transitions. [2024-06-28 03:04:31,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 215 transitions, 2810 flow [2024-06-28 03:04:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:04:31,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181184668989547 [2024-06-28 03:04:31,508 INFO L175 Difference]: Start difference. First operand has 180 places, 202 transitions, 2340 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:04:31,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 215 transitions, 2810 flow [2024-06-28 03:04:31,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 215 transitions, 2747 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:31,692 INFO L231 Difference]: Finished difference. Result has 184 places, 205 transitions, 2356 flow [2024-06-28 03:04:31,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2356, PETRI_PLACES=184, PETRI_TRANSITIONS=205} [2024-06-28 03:04:31,693 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 142 predicate places. [2024-06-28 03:04:31,693 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 205 transitions, 2356 flow [2024-06-28 03:04:31,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:04:31,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:31,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:31,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:04:31,694 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:31,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1194372136, now seen corresponding path program 3 times [2024-06-28 03:04:31,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:31,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132745368] [2024-06-28 03:04:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:31,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:32,329 INFO 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 03:04:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:32,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132745368] [2024-06-28 03:04:32,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132745368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:32,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:32,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:32,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416586057] [2024-06-28 03:04:32,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:32,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:32,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:32,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:32,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:32,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 205 transitions, 2356 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:04:32,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:32,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:32,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:33,014 INFO L124 PetriNetUnfolderBase]: 2560/4172 cut-off events. [2024-06-28 03:04:33,014 INFO L125 PetriNetUnfolderBase]: For 205244/205244 co-relation queries the response was YES. [2024-06-28 03:04:33,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30376 conditions, 4172 events. 2560/4172 cut-off events. For 205244/205244 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24732 event pairs, 611 based on Foata normal form. 1/4163 useless extension candidates. Maximal degree in co-relation 30293. Up to 3973 conditions per place. [2024-06-28 03:04:33,054 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 190 selfloop transitions, 15 changer transitions 0/214 dead transitions. [2024-06-28 03:04:33,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 214 transitions, 2788 flow [2024-06-28 03:04:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:04:33,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:04:33,055 INFO L175 Difference]: Start difference. First operand has 184 places, 205 transitions, 2356 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:04:33,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 214 transitions, 2788 flow [2024-06-28 03:04:33,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 214 transitions, 2702 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:33,295 INFO L231 Difference]: Finished difference. Result has 186 places, 205 transitions, 2306 flow [2024-06-28 03:04:33,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2306, PETRI_PLACES=186, PETRI_TRANSITIONS=205} [2024-06-28 03:04:33,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-28 03:04:33,295 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 205 transitions, 2306 flow [2024-06-28 03:04:33,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:04:33,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:33,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:33,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:04:33,296 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:33,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1194372322, now seen corresponding path program 3 times [2024-06-28 03:04:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:33,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258134457] [2024-06-28 03:04:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:33,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:33,933 INFO 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 03:04:33,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:33,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258134457] [2024-06-28 03:04:33,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258134457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:33,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:33,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:33,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899552099] [2024-06-28 03:04:33,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:33,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:33,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:34,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:34,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 205 transitions, 2306 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:04:34,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:34,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:34,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:34,640 INFO L124 PetriNetUnfolderBase]: 2554/4164 cut-off events. [2024-06-28 03:04:34,640 INFO L125 PetriNetUnfolderBase]: For 210331/210331 co-relation queries the response was YES. [2024-06-28 03:04:34,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30298 conditions, 4164 events. 2554/4164 cut-off events. For 210331/210331 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24744 event pairs, 610 based on Foata normal form. 2/4156 useless extension candidates. Maximal degree in co-relation 30215. Up to 3950 conditions per place. [2024-06-28 03:04:34,676 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 185 selfloop transitions, 22 changer transitions 0/216 dead transitions. [2024-06-28 03:04:34,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 216 transitions, 2750 flow [2024-06-28 03:04:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:04:34,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:04:34,677 INFO L175 Difference]: Start difference. First operand has 186 places, 205 transitions, 2306 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:04:34,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 216 transitions, 2750 flow [2024-06-28 03:04:34,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 216 transitions, 2688 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:34,939 INFO L231 Difference]: Finished difference. Result has 187 places, 205 transitions, 2294 flow [2024-06-28 03:04:34,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2294, PETRI_PLACES=187, PETRI_TRANSITIONS=205} [2024-06-28 03:04:34,939 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2024-06-28 03:04:34,939 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 205 transitions, 2294 flow [2024-06-28 03:04:34,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:04:34,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:34,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:34,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:04:34,940 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:34,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -542176755, now seen corresponding path program 1 times [2024-06-28 03:04:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:34,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330922600] [2024-06-28 03:04:34,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:34,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:36,218 INFO 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 03:04:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330922600] [2024-06-28 03:04:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330922600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:36,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:36,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:36,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188134775] [2024-06-28 03:04:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:36,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:36,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:36,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 205 transitions, 2294 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:36,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:36,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:36,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:37,194 INFO L124 PetriNetUnfolderBase]: 2665/4307 cut-off events. [2024-06-28 03:04:37,195 INFO L125 PetriNetUnfolderBase]: For 263180/263180 co-relation queries the response was YES. [2024-06-28 03:04:37,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32650 conditions, 4307 events. 2665/4307 cut-off events. For 263180/263180 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 25261 event pairs, 467 based on Foata normal form. 12/4306 useless extension candidates. Maximal degree in co-relation 32566. Up to 3929 conditions per place. [2024-06-28 03:04:37,231 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 216 selfloop transitions, 20 changer transitions 0/249 dead transitions. [2024-06-28 03:04:37,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 249 transitions, 2950 flow [2024-06-28 03:04:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 03:04:37,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-28 03:04:37,233 INFO L175 Difference]: Start difference. First operand has 187 places, 205 transitions, 2294 flow. Second operand 10 states and 187 transitions. [2024-06-28 03:04:37,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 249 transitions, 2950 flow [2024-06-28 03:04:37,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 249 transitions, 2883 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:37,535 INFO L231 Difference]: Finished difference. Result has 192 places, 208 transitions, 2346 flow [2024-06-28 03:04:37,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2227, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2346, PETRI_PLACES=192, PETRI_TRANSITIONS=208} [2024-06-28 03:04:37,536 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 150 predicate places. [2024-06-28 03:04:37,536 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 208 transitions, 2346 flow [2024-06-28 03:04:37,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:37,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:37,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:37,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:04:37,536 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:37,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash -54604745, now seen corresponding path program 2 times [2024-06-28 03:04:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944401524] [2024-06-28 03:04:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:38,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:38,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944401524] [2024-06-28 03:04:38,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944401524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:38,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:38,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:38,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817083131] [2024-06-28 03:04:38,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:38,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:38,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:38,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:38,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 208 transitions, 2346 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:38,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:38,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:38,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:39,847 INFO L124 PetriNetUnfolderBase]: 2718/4400 cut-off events. [2024-06-28 03:04:39,847 INFO L125 PetriNetUnfolderBase]: For 272765/272765 co-relation queries the response was YES. [2024-06-28 03:04:39,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33484 conditions, 4400 events. 2718/4400 cut-off events. For 272765/272765 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 26103 event pairs, 629 based on Foata normal form. 12/4405 useless extension candidates. Maximal degree in co-relation 33398. Up to 4058 conditions per place. [2024-06-28 03:04:39,882 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 215 selfloop transitions, 22 changer transitions 0/250 dead transitions. [2024-06-28 03:04:39,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 250 transitions, 2994 flow [2024-06-28 03:04:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:39,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 03:04:39,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-28 03:04:39,884 INFO L175 Difference]: Start difference. First operand has 192 places, 208 transitions, 2346 flow. Second operand 10 states and 187 transitions. [2024-06-28 03:04:39,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 250 transitions, 2994 flow [2024-06-28 03:04:40,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 250 transitions, 2914 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:40,170 INFO L231 Difference]: Finished difference. Result has 196 places, 211 transitions, 2385 flow [2024-06-28 03:04:40,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2385, PETRI_PLACES=196, PETRI_TRANSITIONS=211} [2024-06-28 03:04:40,170 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-28 03:04:40,170 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 211 transitions, 2385 flow [2024-06-28 03:04:40,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:40,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:40,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:40,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:04:40,171 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:40,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:40,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1931177803, now seen corresponding path program 3 times [2024-06-28 03:04:40,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:40,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909083881] [2024-06-28 03:04:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:40,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:41,557 INFO 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 03:04:41,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909083881] [2024-06-28 03:04:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909083881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:41,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:41,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:41,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308607524] [2024-06-28 03:04:41,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:41,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:41,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:41,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:41,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:41,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:41,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 211 transitions, 2385 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:41,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:41,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:41,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:42,674 INFO L124 PetriNetUnfolderBase]: 2864/4632 cut-off events. [2024-06-28 03:04:42,674 INFO L125 PetriNetUnfolderBase]: For 286278/286278 co-relation queries the response was YES. [2024-06-28 03:04:42,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34859 conditions, 4632 events. 2864/4632 cut-off events. For 286278/286278 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 27656 event pairs, 637 based on Foata normal form. 12/4623 useless extension candidates. Maximal degree in co-relation 34771. Up to 4233 conditions per place. [2024-06-28 03:04:42,718 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 224 selfloop transitions, 32 changer transitions 0/269 dead transitions. [2024-06-28 03:04:42,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 269 transitions, 3239 flow [2024-06-28 03:04:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 03:04:42,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434589800443459 [2024-06-28 03:04:42,719 INFO L175 Difference]: Start difference. First operand has 196 places, 211 transitions, 2385 flow. Second operand 11 states and 200 transitions. [2024-06-28 03:04:42,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 269 transitions, 3239 flow [2024-06-28 03:04:43,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 269 transitions, 3138 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:43,158 INFO L231 Difference]: Finished difference. Result has 205 places, 231 transitions, 2633 flow [2024-06-28 03:04:43,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2633, PETRI_PLACES=205, PETRI_TRANSITIONS=231} [2024-06-28 03:04:43,159 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-28 03:04:43,159 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 231 transitions, 2633 flow [2024-06-28 03:04:43,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:43,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:43,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:43,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:04:43,159 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:43,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1056842477, now seen corresponding path program 4 times [2024-06-28 03:04:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430970024] [2024-06-28 03:04:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:43,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:44,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:44,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430970024] [2024-06-28 03:04:44,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430970024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:44,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:44,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:44,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812790511] [2024-06-28 03:04:44,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:44,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:44,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:44,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:44,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 231 transitions, 2633 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:44,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:44,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:44,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:45,754 INFO L124 PetriNetUnfolderBase]: 2897/4695 cut-off events. [2024-06-28 03:04:45,754 INFO L125 PetriNetUnfolderBase]: For 297460/297460 co-relation queries the response was YES. [2024-06-28 03:04:45,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35528 conditions, 4695 events. 2897/4695 cut-off events. For 297460/297460 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 28115 event pairs, 649 based on Foata normal form. 12/4700 useless extension candidates. Maximal degree in co-relation 35434. Up to 4228 conditions per place. [2024-06-28 03:04:45,799 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 217 selfloop transitions, 43 changer transitions 0/273 dead transitions. [2024-06-28 03:04:45,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 273 transitions, 3347 flow [2024-06-28 03:04:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:04:45,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 03:04:45,800 INFO L175 Difference]: Start difference. First operand has 205 places, 231 transitions, 2633 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:04:45,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 273 transitions, 3347 flow [2024-06-28 03:04:46,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 273 transitions, 3289 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-28 03:04:46,161 INFO L231 Difference]: Finished difference. Result has 215 places, 235 transitions, 2759 flow [2024-06-28 03:04:46,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2759, PETRI_PLACES=215, PETRI_TRANSITIONS=235} [2024-06-28 03:04:46,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-28 03:04:46,162 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 235 transitions, 2759 flow [2024-06-28 03:04:46,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:46,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:46,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:46,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:04:46,162 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:46,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:46,163 INFO L85 PathProgramCache]: Analyzing trace with hash 265600739, now seen corresponding path program 1 times [2024-06-28 03:04:46,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:46,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75578637] [2024-06-28 03:04:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:46,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:46,959 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 03:04:46,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:46,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75578637] [2024-06-28 03:04:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75578637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:46,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:46,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410471321] [2024-06-28 03:04:46,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:46,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:46,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:46,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:47,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:04:47,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 235 transitions, 2759 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:47,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:47,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:04:47,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:47,773 INFO L124 PetriNetUnfolderBase]: 3029/4856 cut-off events. [2024-06-28 03:04:47,774 INFO L125 PetriNetUnfolderBase]: For 298456/298459 co-relation queries the response was YES. [2024-06-28 03:04:47,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36748 conditions, 4856 events. 3029/4856 cut-off events. For 298456/298459 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 28713 event pairs, 703 based on Foata normal form. 4/4855 useless extension candidates. Maximal degree in co-relation 36650. Up to 4664 conditions per place. [2024-06-28 03:04:47,818 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 237 selfloop transitions, 32 changer transitions 0/273 dead transitions. [2024-06-28 03:04:47,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 273 transitions, 3700 flow [2024-06-28 03:04:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:04:47,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-28 03:04:47,819 INFO L175 Difference]: Start difference. First operand has 215 places, 235 transitions, 2759 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:04:47,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 273 transitions, 3700 flow [2024-06-28 03:04:48,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 273 transitions, 3554 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:48,136 INFO L231 Difference]: Finished difference. Result has 219 places, 253 transitions, 2968 flow [2024-06-28 03:04:48,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2621, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2968, PETRI_PLACES=219, PETRI_TRANSITIONS=253} [2024-06-28 03:04:48,136 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-28 03:04:48,137 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 253 transitions, 2968 flow [2024-06-28 03:04:48,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:48,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:48,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:48,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:04:48,137 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:48,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash 271314659, now seen corresponding path program 2 times [2024-06-28 03:04:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573085286] [2024-06-28 03:04:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:48,894 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 03:04:48,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:48,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573085286] [2024-06-28 03:04:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573085286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:48,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:48,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841845228] [2024-06-28 03:04:48,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:48,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:48,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:48,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:04:48,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 253 transitions, 2968 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:04:48,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:48,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:04:48,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:49,891 INFO L124 PetriNetUnfolderBase]: 3039/4879 cut-off events. [2024-06-28 03:04:49,891 INFO L125 PetriNetUnfolderBase]: For 308873/308876 co-relation queries the response was YES. [2024-06-28 03:04:49,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37447 conditions, 4879 events. 3039/4879 cut-off events. For 308873/308876 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 28961 event pairs, 708 based on Foata normal form. 4/4878 useless extension candidates. Maximal degree in co-relation 37345. Up to 4709 conditions per place. [2024-06-28 03:04:49,932 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 240 selfloop transitions, 27 changer transitions 0/271 dead transitions. [2024-06-28 03:04:49,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 271 transitions, 3632 flow [2024-06-28 03:04:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:04:49,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 03:04:49,934 INFO L175 Difference]: Start difference. First operand has 219 places, 253 transitions, 2968 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:04:49,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 271 transitions, 3632 flow [2024-06-28 03:04:50,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 271 transitions, 3504 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:50,300 INFO L231 Difference]: Finished difference. Result has 224 places, 257 transitions, 2986 flow [2024-06-28 03:04:50,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2872, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2986, PETRI_PLACES=224, PETRI_TRANSITIONS=257} [2024-06-28 03:04:50,300 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2024-06-28 03:04:50,300 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 257 transitions, 2986 flow [2024-06-28 03:04:50,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:04:50,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:50,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:50,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:04:50,301 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:50,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:50,302 INFO L85 PathProgramCache]: Analyzing trace with hash 271322595, now seen corresponding path program 1 times [2024-06-28 03:04:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:50,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535243133] [2024-06-28 03:04:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:51,107 INFO 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 03:04:51,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:51,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535243133] [2024-06-28 03:04:51,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535243133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:51,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:51,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214562085] [2024-06-28 03:04:51,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:51,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:04:51,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 257 transitions, 2986 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:04:51,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:51,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:04:51,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:52,273 INFO L124 PetriNetUnfolderBase]: 3059/4906 cut-off events. [2024-06-28 03:04:52,273 INFO L125 PetriNetUnfolderBase]: For 320701/320701 co-relation queries the response was YES. [2024-06-28 03:04:52,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37702 conditions, 4906 events. 3059/4906 cut-off events. For 320701/320701 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 29089 event pairs, 707 based on Foata normal form. 4/4907 useless extension candidates. Maximal degree in co-relation 37599. Up to 4624 conditions per place. [2024-06-28 03:04:52,321 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 232 selfloop transitions, 48 changer transitions 0/284 dead transitions. [2024-06-28 03:04:52,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 284 transitions, 3850 flow [2024-06-28 03:04:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:04:52,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:04:52,323 INFO L175 Difference]: Start difference. First operand has 224 places, 257 transitions, 2986 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:04:52,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 284 transitions, 3850 flow [2024-06-28 03:04:52,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 284 transitions, 3768 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:52,716 INFO L231 Difference]: Finished difference. Result has 227 places, 263 transitions, 3112 flow [2024-06-28 03:04:52,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3112, PETRI_PLACES=227, PETRI_TRANSITIONS=263} [2024-06-28 03:04:52,717 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-28 03:04:52,717 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 263 transitions, 3112 flow [2024-06-28 03:04:52,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:04:52,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:52,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:52,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:04:52,718 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:52,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1325555127, now seen corresponding path program 5 times [2024-06-28 03:04:52,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:52,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120362982] [2024-06-28 03:04:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:52,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:54,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:54,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120362982] [2024-06-28 03:04:54,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120362982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:54,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:54,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:54,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430111858] [2024-06-28 03:04:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:54,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:54,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:54,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:54,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:54,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:54,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 263 transitions, 3112 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:54,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:54,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:54,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:55,252 INFO L124 PetriNetUnfolderBase]: 3021/4908 cut-off events. [2024-06-28 03:04:55,252 INFO L125 PetriNetUnfolderBase]: For 345549/345555 co-relation queries the response was YES. [2024-06-28 03:04:55,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38451 conditions, 4908 events. 3021/4908 cut-off events. For 345549/345555 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29655 event pairs, 663 based on Foata normal form. 16/4917 useless extension candidates. Maximal degree in co-relation 38347. Up to 4348 conditions per place. [2024-06-28 03:04:55,299 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 233 selfloop transitions, 51 changer transitions 0/303 dead transitions. [2024-06-28 03:04:55,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 303 transitions, 3876 flow [2024-06-28 03:04:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:04:55,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 03:04:55,301 INFO L175 Difference]: Start difference. First operand has 227 places, 263 transitions, 3112 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:04:55,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 303 transitions, 3876 flow [2024-06-28 03:04:55,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 303 transitions, 3804 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:55,710 INFO L231 Difference]: Finished difference. Result has 234 places, 267 transitions, 3251 flow [2024-06-28 03:04:55,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3040, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3251, PETRI_PLACES=234, PETRI_TRANSITIONS=267} [2024-06-28 03:04:55,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-28 03:04:55,710 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 267 transitions, 3251 flow [2024-06-28 03:04:55,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:04:55,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:55,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:55,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:04:55,711 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:55,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash -457167653, now seen corresponding path program 3 times [2024-06-28 03:04:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:55,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123449468] [2024-06-28 03:04:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:55,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:56,454 INFO 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 03:04:56,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123449468] [2024-06-28 03:04:56,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123449468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:56,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:56,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:56,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495560094] [2024-06-28 03:04:56,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:56,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:56,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:56,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:56,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:56,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:04:56,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 267 transitions, 3251 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:56,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:56,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:04:56,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:57,346 INFO L124 PetriNetUnfolderBase]: 3134/5026 cut-off events. [2024-06-28 03:04:57,346 INFO L125 PetriNetUnfolderBase]: For 352356/352362 co-relation queries the response was YES. [2024-06-28 03:04:57,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39926 conditions, 5026 events. 3134/5026 cut-off events. For 352356/352362 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 29942 event pairs, 719 based on Foata normal form. 6/5025 useless extension candidates. Maximal degree in co-relation 39819. Up to 4737 conditions per place. [2024-06-28 03:04:57,396 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 241 selfloop transitions, 53 changer transitions 0/298 dead transitions. [2024-06-28 03:04:57,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 298 transitions, 4363 flow [2024-06-28 03:04:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:04:57,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44947735191637633 [2024-06-28 03:04:57,397 INFO L175 Difference]: Start difference. First operand has 234 places, 267 transitions, 3251 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:04:57,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 298 transitions, 4363 flow [2024-06-28 03:04:57,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 298 transitions, 4199 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:57,825 INFO L231 Difference]: Finished difference. Result has 234 places, 276 transitions, 3406 flow [2024-06-28 03:04:57,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3089, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3406, PETRI_PLACES=234, PETRI_TRANSITIONS=276} [2024-06-28 03:04:57,826 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-28 03:04:57,826 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 276 transitions, 3406 flow [2024-06-28 03:04:57,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:57,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:57,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:57,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:04:57,826 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:57,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1469681237, now seen corresponding path program 4 times [2024-06-28 03:04:57,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:57,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409342618] [2024-06-28 03:04:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:57,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409342618] [2024-06-28 03:04:58,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409342618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:58,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:58,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193182390] [2024-06-28 03:04:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:58,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:58,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:58,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:04:58,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 276 transitions, 3406 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:04:58,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:58,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:04:58,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:59,499 INFO L124 PetriNetUnfolderBase]: 3160/5064 cut-off events. [2024-06-28 03:04:59,500 INFO L125 PetriNetUnfolderBase]: For 367048/367054 co-relation queries the response was YES. [2024-06-28 03:04:59,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40620 conditions, 5064 events. 3160/5064 cut-off events. For 367048/367054 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 30185 event pairs, 726 based on Foata normal form. 6/5063 useless extension candidates. Maximal degree in co-relation 40512. Up to 4762 conditions per place. [2024-06-28 03:04:59,554 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 235 selfloop transitions, 62 changer transitions 0/301 dead transitions. [2024-06-28 03:04:59,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 301 transitions, 4464 flow [2024-06-28 03:04:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:04:59,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:04:59,555 INFO L175 Difference]: Start difference. First operand has 234 places, 276 transitions, 3406 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:04:59,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 301 transitions, 4464 flow [2024-06-28 03:05:00,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 301 transitions, 4280 flow, removed 82 selfloop flow, removed 2 redundant places. [2024-06-28 03:05:00,090 INFO L231 Difference]: Finished difference. Result has 239 places, 282 transitions, 3496 flow [2024-06-28 03:05:00,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3496, PETRI_PLACES=239, PETRI_TRANSITIONS=282} [2024-06-28 03:05:00,091 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-28 03:05:00,091 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 282 transitions, 3496 flow [2024-06-28 03:05:00,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:05:00,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:00,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:00,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:05:00,091 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:00,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:00,092 INFO L85 PathProgramCache]: Analyzing trace with hash -941559753, now seen corresponding path program 5 times [2024-06-28 03:05:00,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:00,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126188221] [2024-06-28 03:05:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:00,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:00,743 INFO 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 03:05:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:00,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126188221] [2024-06-28 03:05:00,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126188221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:00,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:00,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:05:00,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4884191] [2024-06-28 03:05:00,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:05:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:05:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:05:00,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:00,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 282 transitions, 3496 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:05:00,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:00,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:00,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:01,702 INFO L124 PetriNetUnfolderBase]: 3154/5065 cut-off events. [2024-06-28 03:05:01,702 INFO L125 PetriNetUnfolderBase]: For 371282/371288 co-relation queries the response was YES. [2024-06-28 03:05:01,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40456 conditions, 5065 events. 3154/5065 cut-off events. For 371282/371288 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 30272 event pairs, 725 based on Foata normal form. 6/5064 useless extension candidates. Maximal degree in co-relation 40346. Up to 4856 conditions per place. [2024-06-28 03:05:01,755 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 253 selfloop transitions, 37 changer transitions 0/294 dead transitions. [2024-06-28 03:05:01,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 294 transitions, 4248 flow [2024-06-28 03:05:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:05:01,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:05:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:05:01,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:05:01,756 INFO L175 Difference]: Start difference. First operand has 239 places, 282 transitions, 3496 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:05:01,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 294 transitions, 4248 flow [2024-06-28 03:05:02,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 294 transitions, 4144 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 03:05:02,272 INFO L231 Difference]: Finished difference. Result has 243 places, 282 transitions, 3472 flow [2024-06-28 03:05:02,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3392, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3472, PETRI_PLACES=243, PETRI_TRANSITIONS=282} [2024-06-28 03:05:02,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 201 predicate places. [2024-06-28 03:05:02,273 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 282 transitions, 3472 flow [2024-06-28 03:05:02,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 03:05:02,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:02,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:02,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:05:02,274 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:02,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:02,275 INFO L85 PathProgramCache]: Analyzing trace with hash 586801349, now seen corresponding path program 6 times [2024-06-28 03:05:02,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:02,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572137956] [2024-06-28 03:05:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:02,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:02,990 INFO 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 03:05:02,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:02,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572137956] [2024-06-28 03:05:02,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572137956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:02,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:02,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:02,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538048831] [2024-06-28 03:05:02,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:02,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:02,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:02,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:03,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:03,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 282 transitions, 3472 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:05:03,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:03,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:03,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:03,987 INFO L124 PetriNetUnfolderBase]: 3148/5055 cut-off events. [2024-06-28 03:05:03,987 INFO L125 PetriNetUnfolderBase]: For 378299/378305 co-relation queries the response was YES. [2024-06-28 03:05:04,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40341 conditions, 5055 events. 3148/5055 cut-off events. For 378299/378305 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 30176 event pairs, 724 based on Foata normal form. 6/5054 useless extension candidates. Maximal degree in co-relation 40230. Up to 4875 conditions per place. [2024-06-28 03:05:04,040 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 260 selfloop transitions, 28 changer transitions 0/292 dead transitions. [2024-06-28 03:05:04,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 292 transitions, 4086 flow [2024-06-28 03:05:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:04,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:05:04,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-28 03:05:04,041 INFO L175 Difference]: Start difference. First operand has 243 places, 282 transitions, 3472 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:05:04,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 292 transitions, 4086 flow [2024-06-28 03:05:04,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 292 transitions, 3969 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:05:04,546 INFO L231 Difference]: Finished difference. Result has 246 places, 282 transitions, 3417 flow [2024-06-28 03:05:04,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3417, PETRI_PLACES=246, PETRI_TRANSITIONS=282} [2024-06-28 03:05:04,547 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2024-06-28 03:05:04,547 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 282 transitions, 3417 flow [2024-06-28 03:05:04,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:05:04,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:04,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:04,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:05:04,548 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:04,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1787888423, now seen corresponding path program 2 times [2024-06-28 03:05:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:04,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211827138] [2024-06-28 03:05:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:04,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:05,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:05,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211827138] [2024-06-28 03:05:05,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211827138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:05,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:05,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:05,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007980435] [2024-06-28 03:05:05,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:05,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:05,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:05,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:05,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 282 transitions, 3417 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:05:05,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:05,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:05,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:06,541 INFO L124 PetriNetUnfolderBase]: 3168/5079 cut-off events. [2024-06-28 03:05:06,541 INFO L125 PetriNetUnfolderBase]: For 392556/392556 co-relation queries the response was YES. [2024-06-28 03:05:06,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40613 conditions, 5079 events. 3168/5079 cut-off events. For 392556/392556 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 30305 event pairs, 787 based on Foata normal form. 4/5080 useless extension candidates. Maximal degree in co-relation 40502. Up to 4913 conditions per place. [2024-06-28 03:05:06,597 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 273 selfloop transitions, 20 changer transitions 0/297 dead transitions. [2024-06-28 03:05:06,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 297 transitions, 4101 flow [2024-06-28 03:05:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:05:06,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 03:05:06,598 INFO L175 Difference]: Start difference. First operand has 246 places, 282 transitions, 3417 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:05:06,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 297 transitions, 4101 flow [2024-06-28 03:05:07,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 297 transitions, 4035 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:07,097 INFO L231 Difference]: Finished difference. Result has 248 places, 285 transitions, 3458 flow [2024-06-28 03:05:07,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3458, PETRI_PLACES=248, PETRI_TRANSITIONS=285} [2024-06-28 03:05:07,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 206 predicate places. [2024-06-28 03:05:07,097 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 285 transitions, 3458 flow [2024-06-28 03:05:07,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:05:07,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:07,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:07,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:05:07,098 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:07,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:07,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1634882219, now seen corresponding path program 3 times [2024-06-28 03:05:07,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:07,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22345942] [2024-06-28 03:05:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:07,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:07,833 INFO 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 03:05:07,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:07,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22345942] [2024-06-28 03:05:07,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22345942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:07,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:07,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:07,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903148053] [2024-06-28 03:05:07,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:07,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:07,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:07,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:07,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:07,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 285 transitions, 3458 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:05:07,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:07,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:07,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:09,059 INFO L124 PetriNetUnfolderBase]: 3188/5105 cut-off events. [2024-06-28 03:05:09,059 INFO L125 PetriNetUnfolderBase]: For 404881/404881 co-relation queries the response was YES. [2024-06-28 03:05:09,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41027 conditions, 5105 events. 3188/5105 cut-off events. For 404881/404881 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30412 event pairs, 736 based on Foata normal form. 4/5100 useless extension candidates. Maximal degree in co-relation 40915. Up to 4794 conditions per place. [2024-06-28 03:05:09,116 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 250 selfloop transitions, 52 changer transitions 0/306 dead transitions. [2024-06-28 03:05:09,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 306 transitions, 4346 flow [2024-06-28 03:05:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:05:09,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 03:05:09,118 INFO L175 Difference]: Start difference. First operand has 248 places, 285 transitions, 3458 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:05:09,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 306 transitions, 4346 flow [2024-06-28 03:05:09,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 306 transitions, 4223 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:05:09,672 INFO L231 Difference]: Finished difference. Result has 247 places, 288 transitions, 3505 flow [2024-06-28 03:05:09,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3505, PETRI_PLACES=247, PETRI_TRANSITIONS=288} [2024-06-28 03:05:09,673 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-28 03:05:09,673 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 288 transitions, 3505 flow [2024-06-28 03:05:09,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:05:09,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:09,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:09,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:05:09,674 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:09,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1787901443, now seen corresponding path program 4 times [2024-06-28 03:05:09,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:09,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227795558] [2024-06-28 03:05:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:09,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:10,396 INFO 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 03:05:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227795558] [2024-06-28 03:05:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227795558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261314627] [2024-06-28 03:05:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:10,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:10,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 288 transitions, 3505 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:05:10,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:10,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:10,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:11,623 INFO L124 PetriNetUnfolderBase]: 3176/5089 cut-off events. [2024-06-28 03:05:11,624 INFO L125 PetriNetUnfolderBase]: For 407937/407937 co-relation queries the response was YES. [2024-06-28 03:05:11,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40826 conditions, 5089 events. 3176/5089 cut-off events. For 407937/407937 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30352 event pairs, 734 based on Foata normal form. 4/5084 useless extension candidates. Maximal degree in co-relation 40715. Up to 4786 conditions per place. [2024-06-28 03:05:11,676 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 245 selfloop transitions, 55 changer transitions 0/304 dead transitions. [2024-06-28 03:05:11,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 304 transitions, 4189 flow [2024-06-28 03:05:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:05:11,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 03:05:11,678 INFO L175 Difference]: Start difference. First operand has 247 places, 288 transitions, 3505 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:05:11,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 304 transitions, 4189 flow [2024-06-28 03:05:12,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 304 transitions, 4005 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:12,216 INFO L231 Difference]: Finished difference. Result has 249 places, 288 transitions, 3437 flow [2024-06-28 03:05:12,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3437, PETRI_PLACES=249, PETRI_TRANSITIONS=288} [2024-06-28 03:05:12,217 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 03:05:12,217 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 288 transitions, 3437 flow [2024-06-28 03:05:12,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:05:12,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:12,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:12,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:05:12,218 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:12,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash -730306667, now seen corresponding path program 6 times [2024-06-28 03:05:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:12,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895778137] [2024-06-28 03:05:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:12,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:13,511 INFO 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 03:05:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895778137] [2024-06-28 03:05:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895778137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:13,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:13,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:13,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662234819] [2024-06-28 03:05:13,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:13,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:13,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:13,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:13,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:13,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 288 transitions, 3437 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:05:13,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:13,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:13,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:14,808 INFO L124 PetriNetUnfolderBase]: 3299/5343 cut-off events. [2024-06-28 03:05:14,808 INFO L125 PetriNetUnfolderBase]: For 431682/431684 co-relation queries the response was YES. [2024-06-28 03:05:14,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42281 conditions, 5343 events. 3299/5343 cut-off events. For 431682/431684 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32695 event pairs, 698 based on Foata normal form. 14/5354 useless extension candidates. Maximal degree in co-relation 42169. Up to 4796 conditions per place. [2024-06-28 03:05:14,867 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 287 selfloop transitions, 52 changer transitions 0/363 dead transitions. [2024-06-28 03:05:14,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 363 transitions, 4613 flow [2024-06-28 03:05:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 03:05:14,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458980044345898 [2024-06-28 03:05:14,868 INFO L175 Difference]: Start difference. First operand has 249 places, 288 transitions, 3437 flow. Second operand 11 states and 207 transitions. [2024-06-28 03:05:14,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 363 transitions, 4613 flow [2024-06-28 03:05:15,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 363 transitions, 4462 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:15,466 INFO L231 Difference]: Finished difference. Result has 257 places, 319 transitions, 3857 flow [2024-06-28 03:05:15,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3857, PETRI_PLACES=257, PETRI_TRANSITIONS=319} [2024-06-28 03:05:15,467 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-28 03:05:15,467 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 319 transitions, 3857 flow [2024-06-28 03:05:15,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:05:15,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:15,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:15,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:05:15,468 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:15,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash 915390723, now seen corresponding path program 7 times [2024-06-28 03:05:15,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:15,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350004831] [2024-06-28 03:05:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:15,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:16,872 INFO 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 03:05:16,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:16,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350004831] [2024-06-28 03:05:16,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350004831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:16,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:16,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:16,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703111579] [2024-06-28 03:05:16,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:16,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:16,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:17,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:17,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 319 transitions, 3857 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:05:17,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:17,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:17,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:18,273 INFO L124 PetriNetUnfolderBase]: 3447/5575 cut-off events. [2024-06-28 03:05:18,273 INFO L125 PetriNetUnfolderBase]: For 437007/437009 co-relation queries the response was YES. [2024-06-28 03:05:18,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44043 conditions, 5575 events. 3447/5575 cut-off events. For 437007/437009 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34285 event pairs, 692 based on Foata normal form. 14/5586 useless extension candidates. Maximal degree in co-relation 43926. Up to 4934 conditions per place. [2024-06-28 03:05:18,327 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 300 selfloop transitions, 73 changer transitions 0/397 dead transitions. [2024-06-28 03:05:18,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 397 transitions, 5189 flow [2024-06-28 03:05:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 03:05:18,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567627494456763 [2024-06-28 03:05:18,329 INFO L175 Difference]: Start difference. First operand has 257 places, 319 transitions, 3857 flow. Second operand 11 states and 206 transitions. [2024-06-28 03:05:18,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 397 transitions, 5189 flow [2024-06-28 03:05:18,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 397 transitions, 5013 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 03:05:18,923 INFO L231 Difference]: Finished difference. Result has 267 places, 355 transitions, 4413 flow [2024-06-28 03:05:18,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4413, PETRI_PLACES=267, PETRI_TRANSITIONS=355} [2024-06-28 03:05:18,924 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 03:05:18,924 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 355 transitions, 4413 flow [2024-06-28 03:05:18,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 03:05:18,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:18,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:05:18,924 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:18,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash 93638805, now seen corresponding path program 7 times [2024-06-28 03:05:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:18,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374757165] [2024-06-28 03:05:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:19,613 INFO 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 03:05:19,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:19,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374757165] [2024-06-28 03:05:19,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374757165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:19,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:19,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426746378] [2024-06-28 03:05:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:19,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:19,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:19,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:19,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 355 transitions, 4413 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:05:19,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:19,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:19,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:20,771 INFO L124 PetriNetUnfolderBase]: 3565/5713 cut-off events. [2024-06-28 03:05:20,772 INFO L125 PetriNetUnfolderBase]: For 424773/424775 co-relation queries the response was YES. [2024-06-28 03:05:20,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45158 conditions, 5713 events. 3565/5713 cut-off events. For 424773/424775 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34772 event pairs, 877 based on Foata normal form. 4/5714 useless extension candidates. Maximal degree in co-relation 45035. Up to 5462 conditions per place. [2024-06-28 03:05:20,832 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 340 selfloop transitions, 49 changer transitions 0/393 dead transitions. [2024-06-28 03:05:20,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 393 transitions, 5583 flow [2024-06-28 03:05:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:05:20,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:05:20,833 INFO L175 Difference]: Start difference. First operand has 267 places, 355 transitions, 4413 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:05:20,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 393 transitions, 5583 flow [2024-06-28 03:05:21,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 393 transitions, 5309 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:21,531 INFO L231 Difference]: Finished difference. Result has 270 places, 368 transitions, 4443 flow [2024-06-28 03:05:21,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4142, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4443, PETRI_PLACES=270, PETRI_TRANSITIONS=368} [2024-06-28 03:05:21,531 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-28 03:05:21,531 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 368 transitions, 4443 flow [2024-06-28 03:05:21,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:05:21,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:21,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:21,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:05:21,532 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:21,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1387217655, now seen corresponding path program 8 times [2024-06-28 03:05:21,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:21,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770838935] [2024-06-28 03:05:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:22,211 INFO 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 03:05:22,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:22,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770838935] [2024-06-28 03:05:22,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770838935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:22,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:22,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686657004] [2024-06-28 03:05:22,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:22,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:22,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:22,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:22,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:22,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 368 transitions, 4443 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:05:22,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:22,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:22,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:23,360 INFO L124 PetriNetUnfolderBase]: 3559/5707 cut-off events. [2024-06-28 03:05:23,360 INFO L125 PetriNetUnfolderBase]: For 425914/425916 co-relation queries the response was YES. [2024-06-28 03:05:23,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44348 conditions, 5707 events. 3559/5707 cut-off events. For 425914/425916 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34798 event pairs, 878 based on Foata normal form. 4/5708 useless extension candidates. Maximal degree in co-relation 44225. Up to 5501 conditions per place. [2024-06-28 03:05:23,424 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 346 selfloop transitions, 37 changer transitions 0/387 dead transitions. [2024-06-28 03:05:23,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 387 transitions, 5281 flow [2024-06-28 03:05:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:05:23,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-28 03:05:23,425 INFO L175 Difference]: Start difference. First operand has 270 places, 368 transitions, 4443 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:05:23,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 387 transitions, 5281 flow [2024-06-28 03:05:24,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 387 transitions, 5117 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:24,183 INFO L231 Difference]: Finished difference. Result has 272 places, 368 transitions, 4363 flow [2024-06-28 03:05:24,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4279, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4363, PETRI_PLACES=272, PETRI_TRANSITIONS=368} [2024-06-28 03:05:24,184 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 03:05:24,184 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 368 transitions, 4363 flow [2024-06-28 03:05:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 03:05:24,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:24,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:24,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:05:24,184 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:24,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1465879893, now seen corresponding path program 1 times [2024-06-28 03:05:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:24,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310672023] [2024-06-28 03:05:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:24,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:25,038 INFO 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 03:05:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310672023] [2024-06-28 03:05:25,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310672023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:25,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:25,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427980999] [2024-06-28 03:05:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:25,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:25,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 368 transitions, 4363 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:25,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:25,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:25,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:26,247 INFO L124 PetriNetUnfolderBase]: 3403/5537 cut-off events. [2024-06-28 03:05:26,247 INFO L125 PetriNetUnfolderBase]: For 375688/375688 co-relation queries the response was YES. [2024-06-28 03:05:26,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41744 conditions, 5537 events. 3403/5537 cut-off events. For 375688/375688 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 34507 event pairs, 921 based on Foata normal form. 1/5520 useless extension candidates. Maximal degree in co-relation 41621. Up to 5274 conditions per place. [2024-06-28 03:05:26,311 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 362 selfloop transitions, 24 changer transitions 0/395 dead transitions. [2024-06-28 03:05:26,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 395 transitions, 5445 flow [2024-06-28 03:05:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:05:26,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:05:26,312 INFO L175 Difference]: Start difference. First operand has 272 places, 368 transitions, 4363 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:05:26,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 395 transitions, 5445 flow [2024-06-28 03:05:26,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 395 transitions, 5334 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:26,938 INFO L231 Difference]: Finished difference. Result has 273 places, 374 transitions, 4420 flow [2024-06-28 03:05:26,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4252, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4420, PETRI_PLACES=273, PETRI_TRANSITIONS=374} [2024-06-28 03:05:26,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-28 03:05:26,938 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 374 transitions, 4420 flow [2024-06-28 03:05:26,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:26,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:26,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:26,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:05:26,939 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:26,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1465970258, now seen corresponding path program 1 times [2024-06-28 03:05:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:26,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300173444] [2024-06-28 03:05:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:27,747 INFO 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 03:05:27,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:27,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300173444] [2024-06-28 03:05:27,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300173444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:27,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:27,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459646302] [2024-06-28 03:05:27,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:27,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:27,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:27,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:27,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:27,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 374 transitions, 4420 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:27,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:27,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:27,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:28,884 INFO L124 PetriNetUnfolderBase]: 3413/5549 cut-off events. [2024-06-28 03:05:28,884 INFO L125 PetriNetUnfolderBase]: For 389693/389693 co-relation queries the response was YES. [2024-06-28 03:05:28,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42393 conditions, 5549 events. 3413/5549 cut-off events. For 389693/389693 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 34570 event pairs, 920 based on Foata normal form. 2/5537 useless extension candidates. Maximal degree in co-relation 42269. Up to 5298 conditions per place. [2024-06-28 03:05:28,949 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 366 selfloop transitions, 19 changer transitions 0/394 dead transitions. [2024-06-28 03:05:28,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 394 transitions, 5300 flow [2024-06-28 03:05:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:05:28,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-28 03:05:28,950 INFO L175 Difference]: Start difference. First operand has 273 places, 374 transitions, 4420 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:05:28,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 394 transitions, 5300 flow [2024-06-28 03:05:29,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 394 transitions, 5217 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:05:29,508 INFO L231 Difference]: Finished difference. Result has 277 places, 377 transitions, 4441 flow [2024-06-28 03:05:29,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4337, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4441, PETRI_PLACES=277, PETRI_TRANSITIONS=377} [2024-06-28 03:05:29,509 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-28 03:05:29,509 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 377 transitions, 4441 flow [2024-06-28 03:05:29,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:29,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:29,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:29,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:05:29,509 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:29,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash -460492837, now seen corresponding path program 2 times [2024-06-28 03:05:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:29,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137391759] [2024-06-28 03:05:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:30,507 INFO 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 03:05:30,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137391759] [2024-06-28 03:05:30,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137391759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:30,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:30,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269346827] [2024-06-28 03:05:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:30,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:30,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:30,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:30,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 377 transitions, 4441 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:30,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:30,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:30,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:31,666 INFO L124 PetriNetUnfolderBase]: 3410/5545 cut-off events. [2024-06-28 03:05:31,666 INFO L125 PetriNetUnfolderBase]: For 393730/393730 co-relation queries the response was YES. [2024-06-28 03:05:31,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42646 conditions, 5545 events. 3410/5545 cut-off events. For 393730/393730 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 34565 event pairs, 920 based on Foata normal form. 1/5532 useless extension candidates. Maximal degree in co-relation 42520. Up to 5297 conditions per place. [2024-06-28 03:05:31,731 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 366 selfloop transitions, 18 changer transitions 0/393 dead transitions. [2024-06-28 03:05:31,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 393 transitions, 5261 flow [2024-06-28 03:05:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:05:31,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-28 03:05:31,732 INFO L175 Difference]: Start difference. First operand has 277 places, 377 transitions, 4441 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:05:31,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 393 transitions, 5261 flow [2024-06-28 03:05:32,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 393 transitions, 5153 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:32,417 INFO L231 Difference]: Finished difference. Result has 278 places, 377 transitions, 4375 flow [2024-06-28 03:05:32,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4333, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4375, PETRI_PLACES=278, PETRI_TRANSITIONS=377} [2024-06-28 03:05:32,419 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-28 03:05:32,420 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 377 transitions, 4375 flow [2024-06-28 03:05:32,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:32,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:32,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:32,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:05:32,420 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:32,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:32,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1469694908, now seen corresponding path program 2 times [2024-06-28 03:05:32,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:32,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765899553] [2024-06-28 03:05:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:32,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:33,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:33,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765899553] [2024-06-28 03:05:33,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765899553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:33,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:33,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:33,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782463499] [2024-06-28 03:05:33,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:33,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:33,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:33,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:33,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:33,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:33,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 377 transitions, 4375 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:33,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:33,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:33,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:34,258 INFO L124 PetriNetUnfolderBase]: 3444/5594 cut-off events. [2024-06-28 03:05:34,259 INFO L125 PetriNetUnfolderBase]: For 413898/413898 co-relation queries the response was YES. [2024-06-28 03:05:34,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43315 conditions, 5594 events. 3444/5594 cut-off events. For 413898/413898 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 34852 event pairs, 924 based on Foata normal form. 2/5582 useless extension candidates. Maximal degree in co-relation 43188. Up to 5269 conditions per place. [2024-06-28 03:05:34,324 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 347 selfloop transitions, 48 changer transitions 0/404 dead transitions. [2024-06-28 03:05:34,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 404 transitions, 5681 flow [2024-06-28 03:05:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:05:34,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:05:34,325 INFO L175 Difference]: Start difference. First operand has 278 places, 377 transitions, 4375 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:05:34,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 404 transitions, 5681 flow [2024-06-28 03:05:35,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 404 transitions, 5635 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:35,150 INFO L231 Difference]: Finished difference. Result has 280 places, 386 transitions, 4617 flow [2024-06-28 03:05:35,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4329, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4617, PETRI_PLACES=280, PETRI_TRANSITIONS=386} [2024-06-28 03:05:35,151 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 03:05:35,151 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 386 transitions, 4617 flow [2024-06-28 03:05:35,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:35,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:35,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:35,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:05:35,152 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:35,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1469689173, now seen corresponding path program 3 times [2024-06-28 03:05:35,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:35,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800964865] [2024-06-28 03:05:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:36,171 INFO 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 03:05:36,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:36,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800964865] [2024-06-28 03:05:36,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800964865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:36,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:36,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:36,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827548313] [2024-06-28 03:05:36,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:36,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:36,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:36,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:36,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 386 transitions, 4617 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:36,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:36,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:36,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:37,412 INFO L124 PetriNetUnfolderBase]: 3449/5599 cut-off events. [2024-06-28 03:05:37,413 INFO L125 PetriNetUnfolderBase]: For 423176/423176 co-relation queries the response was YES. [2024-06-28 03:05:37,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43836 conditions, 5599 events. 3449/5599 cut-off events. For 423176/423176 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 34838 event pairs, 927 based on Foata normal form. 1/5584 useless extension candidates. Maximal degree in co-relation 43708. Up to 5336 conditions per place. [2024-06-28 03:05:37,481 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 362 selfloop transitions, 31 changer transitions 0/402 dead transitions. [2024-06-28 03:05:37,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 402 transitions, 5507 flow [2024-06-28 03:05:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:05:37,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-28 03:05:37,482 INFO L175 Difference]: Start difference. First operand has 280 places, 386 transitions, 4617 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:05:37,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 402 transitions, 5507 flow [2024-06-28 03:05:38,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 402 transitions, 5416 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:38,280 INFO L231 Difference]: Finished difference. Result has 285 places, 389 transitions, 4664 flow [2024-06-28 03:05:38,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4664, PETRI_PLACES=285, PETRI_TRANSITIONS=389} [2024-06-28 03:05:38,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 243 predicate places. [2024-06-28 03:05:38,282 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 389 transitions, 4664 flow [2024-06-28 03:05:38,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:38,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:38,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:38,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:05:38,282 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:38,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:38,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1469689328, now seen corresponding path program 3 times [2024-06-28 03:05:38,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:38,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555099246] [2024-06-28 03:05:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:38,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:39,190 INFO 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 03:05:39,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:39,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555099246] [2024-06-28 03:05:39,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555099246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:39,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:39,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830886020] [2024-06-28 03:05:39,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:39,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:39,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:39,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:39,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 389 transitions, 4664 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:39,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:39,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:39,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:40,414 INFO L124 PetriNetUnfolderBase]: 3443/5593 cut-off events. [2024-06-28 03:05:40,414 INFO L125 PetriNetUnfolderBase]: For 431310/431310 co-relation queries the response was YES. [2024-06-28 03:05:40,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44133 conditions, 5593 events. 3443/5593 cut-off events. For 431310/431310 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 34837 event pairs, 923 based on Foata normal form. 2/5581 useless extension candidates. Maximal degree in co-relation 44003. Up to 5271 conditions per place. [2024-06-28 03:05:40,473 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 351 selfloop transitions, 47 changer transitions 0/407 dead transitions. [2024-06-28 03:05:40,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 407 transitions, 5662 flow [2024-06-28 03:05:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:05:40,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:05:40,474 INFO L175 Difference]: Start difference. First operand has 285 places, 389 transitions, 4664 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:05:40,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 407 transitions, 5662 flow [2024-06-28 03:05:41,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 407 transitions, 5512 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:41,316 INFO L231 Difference]: Finished difference. Result has 287 places, 389 transitions, 4614 flow [2024-06-28 03:05:41,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4614, PETRI_PLACES=287, PETRI_TRANSITIONS=389} [2024-06-28 03:05:41,316 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 03:05:41,316 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 389 transitions, 4614 flow [2024-06-28 03:05:41,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:41,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:41,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:41,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:05:41,317 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:41,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:41,317 INFO L85 PathProgramCache]: Analyzing trace with hash -934194432, now seen corresponding path program 4 times [2024-06-28 03:05:41,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:41,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173346843] [2024-06-28 03:05:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:41,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:42,051 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 03:05:42,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:42,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173346843] [2024-06-28 03:05:42,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173346843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:42,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:42,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:42,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202063971] [2024-06-28 03:05:42,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:42,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:42,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 389 transitions, 4614 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:42,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:42,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:42,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:43,393 INFO L124 PetriNetUnfolderBase]: 3453/5609 cut-off events. [2024-06-28 03:05:43,393 INFO L125 PetriNetUnfolderBase]: For 441606/441606 co-relation queries the response was YES. [2024-06-28 03:05:43,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44373 conditions, 5609 events. 3453/5609 cut-off events. For 441606/441606 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 34984 event pairs, 921 based on Foata normal form. 2/5595 useless extension candidates. Maximal degree in co-relation 44242. Up to 5359 conditions per place. [2024-06-28 03:05:43,449 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 374 selfloop transitions, 21 changer transitions 0/404 dead transitions. [2024-06-28 03:05:43,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 404 transitions, 5510 flow [2024-06-28 03:05:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 03:05:43,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39295392953929537 [2024-06-28 03:05:43,450 INFO L175 Difference]: Start difference. First operand has 287 places, 389 transitions, 4614 flow. Second operand 9 states and 145 transitions. [2024-06-28 03:05:43,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 404 transitions, 5510 flow [2024-06-28 03:05:44,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 404 transitions, 5392 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:44,289 INFO L231 Difference]: Finished difference. Result has 288 places, 392 transitions, 4620 flow [2024-06-28 03:05:44,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4502, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4620, PETRI_PLACES=288, PETRI_TRANSITIONS=392} [2024-06-28 03:05:44,290 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 03:05:44,290 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 392 transitions, 4620 flow [2024-06-28 03:05:44,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:44,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:44,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:44,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:05:44,290 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:44,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1629168299, now seen corresponding path program 4 times [2024-06-28 03:05:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:44,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4584356] [2024-06-28 03:05:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:44,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:45,164 INFO 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 03:05:45,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4584356] [2024-06-28 03:05:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4584356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:45,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:45,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418954891] [2024-06-28 03:05:45,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:45,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:45,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:45,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:45,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:45,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:45,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 392 transitions, 4620 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:45,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:45,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:45,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:46,401 INFO L124 PetriNetUnfolderBase]: 3450/5605 cut-off events. [2024-06-28 03:05:46,401 INFO L125 PetriNetUnfolderBase]: For 445986/445986 co-relation queries the response was YES. [2024-06-28 03:05:46,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44311 conditions, 5605 events. 3450/5605 cut-off events. For 445986/445986 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 34933 event pairs, 923 based on Foata normal form. 1/5592 useless extension candidates. Maximal degree in co-relation 44179. Up to 5365 conditions per place. [2024-06-28 03:05:46,457 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 378 selfloop transitions, 18 changer transitions 0/405 dead transitions. [2024-06-28 03:05:46,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 405 transitions, 5510 flow [2024-06-28 03:05:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:05:46,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 03:05:46,458 INFO L175 Difference]: Start difference. First operand has 288 places, 392 transitions, 4620 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:05:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 405 transitions, 5510 flow [2024-06-28 03:05:47,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 405 transitions, 5420 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:47,379 INFO L231 Difference]: Finished difference. Result has 289 places, 395 transitions, 4648 flow [2024-06-28 03:05:47,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4648, PETRI_PLACES=289, PETRI_TRANSITIONS=395} [2024-06-28 03:05:47,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-28 03:05:47,379 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 395 transitions, 4648 flow [2024-06-28 03:05:47,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:47,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:47,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:05:47,380 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:47,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash -318234896, now seen corresponding path program 5 times [2024-06-28 03:05:47,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:47,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700629218] [2024-06-28 03:05:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:47,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:48,090 INFO 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 03:05:48,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:48,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700629218] [2024-06-28 03:05:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700629218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:48,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:48,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187682118] [2024-06-28 03:05:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:48,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:48,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:48,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:48,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:48,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:48,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 395 transitions, 4648 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:48,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:48,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:48,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:49,249 INFO L124 PetriNetUnfolderBase]: 3460/5617 cut-off events. [2024-06-28 03:05:49,249 INFO L125 PetriNetUnfolderBase]: For 457975/457975 co-relation queries the response was YES. [2024-06-28 03:05:49,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44901 conditions, 5617 events. 3460/5617 cut-off events. For 457975/457975 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 34924 event pairs, 922 based on Foata normal form. 2/5605 useless extension candidates. Maximal degree in co-relation 44768. Up to 5340 conditions per place. [2024-06-28 03:05:49,473 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 370 selfloop transitions, 33 changer transitions 0/412 dead transitions. [2024-06-28 03:05:49,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 412 transitions, 5716 flow [2024-06-28 03:05:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:05:49,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 03:05:49,474 INFO L175 Difference]: Start difference. First operand has 289 places, 395 transitions, 4648 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:05:49,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 412 transitions, 5716 flow [2024-06-28 03:05:50,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 412 transitions, 5620 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:50,406 INFO L231 Difference]: Finished difference. Result has 291 places, 398 transitions, 4694 flow [2024-06-28 03:05:50,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4552, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4694, PETRI_PLACES=291, PETRI_TRANSITIONS=398} [2024-06-28 03:05:50,407 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-28 03:05:50,407 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 398 transitions, 4694 flow [2024-06-28 03:05:50,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:50,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:50,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:50,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:05:50,408 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:50,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -312877502, now seen corresponding path program 6 times [2024-06-28 03:05:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:50,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004044422] [2024-06-28 03:05:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:50,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:51,187 INFO 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 03:05:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004044422] [2024-06-28 03:05:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004044422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:51,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:51,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:51,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114175813] [2024-06-28 03:05:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:51,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:51,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:51,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 398 transitions, 4694 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:51,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:51,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:51,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:52,426 INFO L124 PetriNetUnfolderBase]: 3454/5609 cut-off events. [2024-06-28 03:05:52,426 INFO L125 PetriNetUnfolderBase]: For 462304/462304 co-relation queries the response was YES. [2024-06-28 03:05:52,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44809 conditions, 5609 events. 3454/5609 cut-off events. For 462304/462304 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 34893 event pairs, 924 based on Foata normal form. 2/5597 useless extension candidates. Maximal degree in co-relation 44675. Up to 5335 conditions per place. [2024-06-28 03:05:52,494 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 370 selfloop transitions, 32 changer transitions 0/411 dead transitions. [2024-06-28 03:05:52,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 411 transitions, 5538 flow [2024-06-28 03:05:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:05:52,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 03:05:52,495 INFO L175 Difference]: Start difference. First operand has 291 places, 398 transitions, 4694 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:05:52,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 411 transitions, 5538 flow [2024-06-28 03:05:53,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 411 transitions, 5357 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:53,628 INFO L231 Difference]: Finished difference. Result has 293 places, 398 transitions, 4583 flow [2024-06-28 03:05:53,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4583, PETRI_PLACES=293, PETRI_TRANSITIONS=398} [2024-06-28 03:05:53,628 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-28 03:05:53,628 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 398 transitions, 4583 flow [2024-06-28 03:05:53,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:05:53,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:53,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:53,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:05:53,629 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:53,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:53,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1787440101, now seen corresponding path program 1 times [2024-06-28 03:05:53,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:53,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353760588] [2024-06-28 03:05:53,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:53,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:54,800 INFO 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 03:05:54,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353760588] [2024-06-28 03:05:54,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353760588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:54,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:54,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:54,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975706119] [2024-06-28 03:05:54,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:54,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:54,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:54,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:54,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 398 transitions, 4583 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:05:54,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:54,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:54,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:56,317 INFO L124 PetriNetUnfolderBase]: 3640/5816 cut-off events. [2024-06-28 03:05:56,317 INFO L125 PetriNetUnfolderBase]: For 545153/545153 co-relation queries the response was YES. [2024-06-28 03:05:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47758 conditions, 5816 events. 3640/5816 cut-off events. For 545153/545153 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35296 event pairs, 993 based on Foata normal form. 2/5815 useless extension candidates. Maximal degree in co-relation 47623. Up to 5646 conditions per place. [2024-06-28 03:05:56,388 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 388 selfloop transitions, 19 changer transitions 0/411 dead transitions. [2024-06-28 03:05:56,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 411 transitions, 5477 flow [2024-06-28 03:05:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 03:05:56,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-28 03:05:56,390 INFO L175 Difference]: Start difference. First operand has 293 places, 398 transitions, 4583 flow. Second operand 8 states and 126 transitions. [2024-06-28 03:05:56,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 411 transitions, 5477 flow [2024-06-28 03:05:57,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 411 transitions, 5395 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:57,557 INFO L231 Difference]: Finished difference. Result has 294 places, 400 transitions, 4598 flow [2024-06-28 03:05:57,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4501, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4598, PETRI_PLACES=294, PETRI_TRANSITIONS=400} [2024-06-28 03:05:57,557 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-28 03:05:57,558 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 400 transitions, 4598 flow [2024-06-28 03:05:57,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:05:57,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:57,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:57,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:05:57,558 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:57,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash -579072597, now seen corresponding path program 1 times [2024-06-28 03:05:57,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:57,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259207196] [2024-06-28 03:05:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:57,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:58,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:58,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259207196] [2024-06-28 03:05:58,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259207196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:58,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:58,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:58,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078775470] [2024-06-28 03:05:58,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:58,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:58,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:58,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:05:58,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 400 transitions, 4598 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:05:58,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:58,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:05:58,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:59,978 INFO L124 PetriNetUnfolderBase]: 3645/5832 cut-off events. [2024-06-28 03:05:59,978 INFO L125 PetriNetUnfolderBase]: For 553349/553351 co-relation queries the response was YES. [2024-06-28 03:06:00,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48047 conditions, 5832 events. 3645/5832 cut-off events. For 553349/553351 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35501 event pairs, 859 based on Foata normal form. 3/5832 useless extension candidates. Maximal degree in co-relation 47911. Up to 5511 conditions per place. [2024-06-28 03:06:00,052 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 361 selfloop transitions, 65 changer transitions 0/430 dead transitions. [2024-06-28 03:06:00,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 430 transitions, 5844 flow [2024-06-28 03:06:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:06:00,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:06:00,053 INFO L175 Difference]: Start difference. First operand has 294 places, 400 transitions, 4598 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:06:00,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 430 transitions, 5844 flow [2024-06-28 03:06:01,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 430 transitions, 5763 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:01,275 INFO L231 Difference]: Finished difference. Result has 296 places, 406 transitions, 4824 flow [2024-06-28 03:06:01,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4517, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4824, PETRI_PLACES=296, PETRI_TRANSITIONS=406} [2024-06-28 03:06:01,275 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-28 03:06:01,275 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 406 transitions, 4824 flow [2024-06-28 03:06:01,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:01,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:01,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:01,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:06:01,276 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:01,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:01,276 INFO L85 PathProgramCache]: Analyzing trace with hash -578922867, now seen corresponding path program 2 times [2024-06-28 03:06:01,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:01,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799731356] [2024-06-28 03:06:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:01,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:02,111 INFO 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 03:06:02,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799731356] [2024-06-28 03:06:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799731356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:02,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:02,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:02,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992353758] [2024-06-28 03:06:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:02,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:02,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:02,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:02,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:02,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:02,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 406 transitions, 4824 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:02,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:02,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:02,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:03,564 INFO L124 PetriNetUnfolderBase]: 3655/5844 cut-off events. [2024-06-28 03:06:03,564 INFO L125 PetriNetUnfolderBase]: For 569469/569471 co-relation queries the response was YES. [2024-06-28 03:06:03,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48792 conditions, 5844 events. 3655/5844 cut-off events. For 569469/569471 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35562 event pairs, 873 based on Foata normal form. 3/5844 useless extension candidates. Maximal degree in co-relation 48655. Up to 5582 conditions per place. [2024-06-28 03:06:03,626 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 370 selfloop transitions, 58 changer transitions 0/432 dead transitions. [2024-06-28 03:06:03,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 432 transitions, 5861 flow [2024-06-28 03:06:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:06:03,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:06:03,627 INFO L175 Difference]: Start difference. First operand has 296 places, 406 transitions, 4824 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:06:03,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 432 transitions, 5861 flow [2024-06-28 03:06:04,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 432 transitions, 5650 flow, removed 90 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:04,819 INFO L231 Difference]: Finished difference. Result has 301 places, 412 transitions, 4858 flow [2024-06-28 03:06:04,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4858, PETRI_PLACES=301, PETRI_TRANSITIONS=412} [2024-06-28 03:06:04,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-06-28 03:06:04,820 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 412 transitions, 4858 flow [2024-06-28 03:06:04,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:04,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:04,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:06:04,820 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:04,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash -463602681, now seen corresponding path program 1 times [2024-06-28 03:06:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950972823] [2024-06-28 03:06:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:05,558 INFO 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 03:06:05,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:05,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950972823] [2024-06-28 03:06:05,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950972823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:05,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:05,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770073904] [2024-06-28 03:06:05,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:05,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:05,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:05,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:05,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:05,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:05,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 412 transitions, 4858 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:05,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:05,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:05,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:06,919 INFO L124 PetriNetUnfolderBase]: 3665/5851 cut-off events. [2024-06-28 03:06:06,919 INFO L125 PetriNetUnfolderBase]: For 584412/584414 co-relation queries the response was YES. [2024-06-28 03:06:06,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49002 conditions, 5851 events. 3665/5851 cut-off events. For 584412/584414 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35569 event pairs, 872 based on Foata normal form. 4/5852 useless extension candidates. Maximal degree in co-relation 48863. Up to 5584 conditions per place. [2024-06-28 03:06:06,997 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 398 selfloop transitions, 36 changer transitions 0/438 dead transitions. [2024-06-28 03:06:06,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 438 transitions, 5900 flow [2024-06-28 03:06:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:06:06,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:06:06,998 INFO L175 Difference]: Start difference. First operand has 301 places, 412 transitions, 4858 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:06:06,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 438 transitions, 5900 flow [2024-06-28 03:06:08,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 438 transitions, 5762 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:08,223 INFO L231 Difference]: Finished difference. Result has 304 places, 415 transitions, 4889 flow [2024-06-28 03:06:08,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4724, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4889, PETRI_PLACES=304, PETRI_TRANSITIONS=415} [2024-06-28 03:06:08,224 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 03:06:08,224 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 415 transitions, 4889 flow [2024-06-28 03:06:08,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:08,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:08,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:08,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:06:08,224 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:08,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2056317083, now seen corresponding path program 2 times [2024-06-28 03:06:08,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:08,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165321780] [2024-06-28 03:06:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165321780] [2024-06-28 03:06:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165321780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:09,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699783362] [2024-06-28 03:06:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:09,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:09,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:09,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:09,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 415 transitions, 4889 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:06:09,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:09,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:09,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:10,287 INFO L124 PetriNetUnfolderBase]: 3691/5892 cut-off events. [2024-06-28 03:06:10,287 INFO L125 PetriNetUnfolderBase]: For 602834/602836 co-relation queries the response was YES. [2024-06-28 03:06:10,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49720 conditions, 5892 events. 3691/5892 cut-off events. For 602834/602836 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 35794 event pairs, 883 based on Foata normal form. 4/5893 useless extension candidates. Maximal degree in co-relation 49580. Up to 5518 conditions per place. [2024-06-28 03:06:10,362 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 372 selfloop transitions, 67 changer transitions 0/443 dead transitions. [2024-06-28 03:06:10,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 443 transitions, 6209 flow [2024-06-28 03:06:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:06:10,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 03:06:10,363 INFO L175 Difference]: Start difference. First operand has 304 places, 415 transitions, 4889 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:06:10,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 443 transitions, 6209 flow [2024-06-28 03:06:11,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 443 transitions, 6074 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:11,633 INFO L231 Difference]: Finished difference. Result has 306 places, 421 transitions, 5074 flow [2024-06-28 03:06:11,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4754, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5074, PETRI_PLACES=306, PETRI_TRANSITIONS=421} [2024-06-28 03:06:11,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 03:06:11,633 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 421 transitions, 5074 flow [2024-06-28 03:06:11,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:06:11,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:11,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:11,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:06:11,634 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:11,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:11,634 INFO L85 PathProgramCache]: Analyzing trace with hash -463482525, now seen corresponding path program 1 times [2024-06-28 03:06:11,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:11,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127148367] [2024-06-28 03:06:11,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:11,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:12,390 INFO 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 03:06:12,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127148367] [2024-06-28 03:06:12,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127148367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:12,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:12,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:12,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191451975] [2024-06-28 03:06:12,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:12,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:12,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:12,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:12,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:12,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:12,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 421 transitions, 5074 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:12,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:12,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:12,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:13,673 INFO L124 PetriNetUnfolderBase]: 3722/5932 cut-off events. [2024-06-28 03:06:13,673 INFO L125 PetriNetUnfolderBase]: For 628346/628349 co-relation queries the response was YES. [2024-06-28 03:06:13,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50741 conditions, 5932 events. 3722/5932 cut-off events. For 628346/628349 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36037 event pairs, 876 based on Foata normal form. 4/5931 useless extension candidates. Maximal degree in co-relation 50600. Up to 5625 conditions per place. [2024-06-28 03:06:13,749 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 392 selfloop transitions, 62 changer transitions 0/458 dead transitions. [2024-06-28 03:06:13,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 458 transitions, 6462 flow [2024-06-28 03:06:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:06:13,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:06:13,750 INFO L175 Difference]: Start difference. First operand has 306 places, 421 transitions, 5074 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:06:13,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 458 transitions, 6462 flow [2024-06-28 03:06:15,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 458 transitions, 6315 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:15,066 INFO L231 Difference]: Finished difference. Result has 313 places, 437 transitions, 5328 flow [2024-06-28 03:06:15,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4927, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5328, PETRI_PLACES=313, PETRI_TRANSITIONS=437} [2024-06-28 03:06:15,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 271 predicate places. [2024-06-28 03:06:15,067 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 437 transitions, 5328 flow [2024-06-28 03:06:15,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:15,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:15,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:15,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:06:15,068 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:15,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:15,068 INFO L85 PathProgramCache]: Analyzing trace with hash -286356027, now seen corresponding path program 3 times [2024-06-28 03:06:15,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:15,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200118221] [2024-06-28 03:06:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:15,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:15,935 INFO 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 03:06:15,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:15,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200118221] [2024-06-28 03:06:15,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200118221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:15,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998291653] [2024-06-28 03:06:15,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:15,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:15,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:15,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:15,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 437 transitions, 5328 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:15,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:15,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:15,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:17,395 INFO L124 PetriNetUnfolderBase]: 3727/5942 cut-off events. [2024-06-28 03:06:17,396 INFO L125 PetriNetUnfolderBase]: For 643492/643492 co-relation queries the response was YES. [2024-06-28 03:06:17,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51734 conditions, 5942 events. 3727/5942 cut-off events. For 643492/643492 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 36136 event pairs, 771 based on Foata normal form. 1/5940 useless extension candidates. Maximal degree in co-relation 51589. Up to 5682 conditions per place. [2024-06-28 03:06:17,464 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 395 selfloop transitions, 56 changer transitions 0/455 dead transitions. [2024-06-28 03:06:17,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 455 transitions, 6322 flow [2024-06-28 03:06:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:06:17,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-28 03:06:17,465 INFO L175 Difference]: Start difference. First operand has 313 places, 437 transitions, 5328 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:06:17,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 455 transitions, 6322 flow [2024-06-28 03:06:18,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 455 transitions, 6204 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:18,904 INFO L231 Difference]: Finished difference. Result has 318 places, 440 transitions, 5380 flow [2024-06-28 03:06:18,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5210, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5380, PETRI_PLACES=318, PETRI_TRANSITIONS=440} [2024-06-28 03:06:18,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2024-06-28 03:06:18,904 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 440 transitions, 5380 flow [2024-06-28 03:06:18,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:18,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:18,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:06:18,905 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1397190681, now seen corresponding path program 2 times [2024-06-28 03:06:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071804345] [2024-06-28 03:06:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:19,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:19,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071804345] [2024-06-28 03:06:19,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071804345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:19,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:19,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370602795] [2024-06-28 03:06:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:19,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:19,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:19,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:19,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:19,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 440 transitions, 5380 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:06:19,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:19,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:19,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:21,049 INFO L124 PetriNetUnfolderBase]: 3747/5978 cut-off events. [2024-06-28 03:06:21,049 INFO L125 PetriNetUnfolderBase]: For 667642/667644 co-relation queries the response was YES. [2024-06-28 03:06:21,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52092 conditions, 5978 events. 3747/5978 cut-off events. For 667642/667644 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 36468 event pairs, 882 based on Foata normal form. 6/5981 useless extension candidates. Maximal degree in co-relation 51945. Up to 5747 conditions per place. [2024-06-28 03:06:21,129 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 411 selfloop transitions, 48 changer transitions 0/463 dead transitions. [2024-06-28 03:06:21,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 463 transitions, 6483 flow [2024-06-28 03:06:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:06:21,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:06:21,130 INFO L175 Difference]: Start difference. First operand has 318 places, 440 transitions, 5380 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:06:21,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 463 transitions, 6483 flow [2024-06-28 03:06:23,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 463 transitions, 6300 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:23,088 INFO L231 Difference]: Finished difference. Result has 320 places, 447 transitions, 5438 flow [2024-06-28 03:06:23,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5201, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5438, PETRI_PLACES=320, PETRI_TRANSITIONS=447} [2024-06-28 03:06:23,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 278 predicate places. [2024-06-28 03:06:23,089 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 447 transitions, 5438 flow [2024-06-28 03:06:23,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:06:23,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:23,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:23,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:06:23,090 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:23,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash -179178859, now seen corresponding path program 3 times [2024-06-28 03:06:23,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290321298] [2024-06-28 03:06:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:23,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:23,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290321298] [2024-06-28 03:06:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290321298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:23,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:23,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:23,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181624533] [2024-06-28 03:06:23,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:23,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:23,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:23,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:23,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 447 transitions, 5438 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:23,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:23,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:23,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:25,144 INFO L124 PetriNetUnfolderBase]: 3767/6006 cut-off events. [2024-06-28 03:06:25,144 INFO L125 PetriNetUnfolderBase]: For 681977/681979 co-relation queries the response was YES. [2024-06-28 03:06:25,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52541 conditions, 6006 events. 3767/6006 cut-off events. For 681977/681979 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 36609 event pairs, 878 based on Foata normal form. 6/6009 useless extension candidates. Maximal degree in co-relation 52393. Up to 5737 conditions per place. [2024-06-28 03:06:25,230 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 406 selfloop transitions, 60 changer transitions 0/470 dead transitions. [2024-06-28 03:06:25,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 470 transitions, 6570 flow [2024-06-28 03:06:25,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:06:25,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 03:06:25,232 INFO L175 Difference]: Start difference. First operand has 320 places, 447 transitions, 5438 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:06:25,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 470 transitions, 6570 flow [2024-06-28 03:06:27,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 470 transitions, 6418 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:27,183 INFO L231 Difference]: Finished difference. Result has 323 places, 453 transitions, 5551 flow [2024-06-28 03:06:27,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5286, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5551, PETRI_PLACES=323, PETRI_TRANSITIONS=453} [2024-06-28 03:06:27,184 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-06-28 03:06:27,184 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 453 transitions, 5551 flow [2024-06-28 03:06:27,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:27,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:27,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:27,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:06:27,184 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:27,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1488849861, now seen corresponding path program 3 times [2024-06-28 03:06:27,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:27,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580038425] [2024-06-28 03:06:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:27,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:27,968 INFO 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 03:06:27,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:27,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580038425] [2024-06-28 03:06:27,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580038425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:27,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:27,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:27,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632209292] [2024-06-28 03:06:27,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:27,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:27,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:27,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:28,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:28,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 453 transitions, 5551 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:06:28,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:28,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:28,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:29,417 INFO L124 PetriNetUnfolderBase]: 3777/6022 cut-off events. [2024-06-28 03:06:29,417 INFO L125 PetriNetUnfolderBase]: For 691412/691414 co-relation queries the response was YES. [2024-06-28 03:06:29,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53199 conditions, 6022 events. 3777/6022 cut-off events. For 691412/691414 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 36755 event pairs, 877 based on Foata normal form. 4/6023 useless extension candidates. Maximal degree in co-relation 53051. Up to 5784 conditions per place. [2024-06-28 03:06:29,498 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 427 selfloop transitions, 42 changer transitions 0/473 dead transitions. [2024-06-28 03:06:29,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 473 transitions, 6637 flow [2024-06-28 03:06:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:06:29,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-28 03:06:29,499 INFO L175 Difference]: Start difference. First operand has 323 places, 453 transitions, 5551 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:06:29,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 473 transitions, 6637 flow [2024-06-28 03:06:31,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 473 transitions, 6440 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:31,440 INFO L231 Difference]: Finished difference. Result has 325 places, 456 transitions, 5522 flow [2024-06-28 03:06:31,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5354, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5522, PETRI_PLACES=325, PETRI_TRANSITIONS=456} [2024-06-28 03:06:31,441 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-28 03:06:31,441 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 456 transitions, 5522 flow [2024-06-28 03:06:31,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:06:31,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:31,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:31,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:06:31,441 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:31,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash -581932533, now seen corresponding path program 1 times [2024-06-28 03:06:31,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:31,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511371306] [2024-06-28 03:06:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:32,355 INFO 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 03:06:32,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511371306] [2024-06-28 03:06:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511371306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:32,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910191759] [2024-06-28 03:06:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:32,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:32,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:32,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:32,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:32,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:32,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 456 transitions, 5522 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:32,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:32,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:32,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:33,928 INFO L124 PetriNetUnfolderBase]: 3785/6034 cut-off events. [2024-06-28 03:06:33,928 INFO L125 PetriNetUnfolderBase]: For 705474/705476 co-relation queries the response was YES. [2024-06-28 03:06:33,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53337 conditions, 6034 events. 3785/6034 cut-off events. For 705474/705476 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36712 event pairs, 743 based on Foata normal form. 4/6035 useless extension candidates. Maximal degree in co-relation 53188. Up to 5695 conditions per place. [2024-06-28 03:06:34,004 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 427 selfloop transitions, 55 changer transitions 0/486 dead transitions. [2024-06-28 03:06:34,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 486 transitions, 6834 flow [2024-06-28 03:06:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:06:34,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:06:34,005 INFO L175 Difference]: Start difference. First operand has 325 places, 456 transitions, 5522 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:06:34,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 486 transitions, 6834 flow [2024-06-28 03:06:35,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 486 transitions, 6704 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:35,906 INFO L231 Difference]: Finished difference. Result has 327 places, 460 transitions, 5603 flow [2024-06-28 03:06:35,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5603, PETRI_PLACES=327, PETRI_TRANSITIONS=460} [2024-06-28 03:06:35,906 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-28 03:06:35,906 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 460 transitions, 5603 flow [2024-06-28 03:06:35,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:35,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:35,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:06:35,907 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:35,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash -573361653, now seen corresponding path program 2 times [2024-06-28 03:06:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:35,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997396565] [2024-06-28 03:06:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:36,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:36,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997396565] [2024-06-28 03:06:36,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997396565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:36,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:36,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:36,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965973350] [2024-06-28 03:06:36,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:36,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:36,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:36,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:36,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 460 transitions, 5603 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:36,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:36,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:36,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:38,435 INFO L124 PetriNetUnfolderBase]: 3793/6044 cut-off events. [2024-06-28 03:06:38,435 INFO L125 PetriNetUnfolderBase]: For 720109/720111 co-relation queries the response was YES. [2024-06-28 03:06:38,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53709 conditions, 6044 events. 3793/6044 cut-off events. For 720109/720111 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 36892 event pairs, 875 based on Foata normal form. 4/6045 useless extension candidates. Maximal degree in co-relation 53559. Up to 5773 conditions per place. [2024-06-28 03:06:38,518 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 422 selfloop transitions, 57 changer transitions 0/483 dead transitions. [2024-06-28 03:06:38,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 483 transitions, 6677 flow [2024-06-28 03:06:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:06:38,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:06:38,519 INFO L175 Difference]: Start difference. First operand has 327 places, 460 transitions, 5603 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:06:38,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 483 transitions, 6677 flow [2024-06-28 03:06:40,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 483 transitions, 6534 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:40,566 INFO L231 Difference]: Finished difference. Result has 331 places, 462 transitions, 5633 flow [2024-06-28 03:06:40,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5480, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5633, PETRI_PLACES=331, PETRI_TRANSITIONS=462} [2024-06-28 03:06:40,567 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 289 predicate places. [2024-06-28 03:06:40,567 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 462 transitions, 5633 flow [2024-06-28 03:06:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:40,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:40,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:06:40,568 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:40,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1488972993, now seen corresponding path program 3 times [2024-06-28 03:06:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383037524] [2024-06-28 03:06:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:41,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383037524] [2024-06-28 03:06:41,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383037524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:41,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:41,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735197115] [2024-06-28 03:06:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:41,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:41,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:41,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:41,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 462 transitions, 5633 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:41,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:41,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:41,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:43,042 INFO L124 PetriNetUnfolderBase]: 3801/6052 cut-off events. [2024-06-28 03:06:43,042 INFO L125 PetriNetUnfolderBase]: For 734361/734361 co-relation queries the response was YES. [2024-06-28 03:06:43,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53918 conditions, 6052 events. 3801/6052 cut-off events. For 734361/734361 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 36895 event pairs, 775 based on Foata normal form. 2/6051 useless extension candidates. Maximal degree in co-relation 53766. Up to 5785 conditions per place. [2024-06-28 03:06:43,129 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 421 selfloop transitions, 55 changer transitions 0/480 dead transitions. [2024-06-28 03:06:43,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 480 transitions, 6667 flow [2024-06-28 03:06:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:06:43,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-28 03:06:43,130 INFO L175 Difference]: Start difference. First operand has 331 places, 462 transitions, 5633 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:06:43,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 480 transitions, 6667 flow [2024-06-28 03:06:45,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 480 transitions, 6534 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:45,191 INFO L231 Difference]: Finished difference. Result has 333 places, 464 transitions, 5653 flow [2024-06-28 03:06:45,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5500, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5653, PETRI_PLACES=333, PETRI_TRANSITIONS=464} [2024-06-28 03:06:45,191 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-28 03:06:45,191 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 464 transitions, 5653 flow [2024-06-28 03:06:45,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:45,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:45,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:45,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:06:45,192 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:45,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2038788481, now seen corresponding path program 4 times [2024-06-28 03:06:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357332032] [2024-06-28 03:06:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:45,979 INFO 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 03:06:45,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357332032] [2024-06-28 03:06:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357332032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:45,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:45,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72710341] [2024-06-28 03:06:45,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:45,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:45,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:45,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:45,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:46,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:46,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 464 transitions, 5653 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:46,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:46,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:46,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:47,395 INFO L124 PetriNetUnfolderBase]: 3811/6071 cut-off events. [2024-06-28 03:06:47,395 INFO L125 PetriNetUnfolderBase]: For 750048/750054 co-relation queries the response was YES. [2024-06-28 03:06:47,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54241 conditions, 6071 events. 3811/6071 cut-off events. For 750048/750054 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 37064 event pairs, 880 based on Foata normal form. 6/6070 useless extension candidates. Maximal degree in co-relation 54088. Up to 5713 conditions per place. [2024-06-28 03:06:47,479 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 434 selfloop transitions, 50 changer transitions 0/488 dead transitions. [2024-06-28 03:06:47,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 488 transitions, 6807 flow [2024-06-28 03:06:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:06:47,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:06:47,480 INFO L175 Difference]: Start difference. First operand has 333 places, 464 transitions, 5653 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:06:47,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 488 transitions, 6807 flow [2024-06-28 03:06:49,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 488 transitions, 6674 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:49,710 INFO L231 Difference]: Finished difference. Result has 335 places, 467 transitions, 5733 flow [2024-06-28 03:06:49,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5520, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5733, PETRI_PLACES=335, PETRI_TRANSITIONS=467} [2024-06-28 03:06:49,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 293 predicate places. [2024-06-28 03:06:49,711 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 467 transitions, 5733 flow [2024-06-28 03:06:49,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:49,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:49,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:49,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:06:49,711 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:49,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1629592641, now seen corresponding path program 4 times [2024-06-28 03:06:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:49,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756289736] [2024-06-28 03:06:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:49,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:50,460 INFO 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 03:06:50,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:50,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756289736] [2024-06-28 03:06:50,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756289736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:50,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:50,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:50,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082670982] [2024-06-28 03:06:50,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:50,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:50,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:50,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:50,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:50,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:50,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 467 transitions, 5733 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:50,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:50,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:50,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:51,949 INFO L124 PetriNetUnfolderBase]: 3845/6114 cut-off events. [2024-06-28 03:06:51,949 INFO L125 PetriNetUnfolderBase]: For 782511/782517 co-relation queries the response was YES. [2024-06-28 03:06:52,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55550 conditions, 6114 events. 3845/6114 cut-off events. For 782511/782517 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 37283 event pairs, 877 based on Foata normal form. 6/6112 useless extension candidates. Maximal degree in co-relation 55396. Up to 5643 conditions per place. [2024-06-28 03:06:52,024 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 400 selfloop transitions, 102 changer transitions 0/506 dead transitions. [2024-06-28 03:06:52,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 506 transitions, 7522 flow [2024-06-28 03:06:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:06:52,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:06:52,025 INFO L175 Difference]: Start difference. First operand has 335 places, 467 transitions, 5733 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:06:52,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 506 transitions, 7522 flow [2024-06-28 03:06:54,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 506 transitions, 7339 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:54,603 INFO L231 Difference]: Finished difference. Result has 338 places, 482 transitions, 6136 flow [2024-06-28 03:06:54,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5550, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6136, PETRI_PLACES=338, PETRI_TRANSITIONS=482} [2024-06-28 03:06:54,604 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-28 03:06:54,604 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 482 transitions, 6136 flow [2024-06-28 03:06:54,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:06:54,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:54,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:54,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:06:54,604 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:54,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1629592827, now seen corresponding path program 5 times [2024-06-28 03:06:54,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:54,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428710692] [2024-06-28 03:06:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:55,400 INFO 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 03:06:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428710692] [2024-06-28 03:06:55,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428710692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:55,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:55,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:55,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590809826] [2024-06-28 03:06:55,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:55,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:55,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:55,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:55,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:06:55,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 482 transitions, 6136 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:06:55,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:55,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:06:55,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:56,770 INFO L124 PetriNetUnfolderBase]: 3879/6168 cut-off events. [2024-06-28 03:06:56,770 INFO L125 PetriNetUnfolderBase]: For 818663/818669 co-relation queries the response was YES. [2024-06-28 03:06:56,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57325 conditions, 6168 events. 3879/6168 cut-off events. For 818663/818669 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 37672 event pairs, 882 based on Foata normal form. 6/6166 useless extension candidates. Maximal degree in co-relation 57169. Up to 5618 conditions per place. [2024-06-28 03:06:56,852 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 406 selfloop transitions, 104 changer transitions 0/514 dead transitions. [2024-06-28 03:06:56,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 514 transitions, 8154 flow [2024-06-28 03:06:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:06:56,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:06:56,853 INFO L175 Difference]: Start difference. First operand has 338 places, 482 transitions, 6136 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:06:56,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 514 transitions, 8154 flow [2024-06-28 03:06:59,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 514 transitions, 7982 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:59,401 INFO L231 Difference]: Finished difference. Result has 343 places, 491 transitions, 6508 flow [2024-06-28 03:06:59,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5964, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6508, PETRI_PLACES=343, PETRI_TRANSITIONS=491} [2024-06-28 03:06:59,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-06-28 03:06:59,401 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 491 transitions, 6508 flow [2024-06-28 03:06:59,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:06:59,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:59,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:59,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:06:59,402 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:59,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1401811647, now seen corresponding path program 6 times [2024-06-28 03:06:59,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:59,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789881244] [2024-06-28 03:06:59,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:59,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:00,169 INFO 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 03:07:00,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:00,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789881244] [2024-06-28 03:07:00,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789881244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:00,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:00,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155191039] [2024-06-28 03:07:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:00,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:00,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:00,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 491 transitions, 6508 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:00,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:00,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:00,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:01,699 INFO L124 PetriNetUnfolderBase]: 3889/6179 cut-off events. [2024-06-28 03:07:01,699 INFO L125 PetriNetUnfolderBase]: For 839830/839836 co-relation queries the response was YES. [2024-06-28 03:07:01,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58136 conditions, 6179 events. 3889/6179 cut-off events. For 839830/839836 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 37711 event pairs, 874 based on Foata normal form. 6/6177 useless extension candidates. Maximal degree in co-relation 57978. Up to 5793 conditions per place. [2024-06-28 03:07:01,785 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 452 selfloop transitions, 65 changer transitions 0/521 dead transitions. [2024-06-28 03:07:01,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 521 transitions, 7970 flow [2024-06-28 03:07:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:07:01,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:07:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 03:07:01,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170731707317073 [2024-06-28 03:07:01,787 INFO L175 Difference]: Start difference. First operand has 343 places, 491 transitions, 6508 flow. Second operand 10 states and 171 transitions. [2024-06-28 03:07:01,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 521 transitions, 7970 flow [2024-06-28 03:07:04,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 521 transitions, 7644 flow, removed 122 selfloop flow, removed 3 redundant places. [2024-06-28 03:07:04,264 INFO L231 Difference]: Finished difference. Result has 351 places, 494 transitions, 6443 flow [2024-06-28 03:07:04,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6214, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6443, PETRI_PLACES=351, PETRI_TRANSITIONS=494} [2024-06-28 03:07:04,265 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2024-06-28 03:07:04,265 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 494 transitions, 6443 flow [2024-06-28 03:07:04,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:04,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:04,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:07:04,265 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:04,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash -287804227, now seen corresponding path program 7 times [2024-06-28 03:07:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196201186] [2024-06-28 03:07:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:05,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:05,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196201186] [2024-06-28 03:07:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196201186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670355151] [2024-06-28 03:07:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:05,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:05,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 494 transitions, 6443 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:05,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:05,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:05,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:06,539 INFO L124 PetriNetUnfolderBase]: 3883/6169 cut-off events. [2024-06-28 03:07:06,539 INFO L125 PetriNetUnfolderBase]: For 842821/842827 co-relation queries the response was YES. [2024-06-28 03:07:06,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57831 conditions, 6169 events. 3883/6169 cut-off events. For 842821/842827 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 37634 event pairs, 873 based on Foata normal form. 6/6167 useless extension candidates. Maximal degree in co-relation 57670. Up to 5788 conditions per place. [2024-06-28 03:07:06,623 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 444 selfloop transitions, 66 changer transitions 0/514 dead transitions. [2024-06-28 03:07:06,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 514 transitions, 7557 flow [2024-06-28 03:07:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:07:06,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-28 03:07:06,624 INFO L175 Difference]: Start difference. First operand has 351 places, 494 transitions, 6443 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:07:06,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 514 transitions, 7557 flow [2024-06-28 03:07:08,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 514 transitions, 7345 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 03:07:08,897 INFO L231 Difference]: Finished difference. Result has 352 places, 494 transitions, 6369 flow [2024-06-28 03:07:08,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6231, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6369, PETRI_PLACES=352, PETRI_TRANSITIONS=494} [2024-06-28 03:07:08,897 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 03:07:08,897 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 494 transitions, 6369 flow [2024-06-28 03:07:08,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:08,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:08,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:08,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:07:08,898 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:08,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1275092637, now seen corresponding path program 8 times [2024-06-28 03:07:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003238539] [2024-06-28 03:07:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:09,639 INFO 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 03:07:09,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:09,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003238539] [2024-06-28 03:07:09,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003238539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:09,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:09,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:09,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506728417] [2024-06-28 03:07:09,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:09,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:09,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:09,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:09,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:09,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 494 transitions, 6369 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:09,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:09,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:09,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:11,190 INFO L124 PetriNetUnfolderBase]: 3909/6214 cut-off events. [2024-06-28 03:07:11,190 INFO L125 PetriNetUnfolderBase]: For 868617/868623 co-relation queries the response was YES. [2024-06-28 03:07:11,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58505 conditions, 6214 events. 3909/6214 cut-off events. For 868617/868623 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 38031 event pairs, 881 based on Foata normal form. 6/6212 useless extension candidates. Maximal degree in co-relation 58343. Up to 5648 conditions per place. [2024-06-28 03:07:11,266 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 393 selfloop transitions, 122 changer transitions 0/519 dead transitions. [2024-06-28 03:07:11,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 519 transitions, 8063 flow [2024-06-28 03:07:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:07:11,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:07:11,267 INFO L175 Difference]: Start difference. First operand has 352 places, 494 transitions, 6369 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:07:11,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 519 transitions, 8063 flow [2024-06-28 03:07:13,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 519 transitions, 7931 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:07:13,744 INFO L231 Difference]: Finished difference. Result has 352 places, 500 transitions, 6663 flow [2024-06-28 03:07:13,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6237, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6663, PETRI_PLACES=352, PETRI_TRANSITIONS=500} [2024-06-28 03:07:13,745 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 03:07:13,745 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 500 transitions, 6663 flow [2024-06-28 03:07:13,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:13,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:13,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:13,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:07:13,745 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:13,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:13,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1684520791, now seen corresponding path program 9 times [2024-06-28 03:07:13,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:13,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135357999] [2024-06-28 03:07:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:13,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:14,507 INFO 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 03:07:14,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:14,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135357999] [2024-06-28 03:07:14,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135357999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:14,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:14,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:14,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011889005] [2024-06-28 03:07:14,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:14,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:14,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:14,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:14,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 500 transitions, 6663 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:14,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:14,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:14,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:15,969 INFO L124 PetriNetUnfolderBase]: 3903/6206 cut-off events. [2024-06-28 03:07:15,969 INFO L125 PetriNetUnfolderBase]: For 876330/876336 co-relation queries the response was YES. [2024-06-28 03:07:16,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58556 conditions, 6206 events. 3903/6206 cut-off events. For 876330/876336 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 37953 event pairs, 881 based on Foata normal form. 6/6204 useless extension candidates. Maximal degree in co-relation 58393. Up to 5643 conditions per place. [2024-06-28 03:07:16,061 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 395 selfloop transitions, 119 changer transitions 0/518 dead transitions. [2024-06-28 03:07:16,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 518 transitions, 7989 flow [2024-06-28 03:07:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:07:16,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 03:07:16,062 INFO L175 Difference]: Start difference. First operand has 352 places, 500 transitions, 6663 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:07:16,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 518 transitions, 7989 flow [2024-06-28 03:07:18,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 518 transitions, 7678 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:18,476 INFO L231 Difference]: Finished difference. Result has 355 places, 500 transitions, 6596 flow [2024-06-28 03:07:18,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6352, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6596, PETRI_PLACES=355, PETRI_TRANSITIONS=500} [2024-06-28 03:07:18,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-06-28 03:07:18,476 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 500 transitions, 6596 flow [2024-06-28 03:07:18,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:18,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:18,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:18,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:07:18,477 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:18,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash -847826913, now seen corresponding path program 5 times [2024-06-28 03:07:18,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:18,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906956628] [2024-06-28 03:07:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:18,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:19,268 INFO 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 03:07:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906956628] [2024-06-28 03:07:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906956628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:19,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:19,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782089238] [2024-06-28 03:07:19,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:19,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:19,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:19,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:19,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 500 transitions, 6596 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:07:19,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:19,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:19,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:20,734 INFO L124 PetriNetUnfolderBase]: 3929/6243 cut-off events. [2024-06-28 03:07:20,735 INFO L125 PetriNetUnfolderBase]: For 901105/901111 co-relation queries the response was YES. [2024-06-28 03:07:20,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58983 conditions, 6243 events. 3929/6243 cut-off events. For 901105/901111 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 38223 event pairs, 874 based on Foata normal form. 6/6241 useless extension candidates. Maximal degree in co-relation 58820. Up to 5749 conditions per place. [2024-06-28 03:07:20,834 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 408 selfloop transitions, 116 changer transitions 0/528 dead transitions. [2024-06-28 03:07:20,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 528 transitions, 8269 flow [2024-06-28 03:07:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:07:20,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:07:20,836 INFO L175 Difference]: Start difference. First operand has 355 places, 500 transitions, 6596 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:07:20,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 528 transitions, 8269 flow [2024-06-28 03:07:23,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 528 transitions, 8078 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:23,407 INFO L231 Difference]: Finished difference. Result has 357 places, 507 transitions, 6762 flow [2024-06-28 03:07:23,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6405, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6762, PETRI_PLACES=357, PETRI_TRANSITIONS=507} [2024-06-28 03:07:23,408 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 315 predicate places. [2024-06-28 03:07:23,408 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 507 transitions, 6762 flow [2024-06-28 03:07:23,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:07:23,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:23,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:23,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:07:23,408 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:23,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:23,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1684520605, now seen corresponding path program 6 times [2024-06-28 03:07:23,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:23,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906163986] [2024-06-28 03:07:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:23,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:24,202 INFO 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 03:07:24,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906163986] [2024-06-28 03:07:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906163986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:24,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:24,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873487065] [2024-06-28 03:07:24,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:24,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:24,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:24,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:24,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:24,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 507 transitions, 6762 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:24,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:24,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:24,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:25,599 INFO L124 PetriNetUnfolderBase]: 3923/6237 cut-off events. [2024-06-28 03:07:25,599 INFO L125 PetriNetUnfolderBase]: For 909320/909326 co-relation queries the response was YES. [2024-06-28 03:07:25,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58937 conditions, 6237 events. 3923/6237 cut-off events. For 909320/909326 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 38222 event pairs, 879 based on Foata normal form. 6/6235 useless extension candidates. Maximal degree in co-relation 58773. Up to 5744 conditions per place. [2024-06-28 03:07:25,695 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 410 selfloop transitions, 114 changer transitions 0/528 dead transitions. [2024-06-28 03:07:25,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 528 transitions, 8320 flow [2024-06-28 03:07:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:07:25,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:07:25,697 INFO L175 Difference]: Start difference. First operand has 357 places, 507 transitions, 6762 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:07:25,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 528 transitions, 8320 flow [2024-06-28 03:07:28,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 528 transitions, 8122 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:28,481 INFO L231 Difference]: Finished difference. Result has 362 places, 507 transitions, 6798 flow [2024-06-28 03:07:28,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6564, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6798, PETRI_PLACES=362, PETRI_TRANSITIONS=507} [2024-06-28 03:07:28,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 320 predicate places. [2024-06-28 03:07:28,482 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 507 transitions, 6798 flow [2024-06-28 03:07:28,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:28,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:28,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:28,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:07:28,483 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:28,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash 883091853, now seen corresponding path program 7 times [2024-06-28 03:07:28,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:28,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138510850] [2024-06-28 03:07:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:29,323 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 03:07:29,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138510850] [2024-06-28 03:07:29,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138510850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:29,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:29,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927526206] [2024-06-28 03:07:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:29,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:29,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:29,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:29,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 507 transitions, 6798 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:07:29,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:29,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:29,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:30,927 INFO L124 PetriNetUnfolderBase]: 3949/6274 cut-off events. [2024-06-28 03:07:30,927 INFO L125 PetriNetUnfolderBase]: For 936803/936809 co-relation queries the response was YES. [2024-06-28 03:07:30,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59596 conditions, 6274 events. 3949/6274 cut-off events. For 936803/936809 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 38404 event pairs, 894 based on Foata normal form. 6/6272 useless extension candidates. Maximal degree in co-relation 59431. Up to 6011 conditions per place. [2024-06-28 03:07:31,010 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 467 selfloop transitions, 56 changer transitions 0/527 dead transitions. [2024-06-28 03:07:31,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 527 transitions, 8251 flow [2024-06-28 03:07:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:07:31,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 03:07:31,011 INFO L175 Difference]: Start difference. First operand has 362 places, 507 transitions, 6798 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:07:31,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 527 transitions, 8251 flow [2024-06-28 03:07:33,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 527 transitions, 8015 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:33,830 INFO L231 Difference]: Finished difference. Result has 365 places, 514 transitions, 6858 flow [2024-06-28 03:07:33,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6576, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6858, PETRI_PLACES=365, PETRI_TRANSITIONS=514} [2024-06-28 03:07:33,831 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-06-28 03:07:33,831 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 514 transitions, 6858 flow [2024-06-28 03:07:33,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:07:33,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:33,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:07:33,832 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:33,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1257748511, now seen corresponding path program 8 times [2024-06-28 03:07:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:33,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390708436] [2024-06-28 03:07:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:33,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:34,552 INFO 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 03:07:34,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:34,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390708436] [2024-06-28 03:07:34,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390708436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:34,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:34,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:34,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756138584] [2024-06-28 03:07:34,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:34,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:34,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:34,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:34,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:34,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:34,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 514 transitions, 6858 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:07:34,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:34,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:34,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:36,065 INFO L124 PetriNetUnfolderBase]: 3959/6294 cut-off events. [2024-06-28 03:07:36,065 INFO L125 PetriNetUnfolderBase]: For 952673/952679 co-relation queries the response was YES. [2024-06-28 03:07:36,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59739 conditions, 6294 events. 3959/6294 cut-off events. For 952673/952679 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 38554 event pairs, 890 based on Foata normal form. 6/6292 useless extension candidates. Maximal degree in co-relation 59572. Up to 6051 conditions per place. [2024-06-28 03:07:36,161 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 479 selfloop transitions, 46 changer transitions 0/529 dead transitions. [2024-06-28 03:07:36,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 529 transitions, 8038 flow [2024-06-28 03:07:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:07:36,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 03:07:36,162 INFO L175 Difference]: Start difference. First operand has 365 places, 514 transitions, 6858 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:07:36,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 529 transitions, 8038 flow [2024-06-28 03:07:38,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 529 transitions, 7886 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:38,992 INFO L231 Difference]: Finished difference. Result has 368 places, 518 transitions, 6896 flow [2024-06-28 03:07:38,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6722, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6896, PETRI_PLACES=368, PETRI_TRANSITIONS=518} [2024-06-28 03:07:38,992 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-28 03:07:38,993 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 518 transitions, 6896 flow [2024-06-28 03:07:38,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:07:38,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:38,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:38,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:07:38,993 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:38,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1109274757, now seen corresponding path program 9 times [2024-06-28 03:07:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:38,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902524378] [2024-06-28 03:07:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:38,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:39,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:39,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902524378] [2024-06-28 03:07:39,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902524378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:39,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:39,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648235317] [2024-06-28 03:07:39,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:39,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:39,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:39,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:39,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:39,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 518 transitions, 6896 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:39,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:39,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:39,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:41,250 INFO L124 PetriNetUnfolderBase]: 3969/6308 cut-off events. [2024-06-28 03:07:41,250 INFO L125 PetriNetUnfolderBase]: For 969456/969462 co-relation queries the response was YES. [2024-06-28 03:07:41,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59905 conditions, 6308 events. 3969/6308 cut-off events. For 969456/969462 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 38669 event pairs, 878 based on Foata normal form. 6/6306 useless extension candidates. Maximal degree in co-relation 59738. Up to 5951 conditions per place. [2024-06-28 03:07:41,343 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 441 selfloop transitions, 91 changer transitions 0/536 dead transitions. [2024-06-28 03:07:41,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 536 transitions, 8507 flow [2024-06-28 03:07:41,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:07:41,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-28 03:07:41,344 INFO L175 Difference]: Start difference. First operand has 368 places, 518 transitions, 6896 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:07:41,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 536 transitions, 8507 flow [2024-06-28 03:07:44,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 536 transitions, 8395 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:44,778 INFO L231 Difference]: Finished difference. Result has 372 places, 521 transitions, 7035 flow [2024-06-28 03:07:44,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6784, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7035, PETRI_PLACES=372, PETRI_TRANSITIONS=521} [2024-06-28 03:07:44,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-28 03:07:44,778 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 521 transitions, 7035 flow [2024-06-28 03:07:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:44,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:44,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:44,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:07:44,778 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:44,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1035382535, now seen corresponding path program 10 times [2024-06-28 03:07:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:44,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267690302] [2024-06-28 03:07:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:45,494 INFO 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 03:07:45,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:45,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267690302] [2024-06-28 03:07:45,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267690302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:45,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:45,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:45,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145748279] [2024-06-28 03:07:45,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:45,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:45,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:45,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:45,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:45,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:45,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 521 transitions, 7035 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:45,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:45,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:45,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:46,959 INFO L124 PetriNetUnfolderBase]: 3979/6326 cut-off events. [2024-06-28 03:07:46,959 INFO L125 PetriNetUnfolderBase]: For 988157/988163 co-relation queries the response was YES. [2024-06-28 03:07:47,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60377 conditions, 6326 events. 3979/6326 cut-off events. For 988157/988163 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 38873 event pairs, 878 based on Foata normal form. 6/6324 useless extension candidates. Maximal degree in co-relation 60209. Up to 6022 conditions per place. [2024-06-28 03:07:47,055 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 474 selfloop transitions, 60 changer transitions 0/538 dead transitions. [2024-06-28 03:07:47,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 538 transitions, 8473 flow [2024-06-28 03:07:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:07:47,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-28 03:07:47,056 INFO L175 Difference]: Start difference. First operand has 372 places, 521 transitions, 7035 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:07:47,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 538 transitions, 8473 flow [2024-06-28 03:07:49,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 538 transitions, 8153 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 03:07:49,875 INFO L231 Difference]: Finished difference. Result has 372 places, 524 transitions, 6929 flow [2024-06-28 03:07:49,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6715, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6929, PETRI_PLACES=372, PETRI_TRANSITIONS=524} [2024-06-28 03:07:49,876 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-28 03:07:49,876 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 524 transitions, 6929 flow [2024-06-28 03:07:49,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:49,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:49,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:49,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:07:49,876 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:49,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1035145385, now seen corresponding path program 11 times [2024-06-28 03:07:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420285222] [2024-06-28 03:07:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:49,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:50,596 INFO 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 03:07:50,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420285222] [2024-06-28 03:07:50,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420285222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:50,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:50,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:50,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021228007] [2024-06-28 03:07:50,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:50,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:50,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:50,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:50,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:50,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 524 transitions, 6929 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:50,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:50,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:50,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:52,108 INFO L124 PetriNetUnfolderBase]: 3973/6324 cut-off events. [2024-06-28 03:07:52,108 INFO L125 PetriNetUnfolderBase]: For 992805/992811 co-relation queries the response was YES. [2024-06-28 03:07:52,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60006 conditions, 6324 events. 3973/6324 cut-off events. For 992805/992811 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 38891 event pairs, 883 based on Foata normal form. 6/6322 useless extension candidates. Maximal degree in co-relation 59838. Up to 6017 conditions per place. [2024-06-28 03:07:52,204 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 478 selfloop transitions, 56 changer transitions 0/538 dead transitions. [2024-06-28 03:07:52,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 538 transitions, 8281 flow [2024-06-28 03:07:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:07:52,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40853658536585363 [2024-06-28 03:07:52,205 INFO L175 Difference]: Start difference. First operand has 372 places, 524 transitions, 6929 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:07:52,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 538 transitions, 8281 flow [2024-06-28 03:07:55,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 538 transitions, 7871 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-28 03:07:55,368 INFO L231 Difference]: Finished difference. Result has 372 places, 524 transitions, 6637 flow [2024-06-28 03:07:55,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6519, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6637, PETRI_PLACES=372, PETRI_TRANSITIONS=524} [2024-06-28 03:07:55,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-28 03:07:55,369 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 524 transitions, 6637 flow [2024-06-28 03:07:55,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:55,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:55,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:55,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:07:55,369 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:55,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1035145571, now seen corresponding path program 10 times [2024-06-28 03:07:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:55,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669072655] [2024-06-28 03:07:55,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:55,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:56,132 INFO 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 03:07:56,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669072655] [2024-06-28 03:07:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669072655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:56,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:56,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331519157] [2024-06-28 03:07:56,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:56,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:56,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:07:56,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 524 transitions, 6637 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:07:56,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:56,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:07:56,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:57,673 INFO L124 PetriNetUnfolderBase]: 3967/6312 cut-off events. [2024-06-28 03:07:57,673 INFO L125 PetriNetUnfolderBase]: For 989875/989881 co-relation queries the response was YES. [2024-06-28 03:07:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59143 conditions, 6312 events. 3967/6312 cut-off events. For 989875/989881 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 38717 event pairs, 884 based on Foata normal form. 6/6310 useless extension candidates. Maximal degree in co-relation 58975. Up to 5952 conditions per place. [2024-06-28 03:07:57,752 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 446 selfloop transitions, 88 changer transitions 0/538 dead transitions. [2024-06-28 03:07:57,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 538 transitions, 7991 flow [2024-06-28 03:07:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:07:57,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-28 03:07:57,753 INFO L175 Difference]: Start difference. First operand has 372 places, 524 transitions, 6637 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:07:57,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 538 transitions, 7991 flow [2024-06-28 03:08:01,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 538 transitions, 7838 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:08:01,354 INFO L231 Difference]: Finished difference. Result has 375 places, 524 transitions, 6666 flow [2024-06-28 03:08:01,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6484, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6666, PETRI_PLACES=375, PETRI_TRANSITIONS=524} [2024-06-28 03:08:01,355 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-28 03:08:01,355 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 524 transitions, 6666 flow [2024-06-28 03:08:01,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:01,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:01,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:01,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:08:01,355 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:01,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:01,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1010968917, now seen corresponding path program 4 times [2024-06-28 03:08:01,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:01,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843094499] [2024-06-28 03:08:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:01,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:02,296 INFO 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 03:08:02,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:02,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843094499] [2024-06-28 03:08:02,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843094499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:02,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:02,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:08:02,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980977301] [2024-06-28 03:08:02,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:02,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:08:02,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:08:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:08:02,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:08:02,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 524 transitions, 6666 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:02,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:02,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:08:02,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:03,890 INFO L124 PetriNetUnfolderBase]: 3964/6297 cut-off events. [2024-06-28 03:08:03,890 INFO L125 PetriNetUnfolderBase]: For 995921/995921 co-relation queries the response was YES. [2024-06-28 03:08:03,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59216 conditions, 6297 events. 3964/6297 cut-off events. For 995921/995921 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 38509 event pairs, 791 based on Foata normal form. 1/6284 useless extension candidates. Maximal degree in co-relation 59047. Up to 6016 conditions per place. [2024-06-28 03:08:04,197 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 477 selfloop transitions, 53 changer transitions 0/534 dead transitions. [2024-06-28 03:08:04,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 534 transitions, 7754 flow [2024-06-28 03:08:04,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:08:04,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 03:08:04,200 INFO L175 Difference]: Start difference. First operand has 375 places, 524 transitions, 6666 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:08:04,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 534 transitions, 7754 flow [2024-06-28 03:08:07,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 534 transitions, 7568 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:07,463 INFO L231 Difference]: Finished difference. Result has 376 places, 524 transitions, 6592 flow [2024-06-28 03:08:07,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6480, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6592, PETRI_PLACES=376, PETRI_TRANSITIONS=524} [2024-06-28 03:08:07,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 334 predicate places. [2024-06-28 03:08:07,463 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 524 transitions, 6592 flow [2024-06-28 03:08:07,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:07,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:07,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:07,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:08:07,464 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:07,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash 903801607, now seen corresponding path program 12 times [2024-06-28 03:08:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747397688] [2024-06-28 03:08:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:08,243 INFO 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 03:08:08,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:08,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747397688] [2024-06-28 03:08:08,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747397688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:08,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:08,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:08,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896313597] [2024-06-28 03:08:08,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:08,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:08,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:08,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:08,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:08:08,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 524 transitions, 6592 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:08:08,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:08,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:08:08,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:09,695 INFO L124 PetriNetUnfolderBase]: 3958/6296 cut-off events. [2024-06-28 03:08:09,695 INFO L125 PetriNetUnfolderBase]: For 1007060/1007066 co-relation queries the response was YES. [2024-06-28 03:08:09,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58967 conditions, 6296 events. 3958/6296 cut-off events. For 1007060/1007066 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 38601 event pairs, 889 based on Foata normal form. 6/6294 useless extension candidates. Maximal degree in co-relation 58797. Up to 6060 conditions per place. [2024-06-28 03:08:09,787 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 497 selfloop transitions, 35 changer transitions 0/536 dead transitions. [2024-06-28 03:08:09,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 536 transitions, 7716 flow [2024-06-28 03:08:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:08:09,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 03:08:09,788 INFO L175 Difference]: Start difference. First operand has 376 places, 524 transitions, 6592 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:08:09,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 536 transitions, 7716 flow [2024-06-28 03:08:13,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 536 transitions, 7467 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 03:08:13,674 INFO L231 Difference]: Finished difference. Result has 375 places, 524 transitions, 6419 flow [2024-06-28 03:08:13,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6343, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6419, PETRI_PLACES=375, PETRI_TRANSITIONS=524} [2024-06-28 03:08:13,674 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-28 03:08:13,674 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 524 transitions, 6419 flow [2024-06-28 03:08:13,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:08:13,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:13,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:13,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:08:13,675 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:13,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:13,676 INFO L85 PathProgramCache]: Analyzing trace with hash 858014051, now seen corresponding path program 11 times [2024-06-28 03:08:13,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:13,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900578445] [2024-06-28 03:08:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:13,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:14,365 INFO 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 03:08:14,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900578445] [2024-06-28 03:08:14,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900578445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:14,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:14,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:08:14,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119103440] [2024-06-28 03:08:14,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:14,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:08:14,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:08:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:08:14,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:08:14,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 524 transitions, 6419 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:14,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:14,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:08:14,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:15,965 INFO L124 PetriNetUnfolderBase]: 3952/6288 cut-off events. [2024-06-28 03:08:15,965 INFO L125 PetriNetUnfolderBase]: For 1012916/1012922 co-relation queries the response was YES. [2024-06-28 03:08:16,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58613 conditions, 6288 events. 3952/6288 cut-off events. For 1012916/1012922 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 38629 event pairs, 888 based on Foata normal form. 6/6286 useless extension candidates. Maximal degree in co-relation 58443. Up to 6020 conditions per place. [2024-06-28 03:08:16,047 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 482 selfloop transitions, 51 changer transitions 0/537 dead transitions. [2024-06-28 03:08:16,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 537 transitions, 7761 flow [2024-06-28 03:08:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:08:16,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-28 03:08:16,048 INFO L175 Difference]: Start difference. First operand has 375 places, 524 transitions, 6419 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:08:16,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 537 transitions, 7761 flow [2024-06-28 03:08:19,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 537 transitions, 7590 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:08:19,770 INFO L231 Difference]: Finished difference. Result has 374 places, 524 transitions, 6356 flow [2024-06-28 03:08:19,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6248, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6356, PETRI_PLACES=374, PETRI_TRANSITIONS=524} [2024-06-28 03:08:19,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-06-28 03:08:19,771 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 524 transitions, 6356 flow [2024-06-28 03:08:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:19,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:19,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:19,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:08:19,771 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:19,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:19,771 INFO L85 PathProgramCache]: Analyzing trace with hash 858251201, now seen corresponding path program 12 times [2024-06-28 03:08:19,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:19,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051876132] [2024-06-28 03:08:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:19,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:20,489 INFO 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 03:08:20,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:20,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051876132] [2024-06-28 03:08:20,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051876132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:20,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:20,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:20,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075177726] [2024-06-28 03:08:20,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:20,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:20,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:20,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:08:20,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 524 transitions, 6356 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:08:20,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:20,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:08:20,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:21,994 INFO L124 PetriNetUnfolderBase]: 3946/6276 cut-off events. [2024-06-28 03:08:21,994 INFO L125 PetriNetUnfolderBase]: For 1017647/1017653 co-relation queries the response was YES. [2024-06-28 03:08:22,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58455 conditions, 6276 events. 3946/6276 cut-off events. For 1017647/1017653 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 38490 event pairs, 889 based on Foata normal form. 6/6274 useless extension candidates. Maximal degree in co-relation 58284. Up to 6035 conditions per place. [2024-06-28 03:08:22,086 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 488 selfloop transitions, 43 changer transitions 0/535 dead transitions. [2024-06-28 03:08:22,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 535 transitions, 7462 flow [2024-06-28 03:08:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:08:22,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 03:08:22,087 INFO L175 Difference]: Start difference. First operand has 374 places, 524 transitions, 6356 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:08:22,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 535 transitions, 7462 flow [2024-06-28 03:08:25,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 535 transitions, 7330 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:08:25,600 INFO L231 Difference]: Finished difference. Result has 377 places, 524 transitions, 6316 flow [2024-06-28 03:08:25,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6224, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6316, PETRI_PLACES=377, PETRI_TRANSITIONS=524} [2024-06-28 03:08:25,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-28 03:08:25,601 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 524 transitions, 6316 flow [2024-06-28 03:08:25,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 03:08:25,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:25,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:25,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:08:25,601 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:25,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash 857890733, now seen corresponding path program 4 times [2024-06-28 03:08:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135905167] [2024-06-28 03:08:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:26,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:26,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135905167] [2024-06-28 03:08:26,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135905167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:26,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:26,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:08:26,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179032149] [2024-06-28 03:08:26,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:26,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:08:26,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:26,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:08:26,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:08:26,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:08:26,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 524 transitions, 6316 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:26,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:26,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:08:26,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:28,290 INFO L124 PetriNetUnfolderBase]: 3941/6266 cut-off events. [2024-06-28 03:08:28,290 INFO L125 PetriNetUnfolderBase]: For 1022456/1022456 co-relation queries the response was YES. [2024-06-28 03:08:28,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58282 conditions, 6266 events. 3941/6266 cut-off events. For 1022456/1022456 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 38369 event pairs, 787 based on Foata normal form. 2/6254 useless extension candidates. Maximal degree in co-relation 58110. Up to 5982 conditions per place. [2024-06-28 03:08:28,381 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 479 selfloop transitions, 52 changer transitions 0/535 dead transitions. [2024-06-28 03:08:28,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 535 transitions, 7408 flow [2024-06-28 03:08:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:08:28,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 03:08:28,382 INFO L175 Difference]: Start difference. First operand has 377 places, 524 transitions, 6316 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:08:28,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 535 transitions, 7408 flow [2024-06-28 03:08:31,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 535 transitions, 7265 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:08:31,831 INFO L231 Difference]: Finished difference. Result has 377 places, 524 transitions, 6282 flow [2024-06-28 03:08:31,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6173, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6282, PETRI_PLACES=377, PETRI_TRANSITIONS=524} [2024-06-28 03:08:31,831 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-28 03:08:31,831 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 524 transitions, 6282 flow [2024-06-28 03:08:31,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:31,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:31,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:31,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:08:31,832 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:31,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash 131603165, now seen corresponding path program 13 times [2024-06-28 03:08:31,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:31,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031751225] [2024-06-28 03:08:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:31,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:32,573 INFO 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 03:08:32,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:32,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031751225] [2024-06-28 03:08:32,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031751225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:32,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:32,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:08:32,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210963110] [2024-06-28 03:08:32,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:32,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:08:32,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:08:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:08:32,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:08:32,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 524 transitions, 6282 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:32,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:32,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:08:32,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:34,237 INFO L124 PetriNetUnfolderBase]: 3970/6310 cut-off events. [2024-06-28 03:08:34,238 INFO L125 PetriNetUnfolderBase]: For 1027434/1027436 co-relation queries the response was YES. [2024-06-28 03:08:34,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58452 conditions, 6310 events. 3970/6310 cut-off events. For 1027434/1027436 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 38676 event pairs, 887 based on Foata normal form. 4/6311 useless extension candidates. Maximal degree in co-relation 58279. Up to 5974 conditions per place. [2024-06-28 03:08:34,322 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 481 selfloop transitions, 78 changer transitions 0/563 dead transitions. [2024-06-28 03:08:34,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 563 transitions, 7684 flow [2024-06-28 03:08:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:08:34,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:08:34,323 INFO L175 Difference]: Start difference. First operand has 377 places, 524 transitions, 6282 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:08:34,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 563 transitions, 7684 flow [2024-06-28 03:08:38,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 563 transitions, 7523 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:38,158 INFO L231 Difference]: Finished difference. Result has 380 places, 537 transitions, 6499 flow [2024-06-28 03:08:38,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6125, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6499, PETRI_PLACES=380, PETRI_TRANSITIONS=537} [2024-06-28 03:08:38,158 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-28 03:08:38,158 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 537 transitions, 6499 flow [2024-06-28 03:08:38,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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 03:08:38,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:38,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:08:38,159 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:38,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:38,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1393231839, now seen corresponding path program 1 times [2024-06-28 03:08:38,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:38,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777492846] [2024-06-28 03:08:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:38,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:39,262 INFO 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 03:08:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777492846] [2024-06-28 03:08:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777492846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:39,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:39,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:08:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261661486] [2024-06-28 03:08:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:39,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:08:39,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:08:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:08:39,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:39,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 537 transitions, 6499 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:39,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:39,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:39,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:41,122 INFO L124 PetriNetUnfolderBase]: 3855/6202 cut-off events. [2024-06-28 03:08:41,122 INFO L125 PetriNetUnfolderBase]: For 1059324/1059324 co-relation queries the response was YES. [2024-06-28 03:08:41,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58383 conditions, 6202 events. 3855/6202 cut-off events. For 1059324/1059324 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 38686 event pairs, 945 based on Foata normal form. 2/6201 useless extension candidates. Maximal degree in co-relation 58208. Up to 5787 conditions per place. [2024-06-28 03:08:41,201 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 504 selfloop transitions, 29 changer transitions 0/568 dead transitions. [2024-06-28 03:08:41,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 568 transitions, 8001 flow [2024-06-28 03:08:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:08:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:08:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 03:08:41,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:08:41,202 INFO L175 Difference]: Start difference. First operand has 380 places, 537 transitions, 6499 flow. Second operand 10 states and 175 transitions. [2024-06-28 03:08:41,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 568 transitions, 8001 flow [2024-06-28 03:08:45,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 568 transitions, 7919 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 03:08:45,081 INFO L231 Difference]: Finished difference. Result has 386 places, 541 transitions, 6612 flow [2024-06-28 03:08:45,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6417, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6612, PETRI_PLACES=386, PETRI_TRANSITIONS=541} [2024-06-28 03:08:45,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-06-28 03:08:45,082 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 541 transitions, 6612 flow [2024-06-28 03:08:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:45,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:45,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:45,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:08:45,083 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:45,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:45,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1700706535, now seen corresponding path program 1 times [2024-06-28 03:08:45,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:45,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360249592] [2024-06-28 03:08:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:45,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:46,100 INFO 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 03:08:46,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:46,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360249592] [2024-06-28 03:08:46,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360249592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:46,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:46,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105583048] [2024-06-28 03:08:46,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:46,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:46,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:46,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:46,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 541 transitions, 6612 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 03:08:46,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:46,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:46,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:47,821 INFO L124 PetriNetUnfolderBase]: 3865/6218 cut-off events. [2024-06-28 03:08:47,821 INFO L125 PetriNetUnfolderBase]: For 1084996/1084996 co-relation queries the response was YES. [2024-06-28 03:08:47,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58741 conditions, 6218 events. 3865/6218 cut-off events. For 1084996/1084996 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 38818 event pairs, 979 based on Foata normal form. 3/6218 useless extension candidates. Maximal degree in co-relation 58565. Up to 5820 conditions per place. [2024-06-28 03:08:47,916 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 503 selfloop transitions, 30 changer transitions 0/568 dead transitions. [2024-06-28 03:08:47,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 568 transitions, 7826 flow [2024-06-28 03:08:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:08:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:08:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 03:08:47,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41019955654101997 [2024-06-28 03:08:47,917 INFO L175 Difference]: Start difference. First operand has 386 places, 541 transitions, 6612 flow. Second operand 11 states and 185 transitions. [2024-06-28 03:08:47,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 568 transitions, 7826 flow [2024-06-28 03:08:52,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 568 transitions, 7711 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 03:08:52,223 INFO L231 Difference]: Finished difference. Result has 391 places, 544 transitions, 6641 flow [2024-06-28 03:08:52,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6641, PETRI_PLACES=391, PETRI_TRANSITIONS=544} [2024-06-28 03:08:52,223 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-28 03:08:52,223 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 544 transitions, 6641 flow [2024-06-28 03:08:52,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 03:08:52,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:52,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:52,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:08:52,224 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:52,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1802362393, now seen corresponding path program 2 times [2024-06-28 03:08:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:52,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309355941] [2024-06-28 03:08:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:53,338 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 03:08:53,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309355941] [2024-06-28 03:08:53,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309355941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:53,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:53,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:08:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308640594] [2024-06-28 03:08:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:53,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:08:53,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:08:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:08:53,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:53,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 544 transitions, 6641 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:53,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:53,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:53,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:55,003 INFO L124 PetriNetUnfolderBase]: 3860/6211 cut-off events. [2024-06-28 03:08:55,003 INFO L125 PetriNetUnfolderBase]: For 1084098/1084098 co-relation queries the response was YES. [2024-06-28 03:08:55,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58921 conditions, 6211 events. 3860/6211 cut-off events. For 1084098/1084098 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 38801 event pairs, 978 based on Foata normal form. 2/6210 useless extension candidates. Maximal degree in co-relation 58743. Up to 5823 conditions per place. [2024-06-28 03:08:55,097 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 505 selfloop transitions, 26 changer transitions 0/566 dead transitions. [2024-06-28 03:08:55,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 566 transitions, 7773 flow [2024-06-28 03:08:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:08:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:08:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 03:08:55,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121951219512195 [2024-06-28 03:08:55,098 INFO L175 Difference]: Start difference. First operand has 391 places, 544 transitions, 6641 flow. Second operand 10 states and 169 transitions. [2024-06-28 03:08:55,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 566 transitions, 7773 flow [2024-06-28 03:08:59,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 566 transitions, 7623 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 03:08:59,614 INFO L231 Difference]: Finished difference. Result has 392 places, 544 transitions, 6549 flow [2024-06-28 03:08:59,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6491, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6549, PETRI_PLACES=392, PETRI_TRANSITIONS=544} [2024-06-28 03:08:59,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-28 03:08:59,615 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 544 transitions, 6549 flow [2024-06-28 03:08:59,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:59,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:59,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:59,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:08:59,615 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:59,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1275083709, now seen corresponding path program 3 times [2024-06-28 03:08:59,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:59,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620357525] [2024-06-28 03:08:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:00,578 INFO 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 03:09:00,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:00,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620357525] [2024-06-28 03:09:00,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620357525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:00,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:00,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:00,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430768256] [2024-06-28 03:09:00,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:00,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:00,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:00,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:00,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:00,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 544 transitions, 6549 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 03:09:00,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:00,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:00,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:02,128 INFO L124 PetriNetUnfolderBase]: 3868/6223 cut-off events. [2024-06-28 03:09:02,129 INFO L125 PetriNetUnfolderBase]: For 1101713/1101713 co-relation queries the response was YES. [2024-06-28 03:09:02,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59053 conditions, 6223 events. 3868/6223 cut-off events. For 1101713/1101713 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 38879 event pairs, 979 based on Foata normal form. 2/6222 useless extension candidates. Maximal degree in co-relation 58874. Up to 5834 conditions per place. [2024-06-28 03:09:02,221 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 494 selfloop transitions, 32 changer transitions 0/561 dead transitions. [2024-06-28 03:09:02,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 561 transitions, 7715 flow [2024-06-28 03:09:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:09:02,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:09:02,222 INFO L175 Difference]: Start difference. First operand has 392 places, 544 transitions, 6549 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:09:02,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 561 transitions, 7715 flow [2024-06-28 03:09:06,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 561 transitions, 7658 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:09:06,522 INFO L231 Difference]: Finished difference. Result has 392 places, 546 transitions, 6635 flow [2024-06-28 03:09:06,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6492, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6635, PETRI_PLACES=392, PETRI_TRANSITIONS=546} [2024-06-28 03:09:06,523 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-28 03:09:06,523 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 546 transitions, 6635 flow [2024-06-28 03:09:06,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 03:09:06,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:06,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:06,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:09:06,524 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:06,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:06,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1275083585, now seen corresponding path program 2 times [2024-06-28 03:09:06,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:06,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875284186] [2024-06-28 03:09:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:06,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:07,621 INFO 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 03:09:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:07,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875284186] [2024-06-28 03:09:07,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875284186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:07,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:07,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:09:07,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865283429] [2024-06-28 03:09:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:07,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:09:07,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:09:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:09:07,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:07,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 546 transitions, 6635 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:07,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:07,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:07,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:09,310 INFO L124 PetriNetUnfolderBase]: 3893/6259 cut-off events. [2024-06-28 03:09:09,311 INFO L125 PetriNetUnfolderBase]: For 1143160/1143164 co-relation queries the response was YES. [2024-06-28 03:09:09,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60055 conditions, 6259 events. 3893/6259 cut-off events. For 1143160/1143164 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 39138 event pairs, 981 based on Foata normal form. 3/6257 useless extension candidates. Maximal degree in co-relation 59875. Up to 5782 conditions per place. [2024-06-28 03:09:09,406 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 474 selfloop transitions, 65 changer transitions 0/574 dead transitions. [2024-06-28 03:09:09,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 574 transitions, 8169 flow [2024-06-28 03:09:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:09:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:09:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:09:09,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43658536585365854 [2024-06-28 03:09:09,408 INFO L175 Difference]: Start difference. First operand has 392 places, 546 transitions, 6635 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:09:09,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 574 transitions, 8169 flow [2024-06-28 03:09:13,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 574 transitions, 8042 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:13,918 INFO L231 Difference]: Finished difference. Result has 395 places, 552 transitions, 6807 flow [2024-06-28 03:09:13,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6508, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6807, PETRI_PLACES=395, PETRI_TRANSITIONS=552} [2024-06-28 03:09:13,918 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-06-28 03:09:13,918 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 552 transitions, 6807 flow [2024-06-28 03:09:13,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:13,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:13,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:13,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:09:13,919 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:13,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1274905955, now seen corresponding path program 3 times [2024-06-28 03:09:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:13,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772601799] [2024-06-28 03:09:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:13,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:15,002 INFO 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 03:09:15,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:15,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772601799] [2024-06-28 03:09:15,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772601799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:15,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:15,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:09:15,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845345927] [2024-06-28 03:09:15,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:15,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:09:15,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:15,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:09:15,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:09:15,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:15,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 552 transitions, 6807 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:15,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:15,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:15,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:16,638 INFO L124 PetriNetUnfolderBase]: 3897/6260 cut-off events. [2024-06-28 03:09:16,639 INFO L125 PetriNetUnfolderBase]: For 1144707/1144709 co-relation queries the response was YES. [2024-06-28 03:09:16,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60294 conditions, 6260 events. 3897/6260 cut-off events. For 1144707/1144709 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 39041 event pairs, 981 based on Foata normal form. 2/6259 useless extension candidates. Maximal degree in co-relation 60113. Up to 5801 conditions per place. [2024-06-28 03:09:16,731 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 475 selfloop transitions, 60 changer transitions 0/570 dead transitions. [2024-06-28 03:09:16,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 570 transitions, 7935 flow [2024-06-28 03:09:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:09:16,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:09:16,732 INFO L175 Difference]: Start difference. First operand has 395 places, 552 transitions, 6807 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:09:16,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 570 transitions, 7935 flow [2024-06-28 03:09:21,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 570 transitions, 7728 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-28 03:09:21,477 INFO L231 Difference]: Finished difference. Result has 398 places, 552 transitions, 6726 flow [2024-06-28 03:09:21,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6600, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6726, PETRI_PLACES=398, PETRI_TRANSITIONS=552} [2024-06-28 03:09:21,478 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-06-28 03:09:21,478 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 552 transitions, 6726 flow [2024-06-28 03:09:21,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:21,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:21,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:21,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:09:21,478 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:21,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash 883345743, now seen corresponding path program 1 times [2024-06-28 03:09:21,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:21,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822349344] [2024-06-28 03:09:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:21,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:22,509 INFO 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 03:09:22,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822349344] [2024-06-28 03:09:22,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822349344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:22,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:22,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:09:22,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798527076] [2024-06-28 03:09:22,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:22,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:09:22,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:22,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:09:22,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:09:22,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:09:22,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 552 transitions, 6726 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:09:22,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:22,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:09:22,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:24,340 INFO L124 PetriNetUnfolderBase]: 4046/6414 cut-off events. [2024-06-28 03:09:24,341 INFO L125 PetriNetUnfolderBase]: For 1146264/1146264 co-relation queries the response was YES. [2024-06-28 03:09:24,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61281 conditions, 6414 events. 4046/6414 cut-off events. For 1146264/1146264 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 39386 event pairs, 1012 based on Foata normal form. 1/6412 useless extension candidates. Maximal degree in co-relation 61098. Up to 6217 conditions per place. [2024-06-28 03:09:24,435 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 542 selfloop transitions, 23 changer transitions 0/569 dead transitions. [2024-06-28 03:09:24,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 569 transitions, 8007 flow [2024-06-28 03:09:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:09:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:09:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:09:24,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-28 03:09:24,436 INFO L175 Difference]: Start difference. First operand has 398 places, 552 transitions, 6726 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:09:24,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 569 transitions, 8007 flow [2024-06-28 03:09:28,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 569 transitions, 7875 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:09:28,910 INFO L231 Difference]: Finished difference. Result has 398 places, 558 transitions, 6781 flow [2024-06-28 03:09:28,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6781, PETRI_PLACES=398, PETRI_TRANSITIONS=558} [2024-06-28 03:09:28,910 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-06-28 03:09:28,910 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 558 transitions, 6781 flow [2024-06-28 03:09:28,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:09:28,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:28,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:28,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:09:28,911 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:28,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1263470367, now seen corresponding path program 4 times [2024-06-28 03:09:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:28,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298837860] [2024-06-28 03:09:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:28,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:30,009 INFO 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 03:09:30,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:30,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298837860] [2024-06-28 03:09:30,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298837860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:30,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:30,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:09:30,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293864043] [2024-06-28 03:09:30,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:30,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:09:30,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:30,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:09:30,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:09:30,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:30,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 558 transitions, 6781 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:30,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:30,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:30,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:31,828 INFO L124 PetriNetUnfolderBase]: 3905/6277 cut-off events. [2024-06-28 03:09:31,828 INFO L125 PetriNetUnfolderBase]: For 1175277/1175279 co-relation queries the response was YES. [2024-06-28 03:09:31,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60618 conditions, 6277 events. 3905/6277 cut-off events. For 1175277/1175279 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 39308 event pairs, 979 based on Foata normal form. 2/6276 useless extension candidates. Maximal degree in co-relation 60434. Up to 5891 conditions per place. [2024-06-28 03:09:31,916 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 512 selfloop transitions, 28 changer transitions 0/575 dead transitions. [2024-06-28 03:09:31,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 575 transitions, 7991 flow [2024-06-28 03:09:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 03:09:31,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-28 03:09:31,918 INFO L175 Difference]: Start difference. First operand has 398 places, 558 transitions, 6781 flow. Second operand 9 states and 149 transitions. [2024-06-28 03:09:31,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 575 transitions, 7991 flow [2024-06-28 03:09:35,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 575 transitions, 7879 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:09:35,189 INFO L231 Difference]: Finished difference. Result has 401 places, 561 transitions, 6825 flow [2024-06-28 03:09:35,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6669, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6825, PETRI_PLACES=401, PETRI_TRANSITIONS=561} [2024-06-28 03:09:35,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-28 03:09:35,190 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 561 transitions, 6825 flow [2024-06-28 03:09:35,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:35,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:35,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:35,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:09:35,190 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:35,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1035391587, now seen corresponding path program 5 times [2024-06-28 03:09:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012156293] [2024-06-28 03:09:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:36,128 INFO 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 03:09:36,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012156293] [2024-06-28 03:09:36,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012156293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:36,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:36,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519063260] [2024-06-28 03:09:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:36,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:36,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:36,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:36,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:36,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 561 transitions, 6825 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 03:09:36,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:36,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:36,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:38,094 INFO L124 PetriNetUnfolderBase]: 3921/6298 cut-off events. [2024-06-28 03:09:38,095 INFO L125 PetriNetUnfolderBase]: For 1203431/1203433 co-relation queries the response was YES. [2024-06-28 03:09:38,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61562 conditions, 6298 events. 3921/6298 cut-off events. For 1203431/1203433 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 39430 event pairs, 981 based on Foata normal form. 3/6297 useless extension candidates. Maximal degree in co-relation 61377. Up to 5861 conditions per place. [2024-06-28 03:09:38,184 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 498 selfloop transitions, 52 changer transitions 0/585 dead transitions. [2024-06-28 03:09:38,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 585 transitions, 8405 flow [2024-06-28 03:09:38,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:09:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:09:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 03:09:38,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:09:38,185 INFO L175 Difference]: Start difference. First operand has 401 places, 561 transitions, 6825 flow. Second operand 10 states and 170 transitions. [2024-06-28 03:09:38,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 585 transitions, 8405 flow [2024-06-28 03:09:42,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 585 transitions, 8271 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:42,246 INFO L231 Difference]: Finished difference. Result has 404 places, 567 transitions, 6996 flow [2024-06-28 03:09:42,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6691, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6996, PETRI_PLACES=404, PETRI_TRANSITIONS=567} [2024-06-28 03:09:42,246 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-06-28 03:09:42,246 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 567 transitions, 6996 flow [2024-06-28 03:09:42,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 03:09:42,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:42,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:09:42,247 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:42,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1035391463, now seen corresponding path program 4 times [2024-06-28 03:09:42,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:42,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862514932] [2024-06-28 03:09:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:43,173 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 03:09:43,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:43,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862514932] [2024-06-28 03:09:43,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862514932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:43,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:43,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:43,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428493379] [2024-06-28 03:09:43,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:43,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:43,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:43,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:43,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:43,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:43,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 567 transitions, 6996 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 03:09:43,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:43,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:43,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:44,823 INFO L124 PetriNetUnfolderBase]: 3916/6289 cut-off events. [2024-06-28 03:09:44,823 INFO L125 PetriNetUnfolderBase]: For 1203481/1203483 co-relation queries the response was YES. [2024-06-28 03:09:44,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61716 conditions, 6289 events. 3916/6289 cut-off events. For 1203481/1203483 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 39326 event pairs, 987 based on Foata normal form. 2/6287 useless extension candidates. Maximal degree in co-relation 61530. Up to 5929 conditions per place. [2024-06-28 03:09:44,924 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 526 selfloop transitions, 20 changer transitions 0/581 dead transitions. [2024-06-28 03:09:44,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 581 transitions, 8202 flow [2024-06-28 03:09:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:09:44,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-28 03:09:44,925 INFO L175 Difference]: Start difference. First operand has 404 places, 567 transitions, 6996 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:09:44,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 581 transitions, 8202 flow [2024-06-28 03:09:49,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 581 transitions, 8034 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 03:09:49,337 INFO L231 Difference]: Finished difference. Result has 407 places, 569 transitions, 6959 flow [2024-06-28 03:09:49,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6828, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6959, PETRI_PLACES=407, PETRI_TRANSITIONS=569} [2024-06-28 03:09:49,338 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 365 predicate places. [2024-06-28 03:09:49,338 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 569 transitions, 6959 flow [2024-06-28 03:09:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 03:09:49,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:49,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:49,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:09:49,338 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:49,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:49,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1109266821, now seen corresponding path program 6 times [2024-06-28 03:09:49,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:49,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128877838] [2024-06-28 03:09:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:49,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:50,385 INFO 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 03:09:50,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128877838] [2024-06-28 03:09:50,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128877838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:50,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:50,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:09:50,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979098740] [2024-06-28 03:09:50,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:50,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:09:50,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:50,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:09:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:09:50,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:50,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 569 transitions, 6959 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:50,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:50,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:50,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:52,057 INFO L124 PetriNetUnfolderBase]: 3909/6281 cut-off events. [2024-06-28 03:09:52,057 INFO L125 PetriNetUnfolderBase]: For 1199833/1199835 co-relation queries the response was YES. [2024-06-28 03:09:52,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61321 conditions, 6281 events. 3909/6281 cut-off events. For 1199833/1199835 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 39209 event pairs, 977 based on Foata normal form. 2/6280 useless extension candidates. Maximal degree in co-relation 61133. Up to 5870 conditions per place. [2024-06-28 03:09:52,173 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 509 selfloop transitions, 40 changer transitions 0/584 dead transitions. [2024-06-28 03:09:52,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 584 transitions, 8103 flow [2024-06-28 03:09:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:52,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:09:52,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:09:52,174 INFO L175 Difference]: Start difference. First operand has 407 places, 569 transitions, 6959 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:09:52,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 584 transitions, 8103 flow [2024-06-28 03:09:56,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 584 transitions, 7938 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:56,621 INFO L231 Difference]: Finished difference. Result has 409 places, 569 transitions, 6880 flow [2024-06-28 03:09:56,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6794, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6880, PETRI_PLACES=409, PETRI_TRANSITIONS=569} [2024-06-28 03:09:56,621 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-06-28 03:09:56,621 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 569 transitions, 6880 flow [2024-06-28 03:09:56,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:56,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:56,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:56,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:09:56,622 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:56,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:56,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1476155685, now seen corresponding path program 1 times [2024-06-28 03:09:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:56,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684272969] [2024-06-28 03:09:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:56,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:57,735 INFO 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 03:09:57,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:57,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684272969] [2024-06-28 03:09:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684272969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:57,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:57,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:09:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632969632] [2024-06-28 03:09:57,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:57,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:09:57,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:09:57,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:09:57,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:09:57,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 569 transitions, 6880 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:09:57,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:57,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:09:57,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:59,539 INFO L124 PetriNetUnfolderBase]: 4075/6471 cut-off events. [2024-06-28 03:09:59,539 INFO L125 PetriNetUnfolderBase]: For 1204051/1204053 co-relation queries the response was YES. [2024-06-28 03:09:59,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62585 conditions, 6471 events. 4075/6471 cut-off events. For 1204051/1204053 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 39835 event pairs, 858 based on Foata normal form. 3/6471 useless extension candidates. Maximal degree in co-relation 62396. Up to 6120 conditions per place. [2024-06-28 03:09:59,641 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 526 selfloop transitions, 69 changer transitions 0/599 dead transitions. [2024-06-28 03:09:59,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 599 transitions, 8274 flow [2024-06-28 03:09:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:09:59,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:09:59,642 INFO L175 Difference]: Start difference. First operand has 409 places, 569 transitions, 6880 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:09:59,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 599 transitions, 8274 flow [2024-06-28 03:10:03,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 599 transitions, 8176 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:10:03,887 INFO L231 Difference]: Finished difference. Result has 410 places, 572 transitions, 7051 flow [2024-06-28 03:10:03,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6782, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7051, PETRI_PLACES=410, PETRI_TRANSITIONS=572} [2024-06-28 03:10:03,887 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-28 03:10:03,888 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 572 transitions, 7051 flow [2024-06-28 03:10:03,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:10:03,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:03,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:03,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:10:03,888 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:03,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1476035715, now seen corresponding path program 2 times [2024-06-28 03:10:03,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:03,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208941344] [2024-06-28 03:10:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:03,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:04,965 INFO 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 03:10:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:04,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208941344] [2024-06-28 03:10:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208941344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:10:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483859239] [2024-06-28 03:10:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:04,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:10:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:10:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:10:05,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:10:05,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 572 transitions, 7051 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:10:05,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:05,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:10:05,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:06,632 INFO L124 PetriNetUnfolderBase]: 4080/6478 cut-off events. [2024-06-28 03:10:06,632 INFO L125 PetriNetUnfolderBase]: For 1225243/1225245 co-relation queries the response was YES. [2024-06-28 03:10:06,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63305 conditions, 6478 events. 4080/6478 cut-off events. For 1225243/1225245 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39823 event pairs, 861 based on Foata normal form. 3/6478 useless extension candidates. Maximal degree in co-relation 63115. Up to 6056 conditions per place. [2024-06-28 03:10:06,739 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 502 selfloop transitions, 97 changer transitions 0/603 dead transitions. [2024-06-28 03:10:06,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 603 transitions, 8815 flow [2024-06-28 03:10:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:10:06,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:10:06,740 INFO L175 Difference]: Start difference. First operand has 410 places, 572 transitions, 7051 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:10:06,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 603 transitions, 8815 flow [2024-06-28 03:10:11,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 603 transitions, 8578 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:11,428 INFO L231 Difference]: Finished difference. Result has 412 places, 578 transitions, 7260 flow [2024-06-28 03:10:11,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6814, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7260, PETRI_PLACES=412, PETRI_TRANSITIONS=578} [2024-06-28 03:10:11,428 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-28 03:10:11,428 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 578 transitions, 7260 flow [2024-06-28 03:10:11,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:10:11,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:11,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:11,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:10:11,429 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:11,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:11,429 INFO L85 PathProgramCache]: Analyzing trace with hash -771380019, now seen corresponding path program 1 times [2024-06-28 03:10:11,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:11,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758901168] [2024-06-28 03:10:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:11,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758901168] [2024-06-28 03:10:12,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758901168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:12,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:12,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660163451] [2024-06-28 03:10:12,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:12,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:12,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:12,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:10:12,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 578 transitions, 7260 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:12,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:12,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:10:12,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:14,198 INFO L124 PetriNetUnfolderBase]: 4085/6482 cut-off events. [2024-06-28 03:10:14,198 INFO L125 PetriNetUnfolderBase]: For 1252418/1252420 co-relation queries the response was YES. [2024-06-28 03:10:14,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63845 conditions, 6482 events. 4085/6482 cut-off events. For 1252418/1252420 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 39866 event pairs, 871 based on Foata normal form. 3/6482 useless extension candidates. Maximal degree in co-relation 63654. Up to 6075 conditions per place. [2024-06-28 03:10:14,303 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 509 selfloop transitions, 96 changer transitions 0/609 dead transitions. [2024-06-28 03:10:14,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 609 transitions, 8990 flow [2024-06-28 03:10:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:10:14,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:10:14,304 INFO L175 Difference]: Start difference. First operand has 412 places, 578 transitions, 7260 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:10:14,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 609 transitions, 8990 flow [2024-06-28 03:10:19,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 609 transitions, 8759 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-28 03:10:19,078 INFO L231 Difference]: Finished difference. Result has 416 places, 584 transitions, 7425 flow [2024-06-28 03:10:19,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7029, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7425, PETRI_PLACES=416, PETRI_TRANSITIONS=584} [2024-06-28 03:10:19,078 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-06-28 03:10:19,079 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 584 transitions, 7425 flow [2024-06-28 03:10:19,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:19,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:19,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:19,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:10:19,079 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:19,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash -169752741, now seen corresponding path program 3 times [2024-06-28 03:10:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:19,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733470480] [2024-06-28 03:10:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:19,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:20,058 INFO 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 03:10:20,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:20,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733470480] [2024-06-28 03:10:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733470480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:20,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:20,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892063997] [2024-06-28 03:10:20,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:20,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:20,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:10:20,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 584 transitions, 7425 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:20,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:20,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:10:20,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:21,766 INFO L124 PetriNetUnfolderBase]: 4090/6483 cut-off events. [2024-06-28 03:10:21,767 INFO L125 PetriNetUnfolderBase]: For 1274027/1274029 co-relation queries the response was YES. [2024-06-28 03:10:21,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64509 conditions, 6483 events. 4090/6483 cut-off events. For 1274027/1274029 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 39806 event pairs, 884 based on Foata normal form. 3/6483 useless extension candidates. Maximal degree in co-relation 64316. Up to 6194 conditions per place. [2024-06-28 03:10:21,873 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 543 selfloop transitions, 61 changer transitions 0/608 dead transitions. [2024-06-28 03:10:21,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 608 transitions, 8787 flow [2024-06-28 03:10:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:10:21,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:10:21,874 INFO L175 Difference]: Start difference. First operand has 416 places, 584 transitions, 7425 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:10:21,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 608 transitions, 8787 flow [2024-06-28 03:10:26,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 608 transitions, 8585 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:26,355 INFO L231 Difference]: Finished difference. Result has 421 places, 587 transitions, 7445 flow [2024-06-28 03:10:26,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7223, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7445, PETRI_PLACES=421, PETRI_TRANSITIONS=587} [2024-06-28 03:10:26,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2024-06-28 03:10:26,356 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 587 transitions, 7445 flow [2024-06-28 03:10:26,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:26,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:26,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:26,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:10:26,356 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:26,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:26,357 INFO L85 PathProgramCache]: Analyzing trace with hash 783235545, now seen corresponding path program 2 times [2024-06-28 03:10:26,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:26,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211093612] [2024-06-28 03:10:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:27,220 INFO 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 03:10:27,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:27,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211093612] [2024-06-28 03:10:27,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211093612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:27,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:27,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:27,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911068253] [2024-06-28 03:10:27,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:27,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:27,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:27,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:10:27,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 587 transitions, 7445 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:27,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:27,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:10:27,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:29,062 INFO L124 PetriNetUnfolderBase]: 4100/6497 cut-off events. [2024-06-28 03:10:29,062 INFO L125 PetriNetUnfolderBase]: For 1292158/1292160 co-relation queries the response was YES. [2024-06-28 03:10:29,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64749 conditions, 6497 events. 4100/6497 cut-off events. For 1292158/1292160 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39859 event pairs, 887 based on Foata normal form. 3/6497 useless extension candidates. Maximal degree in co-relation 64554. Up to 6173 conditions per place. [2024-06-28 03:10:29,167 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 529 selfloop transitions, 81 changer transitions 0/614 dead transitions. [2024-06-28 03:10:29,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 614 transitions, 8812 flow [2024-06-28 03:10:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:10:29,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:10:29,169 INFO L175 Difference]: Start difference. First operand has 421 places, 587 transitions, 7445 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:10:29,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 614 transitions, 8812 flow [2024-06-28 03:10:34,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 614 transitions, 8612 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:34,386 INFO L231 Difference]: Finished difference. Result has 423 places, 593 transitions, 7500 flow [2024-06-28 03:10:34,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7500, PETRI_PLACES=423, PETRI_TRANSITIONS=593} [2024-06-28 03:10:34,386 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-28 03:10:34,386 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 593 transitions, 7500 flow [2024-06-28 03:10:34,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:34,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:34,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:34,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:10:34,387 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:34,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash 782998395, now seen corresponding path program 3 times [2024-06-28 03:10:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:34,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684880368] [2024-06-28 03:10:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:34,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:35,334 INFO 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 03:10:35,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:35,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684880368] [2024-06-28 03:10:35,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684880368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:35,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454885352] [2024-06-28 03:10:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:35,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:35,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:35,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:10:35,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 593 transitions, 7500 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:35,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:35,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:10:35,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:37,191 INFO L124 PetriNetUnfolderBase]: 4105/6508 cut-off events. [2024-06-28 03:10:37,192 INFO L125 PetriNetUnfolderBase]: For 1304626/1304628 co-relation queries the response was YES. [2024-06-28 03:10:37,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64580 conditions, 6508 events. 4105/6508 cut-off events. For 1304626/1304628 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 40000 event pairs, 887 based on Foata normal form. 3/6508 useless extension candidates. Maximal degree in co-relation 64384. Up to 6174 conditions per place. [2024-06-28 03:10:37,298 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 527 selfloop transitions, 86 changer transitions 0/617 dead transitions. [2024-06-28 03:10:37,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 617 transitions, 8854 flow [2024-06-28 03:10:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:10:37,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:10:37,299 INFO L175 Difference]: Start difference. First operand has 423 places, 593 transitions, 7500 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:10:37,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 617 transitions, 8854 flow [2024-06-28 03:10:42,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 617 transitions, 8657 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:42,942 INFO L231 Difference]: Finished difference. Result has 426 places, 596 transitions, 7549 flow [2024-06-28 03:10:42,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7303, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7549, PETRI_PLACES=426, PETRI_TRANSITIONS=596} [2024-06-28 03:10:42,943 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2024-06-28 03:10:42,943 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 596 transitions, 7549 flow [2024-06-28 03:10:42,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:42,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:42,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:42,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:10:42,944 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:42,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1332056618, now seen corresponding path program 1 times [2024-06-28 03:10:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:42,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953666674] [2024-06-28 03:10:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:43,911 INFO 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 03:10:43,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953666674] [2024-06-28 03:10:43,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953666674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:43,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:43,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:10:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596250819] [2024-06-28 03:10:43,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:43,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:10:43,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:43,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:10:43,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:10:44,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:10:44,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 596 transitions, 7549 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:10:44,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:44,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:10:44,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:45,783 INFO L124 PetriNetUnfolderBase]: 4118/6522 cut-off events. [2024-06-28 03:10:45,783 INFO L125 PetriNetUnfolderBase]: For 1332174/1332176 co-relation queries the response was YES. [2024-06-28 03:10:45,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65074 conditions, 6522 events. 4118/6522 cut-off events. For 1332174/1332176 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 40052 event pairs, 883 based on Foata normal form. 3/6522 useless extension candidates. Maximal degree in co-relation 64877. Up to 6258 conditions per place. [2024-06-28 03:10:45,885 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 596 selfloop transitions, 38 changer transitions 0/638 dead transitions. [2024-06-28 03:10:45,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 638 transitions, 9429 flow [2024-06-28 03:10:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:10:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:10:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 03:10:45,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-28 03:10:45,887 INFO L175 Difference]: Start difference. First operand has 426 places, 596 transitions, 7549 flow. Second operand 10 states and 168 transitions. [2024-06-28 03:10:45,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 638 transitions, 9429 flow [2024-06-28 03:10:52,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 638 transitions, 9211 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:52,446 INFO L231 Difference]: Finished difference. Result has 432 places, 611 transitions, 7723 flow [2024-06-28 03:10:52,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7331, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7723, PETRI_PLACES=432, PETRI_TRANSITIONS=611} [2024-06-28 03:10:52,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-28 03:10:52,447 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 611 transitions, 7723 flow [2024-06-28 03:10:52,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:10:52,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:52,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:52,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:10:52,448 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:52,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1486779919, now seen corresponding path program 1 times [2024-06-28 03:10:52,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:52,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836743416] [2024-06-28 03:10:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:52,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:53,276 INFO 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 03:10:53,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:53,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836743416] [2024-06-28 03:10:53,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836743416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:53,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:53,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:53,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278700484] [2024-06-28 03:10:53,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:53,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:53,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:53,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:10:53,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 611 transitions, 7723 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:10:53,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:53,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:10:53,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:55,177 INFO L124 PetriNetUnfolderBase]: 4128/6536 cut-off events. [2024-06-28 03:10:55,177 INFO L125 PetriNetUnfolderBase]: For 1365144/1365146 co-relation queries the response was YES. [2024-06-28 03:10:55,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65866 conditions, 6536 events. 4128/6536 cut-off events. For 1365144/1365146 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40105 event pairs, 882 based on Foata normal form. 4/6537 useless extension candidates. Maximal degree in co-relation 65665. Up to 6230 conditions per place. [2024-06-28 03:10:55,285 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 589 selfloop transitions, 44 changer transitions 0/637 dead transitions. [2024-06-28 03:10:55,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 637 transitions, 9177 flow [2024-06-28 03:10:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:10:55,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:10:55,286 INFO L175 Difference]: Start difference. First operand has 432 places, 611 transitions, 7723 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:10:55,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 637 transitions, 9177 flow [2024-06-28 03:11:02,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 637 transitions, 9024 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:02,095 INFO L231 Difference]: Finished difference. Result has 437 places, 614 transitions, 7769 flow [2024-06-28 03:11:02,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7570, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7769, PETRI_PLACES=437, PETRI_TRANSITIONS=614} [2024-06-28 03:11:02,096 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-28 03:11:02,096 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 614 transitions, 7769 flow [2024-06-28 03:11:02,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:11:02,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:02,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:11:02,096 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:02,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1486780074, now seen corresponding path program 2 times [2024-06-28 03:11:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431413736] [2024-06-28 03:11:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:03,084 INFO 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 03:11:03,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:03,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431413736] [2024-06-28 03:11:03,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431413736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:03,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:03,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119928276] [2024-06-28 03:11:03,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:03,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:03,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:03,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:11:03,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 614 transitions, 7769 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:11:03,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:03,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:11:03,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:05,103 INFO L124 PetriNetUnfolderBase]: 4125/6527 cut-off events. [2024-06-28 03:11:05,104 INFO L125 PetriNetUnfolderBase]: For 1370424/1370426 co-relation queries the response was YES. [2024-06-28 03:11:05,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66216 conditions, 6527 events. 4125/6527 cut-off events. For 1370424/1370426 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40016 event pairs, 882 based on Foata normal form. 3/6527 useless extension candidates. Maximal degree in co-relation 66013. Up to 6281 conditions per place. [2024-06-28 03:11:05,216 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 600 selfloop transitions, 32 changer transitions 0/636 dead transitions. [2024-06-28 03:11:05,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 636 transitions, 9105 flow [2024-06-28 03:11:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:11:05,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-28 03:11:05,217 INFO L175 Difference]: Start difference. First operand has 437 places, 614 transitions, 7769 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:11:05,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 636 transitions, 9105 flow [2024-06-28 03:11:10,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 636 transitions, 8888 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:10,581 INFO L231 Difference]: Finished difference. Result has 439 places, 614 transitions, 7622 flow [2024-06-28 03:11:10,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7552, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7622, PETRI_PLACES=439, PETRI_TRANSITIONS=614} [2024-06-28 03:11:10,581 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-28 03:11:10,581 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 614 transitions, 7622 flow [2024-06-28 03:11:10,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:11:10,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:10,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:10,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:11:10,582 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:10,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:10,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1483055052, now seen corresponding path program 1 times [2024-06-28 03:11:10,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:10,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633523052] [2024-06-28 03:11:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:11,376 INFO 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 03:11:11,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:11,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633523052] [2024-06-28 03:11:11,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633523052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:11,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:11,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:11,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27144461] [2024-06-28 03:11:11,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:11,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:11,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:11,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:11,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:11,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:11:11,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 614 transitions, 7622 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:11:11,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:11,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:11:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:13,349 INFO L124 PetriNetUnfolderBase]: 4177/6608 cut-off events. [2024-06-28 03:11:13,349 INFO L125 PetriNetUnfolderBase]: For 1453890/1453892 co-relation queries the response was YES. [2024-06-28 03:11:13,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67600 conditions, 6608 events. 4177/6608 cut-off events. For 1453890/1453892 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 40566 event pairs, 889 based on Foata normal form. 6/6611 useless extension candidates. Maximal degree in co-relation 67396. Up to 6079 conditions per place. [2024-06-28 03:11:13,461 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 540 selfloop transitions, 108 changer transitions 0/652 dead transitions. [2024-06-28 03:11:13,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 652 transitions, 9580 flow [2024-06-28 03:11:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:11:13,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 03:11:13,462 INFO L175 Difference]: Start difference. First operand has 439 places, 614 transitions, 7622 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:11:13,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 652 transitions, 9580 flow [2024-06-28 03:11:19,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 652 transitions, 9512 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:19,499 INFO L231 Difference]: Finished difference. Result has 442 places, 626 transitions, 8090 flow [2024-06-28 03:11:19,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7554, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8090, PETRI_PLACES=442, PETRI_TRANSITIONS=626} [2024-06-28 03:11:19,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 400 predicate places. [2024-06-28 03:11:19,499 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 626 transitions, 8090 flow [2024-06-28 03:11:19,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:11:19,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:19,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:19,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:11:19,500 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:19,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1483055269, now seen corresponding path program 2 times [2024-06-28 03:11:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:19,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067395918] [2024-06-28 03:11:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:20,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067395918] [2024-06-28 03:11:20,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067395918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:20,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:20,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:20,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004624400] [2024-06-28 03:11:20,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:20,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:20,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:20,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:20,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:11:20,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 626 transitions, 8090 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:11:20,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:20,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:11:20,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:22,265 INFO L124 PetriNetUnfolderBase]: 4219/6664 cut-off events. [2024-06-28 03:11:22,265 INFO L125 PetriNetUnfolderBase]: For 1504485/1504487 co-relation queries the response was YES. [2024-06-28 03:11:22,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70091 conditions, 6664 events. 4219/6664 cut-off events. For 1504485/1504487 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 40897 event pairs, 889 based on Foata normal form. 4/6665 useless extension candidates. Maximal degree in co-relation 69885. Up to 6071 conditions per place. [2024-06-28 03:11:22,384 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 541 selfloop transitions, 115 changer transitions 0/660 dead transitions. [2024-06-28 03:11:22,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 660 transitions, 10392 flow [2024-06-28 03:11:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:11:22,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:11:22,385 INFO L175 Difference]: Start difference. First operand has 442 places, 626 transitions, 8090 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:11:22,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 660 transitions, 10392 flow [2024-06-28 03:11:28,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 660 transitions, 10192 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:28,551 INFO L231 Difference]: Finished difference. Result has 447 places, 635 transitions, 8460 flow [2024-06-28 03:11:28,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7898, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8460, PETRI_PLACES=447, PETRI_TRANSITIONS=635} [2024-06-28 03:11:28,552 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 405 predicate places. [2024-06-28 03:11:28,552 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 635 transitions, 8460 flow [2024-06-28 03:11:28,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:11:28,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:28,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:28,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:11:28,552 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:28,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:28,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1839275677, now seen corresponding path program 3 times [2024-06-28 03:11:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:28,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006040446] [2024-06-28 03:11:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:29,343 INFO 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 03:11:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006040446] [2024-06-28 03:11:29,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006040446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:29,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:29,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:29,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172120848] [2024-06-28 03:11:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:29,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:29,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:29,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:11:29,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 635 transitions, 8460 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:11:29,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:29,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:11:29,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:31,193 INFO L124 PetriNetUnfolderBase]: 4213/6656 cut-off events. [2024-06-28 03:11:31,194 INFO L125 PetriNetUnfolderBase]: For 1509632/1509634 co-relation queries the response was YES. [2024-06-28 03:11:31,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69896 conditions, 6656 events. 4213/6656 cut-off events. For 1509632/1509634 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 40848 event pairs, 889 based on Foata normal form. 4/6657 useless extension candidates. Maximal degree in co-relation 69688. Up to 6066 conditions per place. [2024-06-28 03:11:31,313 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 542 selfloop transitions, 113 changer transitions 0/659 dead transitions. [2024-06-28 03:11:31,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 659 transitions, 10170 flow [2024-06-28 03:11:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:11:31,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:11:31,314 INFO L175 Difference]: Start difference. First operand has 447 places, 635 transitions, 8460 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:11:31,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 659 transitions, 10170 flow [2024-06-28 03:11:37,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 659 transitions, 9905 flow, removed 99 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:37,757 INFO L231 Difference]: Finished difference. Result has 452 places, 635 transitions, 8427 flow [2024-06-28 03:11:37,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8195, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8427, PETRI_PLACES=452, PETRI_TRANSITIONS=635} [2024-06-28 03:11:37,757 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 410 predicate places. [2024-06-28 03:11:37,757 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 635 transitions, 8427 flow [2024-06-28 03:11:37,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:11:37,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:37,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:37,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:11:37,758 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:37,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash -105814110, now seen corresponding path program 3 times [2024-06-28 03:11:37,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:37,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856711539] [2024-06-28 03:11:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:37,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:38,716 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 03:11:38,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:38,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856711539] [2024-06-28 03:11:38,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856711539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:38,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:38,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:38,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768216273] [2024-06-28 03:11:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:38,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:38,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:38,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:11:38,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 635 transitions, 8427 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:11:38,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:38,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:11:38,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:40,564 INFO L124 PetriNetUnfolderBase]: 4218/6665 cut-off events. [2024-06-28 03:11:40,564 INFO L125 PetriNetUnfolderBase]: For 1519818/1519820 co-relation queries the response was YES. [2024-06-28 03:11:40,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70148 conditions, 6665 events. 4218/6665 cut-off events. For 1519818/1519820 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 40903 event pairs, 880 based on Foata normal form. 3/6665 useless extension candidates. Maximal degree in co-relation 69938. Up to 6357 conditions per place. [2024-06-28 03:11:40,680 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 617 selfloop transitions, 59 changer transitions 0/680 dead transitions. [2024-06-28 03:11:40,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 680 transitions, 10258 flow [2024-06-28 03:11:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:11:40,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:11:40,681 INFO L175 Difference]: Start difference. First operand has 452 places, 635 transitions, 8427 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:11:40,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 680 transitions, 10258 flow [2024-06-28 03:11:47,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 680 transitions, 9986 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:47,931 INFO L231 Difference]: Finished difference. Result has 456 places, 657 transitions, 8698 flow [2024-06-28 03:11:47,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8172, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8698, PETRI_PLACES=456, PETRI_TRANSITIONS=657} [2024-06-28 03:11:47,931 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 414 predicate places. [2024-06-28 03:11:47,932 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 657 transitions, 8698 flow [2024-06-28 03:11:47,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:11:47,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:47,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:47,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:11:47,932 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:47,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash -279713951, now seen corresponding path program 4 times [2024-06-28 03:11:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019174193] [2024-06-28 03:11:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:47,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:48,841 INFO 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 03:11:48,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019174193] [2024-06-28 03:11:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019174193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:48,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:48,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:48,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268449117] [2024-06-28 03:11:48,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:48,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:48,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:48,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:48,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:48,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:11:48,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 657 transitions, 8698 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:11:48,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:48,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:11:48,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:50,840 INFO L124 PetriNetUnfolderBase]: 4228/6668 cut-off events. [2024-06-28 03:11:50,840 INFO L125 PetriNetUnfolderBase]: For 1543099/1543099 co-relation queries the response was YES. [2024-06-28 03:11:50,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70843 conditions, 6668 events. 4228/6668 cut-off events. For 1543099/1543099 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 40830 event pairs, 774 based on Foata normal form. 1/6666 useless extension candidates. Maximal degree in co-relation 70629. Up to 6350 conditions per place. [2024-06-28 03:11:50,961 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 594 selfloop transitions, 81 changer transitions 0/679 dead transitions. [2024-06-28 03:11:50,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 679 transitions, 10189 flow [2024-06-28 03:11:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:11:50,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-28 03:11:50,962 INFO L175 Difference]: Start difference. First operand has 456 places, 657 transitions, 8698 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:11:50,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 679 transitions, 10189 flow [2024-06-28 03:11:58,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 679 transitions, 10030 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 03:11:58,643 INFO L231 Difference]: Finished difference. Result has 462 places, 663 transitions, 8806 flow [2024-06-28 03:11:58,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8539, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8806, PETRI_PLACES=462, PETRI_TRANSITIONS=663} [2024-06-28 03:11:58,644 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-28 03:11:58,644 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 663 transitions, 8806 flow [2024-06-28 03:11:58,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:11:58,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:58,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:58,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:11:58,645 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:58,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1259581795, now seen corresponding path program 4 times [2024-06-28 03:11:58,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:58,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128733742] [2024-06-28 03:11:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:58,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:59,547 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 03:11:59,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:59,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128733742] [2024-06-28 03:11:59,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128733742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:59,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:59,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:59,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039462060] [2024-06-28 03:11:59,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:59,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:59,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:59,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:11:59,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 663 transitions, 8806 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:11:59,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:59,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:11:59,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:01,534 INFO L124 PetriNetUnfolderBase]: 4254/6706 cut-off events. [2024-06-28 03:12:01,534 INFO L125 PetriNetUnfolderBase]: For 1592621/1592623 co-relation queries the response was YES. [2024-06-28 03:12:01,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71693 conditions, 6706 events. 4254/6706 cut-off events. For 1592621/1592623 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 41084 event pairs, 875 based on Foata normal form. 4/6707 useless extension candidates. Maximal degree in co-relation 71477. Up to 6358 conditions per place. [2024-06-28 03:12:01,659 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 609 selfloop transitions, 78 changer transitions 0/691 dead transitions. [2024-06-28 03:12:01,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 691 transitions, 10760 flow [2024-06-28 03:12:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:12:01,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:12:01,660 INFO L175 Difference]: Start difference. First operand has 462 places, 663 transitions, 8806 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:12:01,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 691 transitions, 10760 flow [2024-06-28 03:12:08,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 691 transitions, 10492 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:08,878 INFO L231 Difference]: Finished difference. Result has 465 places, 669 transitions, 8887 flow [2024-06-28 03:12:08,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8538, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8887, PETRI_PLACES=465, PETRI_TRANSITIONS=669} [2024-06-28 03:12:08,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 423 predicate places. [2024-06-28 03:12:08,879 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 669 transitions, 8887 flow [2024-06-28 03:12:08,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:12:08,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:08,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:12:08,880 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:08,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash -286951180, now seen corresponding path program 4 times [2024-06-28 03:12:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253627178] [2024-06-28 03:12:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:09,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:09,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253627178] [2024-06-28 03:12:09,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253627178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:09,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:09,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973367652] [2024-06-28 03:12:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:09,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:09,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:09,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:09,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 669 transitions, 8887 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:12:09,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:09,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:09,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:11,885 INFO L124 PetriNetUnfolderBase]: 4259/6713 cut-off events. [2024-06-28 03:12:11,886 INFO L125 PetriNetUnfolderBase]: For 1604451/1604453 co-relation queries the response was YES. [2024-06-28 03:12:11,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71892 conditions, 6713 events. 4259/6713 cut-off events. For 1604451/1604453 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 41112 event pairs, 881 based on Foata normal form. 3/6713 useless extension candidates. Maximal degree in co-relation 71675. Up to 6479 conditions per place. [2024-06-28 03:12:12,014 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 646 selfloop transitions, 43 changer transitions 0/693 dead transitions. [2024-06-28 03:12:12,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 693 transitions, 10498 flow [2024-06-28 03:12:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:12:12,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-28 03:12:12,016 INFO L175 Difference]: Start difference. First operand has 465 places, 669 transitions, 8887 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:12:12,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 693 transitions, 10498 flow [2024-06-28 03:12:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 693 transitions, 10332 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 03:12:19,960 INFO L231 Difference]: Finished difference. Result has 470 places, 677 transitions, 9022 flow [2024-06-28 03:12:19,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8724, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9022, PETRI_PLACES=470, PETRI_TRANSITIONS=677} [2024-06-28 03:12:19,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 428 predicate places. [2024-06-28 03:12:19,961 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 677 transitions, 9022 flow [2024-06-28 03:12:19,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:12:19,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:19,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:19,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:12:19,961 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:19,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:19,961 INFO L85 PathProgramCache]: Analyzing trace with hash -279586138, now seen corresponding path program 2 times [2024-06-28 03:12:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:19,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966021047] [2024-06-28 03:12:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:20,759 INFO 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 03:12:20,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:20,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966021047] [2024-06-28 03:12:20,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966021047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:20,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:20,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:20,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065776156] [2024-06-28 03:12:20,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:20,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:20,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:20,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:20,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:20,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:20,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 677 transitions, 9022 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:12:20,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:20,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:20,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:22,814 INFO L124 PetriNetUnfolderBase]: 4279/6753 cut-off events. [2024-06-28 03:12:22,815 INFO L125 PetriNetUnfolderBase]: For 1657198/1657200 co-relation queries the response was YES. [2024-06-28 03:12:22,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72808 conditions, 6753 events. 4279/6753 cut-off events. For 1657198/1657200 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 41511 event pairs, 887 based on Foata normal form. 6/6756 useless extension candidates. Maximal degree in co-relation 72588. Up to 6475 conditions per place. [2024-06-28 03:12:22,943 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 639 selfloop transitions, 57 changer transitions 0/700 dead transitions. [2024-06-28 03:12:22,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 700 transitions, 10578 flow [2024-06-28 03:12:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:12:22,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:12:22,944 INFO L175 Difference]: Start difference. First operand has 470 places, 677 transitions, 9022 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:12:22,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 700 transitions, 10578 flow [2024-06-28 03:12:31,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 700 transitions, 10441 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 03:12:31,135 INFO L231 Difference]: Finished difference. Result has 475 places, 682 transitions, 9099 flow [2024-06-28 03:12:31,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8885, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9099, PETRI_PLACES=475, PETRI_TRANSITIONS=682} [2024-06-28 03:12:31,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-28 03:12:31,136 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 682 transitions, 9099 flow [2024-06-28 03:12:31,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:12:31,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:31,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:12:31,136 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:31,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -279593795, now seen corresponding path program 5 times [2024-06-28 03:12:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:31,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224384854] [2024-06-28 03:12:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:31,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:31,938 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 03:12:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224384854] [2024-06-28 03:12:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224384854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:31,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:31,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:31,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916302705] [2024-06-28 03:12:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:31,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:31,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:32,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:32,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 682 transitions, 9099 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:12:32,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:32,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:32,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:34,271 INFO L124 PetriNetUnfolderBase]: 4289/6767 cut-off events. [2024-06-28 03:12:34,271 INFO L125 PetriNetUnfolderBase]: For 1660775/1660777 co-relation queries the response was YES. [2024-06-28 03:12:34,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73205 conditions, 6767 events. 4289/6767 cut-off events. For 1660775/1660777 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 41618 event pairs, 884 based on Foata normal form. 4/6768 useless extension candidates. Maximal degree in co-relation 72983. Up to 6488 conditions per place. [2024-06-28 03:12:34,385 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 641 selfloop transitions, 58 changer transitions 0/703 dead transitions. [2024-06-28 03:12:34,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 703 transitions, 10675 flow [2024-06-28 03:12:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:12:34,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-28 03:12:34,386 INFO L175 Difference]: Start difference. First operand has 475 places, 682 transitions, 9099 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:12:34,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 703 transitions, 10675 flow [2024-06-28 03:12:43,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 703 transitions, 10499 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:43,887 INFO L231 Difference]: Finished difference. Result has 478 places, 685 transitions, 9139 flow [2024-06-28 03:12:43,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8923, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9139, PETRI_PLACES=478, PETRI_TRANSITIONS=685} [2024-06-28 03:12:43,887 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-28 03:12:43,887 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 685 transitions, 9139 flow [2024-06-28 03:12:43,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:12:43,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:43,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:43,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:12:43,888 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:43,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1252224348, now seen corresponding path program 3 times [2024-06-28 03:12:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:43,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180853658] [2024-06-28 03:12:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:44,628 INFO 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 03:12:44,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:44,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180853658] [2024-06-28 03:12:44,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180853658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:44,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:44,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975994744] [2024-06-28 03:12:44,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:44,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:44,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:44,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:44,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:44,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 685 transitions, 9139 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:12:44,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:44,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:44,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:46,608 INFO L124 PetriNetUnfolderBase]: 4309/6795 cut-off events. [2024-06-28 03:12:46,608 INFO L125 PetriNetUnfolderBase]: For 1703178/1703180 co-relation queries the response was YES. [2024-06-28 03:12:46,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73535 conditions, 6795 events. 4309/6795 cut-off events. For 1703178/1703180 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 41741 event pairs, 887 based on Foata normal form. 6/6798 useless extension candidates. Maximal degree in co-relation 73312. Up to 6475 conditions per place. [2024-06-28 03:12:46,736 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 638 selfloop transitions, 66 changer transitions 0/708 dead transitions. [2024-06-28 03:12:46,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 708 transitions, 10727 flow [2024-06-28 03:12:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:46,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:12:46,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:12:46,737 INFO L175 Difference]: Start difference. First operand has 478 places, 685 transitions, 9139 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:12:46,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 708 transitions, 10727 flow [2024-06-28 03:12:56,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 708 transitions, 10567 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:56,230 INFO L231 Difference]: Finished difference. Result has 481 places, 688 transitions, 9201 flow [2024-06-28 03:12:56,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8979, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9201, PETRI_PLACES=481, PETRI_TRANSITIONS=688} [2024-06-28 03:12:56,230 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-28 03:12:56,230 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 688 transitions, 9201 flow [2024-06-28 03:12:56,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:12:56,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:56,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:56,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:12:56,231 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:56,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1259576215, now seen corresponding path program 6 times [2024-06-28 03:12:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:56,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663915702] [2024-06-28 03:12:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:56,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:57,035 INFO 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 03:12:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663915702] [2024-06-28 03:12:57,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663915702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:57,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:57,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552361660] [2024-06-28 03:12:57,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:57,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:57,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:57,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:57,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:57,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:57,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 688 transitions, 9201 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:12:57,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:57,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:57,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:59,452 INFO L124 PetriNetUnfolderBase]: 4303/6791 cut-off events. [2024-06-28 03:12:59,452 INFO L125 PetriNetUnfolderBase]: For 1684860/1684862 co-relation queries the response was YES. [2024-06-28 03:12:59,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73321 conditions, 6791 events. 4303/6791 cut-off events. For 1684860/1684862 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 41769 event pairs, 885 based on Foata normal form. 4/6792 useless extension candidates. Maximal degree in co-relation 73097. Up to 6426 conditions per place. [2024-06-28 03:12:59,667 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 622 selfloop transitions, 81 changer transitions 0/707 dead transitions. [2024-06-28 03:12:59,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 707 transitions, 10721 flow [2024-06-28 03:12:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:12:59,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:12:59,668 INFO L175 Difference]: Start difference. First operand has 481 places, 688 transitions, 9201 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:12:59,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 707 transitions, 10721 flow [2024-06-28 03:13:08,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 707 transitions, 10479 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:08,141 INFO L231 Difference]: Finished difference. Result has 483 places, 688 transitions, 9129 flow [2024-06-28 03:13:08,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8959, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9129, PETRI_PLACES=483, PETRI_TRANSITIONS=688} [2024-06-28 03:13:08,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 441 predicate places. [2024-06-28 03:13:08,142 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 688 transitions, 9129 flow [2024-06-28 03:13:08,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:13:08,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:08,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:08,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:13:08,143 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:08,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1086808183, now seen corresponding path program 5 times [2024-06-28 03:13:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:08,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736656769] [2024-06-28 03:13:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:09,270 INFO 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 03:13:09,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:09,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736656769] [2024-06-28 03:13:09,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736656769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:09,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:09,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:09,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114896611] [2024-06-28 03:13:09,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:09,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:09,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:09,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:09,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:09,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:09,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 688 transitions, 9129 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:13:09,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:09,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:09,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:11,958 INFO L124 PetriNetUnfolderBase]: 4333/6824 cut-off events. [2024-06-28 03:13:11,958 INFO L125 PetriNetUnfolderBase]: For 1695213/1695213 co-relation queries the response was YES. [2024-06-28 03:13:12,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73595 conditions, 6824 events. 4333/6824 cut-off events. For 1695213/1695213 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 41825 event pairs, 794 based on Foata normal form. 1/6816 useless extension candidates. Maximal degree in co-relation 73370. Up to 6488 conditions per place. [2024-06-28 03:13:12,077 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 627 selfloop transitions, 89 changer transitions 0/720 dead transitions. [2024-06-28 03:13:12,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 720 transitions, 10825 flow [2024-06-28 03:13:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:13:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:13:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 03:13:12,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:13:12,078 INFO L175 Difference]: Start difference. First operand has 483 places, 688 transitions, 9129 flow. Second operand 10 states and 164 transitions. [2024-06-28 03:13:12,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 720 transitions, 10825 flow [2024-06-28 03:13:20,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 720 transitions, 10624 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:13:20,557 INFO L231 Difference]: Finished difference. Result has 485 places, 705 transitions, 9343 flow [2024-06-28 03:13:20,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8928, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9343, PETRI_PLACES=485, PETRI_TRANSITIONS=705} [2024-06-28 03:13:20,557 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-28 03:13:20,557 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 705 transitions, 9343 flow [2024-06-28 03:13:20,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:13:20,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:20,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:20,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:13:20,558 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:20,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1090301666, now seen corresponding path program 4 times [2024-06-28 03:13:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:20,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46494777] [2024-06-28 03:13:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:21,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:21,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46494777] [2024-06-28 03:13:21,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46494777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:21,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:21,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:13:21,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097983909] [2024-06-28 03:13:21,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:21,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:13:21,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:13:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:13:21,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:21,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 705 transitions, 9343 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:13:21,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:21,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:21,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:23,848 INFO L124 PetriNetUnfolderBase]: 4353/6861 cut-off events. [2024-06-28 03:13:23,848 INFO L125 PetriNetUnfolderBase]: For 1748788/1748790 co-relation queries the response was YES. [2024-06-28 03:13:23,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74032 conditions, 6861 events. 4353/6861 cut-off events. For 1748788/1748790 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 42144 event pairs, 888 based on Foata normal form. 6/6864 useless extension candidates. Maximal degree in co-relation 73805. Up to 6471 conditions per place. [2024-06-28 03:13:23,966 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 638 selfloop transitions, 87 changer transitions 0/729 dead transitions. [2024-06-28 03:13:23,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 729 transitions, 11001 flow [2024-06-28 03:13:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:13:23,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:13:23,967 INFO L175 Difference]: Start difference. First operand has 485 places, 705 transitions, 9343 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:13:23,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 729 transitions, 11001 flow [2024-06-28 03:13:33,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 729 transitions, 10832 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 03:13:33,855 INFO L231 Difference]: Finished difference. Result has 490 places, 708 transitions, 9444 flow [2024-06-28 03:13:33,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9174, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9444, PETRI_PLACES=490, PETRI_TRANSITIONS=708} [2024-06-28 03:13:33,856 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 448 predicate places. [2024-06-28 03:13:33,856 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 708 transitions, 9444 flow [2024-06-28 03:13:33,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 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 03:13:33,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:33,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:33,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:13:33,856 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:33,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:33,856 INFO L85 PathProgramCache]: Analyzing trace with hash 117134775, now seen corresponding path program 6 times [2024-06-28 03:13:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:33,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883850133] [2024-06-28 03:13:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:33,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:34,828 INFO 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 03:13:34,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:34,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883850133] [2024-06-28 03:13:34,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883850133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:34,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:34,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332800531] [2024-06-28 03:13:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:34,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:34,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:34,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:34,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 708 transitions, 9444 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:13:34,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:34,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:34,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:37,340 INFO L124 PetriNetUnfolderBase]: 4366/6871 cut-off events. [2024-06-28 03:13:37,340 INFO L125 PetriNetUnfolderBase]: For 1751864/1751864 co-relation queries the response was YES. [2024-06-28 03:13:37,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74584 conditions, 6871 events. 4366/6871 cut-off events. For 1751864/1751864 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 42151 event pairs, 783 based on Foata normal form. 1/6869 useless extension candidates. Maximal degree in co-relation 74356. Up to 6517 conditions per place. [2024-06-28 03:13:37,457 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 623 selfloop transitions, 104 changer transitions 0/731 dead transitions. [2024-06-28 03:13:37,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 731 transitions, 11396 flow [2024-06-28 03:13:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:37,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:13:37,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:13:37,458 INFO L175 Difference]: Start difference. First operand has 490 places, 708 transitions, 9444 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:13:37,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 731 transitions, 11396 flow [2024-06-28 03:13:47,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 731 transitions, 11164 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:47,051 INFO L231 Difference]: Finished difference. Result has 492 places, 714 transitions, 9592 flow [2024-06-28 03:13:47,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9212, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9592, PETRI_PLACES=492, PETRI_TRANSITIONS=714} [2024-06-28 03:13:47,051 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 450 predicate places. [2024-06-28 03:13:47,051 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 714 transitions, 9592 flow [2024-06-28 03:13:47,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:13:47,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:47,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:47,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:13:47,052 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:47,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1263306817, now seen corresponding path program 4 times [2024-06-28 03:13:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:47,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697644710] [2024-06-28 03:13:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:47,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:48,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:48,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697644710] [2024-06-28 03:13:48,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697644710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:48,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:48,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461575841] [2024-06-28 03:13:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:48,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:48,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:48,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 714 transitions, 9592 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:13:48,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:48,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:48,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:50,550 INFO L124 PetriNetUnfolderBase]: 4371/6874 cut-off events. [2024-06-28 03:13:50,550 INFO L125 PetriNetUnfolderBase]: For 1773433/1773433 co-relation queries the response was YES. [2024-06-28 03:13:50,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74708 conditions, 6874 events. 4371/6874 cut-off events. For 1773433/1773433 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 42071 event pairs, 782 based on Foata normal form. 1/6872 useless extension candidates. Maximal degree in co-relation 74479. Up to 6582 conditions per place. [2024-06-28 03:13:50,667 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 665 selfloop transitions, 64 changer transitions 0/733 dead transitions. [2024-06-28 03:13:50,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 733 transitions, 11192 flow [2024-06-28 03:13:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:13:50,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-28 03:13:50,668 INFO L175 Difference]: Start difference. First operand has 492 places, 714 transitions, 9592 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:13:50,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 733 transitions, 11192 flow [2024-06-28 03:13:59,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 733 transitions, 11037 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:13:59,249 INFO L231 Difference]: Finished difference. Result has 497 places, 717 transitions, 9671 flow [2024-06-28 03:13:59,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9437, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9671, PETRI_PLACES=497, PETRI_TRANSITIONS=717} [2024-06-28 03:13:59,250 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-28 03:13:59,250 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 717 transitions, 9671 flow [2024-06-28 03:13:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:13:59,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:59,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:59,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:13:59,250 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:59,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash -860038035, now seen corresponding path program 1 times [2024-06-28 03:13:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:59,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52538602] [2024-06-28 03:13:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:59,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:00,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:00,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52538602] [2024-06-28 03:14:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52538602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:00,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:00,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125623301] [2024-06-28 03:14:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:00,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:00,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:00,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:00,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:00,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 717 transitions, 9671 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:00,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:00,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:00,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:02,881 INFO L124 PetriNetUnfolderBase]: 4379/6902 cut-off events. [2024-06-28 03:14:02,882 INFO L125 PetriNetUnfolderBase]: For 1807528/1807530 co-relation queries the response was YES. [2024-06-28 03:14:02,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75057 conditions, 6902 events. 4379/6902 cut-off events. For 1807528/1807530 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42399 event pairs, 754 based on Foata normal form. 4/6903 useless extension candidates. Maximal degree in co-relation 74826. Up to 6432 conditions per place. [2024-06-28 03:14:03,010 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 647 selfloop transitions, 98 changer transitions 0/749 dead transitions. [2024-06-28 03:14:03,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 749 transitions, 11615 flow [2024-06-28 03:14:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:14:03,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:14:03,011 INFO L175 Difference]: Start difference. First operand has 497 places, 717 transitions, 9671 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:14:03,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 749 transitions, 11615 flow [2024-06-28 03:14:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 749 transitions, 11409 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:14:12,267 INFO L231 Difference]: Finished difference. Result has 499 places, 721 transitions, 9746 flow [2024-06-28 03:14:12,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9465, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9746, PETRI_PLACES=499, PETRI_TRANSITIONS=721} [2024-06-28 03:14:12,267 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 457 predicate places. [2024-06-28 03:14:12,267 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 721 transitions, 9746 flow [2024-06-28 03:14:12,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:12,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:12,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:12,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:14:12,268 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:12,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1566645095, now seen corresponding path program 2 times [2024-06-28 03:14:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:12,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981151735] [2024-06-28 03:14:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:12,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:13,386 INFO 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 03:14:13,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:13,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981151735] [2024-06-28 03:14:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981151735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:13,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:13,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:13,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699629146] [2024-06-28 03:14:13,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:13,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:13,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:13,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:13,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:13,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:13,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 721 transitions, 9746 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:13,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:13,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:13,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:16,100 INFO L124 PetriNetUnfolderBase]: 4387/6908 cut-off events. [2024-06-28 03:14:16,100 INFO L125 PetriNetUnfolderBase]: For 1829831/1829833 co-relation queries the response was YES. [2024-06-28 03:14:16,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75462 conditions, 6908 events. 4387/6908 cut-off events. For 1829831/1829833 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42493 event pairs, 885 based on Foata normal form. 4/6909 useless extension candidates. Maximal degree in co-relation 75230. Up to 6560 conditions per place. [2024-06-28 03:14:16,217 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 645 selfloop transitions, 96 changer transitions 0/745 dead transitions. [2024-06-28 03:14:16,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 745 transitions, 11338 flow [2024-06-28 03:14:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:14:16,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:14:16,218 INFO L175 Difference]: Start difference. First operand has 499 places, 721 transitions, 9746 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:14:16,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 745 transitions, 11338 flow [2024-06-28 03:14:25,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 745 transitions, 11168 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 03:14:25,752 INFO L231 Difference]: Finished difference. Result has 503 places, 723 transitions, 9820 flow [2024-06-28 03:14:25,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9590, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9820, PETRI_PLACES=503, PETRI_TRANSITIONS=723} [2024-06-28 03:14:25,752 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-28 03:14:25,752 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 723 transitions, 9820 flow [2024-06-28 03:14:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:25,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:25,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:25,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:14:25,752 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:25,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:25,753 INFO L85 PathProgramCache]: Analyzing trace with hash 47303017, now seen corresponding path program 3 times [2024-06-28 03:14:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:25,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626040291] [2024-06-28 03:14:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:26,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:26,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626040291] [2024-06-28 03:14:26,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626040291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:26,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:26,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519997263] [2024-06-28 03:14:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:26,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:26,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:26,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:26,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 723 transitions, 9820 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:26,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:26,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:26,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:29,495 INFO L124 PetriNetUnfolderBase]: 4395/6920 cut-off events. [2024-06-28 03:14:29,495 INFO L125 PetriNetUnfolderBase]: For 1853090/1853092 co-relation queries the response was YES. [2024-06-28 03:14:29,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75774 conditions, 6920 events. 4395/6920 cut-off events. For 1853090/1853092 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 42523 event pairs, 883 based on Foata normal form. 4/6921 useless extension candidates. Maximal degree in co-relation 75540. Up to 6556 conditions per place. [2024-06-28 03:14:29,611 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 645 selfloop transitions, 99 changer transitions 0/748 dead transitions. [2024-06-28 03:14:29,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 748 transitions, 11410 flow [2024-06-28 03:14:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:14:29,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:14:29,612 INFO L175 Difference]: Start difference. First operand has 503 places, 723 transitions, 9820 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:14:29,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 748 transitions, 11410 flow [2024-06-28 03:14:37,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 748 transitions, 11202 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:14:37,725 INFO L231 Difference]: Finished difference. Result has 505 places, 725 transitions, 9851 flow [2024-06-28 03:14:37,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9612, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9851, PETRI_PLACES=505, PETRI_TRANSITIONS=725} [2024-06-28 03:14:37,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 463 predicate places. [2024-06-28 03:14:37,726 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 725 transitions, 9851 flow [2024-06-28 03:14:37,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:37,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:37,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:37,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:14:37,727 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:37,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash -290758817, now seen corresponding path program 4 times [2024-06-28 03:14:37,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:37,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135921973] [2024-06-28 03:14:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:37,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:38,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135921973] [2024-06-28 03:14:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135921973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:38,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:38,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:38,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871819362] [2024-06-28 03:14:38,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:38,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:38,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:38,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:38,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:38,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 725 transitions, 9851 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:38,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:38,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:38,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:41,513 INFO L124 PetriNetUnfolderBase]: 4403/6928 cut-off events. [2024-06-28 03:14:41,513 INFO L125 PetriNetUnfolderBase]: For 1875399/1875399 co-relation queries the response was YES. [2024-06-28 03:14:41,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76010 conditions, 6928 events. 4403/6928 cut-off events. For 1875399/1875399 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 42511 event pairs, 781 based on Foata normal form. 2/6927 useless extension candidates. Maximal degree in co-relation 75775. Up to 6584 conditions per place. [2024-06-28 03:14:41,633 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 647 selfloop transitions, 93 changer transitions 0/744 dead transitions. [2024-06-28 03:14:41,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 744 transitions, 11417 flow [2024-06-28 03:14:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:14:41,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:14:41,634 INFO L175 Difference]: Start difference. First operand has 505 places, 725 transitions, 9851 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:14:41,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 744 transitions, 11417 flow [2024-06-28 03:14:50,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 744 transitions, 11198 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:14:50,396 INFO L231 Difference]: Finished difference. Result has 507 places, 727 transitions, 9864 flow [2024-06-28 03:14:50,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9632, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9864, PETRI_PLACES=507, PETRI_TRANSITIONS=727} [2024-06-28 03:14:50,396 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 465 predicate places. [2024-06-28 03:14:50,396 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 727 transitions, 9864 flow [2024-06-28 03:14:50,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:50,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:50,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:50,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:14:50,397 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:50,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1252347697, now seen corresponding path program 5 times [2024-06-28 03:14:50,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:50,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860360847] [2024-06-28 03:14:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:50,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:51,403 INFO 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 03:14:51,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:51,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860360847] [2024-06-28 03:14:51,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860360847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:51,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:51,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575502784] [2024-06-28 03:14:51,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:51,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:51,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:51,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 727 transitions, 9864 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:14:51,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:51,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:51,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:54,111 INFO L124 PetriNetUnfolderBase]: 4411/6934 cut-off events. [2024-06-28 03:14:54,111 INFO L125 PetriNetUnfolderBase]: For 1898959/1898959 co-relation queries the response was YES. [2024-06-28 03:14:54,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76203 conditions, 6934 events. 4411/6934 cut-off events. For 1898959/1898959 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 42527 event pairs, 785 based on Foata normal form. 2/6933 useless extension candidates. Maximal degree in co-relation 75967. Up to 6596 conditions per place. [2024-06-28 03:14:54,245 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 648 selfloop transitions, 94 changer transitions 0/746 dead transitions. [2024-06-28 03:14:54,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 746 transitions, 11438 flow [2024-06-28 03:14:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:14:54,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-28 03:14:54,246 INFO L175 Difference]: Start difference. First operand has 507 places, 727 transitions, 9864 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:14:54,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 746 transitions, 11438 flow [2024-06-28 03:15:04,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 746 transitions, 11187 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:15:04,572 INFO L231 Difference]: Finished difference. Result has 508 places, 729 transitions, 9851 flow [2024-06-28 03:15:04,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9613, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9851, PETRI_PLACES=508, PETRI_TRANSITIONS=729} [2024-06-28 03:15:04,573 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-28 03:15:04,573 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 729 transitions, 9851 flow [2024-06-28 03:15:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:15:04,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:04,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:04,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:15:04,574 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:04,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash -842556395, now seen corresponding path program 6 times [2024-06-28 03:15:04,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:04,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625573862] [2024-06-28 03:15:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:04,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:05,611 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 03:15:05,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625573862] [2024-06-28 03:15:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625573862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:05,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:05,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:05,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937927669] [2024-06-28 03:15:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:05,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:05,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:05,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 729 transitions, 9851 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:15:05,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:05,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:05,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:08,215 INFO L124 PetriNetUnfolderBase]: 4419/6950 cut-off events. [2024-06-28 03:15:08,215 INFO L125 PetriNetUnfolderBase]: For 1922263/1922263 co-relation queries the response was YES. [2024-06-28 03:15:08,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76417 conditions, 6950 events. 4419/6950 cut-off events. For 1922263/1922263 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 42669 event pairs, 783 based on Foata normal form. 2/6949 useless extension candidates. Maximal degree in co-relation 76180. Up to 6584 conditions per place. [2024-06-28 03:15:08,337 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 648 selfloop transitions, 97 changer transitions 0/749 dead transitions. [2024-06-28 03:15:08,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 749 transitions, 11437 flow [2024-06-28 03:15:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:15:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:15:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:15:08,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:15:08,339 INFO L175 Difference]: Start difference. First operand has 508 places, 729 transitions, 9851 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:15:08,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 749 transitions, 11437 flow