./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.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/safe021_power.opt_pso.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/safe021_power.opt_pso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe021_power.opt_pso.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 04:21:42,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:21:42,149 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:21:42,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:21:42,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:21:42,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:21:42,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:21:42,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:21:42,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:21:42,190 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:21:42,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:21:42,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:21:42,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:21:42,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:21:42,193 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:21:42,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:21:42,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:21:42,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:21:42,198 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:21:42,198 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:21:42,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:21:42,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:21:42,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:21:42,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:21:42,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:21:42,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:21:42,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:21:42,200 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:21:42,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:21:42,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:21:42,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:21:42,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:21:42,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:21:42,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:21:42,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:21:42,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:21:42,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:21:42,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:21:42,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:21:42,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:21:42,204 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:21:42,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:21:42,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:21:42,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:21:42,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:21:42,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:21:42,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:21:42,454 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:21:42,455 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:21:42,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i [2024-06-28 04:21:43,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:21:43,689 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:21:43,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i [2024-06-28 04:21:43,710 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/453a5e89c/37a0485f7c8e4dc4a8858ad954e7c76f/FLAG656bf6d59 [2024-06-28 04:21:43,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/453a5e89c/37a0485f7c8e4dc4a8858ad954e7c76f [2024-06-28 04:21:43,724 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:21:43,724 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:21:43,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe021_power.opt_pso.opt.yml/witness.yml [2024-06-28 04:21:43,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:21:43,873 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:21:43,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:21:43,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:21:43,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:21:43,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:21:43" (1/2) ... [2024-06-28 04:21:43,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d540e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:21:43, skipping insertion in model container [2024-06-28 04:21:43,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:21:43" (1/2) ... [2024-06-28 04:21:43,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f91502e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:21:43, skipping insertion in model container [2024-06-28 04:21:43,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:21:43" (2/2) ... [2024-06-28 04:21:43,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d540e40 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:21:43, skipping insertion in model container [2024-06-28 04:21:43,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:21:43" (2/2) ... [2024-06-28 04:21:43,885 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:21:43,952 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:21:43,953 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$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_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 04:21:43,954 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! 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$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 04:21:43,954 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$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_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 04:21:43,954 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:21:43,954 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-06-28 04:21:43,991 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:21:44,277 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:21:44,285 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:21:44,407 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:21:44,435 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:21:44,435 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:21:44 WrapperNode [2024-06-28 04:21:44,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:21:44,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:21:44,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:21:44,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:21:44,441 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,453 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,488 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 144 [2024-06-28 04:21:44,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:21:44,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:21:44,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:21:44,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:21:44,498 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,498 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,501 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,526 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 04:21:44,527 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,527 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,539 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,541 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,556 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,558 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:21:44,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:21:44,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:21:44,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:21:44,562 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 04:21:44" (1/1) ... [2024-06-28 04:21:44,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:21:44,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:21:44,589 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 04:21:44,612 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 04:21:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:21:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:21:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:21:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:21:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:21:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:21:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:21:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:21:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:21:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:21:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:21:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:21:44,627 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 04:21:44,738 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:21:44,740 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:21:45,203 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:21:45,203 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:21:45,334 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:21:45,334 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:21:45,335 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:21:45 BoogieIcfgContainer [2024-06-28 04:21:45,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:21:45,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:21:45,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:21:45,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:21:45,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:21:43" (1/4) ... [2024-06-28 04:21:45,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e5f215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:21:45, skipping insertion in model container [2024-06-28 04:21:45,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:21:43" (2/4) ... [2024-06-28 04:21:45,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e5f215 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:21:45, skipping insertion in model container [2024-06-28 04:21:45,342 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 04:21:44" (3/4) ... [2024-06-28 04:21:45,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e5f215 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:21:45, skipping insertion in model container [2024-06-28 04:21:45,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:21:45" (4/4) ... [2024-06-28 04:21:45,343 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_power.opt_pso.opt.i [2024-06-28 04:21:45,355 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:21:45,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 04:21:45,355 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:21:45,388 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:21:45,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 04:21:45,436 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 04:21:45,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:21:45,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:21:45,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 04:21:45,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 04:21:45,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:21:45,460 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;@102c642b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:21:45,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 04:21:45,465 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:21:45,465 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:21:45,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:21:45,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:45,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:21:45,466 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 04:21:45,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:45,469 INFO L85 PathProgramCache]: Analyzing trace with hash 372110564, now seen corresponding path program 1 times [2024-06-28 04:21:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:45,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967491901] [2024-06-28 04:21:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:46,196 INFO 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 04:21:46,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:46,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967491901] [2024-06-28 04:21:46,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967491901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:46,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:21:46,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378965512] [2024-06-28 04:21:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:21:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:21:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:21:46,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 04:21:46,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:46,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:46,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 04:21:46,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:46,566 INFO L124 PetriNetUnfolderBase]: 1152/1755 cut-off events. [2024-06-28 04:21:46,566 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 04:21:46,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 1755 events. 1152/1755 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8178 event pairs, 794 based on Foata normal form. 2/1710 useless extension candidates. Maximal degree in co-relation 3583. Up to 1738 conditions per place. [2024-06-28 04:21:46,578 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 32 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 04:21:46,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 171 flow [2024-06-28 04:21:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:21:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:21:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-28 04:21:46,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 04:21:46,588 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 72 transitions. [2024-06-28 04:21:46,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 171 flow [2024-06-28 04:21:46,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 04:21:46,593 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 04:21:46,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 04:21:46,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 04:21:46,597 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 04:21:46,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:46,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:46,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:46,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:21:46,598 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 04:21:46,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1117077401, now seen corresponding path program 1 times [2024-06-28 04:21:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:46,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40013526] [2024-06-28 04:21:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:47,049 INFO 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 04:21:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40013526] [2024-06-28 04:21:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40013526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:47,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:21:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063610526] [2024-06-28 04:21:47,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:47,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:21:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:47,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:21:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:21:47,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:21:47,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:47,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:47,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:21:47,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:47,288 INFO L124 PetriNetUnfolderBase]: 1395/2101 cut-off events. [2024-06-28 04:21:47,289 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-06-28 04:21:47,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4853 conditions, 2101 events. 1395/2101 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9517 event pairs, 862 based on Foata normal form. 3/2102 useless extension candidates. Maximal degree in co-relation 4841. Up to 2073 conditions per place. [2024-06-28 04:21:47,299 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 42 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 04:21:47,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 252 flow [2024-06-28 04:21:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:21:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:21:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-06-28 04:21:47,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-28 04:21:47,301 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 89 transitions. [2024-06-28 04:21:47,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 252 flow [2024-06-28 04:21:47,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:21:47,303 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 150 flow [2024-06-28 04:21:47,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 04:21:47,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 04:21:47,304 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 150 flow [2024-06-28 04:21:47,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:47,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:47,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:47,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:21:47,305 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 04:21:47,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash 269662507, now seen corresponding path program 1 times [2024-06-28 04:21:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449457470] [2024-06-28 04:21:47,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:47,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449457470] [2024-06-28 04:21:47,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449457470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:47,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:47,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:21:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626500186] [2024-06-28 04:21:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:47,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:21:47,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:21:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:21:47,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:21:47,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:47,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:47,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:21:47,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:47,979 INFO L124 PetriNetUnfolderBase]: 1383/2083 cut-off events. [2024-06-28 04:21:47,980 INFO L125 PetriNetUnfolderBase]: For 1050/1058 co-relation queries the response was YES. [2024-06-28 04:21:47,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 2083 events. 1383/2083 cut-off events. For 1050/1058 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9484 event pairs, 612 based on Foata normal form. 12/2093 useless extension candidates. Maximal degree in co-relation 5345. Up to 2025 conditions per place. [2024-06-28 04:21:47,991 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 50 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-28 04:21:47,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 338 flow [2024-06-28 04:21:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:21:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:21:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 04:21:47,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 04:21:47,996 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 150 flow. Second operand 5 states and 110 transitions. [2024-06-28 04:21:47,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 338 flow [2024-06-28 04:21:47,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 336 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 04:21:47,999 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 196 flow [2024-06-28 04:21:47,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 04:21:48,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 04:21:48,001 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 196 flow [2024-06-28 04:21:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:48,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:48,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:21:48,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:48,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash -265907840, now seen corresponding path program 1 times [2024-06-28 04:21:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:48,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98356470] [2024-06-28 04:21:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:48,968 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 04:21:48,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:48,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98356470] [2024-06-28 04:21:48,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98356470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:48,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:48,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:21:48,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663124718] [2024-06-28 04:21:48,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:48,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:21:48,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:21:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:21:49,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:21:49,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:49,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:49,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:21:49,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:49,403 INFO L124 PetriNetUnfolderBase]: 1374/2068 cut-off events. [2024-06-28 04:21:49,404 INFO L125 PetriNetUnfolderBase]: For 1915/1923 co-relation queries the response was YES. [2024-06-28 04:21:49,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 2068 events. 1374/2068 cut-off events. For 1915/1923 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9324 event pairs, 472 based on Foata normal form. 12/2078 useless extension candidates. Maximal degree in co-relation 5841. Up to 1980 conditions per place. [2024-06-28 04:21:49,412 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 54 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-28 04:21:49,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 402 flow [2024-06-28 04:21:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:21:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:21:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-28 04:21:49,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 04:21:49,414 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 196 flow. Second operand 6 states and 126 transitions. [2024-06-28 04:21:49,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 402 flow [2024-06-28 04:21:49,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 380 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 04:21:49,417 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 215 flow [2024-06-28 04:21:49,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 04:21:49,418 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-28 04:21:49,418 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 215 flow [2024-06-28 04:21:49,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:49,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:49,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:49,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:21:49,419 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 04:21:49,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:49,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1195026544, now seen corresponding path program 1 times [2024-06-28 04:21:49,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:49,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946619509] [2024-06-28 04:21:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:49,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:49,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946619509] [2024-06-28 04:21:49,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946619509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:49,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:49,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:21:49,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882026206] [2024-06-28 04:21:49,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:49,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:21:49,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:49,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:21:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:21:50,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:21:50,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:50,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:50,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:21:50,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:50,268 INFO L124 PetriNetUnfolderBase]: 1323/2032 cut-off events. [2024-06-28 04:21:50,268 INFO L125 PetriNetUnfolderBase]: For 3107/3182 co-relation queries the response was YES. [2024-06-28 04:21:50,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6035 conditions, 2032 events. 1323/2032 cut-off events. For 3107/3182 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9563 event pairs, 816 based on Foata normal form. 4/1966 useless extension candidates. Maximal degree in co-relation 6015. Up to 1926 conditions per place. [2024-06-28 04:21:50,280 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 42 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-28 04:21:50,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 387 flow [2024-06-28 04:21:50,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:21:50,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:21:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 04:21:50,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:21:50,282 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 215 flow. Second operand 6 states and 100 transitions. [2024-06-28 04:21:50,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 387 flow [2024-06-28 04:21:50,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 354 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 04:21:50,290 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 274 flow [2024-06-28 04:21:50,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-06-28 04:21:50,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-28 04:21:50,292 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 274 flow [2024-06-28 04:21:50,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:50,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:50,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:50,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:21:50,296 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 04:21:50,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1608883590, now seen corresponding path program 1 times [2024-06-28 04:21:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:50,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856828370] [2024-06-28 04:21:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:50,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:50,884 INFO 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 04:21:50,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856828370] [2024-06-28 04:21:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856828370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:21:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771914205] [2024-06-28 04:21:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:50,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:21:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:21:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:21:50,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:21:50,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:50,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:50,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:21:50,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:51,240 INFO L124 PetriNetUnfolderBase]: 1532/2328 cut-off events. [2024-06-28 04:21:51,240 INFO L125 PetriNetUnfolderBase]: For 4775/4833 co-relation queries the response was YES. [2024-06-28 04:21:51,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7559 conditions, 2328 events. 1532/2328 cut-off events. For 4775/4833 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11051 event pairs, 959 based on Foata normal form. 2/2279 useless extension candidates. Maximal degree in co-relation 7535. Up to 2230 conditions per place. [2024-06-28 04:21:51,255 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 55 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-28 04:21:51,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 492 flow [2024-06-28 04:21:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:21:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:21:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 04:21:51,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:21:51,256 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 274 flow. Second operand 6 states and 100 transitions. [2024-06-28 04:21:51,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 492 flow [2024-06-28 04:21:51,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 473 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 04:21:51,261 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 358 flow [2024-06-28 04:21:51,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-28 04:21:51,261 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-28 04:21:51,261 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 358 flow [2024-06-28 04:21:51,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:51,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:51,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:21:51,262 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 04:21:51,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1337309475, now seen corresponding path program 1 times [2024-06-28 04:21:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:51,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279451727] [2024-06-28 04:21:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:51,805 INFO 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 04:21:51,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:51,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279451727] [2024-06-28 04:21:51,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279451727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:51,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:51,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:21:51,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827937334] [2024-06-28 04:21:51,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:51,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:21:51,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:51,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:21:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:21:51,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:21:51,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 358 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:51,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:51,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:21:51,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:52,204 INFO L124 PetriNetUnfolderBase]: 1557/2368 cut-off events. [2024-06-28 04:21:52,204 INFO L125 PetriNetUnfolderBase]: For 6190/6203 co-relation queries the response was YES. [2024-06-28 04:21:52,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8336 conditions, 2368 events. 1557/2368 cut-off events. For 6190/6203 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11035 event pairs, 893 based on Foata normal form. 8/2352 useless extension candidates. Maximal degree in co-relation 8308. Up to 2286 conditions per place. [2024-06-28 04:21:52,217 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 63 selfloop transitions, 19 changer transitions 0/89 dead transitions. [2024-06-28 04:21:52,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 615 flow [2024-06-28 04:21:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:21:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:21:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:21:52,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:21:52,218 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 358 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:21:52,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 615 flow [2024-06-28 04:21:52,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 609 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 04:21:52,225 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 455 flow [2024-06-28 04:21:52,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-28 04:21:52,225 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-06-28 04:21:52,225 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 455 flow [2024-06-28 04:21:52,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:52,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:52,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:52,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:21:52,226 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 04:21:52,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:52,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1669937297, now seen corresponding path program 2 times [2024-06-28 04:21:52,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494886231] [2024-06-28 04:21:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:52,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:52,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:52,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494886231] [2024-06-28 04:21:52,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494886231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:52,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:52,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:21:52,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023393758] [2024-06-28 04:21:52,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:52,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:21:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:21:52,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:21:52,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:21:52,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 455 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:52,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:52,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:21:52,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:53,176 INFO L124 PetriNetUnfolderBase]: 1542/2349 cut-off events. [2024-06-28 04:21:53,176 INFO L125 PetriNetUnfolderBase]: For 8329/8354 co-relation queries the response was YES. [2024-06-28 04:21:53,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8964 conditions, 2349 events. 1542/2349 cut-off events. For 8329/8354 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10921 event pairs, 889 based on Foata normal form. 10/2334 useless extension candidates. Maximal degree in co-relation 8932. Up to 2256 conditions per place. [2024-06-28 04:21:53,199 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 61 selfloop transitions, 20 changer transitions 0/88 dead transitions. [2024-06-28 04:21:53,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 687 flow [2024-06-28 04:21:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:21:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:21:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 04:21:53,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-28 04:21:53,204 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 455 flow. Second operand 6 states and 103 transitions. [2024-06-28 04:21:53,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 88 transitions, 687 flow [2024-06-28 04:21:53,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 88 transitions, 645 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:21:53,214 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 493 flow [2024-06-28 04:21:53,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=493, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-06-28 04:21:53,216 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-28 04:21:53,216 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 493 flow [2024-06-28 04:21:53,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:53,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:53,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:53,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:21:53,217 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 04:21:53,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash -5122763, now seen corresponding path program 3 times [2024-06-28 04:21:53,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:53,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343532112] [2024-06-28 04:21:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:53,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:53,775 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 04:21:53,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:53,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343532112] [2024-06-28 04:21:53,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343532112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:53,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:53,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:21:53,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478193472] [2024-06-28 04:21:53,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:53,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:21:53,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:53,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:21:53,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:21:53,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:21:53,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 493 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:53,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:53,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:21:53,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:54,199 INFO L124 PetriNetUnfolderBase]: 1566/2385 cut-off events. [2024-06-28 04:21:54,199 INFO L125 PetriNetUnfolderBase]: For 10833/10860 co-relation queries the response was YES. [2024-06-28 04:21:54,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9751 conditions, 2385 events. 1566/2385 cut-off events. For 10833/10860 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11148 event pairs, 890 based on Foata normal form. 12/2371 useless extension candidates. Maximal degree in co-relation 9718. Up to 2269 conditions per place. [2024-06-28 04:21:54,213 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 60 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-06-28 04:21:54,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 757 flow [2024-06-28 04:21:54,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:21:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:21:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 04:21:54,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:21:54,215 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 493 flow. Second operand 6 states and 102 transitions. [2024-06-28 04:21:54,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 757 flow [2024-06-28 04:21:54,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 697 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 04:21:54,223 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 569 flow [2024-06-28 04:21:54,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=569, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-28 04:21:54,224 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-06-28 04:21:54,224 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 569 flow [2024-06-28 04:21:54,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:54,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:54,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:54,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:21:54,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:54,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:54,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1664215441, now seen corresponding path program 1 times [2024-06-28 04:21:54,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:54,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023561672] [2024-06-28 04:21:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:54,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:54,889 INFO 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 04:21:54,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:54,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023561672] [2024-06-28 04:21:54,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023561672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:54,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:54,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:21:54,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051812264] [2024-06-28 04:21:54,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:54,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:21:54,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:54,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:21:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:21:54,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:21:54,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 569 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:54,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:54,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:21:54,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:55,299 INFO L124 PetriNetUnfolderBase]: 1606/2421 cut-off events. [2024-06-28 04:21:55,299 INFO L125 PetriNetUnfolderBase]: For 11599/11684 co-relation queries the response was YES. [2024-06-28 04:21:55,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 2421 events. 1606/2421 cut-off events. For 11599/11684 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11409 event pairs, 964 based on Foata normal form. 2/2356 useless extension candidates. Maximal degree in co-relation 9743. Up to 2311 conditions per place. [2024-06-28 04:21:55,313 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 71 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-06-28 04:21:55,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 809 flow [2024-06-28 04:21:55,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:21:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:21:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 04:21:55,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:21:55,315 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 569 flow. Second operand 7 states and 115 transitions. [2024-06-28 04:21:55,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 809 flow [2024-06-28 04:21:55,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 759 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 04:21:55,324 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 577 flow [2024-06-28 04:21:55,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=577, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-06-28 04:21:55,325 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-28 04:21:55,325 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 577 flow [2024-06-28 04:21:55,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:55,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:55,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:55,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:21:55,326 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 04:21:55,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1014233227, now seen corresponding path program 1 times [2024-06-28 04:21:55,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:55,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920802882] [2024-06-28 04:21:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:55,897 INFO 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 04:21:55,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:55,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920802882] [2024-06-28 04:21:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920802882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:55,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:21:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974815894] [2024-06-28 04:21:55,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:55,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:21:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:21:55,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:21:55,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:21:55,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 577 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:55,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:55,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:21:55,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:56,362 INFO L124 PetriNetUnfolderBase]: 1574/2380 cut-off events. [2024-06-28 04:21:56,362 INFO L125 PetriNetUnfolderBase]: For 12815/12921 co-relation queries the response was YES. [2024-06-28 04:21:56,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10096 conditions, 2380 events. 1574/2380 cut-off events. For 12815/12921 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11047 event pairs, 593 based on Foata normal form. 41/2370 useless extension candidates. Maximal degree in co-relation 10060. Up to 2221 conditions per place. [2024-06-28 04:21:56,374 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 84 selfloop transitions, 28 changer transitions 0/120 dead transitions. [2024-06-28 04:21:56,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 120 transitions, 939 flow [2024-06-28 04:21:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:21:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:21:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:21:56,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 04:21:56,376 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 577 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:21:56,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 120 transitions, 939 flow [2024-06-28 04:21:56,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 905 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:21:56,387 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 685 flow [2024-06-28 04:21:56,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2024-06-28 04:21:56,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-28 04:21:56,387 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 685 flow [2024-06-28 04:21:56,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:56,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:56,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:56,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:21:56,388 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 04:21:56,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1491979649, now seen corresponding path program 2 times [2024-06-28 04:21:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:56,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125240097] [2024-06-28 04:21:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:56,935 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 04:21:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125240097] [2024-06-28 04:21:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125240097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:56,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:21:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197986747] [2024-06-28 04:21:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:56,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:21:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:21:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:21:57,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:21:57,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:57,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:57,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:21:57,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:57,493 INFO L124 PetriNetUnfolderBase]: 1648/2489 cut-off events. [2024-06-28 04:21:57,494 INFO L125 PetriNetUnfolderBase]: For 16523/16699 co-relation queries the response was YES. [2024-06-28 04:21:57,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11559 conditions, 2489 events. 1648/2489 cut-off events. For 16523/16699 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11607 event pairs, 554 based on Foata normal form. 60/2494 useless extension candidates. Maximal degree in co-relation 11520. Up to 2299 conditions per place. [2024-06-28 04:21:57,509 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 86 selfloop transitions, 41 changer transitions 0/135 dead transitions. [2024-06-28 04:21:57,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 135 transitions, 1163 flow [2024-06-28 04:21:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:21:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:21:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 04:21:57,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:21:57,511 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 685 flow. Second operand 8 states and 140 transitions. [2024-06-28 04:21:57,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 135 transitions, 1163 flow [2024-06-28 04:21:57,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 135 transitions, 1088 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 04:21:57,523 INFO L231 Difference]: Finished difference. Result has 90 places, 110 transitions, 889 flow [2024-06-28 04:21:57,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=889, PETRI_PLACES=90, PETRI_TRANSITIONS=110} [2024-06-28 04:21:57,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-06-28 04:21:57,524 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 110 transitions, 889 flow [2024-06-28 04:21:57,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:57,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:57,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:57,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:21:57,525 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 04:21:57,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2016711183, now seen corresponding path program 1 times [2024-06-28 04:21:57,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:57,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752387636] [2024-06-28 04:21:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:57,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:58,028 INFO 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 04:21:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:58,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752387636] [2024-06-28 04:21:58,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752387636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:58,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:58,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:21:58,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631363279] [2024-06-28 04:21:58,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:58,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:21:58,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:58,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:21:58,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:21:58,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:21:58,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 889 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:58,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:58,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:21:58,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:58,448 INFO L124 PetriNetUnfolderBase]: 1796/2691 cut-off events. [2024-06-28 04:21:58,448 INFO L125 PetriNetUnfolderBase]: For 18873/18873 co-relation queries the response was YES. [2024-06-28 04:21:58,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12860 conditions, 2691 events. 1796/2691 cut-off events. For 18873/18873 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12432 event pairs, 826 based on Foata normal form. 2/2692 useless extension candidates. Maximal degree in co-relation 12818. Up to 2626 conditions per place. [2024-06-28 04:21:58,468 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 123 selfloop transitions, 20 changer transitions 0/146 dead transitions. [2024-06-28 04:21:58,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 146 transitions, 1367 flow [2024-06-28 04:21:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:21:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:21:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:21:58,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 04:21:58,470 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 889 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:21:58,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 146 transitions, 1367 flow [2024-06-28 04:21:58,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 146 transitions, 1300 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 04:21:58,486 INFO L231 Difference]: Finished difference. Result has 98 places, 122 transitions, 1016 flow [2024-06-28 04:21:58,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1016, PETRI_PLACES=98, PETRI_TRANSITIONS=122} [2024-06-28 04:21:58,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-28 04:21:58,487 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 122 transitions, 1016 flow [2024-06-28 04:21:58,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:58,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:58,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:58,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:21:58,488 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:58,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:58,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1458916289, now seen corresponding path program 3 times [2024-06-28 04:21:58,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:58,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936176812] [2024-06-28 04:21:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:58,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:59,051 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 04:21:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936176812] [2024-06-28 04:21:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936176812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:21:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348258566] [2024-06-28 04:21:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:59,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:21:59,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:21:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:21:59,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:21:59,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 122 transitions, 1016 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:59,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:59,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:21:59,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:59,503 INFO L124 PetriNetUnfolderBase]: 1721/2604 cut-off events. [2024-06-28 04:21:59,503 INFO L125 PetriNetUnfolderBase]: For 24752/24848 co-relation queries the response was YES. [2024-06-28 04:21:59,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13305 conditions, 2604 events. 1721/2604 cut-off events. For 24752/24848 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12243 event pairs, 535 based on Foata normal form. 45/2594 useless extension candidates. Maximal degree in co-relation 13259. Up to 2329 conditions per place. [2024-06-28 04:21:59,523 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 90 selfloop transitions, 54 changer transitions 0/156 dead transitions. [2024-06-28 04:21:59,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 156 transitions, 1516 flow [2024-06-28 04:21:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:21:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:21:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:21:59,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 04:21:59,525 INFO L175 Difference]: Start difference. First operand has 98 places, 122 transitions, 1016 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:21:59,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 156 transitions, 1516 flow [2024-06-28 04:21:59,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 1485 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 04:21:59,543 INFO L231 Difference]: Finished difference. Result has 104 places, 128 transitions, 1176 flow [2024-06-28 04:21:59,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1176, PETRI_PLACES=104, PETRI_TRANSITIONS=128} [2024-06-28 04:21:59,544 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-06-28 04:21:59,544 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 128 transitions, 1176 flow [2024-06-28 04:21:59,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:59,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:59,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:59,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:21:59,544 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 04:21:59,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash -228568021, now seen corresponding path program 4 times [2024-06-28 04:21:59,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:59,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501496450] [2024-06-28 04:21:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:59,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:00,057 INFO 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 04:22:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501496450] [2024-06-28 04:22:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501496450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:00,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:00,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87896898] [2024-06-28 04:22:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:00,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:00,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:00,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:00,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 128 transitions, 1176 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:00,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:00,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:00,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:00,574 INFO L124 PetriNetUnfolderBase]: 1704/2582 cut-off events. [2024-06-28 04:22:00,574 INFO L125 PetriNetUnfolderBase]: For 29940/30081 co-relation queries the response was YES. [2024-06-28 04:22:00,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13960 conditions, 2582 events. 1704/2582 cut-off events. For 29940/30081 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12114 event pairs, 566 based on Foata normal form. 54/2579 useless extension candidates. Maximal degree in co-relation 13912. Up to 2335 conditions per place. [2024-06-28 04:22:00,589 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 94 selfloop transitions, 48 changer transitions 0/154 dead transitions. [2024-06-28 04:22:00,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 1580 flow [2024-06-28 04:22:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:22:00,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 04:22:00,591 INFO L175 Difference]: Start difference. First operand has 104 places, 128 transitions, 1176 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:22:00,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 1580 flow [2024-06-28 04:22:00,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 154 transitions, 1508 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:00,609 INFO L231 Difference]: Finished difference. Result has 107 places, 131 transitions, 1266 flow [2024-06-28 04:22:00,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1266, PETRI_PLACES=107, PETRI_TRANSITIONS=131} [2024-06-28 04:22:00,609 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-28 04:22:00,610 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 131 transitions, 1266 flow [2024-06-28 04:22:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:00,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:00,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:00,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:22:00,610 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 04:22:00,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash -228447865, now seen corresponding path program 2 times [2024-06-28 04:22:00,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:00,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808741011] [2024-06-28 04:22:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:00,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:01,117 INFO 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 04:22:01,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:01,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808741011] [2024-06-28 04:22:01,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808741011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:01,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:01,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:01,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022497077] [2024-06-28 04:22:01,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:01,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:01,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:01,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:01,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 131 transitions, 1266 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:01,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:01,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:01,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:01,586 INFO L124 PetriNetUnfolderBase]: 1895/2833 cut-off events. [2024-06-28 04:22:01,586 INFO L125 PetriNetUnfolderBase]: For 31633/31635 co-relation queries the response was YES. [2024-06-28 04:22:01,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15651 conditions, 2833 events. 1895/2833 cut-off events. For 31633/31635 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13153 event pairs, 823 based on Foata normal form. 4/2836 useless extension candidates. Maximal degree in co-relation 15601. Up to 2750 conditions per place. [2024-06-28 04:22:01,606 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 130 selfloop transitions, 24 changer transitions 0/157 dead transitions. [2024-06-28 04:22:01,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 157 transitions, 1692 flow [2024-06-28 04:22:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 04:22:01,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:22:01,608 INFO L175 Difference]: Start difference. First operand has 107 places, 131 transitions, 1266 flow. Second operand 7 states and 112 transitions. [2024-06-28 04:22:01,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 157 transitions, 1692 flow [2024-06-28 04:22:01,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 157 transitions, 1596 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:01,635 INFO L231 Difference]: Finished difference. Result has 110 places, 137 transitions, 1298 flow [2024-06-28 04:22:01,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1298, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2024-06-28 04:22:01,635 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-28 04:22:01,635 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 137 transitions, 1298 flow [2024-06-28 04:22:01,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:01,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:01,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:01,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:22:01,636 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 04:22:01,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:01,637 INFO L85 PathProgramCache]: Analyzing trace with hash -163446679, now seen corresponding path program 5 times [2024-06-28 04:22:01,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:01,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741102824] [2024-06-28 04:22:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:02,143 INFO 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 04:22:02,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:02,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741102824] [2024-06-28 04:22:02,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741102824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:02,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:02,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:02,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899607620] [2024-06-28 04:22:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:02,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:02,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:02,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 137 transitions, 1298 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:02,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:02,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:02,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:02,641 INFO L124 PetriNetUnfolderBase]: 1797/2715 cut-off events. [2024-06-28 04:22:02,641 INFO L125 PetriNetUnfolderBase]: For 39179/39290 co-relation queries the response was YES. [2024-06-28 04:22:02,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15957 conditions, 2715 events. 1797/2715 cut-off events. For 39179/39290 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12745 event pairs, 538 based on Foata normal form. 51/2705 useless extension candidates. Maximal degree in co-relation 15905. Up to 2374 conditions per place. [2024-06-28 04:22:02,667 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 91 selfloop transitions, 62 changer transitions 0/167 dead transitions. [2024-06-28 04:22:02,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 167 transitions, 1840 flow [2024-06-28 04:22:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 04:22:02,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 04:22:02,670 INFO L175 Difference]: Start difference. First operand has 110 places, 137 transitions, 1298 flow. Second operand 7 states and 125 transitions. [2024-06-28 04:22:02,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 167 transitions, 1840 flow [2024-06-28 04:22:02,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 167 transitions, 1795 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:02,701 INFO L231 Difference]: Finished difference. Result has 114 places, 143 transitions, 1493 flow [2024-06-28 04:22:02,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1493, PETRI_PLACES=114, PETRI_TRANSITIONS=143} [2024-06-28 04:22:02,701 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-28 04:22:02,701 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 143 transitions, 1493 flow [2024-06-28 04:22:02,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:02,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:02,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:02,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:22:02,702 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 04:22:02,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1662270007, now seen corresponding path program 6 times [2024-06-28 04:22:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:02,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964418365] [2024-06-28 04:22:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:03,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964418365] [2024-06-28 04:22:03,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964418365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:03,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:03,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:03,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798403867] [2024-06-28 04:22:03,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:03,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:03,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:03,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:03,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:03,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:03,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 143 transitions, 1493 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:03,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:03,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:03,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:03,710 INFO L124 PetriNetUnfolderBase]: 1798/2718 cut-off events. [2024-06-28 04:22:03,710 INFO L125 PetriNetUnfolderBase]: For 41050/41164 co-relation queries the response was YES. [2024-06-28 04:22:03,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16237 conditions, 2718 events. 1798/2718 cut-off events. For 41050/41164 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12767 event pairs, 549 based on Foata normal form. 59/2712 useless extension candidates. Maximal degree in co-relation 16183. Up to 2330 conditions per place. [2024-06-28 04:22:03,728 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 88 selfloop transitions, 66 changer transitions 0/168 dead transitions. [2024-06-28 04:22:03,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 168 transitions, 1991 flow [2024-06-28 04:22:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 04:22:03,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 04:22:03,729 INFO L175 Difference]: Start difference. First operand has 114 places, 143 transitions, 1493 flow. Second operand 7 states and 124 transitions. [2024-06-28 04:22:03,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 168 transitions, 1991 flow [2024-06-28 04:22:03,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 168 transitions, 1900 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:03,754 INFO L231 Difference]: Finished difference. Result has 117 places, 146 transitions, 1604 flow [2024-06-28 04:22:03,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1604, PETRI_PLACES=117, PETRI_TRANSITIONS=146} [2024-06-28 04:22:03,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-28 04:22:03,755 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 146 transitions, 1604 flow [2024-06-28 04:22:03,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:03,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:03,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:03,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:22:03,755 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 04:22:03,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1662270193, now seen corresponding path program 3 times [2024-06-28 04:22:03,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:03,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542630127] [2024-06-28 04:22:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:03,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:04,310 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 04:22:04,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:04,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542630127] [2024-06-28 04:22:04,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542630127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:04,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:04,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:04,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203756283] [2024-06-28 04:22:04,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:04,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:04,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:04,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:04,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:04,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:04,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 146 transitions, 1604 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:04,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:04,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:04,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:04,824 INFO L124 PetriNetUnfolderBase]: 1946/2910 cut-off events. [2024-06-28 04:22:04,824 INFO L125 PetriNetUnfolderBase]: For 36553/36557 co-relation queries the response was YES. [2024-06-28 04:22:04,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16985 conditions, 2910 events. 1946/2910 cut-off events. For 36553/36557 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13603 event pairs, 831 based on Foata normal form. 6/2914 useless extension candidates. Maximal degree in co-relation 16930. Up to 2777 conditions per place. [2024-06-28 04:22:04,841 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 136 selfloop transitions, 36 changer transitions 0/175 dead transitions. [2024-06-28 04:22:04,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 175 transitions, 2152 flow [2024-06-28 04:22:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:04,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 04:22:04,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 04:22:04,843 INFO L175 Difference]: Start difference. First operand has 117 places, 146 transitions, 1604 flow. Second operand 8 states and 124 transitions. [2024-06-28 04:22:04,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 175 transitions, 2152 flow [2024-06-28 04:22:04,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 175 transitions, 1981 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:04,867 INFO L231 Difference]: Finished difference. Result has 121 places, 155 transitions, 1608 flow [2024-06-28 04:22:04,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1608, PETRI_PLACES=121, PETRI_TRANSITIONS=155} [2024-06-28 04:22:04,868 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-28 04:22:04,868 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 155 transitions, 1608 flow [2024-06-28 04:22:04,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:04,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:04,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:04,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:22:04,869 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 04:22:04,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash -51079195, now seen corresponding path program 4 times [2024-06-28 04:22:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:04,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195774648] [2024-06-28 04:22:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:04,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:05,396 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 04:22:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:05,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195774648] [2024-06-28 04:22:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195774648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:05,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:22:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357884300] [2024-06-28 04:22:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:05,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:22:05,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:22:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:22:05,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:05,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 155 transitions, 1608 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:05,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:05,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:05,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:05,859 INFO L124 PetriNetUnfolderBase]: 1941/2903 cut-off events. [2024-06-28 04:22:05,860 INFO L125 PetriNetUnfolderBase]: For 38796/38800 co-relation queries the response was YES. [2024-06-28 04:22:05,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17139 conditions, 2903 events. 1941/2903 cut-off events. For 38796/38800 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13519 event pairs, 831 based on Foata normal form. 6/2907 useless extension candidates. Maximal degree in co-relation 17082. Up to 2772 conditions per place. [2024-06-28 04:22:05,879 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 134 selfloop transitions, 37 changer transitions 0/174 dead transitions. [2024-06-28 04:22:05,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 174 transitions, 2023 flow [2024-06-28 04:22:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 04:22:05,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:22:05,880 INFO L175 Difference]: Start difference. First operand has 121 places, 155 transitions, 1608 flow. Second operand 7 states and 112 transitions. [2024-06-28 04:22:05,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 174 transitions, 2023 flow [2024-06-28 04:22:05,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 174 transitions, 1932 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:05,911 INFO L231 Difference]: Finished difference. Result has 124 places, 156 transitions, 1610 flow [2024-06-28 04:22:05,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1610, PETRI_PLACES=124, PETRI_TRANSITIONS=156} [2024-06-28 04:22:05,912 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-28 04:22:05,912 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 156 transitions, 1610 flow [2024-06-28 04:22:05,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:05,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:05,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:05,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:22:05,912 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:05,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:05,913 INFO L85 PathProgramCache]: Analyzing trace with hash -51070267, now seen corresponding path program 1 times [2024-06-28 04:22:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:05,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639947213] [2024-06-28 04:22:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:06,836 INFO 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 04:22:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639947213] [2024-06-28 04:22:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639947213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:06,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:06,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94523876] [2024-06-28 04:22:06,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:06,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:06,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:06,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:06,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 156 transitions, 1610 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:06,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:06,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:06,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:07,423 INFO L124 PetriNetUnfolderBase]: 1886/2844 cut-off events. [2024-06-28 04:22:07,423 INFO L125 PetriNetUnfolderBase]: For 46123/46318 co-relation queries the response was YES. [2024-06-28 04:22:07,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16929 conditions, 2844 events. 1886/2844 cut-off events. For 46123/46318 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13623 event pairs, 814 based on Foata normal form. 10/2793 useless extension candidates. Maximal degree in co-relation 16871. Up to 2676 conditions per place. [2024-06-28 04:22:07,438 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 136 selfloop transitions, 18 changer transitions 0/181 dead transitions. [2024-06-28 04:22:07,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 181 transitions, 2012 flow [2024-06-28 04:22:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 04:22:07,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-06-28 04:22:07,440 INFO L175 Difference]: Start difference. First operand has 124 places, 156 transitions, 1610 flow. Second operand 9 states and 139 transitions. [2024-06-28 04:22:07,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 181 transitions, 2012 flow [2024-06-28 04:22:07,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 181 transitions, 1954 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:07,463 INFO L231 Difference]: Finished difference. Result has 129 places, 158 transitions, 1615 flow [2024-06-28 04:22:07,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1615, PETRI_PLACES=129, PETRI_TRANSITIONS=158} [2024-06-28 04:22:07,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-28 04:22:07,463 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 158 transitions, 1615 flow [2024-06-28 04:22:07,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:07,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:07,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:22:07,464 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 04:22:07,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1785116638, now seen corresponding path program 1 times [2024-06-28 04:22:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762307805] [2024-06-28 04:22:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:08,206 INFO 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 04:22:08,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762307805] [2024-06-28 04:22:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762307805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:08,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:08,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:08,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937504762] [2024-06-28 04:22:08,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:08,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:08,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:08,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 158 transitions, 1615 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:08,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:08,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:08,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:08,751 INFO L124 PetriNetUnfolderBase]: 1798/2723 cut-off events. [2024-06-28 04:22:08,752 INFO L125 PetriNetUnfolderBase]: For 49378/49548 co-relation queries the response was YES. [2024-06-28 04:22:08,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16694 conditions, 2723 events. 1798/2723 cut-off events. For 49378/49548 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12762 event pairs, 706 based on Foata normal form. 46/2721 useless extension candidates. Maximal degree in co-relation 16635. Up to 2472 conditions per place. [2024-06-28 04:22:08,768 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 123 selfloop transitions, 51 changer transitions 0/192 dead transitions. [2024-06-28 04:22:08,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 192 transitions, 2133 flow [2024-06-28 04:22:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 04:22:08,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:22:08,773 INFO L175 Difference]: Start difference. First operand has 129 places, 158 transitions, 1615 flow. Second operand 8 states and 140 transitions. [2024-06-28 04:22:08,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 192 transitions, 2133 flow [2024-06-28 04:22:08,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 192 transitions, 2087 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:08,808 INFO L231 Difference]: Finished difference. Result has 131 places, 165 transitions, 1794 flow [2024-06-28 04:22:08,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1794, PETRI_PLACES=131, PETRI_TRANSITIONS=165} [2024-06-28 04:22:08,809 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-28 04:22:08,809 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 165 transitions, 1794 flow [2024-06-28 04:22:08,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:08,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:08,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:08,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:22:08,809 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 04:22:08,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:08,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1376496025, now seen corresponding path program 1 times [2024-06-28 04:22:08,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:08,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538387753] [2024-06-28 04:22:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:08,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538387753] [2024-06-28 04:22:09,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538387753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:09,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:09,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:09,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750288442] [2024-06-28 04:22:09,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:09,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:09,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:09,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:09,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 165 transitions, 1794 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:09,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:09,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:09,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:09,900 INFO L124 PetriNetUnfolderBase]: 1988/2962 cut-off events. [2024-06-28 04:22:09,900 INFO L125 PetriNetUnfolderBase]: For 49584/49586 co-relation queries the response was YES. [2024-06-28 04:22:09,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18277 conditions, 2962 events. 1988/2962 cut-off events. For 49584/49586 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13620 event pairs, 602 based on Foata normal form. 6/2967 useless extension candidates. Maximal degree in co-relation 18217. Up to 2791 conditions per place. [2024-06-28 04:22:09,919 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 178 selfloop transitions, 41 changer transitions 0/222 dead transitions. [2024-06-28 04:22:09,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 222 transitions, 2646 flow [2024-06-28 04:22:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:22:09,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:22:09,921 INFO L175 Difference]: Start difference. First operand has 131 places, 165 transitions, 1794 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:22:09,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 222 transitions, 2646 flow [2024-06-28 04:22:09,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 222 transitions, 2516 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:09,953 INFO L231 Difference]: Finished difference. Result has 138 places, 190 transitions, 2135 flow [2024-06-28 04:22:09,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2135, PETRI_PLACES=138, PETRI_TRANSITIONS=190} [2024-06-28 04:22:09,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-28 04:22:09,954 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 190 transitions, 2135 flow [2024-06-28 04:22:09,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:09,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:09,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:09,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:22:09,955 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 04:22:09,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1076304622, now seen corresponding path program 2 times [2024-06-28 04:22:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:09,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150610426] [2024-06-28 04:22:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:09,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:10,708 INFO 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 04:22:10,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:10,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150610426] [2024-06-28 04:22:10,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150610426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:10,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:10,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073035727] [2024-06-28 04:22:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:10,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:10,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:10,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:10,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:10,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:10,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 190 transitions, 2135 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:10,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:10,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:10,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:11,304 INFO L124 PetriNetUnfolderBase]: 1883/2841 cut-off events. [2024-06-28 04:22:11,305 INFO L125 PetriNetUnfolderBase]: For 59218/59353 co-relation queries the response was YES. [2024-06-28 04:22:11,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18707 conditions, 2841 events. 1883/2841 cut-off events. For 59218/59353 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13384 event pairs, 519 based on Foata normal form. 27/2795 useless extension candidates. Maximal degree in co-relation 18643. Up to 2555 conditions per place. [2024-06-28 04:22:11,325 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 132 selfloop transitions, 68 changer transitions 0/223 dead transitions. [2024-06-28 04:22:11,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 223 transitions, 2719 flow [2024-06-28 04:22:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 04:22:11,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 04:22:11,326 INFO L175 Difference]: Start difference. First operand has 138 places, 190 transitions, 2135 flow. Second operand 8 states and 141 transitions. [2024-06-28 04:22:11,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 223 transitions, 2719 flow [2024-06-28 04:22:11,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 223 transitions, 2656 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:11,372 INFO L231 Difference]: Finished difference. Result has 144 places, 198 transitions, 2334 flow [2024-06-28 04:22:11,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2334, PETRI_PLACES=144, PETRI_TRANSITIONS=198} [2024-06-28 04:22:11,373 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 04:22:11,373 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 198 transitions, 2334 flow [2024-06-28 04:22:11,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:11,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:11,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:11,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:22:11,374 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 04:22:11,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1359672173, now seen corresponding path program 2 times [2024-06-28 04:22:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:11,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155410800] [2024-06-28 04:22:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:11,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:11,921 INFO 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 04:22:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155410800] [2024-06-28 04:22:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155410800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:11,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:11,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829746666] [2024-06-28 04:22:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:12,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:12,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 198 transitions, 2334 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:12,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:12,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:12,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:12,561 INFO L124 PetriNetUnfolderBase]: 2040/3038 cut-off events. [2024-06-28 04:22:12,561 INFO L125 PetriNetUnfolderBase]: For 59386/59392 co-relation queries the response was YES. [2024-06-28 04:22:12,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19668 conditions, 3038 events. 2040/3038 cut-off events. For 59386/59392 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13989 event pairs, 572 based on Foata normal form. 10/3047 useless extension candidates. Maximal degree in co-relation 19602. Up to 2857 conditions per place. [2024-06-28 04:22:12,580 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 189 selfloop transitions, 49 changer transitions 0/241 dead transitions. [2024-06-28 04:22:12,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 241 transitions, 3035 flow [2024-06-28 04:22:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:12,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:22:12,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 04:22:12,581 INFO L175 Difference]: Start difference. First operand has 144 places, 198 transitions, 2334 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:22:12,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 241 transitions, 3035 flow [2024-06-28 04:22:12,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 241 transitions, 2907 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:12,623 INFO L231 Difference]: Finished difference. Result has 149 places, 211 transitions, 2455 flow [2024-06-28 04:22:12,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2455, PETRI_PLACES=149, PETRI_TRANSITIONS=211} [2024-06-28 04:22:12,623 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-28 04:22:12,623 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 211 transitions, 2455 flow [2024-06-28 04:22:12,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:12,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:12,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:12,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:22:12,624 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 04:22:12,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2018228710, now seen corresponding path program 1 times [2024-06-28 04:22:12,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:12,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402973116] [2024-06-28 04:22:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:12,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:13,295 INFO 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 04:22:13,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:13,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402973116] [2024-06-28 04:22:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402973116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:13,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466729059] [2024-06-28 04:22:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:13,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:13,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:13,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:13,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 211 transitions, 2455 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:13,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:13,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:13,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:13,896 INFO L124 PetriNetUnfolderBase]: 2051/3060 cut-off events. [2024-06-28 04:22:13,896 INFO L125 PetriNetUnfolderBase]: For 64859/64863 co-relation queries the response was YES. [2024-06-28 04:22:13,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20329 conditions, 3060 events. 2051/3060 cut-off events. For 64859/64863 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14230 event pairs, 790 based on Foata normal form. 6/3065 useless extension candidates. Maximal degree in co-relation 20261. Up to 2985 conditions per place. [2024-06-28 04:22:13,919 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 215 selfloop transitions, 24 changer transitions 0/242 dead transitions. [2024-06-28 04:22:13,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 242 transitions, 3065 flow [2024-06-28 04:22:13,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 04:22:13,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 04:22:13,920 INFO L175 Difference]: Start difference. First operand has 149 places, 211 transitions, 2455 flow. Second operand 9 states and 141 transitions. [2024-06-28 04:22:13,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 242 transitions, 3065 flow [2024-06-28 04:22:13,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 242 transitions, 3028 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:13,973 INFO L231 Difference]: Finished difference. Result has 156 places, 214 transitions, 2508 flow [2024-06-28 04:22:13,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2508, PETRI_PLACES=156, PETRI_TRANSITIONS=214} [2024-06-28 04:22:13,974 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-28 04:22:13,974 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 214 transitions, 2508 flow [2024-06-28 04:22:13,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:13,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:13,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:13,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:22:13,974 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 04:22:13,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash -993120617, now seen corresponding path program 3 times [2024-06-28 04:22:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:13,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138925212] [2024-06-28 04:22:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:14,501 INFO 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 04:22:14,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138925212] [2024-06-28 04:22:14,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138925212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:14,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:14,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:14,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93845054] [2024-06-28 04:22:14,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:14,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:14,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:14,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:14,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:14,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:14,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 214 transitions, 2508 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:14,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:14,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:14,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:15,099 INFO L124 PetriNetUnfolderBase]: 2159/3210 cut-off events. [2024-06-28 04:22:15,099 INFO L125 PetriNetUnfolderBase]: For 73912/73914 co-relation queries the response was YES. [2024-06-28 04:22:15,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21932 conditions, 3210 events. 2159/3210 cut-off events. For 73912/73914 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14838 event pairs, 516 based on Foata normal form. 10/3219 useless extension candidates. Maximal degree in co-relation 21862. Up to 2773 conditions per place. [2024-06-28 04:22:15,125 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 189 selfloop transitions, 72 changer transitions 0/264 dead transitions. [2024-06-28 04:22:15,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 264 transitions, 3454 flow [2024-06-28 04:22:15,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:22:15,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 04:22:15,126 INFO L175 Difference]: Start difference. First operand has 156 places, 214 transitions, 2508 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:22:15,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 264 transitions, 3454 flow [2024-06-28 04:22:15,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 264 transitions, 3388 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:15,182 INFO L231 Difference]: Finished difference. Result has 159 places, 230 transitions, 2841 flow [2024-06-28 04:22:15,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2442, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2841, PETRI_PLACES=159, PETRI_TRANSITIONS=230} [2024-06-28 04:22:15,183 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-28 04:22:15,183 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 230 transitions, 2841 flow [2024-06-28 04:22:15,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:15,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:15,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:15,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:22:15,183 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 04:22:15,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:15,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2018234507, now seen corresponding path program 4 times [2024-06-28 04:22:15,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:15,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725408111] [2024-06-28 04:22:15,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:15,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:15,728 INFO 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 04:22:15,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725408111] [2024-06-28 04:22:15,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725408111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:15,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:15,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679148653] [2024-06-28 04:22:15,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:15,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:15,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:15,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:15,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:15,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 230 transitions, 2841 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:15,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:15,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:15,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:16,385 INFO L124 PetriNetUnfolderBase]: 2165/3220 cut-off events. [2024-06-28 04:22:16,385 INFO L125 PetriNetUnfolderBase]: For 80661/80663 co-relation queries the response was YES. [2024-06-28 04:22:16,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23037 conditions, 3220 events. 2165/3220 cut-off events. For 80661/80663 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14892 event pairs, 544 based on Foata normal form. 6/3225 useless extension candidates. Maximal degree in co-relation 22965. Up to 2779 conditions per place. [2024-06-28 04:22:16,412 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 195 selfloop transitions, 70 changer transitions 0/268 dead transitions. [2024-06-28 04:22:16,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 268 transitions, 3674 flow [2024-06-28 04:22:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:16,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 04:22:16,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 04:22:16,413 INFO L175 Difference]: Start difference. First operand has 159 places, 230 transitions, 2841 flow. Second operand 9 states and 155 transitions. [2024-06-28 04:22:16,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 268 transitions, 3674 flow [2024-06-28 04:22:16,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 268 transitions, 3569 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:16,489 INFO L231 Difference]: Finished difference. Result has 164 places, 234 transitions, 2953 flow [2024-06-28 04:22:16,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2953, PETRI_PLACES=164, PETRI_TRANSITIONS=234} [2024-06-28 04:22:16,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-28 04:22:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 234 transitions, 2953 flow [2024-06-28 04:22:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:16,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:16,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:16,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:22:16,490 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash -775688398, now seen corresponding path program 3 times [2024-06-28 04:22:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403583190] [2024-06-28 04:22:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:16,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:17,203 INFO 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 04:22:17,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:17,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403583190] [2024-06-28 04:22:17,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403583190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:17,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:17,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:17,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048694317] [2024-06-28 04:22:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:17,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:17,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:17,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 234 transitions, 2953 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:17,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:17,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:17,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:17,873 INFO L124 PetriNetUnfolderBase]: 2065/3105 cut-off events. [2024-06-28 04:22:17,873 INFO L125 PetriNetUnfolderBase]: For 93003/93264 co-relation queries the response was YES. [2024-06-28 04:22:17,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22960 conditions, 3105 events. 2065/3105 cut-off events. For 93003/93264 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14731 event pairs, 668 based on Foata normal form. 27/3060 useless extension candidates. Maximal degree in co-relation 22886. Up to 2720 conditions per place. [2024-06-28 04:22:17,899 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 134 selfloop transitions, 87 changer transitions 0/257 dead transitions. [2024-06-28 04:22:17,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 257 transitions, 3483 flow [2024-06-28 04:22:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:22:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:22:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:22:17,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 04:22:17,900 INFO L175 Difference]: Start difference. First operand has 164 places, 234 transitions, 2953 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:22:17,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 257 transitions, 3483 flow [2024-06-28 04:22:17,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 257 transitions, 3338 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:17,976 INFO L231 Difference]: Finished difference. Result has 166 places, 234 transitions, 3038 flow [2024-06-28 04:22:17,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3038, PETRI_PLACES=166, PETRI_TRANSITIONS=234} [2024-06-28 04:22:17,976 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-28 04:22:17,977 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 234 transitions, 3038 flow [2024-06-28 04:22:17,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:17,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:17,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:22:17,977 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:17,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1504326731, now seen corresponding path program 5 times [2024-06-28 04:22:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302780778] [2024-06-28 04:22:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:18,510 INFO 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 04:22:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302780778] [2024-06-28 04:22:18,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302780778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:18,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:18,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:18,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386062153] [2024-06-28 04:22:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:18,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:18,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:18,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 234 transitions, 3038 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:18,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:18,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:18,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:19,130 INFO L124 PetriNetUnfolderBase]: 2179/3240 cut-off events. [2024-06-28 04:22:19,130 INFO L125 PetriNetUnfolderBase]: For 90846/90852 co-relation queries the response was YES. [2024-06-28 04:22:19,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23639 conditions, 3240 events. 2179/3240 cut-off events. For 90846/90852 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15089 event pairs, 571 based on Foata normal form. 10/3249 useless extension candidates. Maximal degree in co-relation 23564. Up to 2977 conditions per place. [2024-06-28 04:22:19,157 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 206 selfloop transitions, 59 changer transitions 0/268 dead transitions. [2024-06-28 04:22:19,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 268 transitions, 3768 flow [2024-06-28 04:22:19,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:22:19,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:22:19,158 INFO L175 Difference]: Start difference. First operand has 166 places, 234 transitions, 3038 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:22:19,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 268 transitions, 3768 flow [2024-06-28 04:22:19,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 268 transitions, 3562 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:19,240 INFO L231 Difference]: Finished difference. Result has 169 places, 240 transitions, 3086 flow [2024-06-28 04:22:19,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3086, PETRI_PLACES=169, PETRI_TRANSITIONS=240} [2024-06-28 04:22:19,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 128 predicate places. [2024-06-28 04:22:19,241 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 240 transitions, 3086 flow [2024-06-28 04:22:19,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:19,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:19,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:19,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:22:19,241 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:19,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash -771873166, now seen corresponding path program 2 times [2024-06-28 04:22:19,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:19,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557858777] [2024-06-28 04:22:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:19,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:19,914 INFO 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 04:22:19,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557858777] [2024-06-28 04:22:19,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557858777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:19,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:19,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325697876] [2024-06-28 04:22:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:19,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:19,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:19,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 240 transitions, 3086 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:19,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:19,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:19,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:20,571 INFO L124 PetriNetUnfolderBase]: 2243/3335 cut-off events. [2024-06-28 04:22:20,571 INFO L125 PetriNetUnfolderBase]: For 89750/89752 co-relation queries the response was YES. [2024-06-28 04:22:20,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24483 conditions, 3335 events. 2243/3335 cut-off events. For 89750/89752 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15524 event pairs, 508 based on Foata normal form. 12/3346 useless extension candidates. Maximal degree in co-relation 24406. Up to 2746 conditions per place. [2024-06-28 04:22:20,599 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 186 selfloop transitions, 96 changer transitions 0/285 dead transitions. [2024-06-28 04:22:20,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 285 transitions, 4078 flow [2024-06-28 04:22:20,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:22:20,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:22:20,600 INFO L175 Difference]: Start difference. First operand has 169 places, 240 transitions, 3086 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:22:20,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 285 transitions, 4078 flow [2024-06-28 04:22:20,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 285 transitions, 3995 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:20,689 INFO L231 Difference]: Finished difference. Result has 175 places, 256 transitions, 3534 flow [2024-06-28 04:22:20,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3534, PETRI_PLACES=175, PETRI_TRANSITIONS=256} [2024-06-28 04:22:20,690 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-28 04:22:20,690 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 256 transitions, 3534 flow [2024-06-28 04:22:20,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:20,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:20,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:20,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:22:20,690 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 04:22:20,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1508051381, now seen corresponding path program 6 times [2024-06-28 04:22:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:20,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326224704] [2024-06-28 04:22:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:21,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:21,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326224704] [2024-06-28 04:22:21,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326224704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:21,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:21,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:21,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928054146] [2024-06-28 04:22:21,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:21,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:21,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:21,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:21,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:21,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 256 transitions, 3534 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:21,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:21,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:21,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:22,013 INFO L124 PetriNetUnfolderBase]: 2287/3399 cut-off events. [2024-06-28 04:22:22,013 INFO L125 PetriNetUnfolderBase]: For 100424/100426 co-relation queries the response was YES. [2024-06-28 04:22:22,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26496 conditions, 3399 events. 2287/3399 cut-off events. For 100424/100426 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15878 event pairs, 510 based on Foata normal form. 10/3408 useless extension candidates. Maximal degree in co-relation 26415. Up to 2751 conditions per place. [2024-06-28 04:22:22,045 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 189 selfloop transitions, 99 changer transitions 0/291 dead transitions. [2024-06-28 04:22:22,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 291 transitions, 4442 flow [2024-06-28 04:22:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:22:22,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 04:22:22,047 INFO L175 Difference]: Start difference. First operand has 175 places, 256 transitions, 3534 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:22:22,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 291 transitions, 4442 flow [2024-06-28 04:22:22,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 291 transitions, 4333 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:22,152 INFO L231 Difference]: Finished difference. Result has 180 places, 262 transitions, 3765 flow [2024-06-28 04:22:22,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3429, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3765, PETRI_PLACES=180, PETRI_TRANSITIONS=262} [2024-06-28 04:22:22,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-28 04:22:22,152 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 262 transitions, 3765 flow [2024-06-28 04:22:22,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:22,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:22,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:22,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:22:22,153 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 04:22:22,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1508045801, now seen corresponding path program 7 times [2024-06-28 04:22:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:22,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280280574] [2024-06-28 04:22:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:22,718 INFO 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 04:22:22,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:22,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280280574] [2024-06-28 04:22:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280280574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:22,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:22,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574030237] [2024-06-28 04:22:22,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:22,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:22,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:22,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 262 transitions, 3765 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:22,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:22,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:22,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:23,492 INFO L124 PetriNetUnfolderBase]: 2290/3403 cut-off events. [2024-06-28 04:22:23,492 INFO L125 PetriNetUnfolderBase]: For 105837/105839 co-relation queries the response was YES. [2024-06-28 04:22:23,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27319 conditions, 3403 events. 2290/3403 cut-off events. For 105837/105839 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15918 event pairs, 542 based on Foata normal form. 6/3408 useless extension candidates. Maximal degree in co-relation 27236. Up to 2754 conditions per place. [2024-06-28 04:22:23,532 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 196 selfloop transitions, 96 changer transitions 0/295 dead transitions. [2024-06-28 04:22:23,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 295 transitions, 4652 flow [2024-06-28 04:22:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:22:23,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 04:22:23,533 INFO L175 Difference]: Start difference. First operand has 180 places, 262 transitions, 3765 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:22:23,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 295 transitions, 4652 flow [2024-06-28 04:22:23,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 295 transitions, 4436 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:23,655 INFO L231 Difference]: Finished difference. Result has 183 places, 266 transitions, 3836 flow [2024-06-28 04:22:23,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3836, PETRI_PLACES=183, PETRI_TRANSITIONS=266} [2024-06-28 04:22:23,655 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-28 04:22:23,656 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 266 transitions, 3836 flow [2024-06-28 04:22:23,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:23,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:23,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:23,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:22:23,656 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 04:22:23,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1871658, now seen corresponding path program 3 times [2024-06-28 04:22:23,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:23,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574028976] [2024-06-28 04:22:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:23,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:24,311 INFO 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 04:22:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574028976] [2024-06-28 04:22:24,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574028976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:24,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:24,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:24,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156998471] [2024-06-28 04:22:24,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:24,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:24,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:24,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:24,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 266 transitions, 3836 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:24,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:24,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:24,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:24,969 INFO L124 PetriNetUnfolderBase]: 2333/3468 cut-off events. [2024-06-28 04:22:24,969 INFO L125 PetriNetUnfolderBase]: For 112257/112259 co-relation queries the response was YES. [2024-06-28 04:22:24,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27992 conditions, 3468 events. 2333/3468 cut-off events. For 112257/112259 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16218 event pairs, 503 based on Foata normal form. 4/3468 useless extension candidates. Maximal degree in co-relation 27908. Up to 2683 conditions per place. [2024-06-28 04:22:24,997 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 178 selfloop transitions, 127 changer transitions 0/308 dead transitions. [2024-06-28 04:22:24,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 308 transitions, 4982 flow [2024-06-28 04:22:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:22:24,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 04:22:24,999 INFO L175 Difference]: Start difference. First operand has 183 places, 266 transitions, 3836 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:22:24,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 308 transitions, 4982 flow [2024-06-28 04:22:25,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 308 transitions, 4834 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:25,134 INFO L231 Difference]: Finished difference. Result has 189 places, 279 transitions, 4271 flow [2024-06-28 04:22:25,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4271, PETRI_PLACES=189, PETRI_TRANSITIONS=279} [2024-06-28 04:22:25,134 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-28 04:22:25,134 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 279 transitions, 4271 flow [2024-06-28 04:22:25,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:25,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:25,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:25,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:22:25,135 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:25,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1085805712, now seen corresponding path program 4 times [2024-06-28 04:22:25,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:25,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812597266] [2024-06-28 04:22:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:25,950 INFO 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 04:22:25,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:25,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812597266] [2024-06-28 04:22:25,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812597266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:25,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:25,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:25,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213129579] [2024-06-28 04:22:25,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:25,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:26,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:26,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 279 transitions, 4271 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:26,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:26,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:26,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:26,594 INFO L124 PetriNetUnfolderBase]: 2344/3491 cut-off events. [2024-06-28 04:22:26,594 INFO L125 PetriNetUnfolderBase]: For 124387/124395 co-relation queries the response was YES. [2024-06-28 04:22:26,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29479 conditions, 3491 events. 2344/3491 cut-off events. For 124387/124395 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16509 event pairs, 772 based on Foata normal form. 10/3499 useless extension candidates. Maximal degree in co-relation 29392. Up to 3349 conditions per place. [2024-06-28 04:22:26,626 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 261 selfloop transitions, 40 changer transitions 0/304 dead transitions. [2024-06-28 04:22:26,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 304 transitions, 5009 flow [2024-06-28 04:22:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:22:26,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 04:22:26,628 INFO L175 Difference]: Start difference. First operand has 189 places, 279 transitions, 4271 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:22:26,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 304 transitions, 5009 flow [2024-06-28 04:22:26,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 304 transitions, 4924 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:26,796 INFO L231 Difference]: Finished difference. Result has 195 places, 282 transitions, 4330 flow [2024-06-28 04:22:26,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4330, PETRI_PLACES=195, PETRI_TRANSITIONS=282} [2024-06-28 04:22:26,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2024-06-28 04:22:26,796 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 282 transitions, 4330 flow [2024-06-28 04:22:26,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:26,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:26,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:26,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:22:26,797 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 04:22:26,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1085805495, now seen corresponding path program 8 times [2024-06-28 04:22:26,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:26,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530887866] [2024-06-28 04:22:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:26,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:27,408 INFO 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 04:22:27,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:27,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530887866] [2024-06-28 04:22:27,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530887866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:27,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:27,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:27,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597532267] [2024-06-28 04:22:27,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:27,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:27,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:27,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:27,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:27,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 282 transitions, 4330 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:27,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:27,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:27,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:28,099 INFO L124 PetriNetUnfolderBase]: 2420/3594 cut-off events. [2024-06-28 04:22:28,099 INFO L125 PetriNetUnfolderBase]: For 134127/134129 co-relation queries the response was YES. [2024-06-28 04:22:28,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30765 conditions, 3594 events. 2420/3594 cut-off events. For 134127/134129 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 16944 event pairs, 507 based on Foata normal form. 10/3600 useless extension candidates. Maximal degree in co-relation 30676. Up to 2678 conditions per place. [2024-06-28 04:22:28,134 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 189 selfloop transitions, 132 changer transitions 0/324 dead transitions. [2024-06-28 04:22:28,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 324 transitions, 5579 flow [2024-06-28 04:22:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 04:22:28,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 04:22:28,136 INFO L175 Difference]: Start difference. First operand has 195 places, 282 transitions, 4330 flow. Second operand 8 states and 142 transitions. [2024-06-28 04:22:28,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 324 transitions, 5579 flow [2024-06-28 04:22:28,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 324 transitions, 5469 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:28,293 INFO L231 Difference]: Finished difference. Result has 197 places, 294 transitions, 4754 flow [2024-06-28 04:22:28,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4754, PETRI_PLACES=197, PETRI_TRANSITIONS=294} [2024-06-28 04:22:28,294 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-28 04:22:28,294 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 294 transitions, 4754 flow [2024-06-28 04:22:28,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:28,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:28,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:28,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:22:28,294 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 04:22:28,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash -9236545, now seen corresponding path program 9 times [2024-06-28 04:22:28,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:28,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506438771] [2024-06-28 04:22:28,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:28,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:28,852 INFO 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 04:22:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506438771] [2024-06-28 04:22:28,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506438771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:28,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:28,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:28,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477885409] [2024-06-28 04:22:28,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:28,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:28,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:28,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:28,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:28,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:28,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 294 transitions, 4754 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:28,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:28,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:28,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:29,546 INFO L124 PetriNetUnfolderBase]: 2442/3626 cut-off events. [2024-06-28 04:22:29,546 INFO L125 PetriNetUnfolderBase]: For 144385/144387 co-relation queries the response was YES. [2024-06-28 04:22:29,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32078 conditions, 3626 events. 2442/3626 cut-off events. For 144385/144387 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17095 event pairs, 532 based on Foata normal form. 6/3628 useless extension candidates. Maximal degree in co-relation 31988. Up to 2687 conditions per place. [2024-06-28 04:22:29,584 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 200 selfloop transitions, 126 changer transitions 0/329 dead transitions. [2024-06-28 04:22:29,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 329 transitions, 5975 flow [2024-06-28 04:22:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:22:29,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 04:22:29,585 INFO L175 Difference]: Start difference. First operand has 197 places, 294 transitions, 4754 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:22:29,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 329 transitions, 5975 flow [2024-06-28 04:22:29,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 329 transitions, 5774 flow, removed 62 selfloop flow, removed 3 redundant places. [2024-06-28 04:22:29,749 INFO L231 Difference]: Finished difference. Result has 202 places, 297 transitions, 4888 flow [2024-06-28 04:22:29,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4553, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4888, PETRI_PLACES=202, PETRI_TRANSITIONS=297} [2024-06-28 04:22:29,749 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-28 04:22:29,749 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 297 transitions, 4888 flow [2024-06-28 04:22:29,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:29,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:29,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:29,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:22:29,750 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 04:22:29,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash -9230965, now seen corresponding path program 10 times [2024-06-28 04:22:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:29,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860095523] [2024-06-28 04:22:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:29,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:30,302 INFO 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 04:22:30,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:30,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860095523] [2024-06-28 04:22:30,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860095523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:30,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:30,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:30,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870608655] [2024-06-28 04:22:30,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:30,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:30,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:30,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:30,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:30,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:30,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 297 transitions, 4888 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:30,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:30,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:30,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:31,013 INFO L124 PetriNetUnfolderBase]: 2428/3608 cut-off events. [2024-06-28 04:22:31,013 INFO L125 PetriNetUnfolderBase]: For 146059/146061 co-relation queries the response was YES. [2024-06-28 04:22:31,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31751 conditions, 3608 events. 2428/3608 cut-off events. For 146059/146061 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17026 event pairs, 535 based on Foata normal form. 10/3614 useless extension candidates. Maximal degree in co-relation 31659. Up to 2683 conditions per place. [2024-06-28 04:22:31,049 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 205 selfloop transitions, 121 changer transitions 0/329 dead transitions. [2024-06-28 04:22:31,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 329 transitions, 6046 flow [2024-06-28 04:22:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:22:31,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 04:22:31,050 INFO L175 Difference]: Start difference. First operand has 202 places, 297 transitions, 4888 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:22:31,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 329 transitions, 6046 flow [2024-06-28 04:22:31,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 329 transitions, 5676 flow, removed 84 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:31,233 INFO L231 Difference]: Finished difference. Result has 206 places, 297 transitions, 4772 flow [2024-06-28 04:22:31,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4518, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4772, PETRI_PLACES=206, PETRI_TRANSITIONS=297} [2024-06-28 04:22:31,233 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-28 04:22:31,233 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 297 transitions, 4772 flow [2024-06-28 04:22:31,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:31,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:31,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:31,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:22:31,233 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 04:22:31,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash -9230748, now seen corresponding path program 5 times [2024-06-28 04:22:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:31,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346059050] [2024-06-28 04:22:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:31,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:31,999 INFO 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 04:22:31,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346059050] [2024-06-28 04:22:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346059050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:31,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:31,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:22:31,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663850276] [2024-06-28 04:22:31,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:32,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:22:32,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:32,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:22:32,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:22:32,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:32,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 297 transitions, 4772 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:32,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:32,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:32,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:32,750 INFO L124 PetriNetUnfolderBase]: 2417/3598 cut-off events. [2024-06-28 04:22:32,750 INFO L125 PetriNetUnfolderBase]: For 148699/148707 co-relation queries the response was YES. [2024-06-28 04:22:32,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31290 conditions, 3598 events. 2417/3598 cut-off events. For 148699/148707 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17156 event pairs, 776 based on Foata normal form. 10/3606 useless extension candidates. Maximal degree in co-relation 31197. Up to 3456 conditions per place. [2024-06-28 04:22:32,790 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 280 selfloop transitions, 38 changer transitions 0/321 dead transitions. [2024-06-28 04:22:32,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 321 transitions, 5532 flow [2024-06-28 04:22:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:22:32,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 04:22:32,792 INFO L175 Difference]: Start difference. First operand has 206 places, 297 transitions, 4772 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:22:32,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 321 transitions, 5532 flow [2024-06-28 04:22:32,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 321 transitions, 5253 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:32,994 INFO L231 Difference]: Finished difference. Result has 209 places, 299 transitions, 4619 flow [2024-06-28 04:22:32,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4497, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4619, PETRI_PLACES=209, PETRI_TRANSITIONS=299} [2024-06-28 04:22:32,996 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-28 04:22:32,996 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 299 transitions, 4619 flow [2024-06-28 04:22:32,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:22:32,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:32,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:22:32,996 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 04:22:32,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash 113105976, now seen corresponding path program 1 times [2024-06-28 04:22:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782782639] [2024-06-28 04:22:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:33,710 INFO 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 04:22:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782782639] [2024-06-28 04:22:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782782639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:33,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:33,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205342987] [2024-06-28 04:22:33,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:33,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:33,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:33,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:33,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 299 transitions, 4619 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:33,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:33,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:33,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:34,489 INFO L124 PetriNetUnfolderBase]: 2372/3557 cut-off events. [2024-06-28 04:22:34,490 INFO L125 PetriNetUnfolderBase]: For 169027/169071 co-relation queries the response was YES. [2024-06-28 04:22:34,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31025 conditions, 3557 events. 2372/3557 cut-off events. For 169027/169071 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 17222 event pairs, 517 based on Foata normal form. 13/3487 useless extension candidates. Maximal degree in co-relation 30931. Up to 3148 conditions per place. [2024-06-28 04:22:34,527 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 220 selfloop transitions, 59 changer transitions 0/337 dead transitions. [2024-06-28 04:22:34,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 337 transitions, 5347 flow [2024-06-28 04:22:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:22:34,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:22:34,528 INFO L175 Difference]: Start difference. First operand has 209 places, 299 transitions, 4619 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:22:34,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 337 transitions, 5347 flow [2024-06-28 04:22:34,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 337 transitions, 5241 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:34,739 INFO L231 Difference]: Finished difference. Result has 213 places, 304 transitions, 4710 flow [2024-06-28 04:22:34,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4710, PETRI_PLACES=213, PETRI_TRANSITIONS=304} [2024-06-28 04:22:34,740 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-28 04:22:34,740 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 304 transitions, 4710 flow [2024-06-28 04:22:34,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:34,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:34,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:34,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:22:34,740 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 04:22:34,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1253383342, now seen corresponding path program 2 times [2024-06-28 04:22:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:34,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463129194] [2024-06-28 04:22:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:35,424 INFO 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 04:22:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:35,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463129194] [2024-06-28 04:22:35,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463129194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:35,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:35,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:35,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049295484] [2024-06-28 04:22:35,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:35,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:35,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:35,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:35,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:35,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:35,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 304 transitions, 4710 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:35,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:35,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:35,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:36,252 INFO L124 PetriNetUnfolderBase]: 2423/3646 cut-off events. [2024-06-28 04:22:36,252 INFO L125 PetriNetUnfolderBase]: For 176794/176958 co-relation queries the response was YES. [2024-06-28 04:22:36,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32010 conditions, 3646 events. 2423/3646 cut-off events. For 176794/176958 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17936 event pairs, 669 based on Foata normal form. 25/3581 useless extension candidates. Maximal degree in co-relation 31914. Up to 3253 conditions per place. [2024-06-28 04:22:36,293 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 222 selfloop transitions, 65 changer transitions 0/345 dead transitions. [2024-06-28 04:22:36,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 345 transitions, 5526 flow [2024-06-28 04:22:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 04:22:36,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 04:22:36,295 INFO L175 Difference]: Start difference. First operand has 213 places, 304 transitions, 4710 flow. Second operand 9 states and 155 transitions. [2024-06-28 04:22:36,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 345 transitions, 5526 flow [2024-06-28 04:22:36,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 345 transitions, 5317 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:36,550 INFO L231 Difference]: Finished difference. Result has 216 places, 312 transitions, 4784 flow [2024-06-28 04:22:36,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4784, PETRI_PLACES=216, PETRI_TRANSITIONS=312} [2024-06-28 04:22:36,551 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 175 predicate places. [2024-06-28 04:22:36,551 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 312 transitions, 4784 flow [2024-06-28 04:22:36,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:36,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:36,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:36,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:22:36,552 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:36,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash -495958280, now seen corresponding path program 1 times [2024-06-28 04:22:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:36,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792502884] [2024-06-28 04:22:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:37,276 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 04:22:37,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:37,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792502884] [2024-06-28 04:22:37,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792502884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:37,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:37,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:37,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4965028] [2024-06-28 04:22:37,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:37,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:37,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:37,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:37,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 312 transitions, 4784 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:22:37,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:37,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:37,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:38,103 INFO L124 PetriNetUnfolderBase]: 2568/3838 cut-off events. [2024-06-28 04:22:38,103 INFO L125 PetriNetUnfolderBase]: For 171064/171068 co-relation queries the response was YES. [2024-06-28 04:22:38,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33168 conditions, 3838 events. 2568/3838 cut-off events. For 171064/171068 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18824 event pairs, 719 based on Foata normal form. 6/3843 useless extension candidates. Maximal degree in co-relation 33071. Up to 3617 conditions per place. [2024-06-28 04:22:38,145 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 288 selfloop transitions, 58 changer transitions 0/349 dead transitions. [2024-06-28 04:22:38,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 349 transitions, 5725 flow [2024-06-28 04:22:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:22:38,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 04:22:38,146 INFO L175 Difference]: Start difference. First operand has 216 places, 312 transitions, 4784 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:22:38,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 349 transitions, 5725 flow [2024-06-28 04:22:38,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 349 transitions, 5575 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:38,428 INFO L231 Difference]: Finished difference. Result has 220 places, 317 transitions, 4907 flow [2024-06-28 04:22:38,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4634, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4907, PETRI_PLACES=220, PETRI_TRANSITIONS=317} [2024-06-28 04:22:38,429 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-28 04:22:38,429 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 317 transitions, 4907 flow [2024-06-28 04:22:38,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:22:38,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:38,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:38,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:22:38,432 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:38,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash -495925854, now seen corresponding path program 3 times [2024-06-28 04:22:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:38,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118460807] [2024-06-28 04:22:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:39,138 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 04:22:39,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118460807] [2024-06-28 04:22:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118460807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:39,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:39,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826400202] [2024-06-28 04:22:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:39,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:39,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:39,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:39,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:39,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 317 transitions, 4907 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:39,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:39,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:39,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:39,978 INFO L124 PetriNetUnfolderBase]: 2454/3705 cut-off events. [2024-06-28 04:22:39,978 INFO L125 PetriNetUnfolderBase]: For 198439/198558 co-relation queries the response was YES. [2024-06-28 04:22:40,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33063 conditions, 3705 events. 2454/3705 cut-off events. For 198439/198558 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 18403 event pairs, 647 based on Foata normal form. 18/3634 useless extension candidates. Maximal degree in co-relation 32964. Up to 3287 conditions per place. [2024-06-28 04:22:40,023 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 211 selfloop transitions, 79 changer transitions 0/351 dead transitions. [2024-06-28 04:22:40,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 351 transitions, 5661 flow [2024-06-28 04:22:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 04:22:40,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 04:22:40,024 INFO L175 Difference]: Start difference. First operand has 220 places, 317 transitions, 4907 flow. Second operand 9 states and 155 transitions. [2024-06-28 04:22:40,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 351 transitions, 5661 flow [2024-06-28 04:22:40,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 351 transitions, 5567 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 04:22:40,295 INFO L231 Difference]: Finished difference. Result has 225 places, 319 transitions, 5035 flow [2024-06-28 04:22:40,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4813, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5035, PETRI_PLACES=225, PETRI_TRANSITIONS=319} [2024-06-28 04:22:40,295 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-28 04:22:40,295 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 319 transitions, 5035 flow [2024-06-28 04:22:40,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:40,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:40,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:40,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:22:40,296 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:40,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:40,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1741087454, now seen corresponding path program 4 times [2024-06-28 04:22:40,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:40,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876859608] [2024-06-28 04:22:40,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:40,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:41,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876859608] [2024-06-28 04:22:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876859608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:41,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714360407] [2024-06-28 04:22:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:41,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:41,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:41,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:41,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:41,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 319 transitions, 5035 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:41,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:41,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:41,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:42,047 INFO L124 PetriNetUnfolderBase]: 2522/3813 cut-off events. [2024-06-28 04:22:42,047 INFO L125 PetriNetUnfolderBase]: For 206012/206161 co-relation queries the response was YES. [2024-06-28 04:22:42,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33906 conditions, 3813 events. 2522/3813 cut-off events. For 206012/206161 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 19140 event pairs, 500 based on Foata normal form. 52/3770 useless extension candidates. Maximal degree in co-relation 33806. Up to 3387 conditions per place. [2024-06-28 04:22:42,090 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 235 selfloop transitions, 66 changer transitions 0/362 dead transitions. [2024-06-28 04:22:42,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 362 transitions, 5866 flow [2024-06-28 04:22:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:22:42,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:22:42,091 INFO L175 Difference]: Start difference. First operand has 225 places, 319 transitions, 5035 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:22:42,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 362 transitions, 5866 flow [2024-06-28 04:22:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 362 transitions, 5676 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:42,323 INFO L231 Difference]: Finished difference. Result has 228 places, 331 transitions, 5142 flow [2024-06-28 04:22:42,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4845, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5142, PETRI_PLACES=228, PETRI_TRANSITIONS=331} [2024-06-28 04:22:42,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-28 04:22:42,324 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 331 transitions, 5142 flow [2024-06-28 04:22:42,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:42,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:42,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:42,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:22:42,324 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:42,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1741147904, now seen corresponding path program 5 times [2024-06-28 04:22:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:42,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980752760] [2024-06-28 04:22:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:42,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:43,192 INFO 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 04:22:43,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:43,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980752760] [2024-06-28 04:22:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980752760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:43,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:43,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:43,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690771009] [2024-06-28 04:22:43,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:43,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:43,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:43,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:43,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 331 transitions, 5142 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:43,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:43,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:43,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:44,104 INFO L124 PetriNetUnfolderBase]: 2550/3865 cut-off events. [2024-06-28 04:22:44,105 INFO L125 PetriNetUnfolderBase]: For 218210/218429 co-relation queries the response was YES. [2024-06-28 04:22:44,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34626 conditions, 3865 events. 2550/3865 cut-off events. For 218210/218429 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19578 event pairs, 510 based on Foata normal form. 50/3814 useless extension candidates. Maximal degree in co-relation 34524. Up to 3437 conditions per place. [2024-06-28 04:22:44,147 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 226 selfloop transitions, 78 changer transitions 0/365 dead transitions. [2024-06-28 04:22:44,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 365 transitions, 5928 flow [2024-06-28 04:22:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:22:44,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:22:44,152 INFO L175 Difference]: Start difference. First operand has 228 places, 331 transitions, 5142 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:22:44,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 365 transitions, 5928 flow [2024-06-28 04:22:44,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 365 transitions, 5796 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:44,444 INFO L231 Difference]: Finished difference. Result has 232 places, 335 transitions, 5252 flow [2024-06-28 04:22:44,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5010, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5252, PETRI_PLACES=232, PETRI_TRANSITIONS=335} [2024-06-28 04:22:44,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 04:22:44,445 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 335 transitions, 5252 flow [2024-06-28 04:22:44,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:44,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:44,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:44,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:22:44,446 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:44,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1741148028, now seen corresponding path program 2 times [2024-06-28 04:22:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607116346] [2024-06-28 04:22:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:45,251 INFO 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 04:22:45,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:45,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607116346] [2024-06-28 04:22:45,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607116346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:45,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:45,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158167405] [2024-06-28 04:22:45,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:45,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:45,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:45,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:45,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 335 transitions, 5252 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:22:45,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:45,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:45,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:46,240 INFO L124 PetriNetUnfolderBase]: 2763/4138 cut-off events. [2024-06-28 04:22:46,240 INFO L125 PetriNetUnfolderBase]: For 207148/207154 co-relation queries the response was YES. [2024-06-28 04:22:46,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36151 conditions, 4138 events. 2763/4138 cut-off events. For 207148/207154 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 20800 event pairs, 617 based on Foata normal form. 8/4145 useless extension candidates. Maximal degree in co-relation 36048. Up to 3917 conditions per place. [2024-06-28 04:22:46,280 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 307 selfloop transitions, 61 changer transitions 0/371 dead transitions. [2024-06-28 04:22:46,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 371 transitions, 6229 flow [2024-06-28 04:22:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:22:46,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 04:22:46,281 INFO L175 Difference]: Start difference. First operand has 232 places, 335 transitions, 5252 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:22:46,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 371 transitions, 6229 flow [2024-06-28 04:22:46,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 371 transitions, 6025 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:46,542 INFO L231 Difference]: Finished difference. Result has 235 places, 341 transitions, 5337 flow [2024-06-28 04:22:46,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5337, PETRI_PLACES=235, PETRI_TRANSITIONS=341} [2024-06-28 04:22:46,542 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 04:22:46,543 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 341 transitions, 5337 flow [2024-06-28 04:22:46,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:22:46,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:46,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:46,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:22:46,543 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:46,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1859235584, now seen corresponding path program 6 times [2024-06-28 04:22:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:46,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136466418] [2024-06-28 04:22:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:47,355 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 04:22:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136466418] [2024-06-28 04:22:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136466418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:47,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:47,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:47,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293166264] [2024-06-28 04:22:47,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:47,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:47,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:47,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:47,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 341 transitions, 5337 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:47,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:47,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:47,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:48,337 INFO L124 PetriNetUnfolderBase]: 2572/3895 cut-off events. [2024-06-28 04:22:48,338 INFO L125 PetriNetUnfolderBase]: For 237563/237800 co-relation queries the response was YES. [2024-06-28 04:22:48,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35404 conditions, 3895 events. 2572/3895 cut-off events. For 237563/237800 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19678 event pairs, 503 based on Foata normal form. 48/3841 useless extension candidates. Maximal degree in co-relation 35299. Up to 3421 conditions per place. [2024-06-28 04:22:48,380 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 216 selfloop transitions, 94 changer transitions 0/374 dead transitions. [2024-06-28 04:22:48,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 374 transitions, 6143 flow [2024-06-28 04:22:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:22:48,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:22:48,381 INFO L175 Difference]: Start difference. First operand has 235 places, 341 transitions, 5337 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:22:48,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 374 transitions, 6143 flow [2024-06-28 04:22:48,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 374 transitions, 6039 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 04:22:48,674 INFO L231 Difference]: Finished difference. Result has 239 places, 343 transitions, 5491 flow [2024-06-28 04:22:48,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5233, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5491, PETRI_PLACES=239, PETRI_TRANSITIONS=343} [2024-06-28 04:22:48,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-28 04:22:48,674 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 343 transitions, 5491 flow [2024-06-28 04:22:48,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:48,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:48,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:48,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:22:48,675 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:48,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1859420282, now seen corresponding path program 1 times [2024-06-28 04:22:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439073081] [2024-06-28 04:22:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:49,396 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 04:22:49,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:49,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439073081] [2024-06-28 04:22:49,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439073081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:49,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:49,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:49,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391170142] [2024-06-28 04:22:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:49,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:49,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:49,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 343 transitions, 5491 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:22:49,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:49,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:49,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:50,327 INFO L124 PetriNetUnfolderBase]: 2805/4206 cut-off events. [2024-06-28 04:22:50,327 INFO L125 PetriNetUnfolderBase]: For 229812/229816 co-relation queries the response was YES. [2024-06-28 04:22:50,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37272 conditions, 4206 events. 2805/4206 cut-off events. For 229812/229816 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21263 event pairs, 883 based on Foata normal form. 8/4213 useless extension candidates. Maximal degree in co-relation 37166. Up to 4105 conditions per place. [2024-06-28 04:22:50,371 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 349 selfloop transitions, 26 changer transitions 0/378 dead transitions. [2024-06-28 04:22:50,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 378 transitions, 6409 flow [2024-06-28 04:22:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 04:22:50,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 04:22:50,372 INFO L175 Difference]: Start difference. First operand has 239 places, 343 transitions, 5491 flow. Second operand 10 states and 155 transitions. [2024-06-28 04:22:50,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 378 transitions, 6409 flow [2024-06-28 04:22:50,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 378 transitions, 6171 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:50,679 INFO L231 Difference]: Finished difference. Result has 242 places, 345 transitions, 5350 flow [2024-06-28 04:22:50,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5253, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5350, PETRI_PLACES=242, PETRI_TRANSITIONS=345} [2024-06-28 04:22:50,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-28 04:22:50,680 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 345 transitions, 5350 flow [2024-06-28 04:22:50,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:22:50,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:50,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:50,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:22:50,680 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:50,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash -613372694, now seen corresponding path program 7 times [2024-06-28 04:22:50,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:50,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397837828] [2024-06-28 04:22:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:51,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397837828] [2024-06-28 04:22:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397837828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:51,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169565043] [2024-06-28 04:22:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:51,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:51,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:51,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 345 transitions, 5350 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:51,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:51,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:51,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:52,519 INFO L124 PetriNetUnfolderBase]: 2724/4135 cut-off events. [2024-06-28 04:22:52,519 INFO L125 PetriNetUnfolderBase]: For 263908/264241 co-relation queries the response was YES. [2024-06-28 04:22:52,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37537 conditions, 4135 events. 2724/4135 cut-off events. For 263908/264241 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21281 event pairs, 521 based on Foata normal form. 93/4101 useless extension candidates. Maximal degree in co-relation 37430. Up to 3634 conditions per place. [2024-06-28 04:22:52,568 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 257 selfloop transitions, 89 changer transitions 0/411 dead transitions. [2024-06-28 04:22:52,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 411 transitions, 6814 flow [2024-06-28 04:22:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:22:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:22:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:22:52,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 04:22:52,570 INFO L175 Difference]: Start difference. First operand has 242 places, 345 transitions, 5350 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:22:52,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 411 transitions, 6814 flow [2024-06-28 04:22:52,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 411 transitions, 6731 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 04:22:52,909 INFO L231 Difference]: Finished difference. Result has 245 places, 381 transitions, 6149 flow [2024-06-28 04:22:52,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5271, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6149, PETRI_PLACES=245, PETRI_TRANSITIONS=381} [2024-06-28 04:22:52,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-28 04:22:52,910 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 381 transitions, 6149 flow [2024-06-28 04:22:52,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:52,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:52,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:52,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:22:52,911 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 04:22:52,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash -613312244, now seen corresponding path program 8 times [2024-06-28 04:22:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:52,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838151804] [2024-06-28 04:22:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:53,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838151804] [2024-06-28 04:22:53,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838151804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:53,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:53,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:53,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142958204] [2024-06-28 04:22:53,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:53,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:53,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:53,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:53,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:53,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 381 transitions, 6149 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:53,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:53,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:53,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:54,779 INFO L124 PetriNetUnfolderBase]: 2750/4199 cut-off events. [2024-06-28 04:22:54,780 INFO L125 PetriNetUnfolderBase]: For 288998/289436 co-relation queries the response was YES. [2024-06-28 04:22:54,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38684 conditions, 4199 events. 2750/4199 cut-off events. For 288998/289436 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 22012 event pairs, 684 based on Foata normal form. 79/4158 useless extension candidates. Maximal degree in co-relation 38574. Up to 3572 conditions per place. [2024-06-28 04:22:54,832 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 225 selfloop transitions, 121 changer transitions 0/411 dead transitions. [2024-06-28 04:22:54,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 411 transitions, 7023 flow [2024-06-28 04:22:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:22:54,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 04:22:54,833 INFO L175 Difference]: Start difference. First operand has 245 places, 381 transitions, 6149 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:22:54,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 411 transitions, 7023 flow [2024-06-28 04:22:55,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 411 transitions, 6907 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 04:22:55,211 INFO L231 Difference]: Finished difference. Result has 251 places, 383 transitions, 6373 flow [2024-06-28 04:22:55,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6033, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6373, PETRI_PLACES=251, PETRI_TRANSITIONS=383} [2024-06-28 04:22:55,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-28 04:22:55,211 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 383 transitions, 6373 flow [2024-06-28 04:22:55,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:55,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:55,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:55,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:22:55,212 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 04:22:55,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash -613312120, now seen corresponding path program 3 times [2024-06-28 04:22:55,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:55,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616376096] [2024-06-28 04:22:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:56,002 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 04:22:56,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:56,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616376096] [2024-06-28 04:22:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616376096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:56,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590155420] [2024-06-28 04:22:56,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:56,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:56,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:56,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:22:56,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 383 transitions, 6373 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:22:56,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:56,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:22:56,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:57,101 INFO L124 PetriNetUnfolderBase]: 3021/4544 cut-off events. [2024-06-28 04:22:57,101 INFO L125 PetriNetUnfolderBase]: For 262965/262969 co-relation queries the response was YES. [2024-06-28 04:22:57,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40730 conditions, 4544 events. 3021/4544 cut-off events. For 262965/262969 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 23616 event pairs, 838 based on Foata normal form. 6/4549 useless extension candidates. Maximal degree in co-relation 40618. Up to 4159 conditions per place. [2024-06-28 04:22:57,145 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 318 selfloop transitions, 90 changer transitions 0/411 dead transitions. [2024-06-28 04:22:57,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 411 transitions, 7309 flow [2024-06-28 04:22:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:22:57,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:22:57,146 INFO L175 Difference]: Start difference. First operand has 251 places, 383 transitions, 6373 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:22:57,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 411 transitions, 7309 flow [2024-06-28 04:22:57,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 411 transitions, 7003 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 04:22:57,543 INFO L231 Difference]: Finished difference. Result has 253 places, 383 transitions, 6283 flow [2024-06-28 04:22:57,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6283, PETRI_PLACES=253, PETRI_TRANSITIONS=383} [2024-06-28 04:22:57,544 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-28 04:22:57,544 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 383 transitions, 6283 flow [2024-06-28 04:22:57,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:22:57,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:57,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:57,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:22:57,544 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 04:22:57,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash 572609264, now seen corresponding path program 9 times [2024-06-28 04:22:57,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:57,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093144331] [2024-06-28 04:22:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:57,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:58,356 INFO 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 04:22:58,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:58,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093144331] [2024-06-28 04:22:58,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093144331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:58,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:58,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:58,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047408949] [2024-06-28 04:22:58,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:58,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:58,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:58,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:22:58,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 383 transitions, 6283 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:58,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:58,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:22:58,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:59,300 INFO L124 PetriNetUnfolderBase]: 2749/4180 cut-off events. [2024-06-28 04:22:59,300 INFO L125 PetriNetUnfolderBase]: For 277158/277548 co-relation queries the response was YES. [2024-06-28 04:22:59,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38347 conditions, 4180 events. 2749/4180 cut-off events. For 277158/277548 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21611 event pairs, 512 based on Foata normal form. 77/4128 useless extension candidates. Maximal degree in co-relation 38234. Up to 3548 conditions per place. [2024-06-28 04:22:59,347 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 217 selfloop transitions, 130 changer transitions 0/412 dead transitions. [2024-06-28 04:22:59,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 412 transitions, 7155 flow [2024-06-28 04:22:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:22:59,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:22:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:22:59,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 04:22:59,348 INFO L175 Difference]: Start difference. First operand has 253 places, 383 transitions, 6283 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:22:59,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 412 transitions, 7155 flow [2024-06-28 04:22:59,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 412 transitions, 6902 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:59,731 INFO L231 Difference]: Finished difference. Result has 254 places, 385 transitions, 6368 flow [2024-06-28 04:22:59,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6030, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6368, PETRI_PLACES=254, PETRI_TRANSITIONS=385} [2024-06-28 04:22:59,731 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 04:22:59,731 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 385 transitions, 6368 flow [2024-06-28 04:22:59,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:22:59,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:59,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:59,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:22:59,732 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 04:22:59,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash 572793962, now seen corresponding path program 2 times [2024-06-28 04:22:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:59,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726629303] [2024-06-28 04:22:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:59,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:00,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726629303] [2024-06-28 04:23:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726629303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:00,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:00,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501549503] [2024-06-28 04:23:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:00,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:00,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 385 transitions, 6368 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:00,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:00,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:00,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:01,667 INFO L124 PetriNetUnfolderBase]: 3138/4723 cut-off events. [2024-06-28 04:23:01,667 INFO L125 PetriNetUnfolderBase]: For 266423/266427 co-relation queries the response was YES. [2024-06-28 04:23:01,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41193 conditions, 4723 events. 3138/4723 cut-off events. For 266423/266427 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24609 event pairs, 654 based on Foata normal form. 28/4750 useless extension candidates. Maximal degree in co-relation 41079. Up to 3884 conditions per place. [2024-06-28 04:23:01,724 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 294 selfloop transitions, 126 changer transitions 0/423 dead transitions. [2024-06-28 04:23:01,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 423 transitions, 7434 flow [2024-06-28 04:23:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:23:01,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 04:23:01,725 INFO L175 Difference]: Start difference. First operand has 254 places, 385 transitions, 6368 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:23:01,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 423 transitions, 7434 flow [2024-06-28 04:23:02,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 423 transitions, 7120 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:02,164 INFO L231 Difference]: Finished difference. Result has 257 places, 387 transitions, 6361 flow [2024-06-28 04:23:02,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6361, PETRI_PLACES=257, PETRI_TRANSITIONS=387} [2024-06-28 04:23:02,164 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 04:23:02,164 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 387 transitions, 6361 flow [2024-06-28 04:23:02,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:02,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:02,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:23:02,165 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:02,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash -699767202, now seen corresponding path program 1 times [2024-06-28 04:23:02,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:02,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788285789] [2024-06-28 04:23:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:02,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:02,871 INFO 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 04:23:02,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788285789] [2024-06-28 04:23:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788285789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:02,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:02,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295608388] [2024-06-28 04:23:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:02,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:02,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:02,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:02,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 387 transitions, 6361 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 04:23:02,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:02,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:02,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:03,932 INFO L124 PetriNetUnfolderBase]: 3128/4712 cut-off events. [2024-06-28 04:23:03,933 INFO L125 PetriNetUnfolderBase]: For 243036/243042 co-relation queries the response was YES. [2024-06-28 04:23:03,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40998 conditions, 4712 events. 3128/4712 cut-off events. For 243036/243042 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24612 event pairs, 661 based on Foata normal form. 10/4718 useless extension candidates. Maximal degree in co-relation 40883. Up to 4025 conditions per place. [2024-06-28 04:23:03,988 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 268 selfloop transitions, 143 changer transitions 0/414 dead transitions. [2024-06-28 04:23:03,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 414 transitions, 7314 flow [2024-06-28 04:23:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:23:03,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:23:03,989 INFO L175 Difference]: Start difference. First operand has 257 places, 387 transitions, 6361 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:23:03,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 414 transitions, 7314 flow [2024-06-28 04:23:04,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 414 transitions, 7015 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:04,445 INFO L231 Difference]: Finished difference. Result has 259 places, 387 transitions, 6360 flow [2024-06-28 04:23:04,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6062, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6360, PETRI_PLACES=259, PETRI_TRANSITIONS=387} [2024-06-28 04:23:04,446 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-06-28 04:23:04,446 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 387 transitions, 6360 flow [2024-06-28 04:23:04,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 04:23:04,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:04,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:04,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:23:04,447 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:04,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:04,447 INFO L85 PathProgramCache]: Analyzing trace with hash -699760444, now seen corresponding path program 3 times [2024-06-28 04:23:04,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:04,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767712066] [2024-06-28 04:23:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:04,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:05,275 INFO 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 04:23:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:05,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767712066] [2024-06-28 04:23:05,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767712066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:05,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:05,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:05,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626067132] [2024-06-28 04:23:05,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:05,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:05,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:05,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:05,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 387 transitions, 6360 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:05,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:05,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:05,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:06,261 INFO L124 PetriNetUnfolderBase]: 3145/4744 cut-off events. [2024-06-28 04:23:06,261 INFO L125 PetriNetUnfolderBase]: For 243710/243718 co-relation queries the response was YES. [2024-06-28 04:23:06,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40847 conditions, 4744 events. 3145/4744 cut-off events. For 243710/243718 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24975 event pairs, 996 based on Foata normal form. 12/4754 useless extension candidates. Maximal degree in co-relation 40731. Up to 4566 conditions per place. [2024-06-28 04:23:06,317 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 369 selfloop transitions, 44 changer transitions 0/416 dead transitions. [2024-06-28 04:23:06,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 416 transitions, 7340 flow [2024-06-28 04:23:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 04:23:06,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 04:23:06,319 INFO L175 Difference]: Start difference. First operand has 259 places, 387 transitions, 6360 flow. Second operand 9 states and 140 transitions. [2024-06-28 04:23:06,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 416 transitions, 7340 flow [2024-06-28 04:23:06,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 416 transitions, 7087 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:06,736 INFO L231 Difference]: Finished difference. Result has 262 places, 389 transitions, 6244 flow [2024-06-28 04:23:06,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6107, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6244, PETRI_PLACES=262, PETRI_TRANSITIONS=389} [2024-06-28 04:23:06,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-28 04:23:06,737 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 389 transitions, 6244 flow [2024-06-28 04:23:06,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:06,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:06,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:06,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:23:06,738 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:06,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash -49976976, now seen corresponding path program 4 times [2024-06-28 04:23:06,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:06,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139218878] [2024-06-28 04:23:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:06,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:07,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139218878] [2024-06-28 04:23:07,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139218878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:07,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:07,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:07,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567464390] [2024-06-28 04:23:07,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:07,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:07,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:07,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:07,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:07,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 389 transitions, 6244 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:07,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:07,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:07,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:08,530 INFO L124 PetriNetUnfolderBase]: 3162/4766 cut-off events. [2024-06-28 04:23:08,530 INFO L125 PetriNetUnfolderBase]: For 251486/251492 co-relation queries the response was YES. [2024-06-28 04:23:08,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41040 conditions, 4766 events. 3162/4766 cut-off events. For 251486/251492 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24974 event pairs, 664 based on Foata normal form. 10/4772 useless extension candidates. Maximal degree in co-relation 40923. Up to 3857 conditions per place. [2024-06-28 04:23:08,586 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 258 selfloop transitions, 162 changer transitions 0/423 dead transitions. [2024-06-28 04:23:08,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 423 transitions, 7440 flow [2024-06-28 04:23:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 04:23:08,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 04:23:08,587 INFO L175 Difference]: Start difference. First operand has 262 places, 389 transitions, 6244 flow. Second operand 9 states and 151 transitions. [2024-06-28 04:23:08,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 423 transitions, 7440 flow [2024-06-28 04:23:09,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 423 transitions, 7321 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:09,034 INFO L231 Difference]: Finished difference. Result has 264 places, 391 transitions, 6502 flow [2024-06-28 04:23:09,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6125, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6502, PETRI_PLACES=264, PETRI_TRANSITIONS=391} [2024-06-28 04:23:09,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-28 04:23:09,035 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 391 transitions, 6502 flow [2024-06-28 04:23:09,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:09,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:09,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:09,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:23:09,035 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 04:23:09,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:09,036 INFO L85 PathProgramCache]: Analyzing trace with hash -49680306, now seen corresponding path program 5 times [2024-06-28 04:23:09,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:09,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867537810] [2024-06-28 04:23:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:09,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867537810] [2024-06-28 04:23:09,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867537810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:09,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:09,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:09,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692076861] [2024-06-28 04:23:09,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:09,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:09,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:09,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:09,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 391 transitions, 6502 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:09,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:09,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:09,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:10,886 INFO L124 PetriNetUnfolderBase]: 3290/4974 cut-off events. [2024-06-28 04:23:10,886 INFO L125 PetriNetUnfolderBase]: For 285702/285708 co-relation queries the response was YES. [2024-06-28 04:23:10,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44115 conditions, 4974 events. 3290/4974 cut-off events. For 285702/285708 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 26281 event pairs, 613 based on Foata normal form. 10/4980 useless extension candidates. Maximal degree in co-relation 43997. Up to 3624 conditions per place. [2024-06-28 04:23:10,958 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 258 selfloop transitions, 173 changer transitions 0/434 dead transitions. [2024-06-28 04:23:10,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 434 transitions, 8008 flow [2024-06-28 04:23:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 04:23:10,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 04:23:10,959 INFO L175 Difference]: Start difference. First operand has 264 places, 391 transitions, 6502 flow. Second operand 9 states and 158 transitions. [2024-06-28 04:23:10,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 434 transitions, 8008 flow [2024-06-28 04:23:11,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 434 transitions, 7694 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:11,476 INFO L231 Difference]: Finished difference. Result has 267 places, 395 transitions, 6637 flow [2024-06-28 04:23:11,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6188, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6637, PETRI_PLACES=267, PETRI_TRANSITIONS=395} [2024-06-28 04:23:11,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-28 04:23:11,477 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 395 transitions, 6637 flow [2024-06-28 04:23:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:11,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:11,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:11,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:23:11,478 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:11,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash -286159094, now seen corresponding path program 2 times [2024-06-28 04:23:11,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:11,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990990817] [2024-06-28 04:23:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:12,154 INFO 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 04:23:12,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:12,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990990817] [2024-06-28 04:23:12,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990990817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:12,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:12,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:23:12,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414237468] [2024-06-28 04:23:12,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:12,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:23:12,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:23:12,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:23:12,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:12,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 395 transitions, 6637 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 04:23:12,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:12,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:12,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:13,219 INFO L124 PetriNetUnfolderBase]: 3280/4960 cut-off events. [2024-06-28 04:23:13,219 INFO L125 PetriNetUnfolderBase]: For 293076/293082 co-relation queries the response was YES. [2024-06-28 04:23:13,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44442 conditions, 4960 events. 3280/4960 cut-off events. For 293076/293082 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26287 event pairs, 720 based on Foata normal form. 10/4966 useless extension candidates. Maximal degree in co-relation 44323. Up to 4263 conditions per place. [2024-06-28 04:23:13,283 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 291 selfloop transitions, 127 changer transitions 0/421 dead transitions. [2024-06-28 04:23:13,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 421 transitions, 7593 flow [2024-06-28 04:23:13,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:23:13,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 04:23:13,284 INFO L175 Difference]: Start difference. First operand has 267 places, 395 transitions, 6637 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:23:13,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 421 transitions, 7593 flow [2024-06-28 04:23:13,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 421 transitions, 7298 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:13,857 INFO L231 Difference]: Finished difference. Result has 270 places, 395 transitions, 6609 flow [2024-06-28 04:23:13,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6342, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6609, PETRI_PLACES=270, PETRI_TRANSITIONS=395} [2024-06-28 04:23:13,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-28 04:23:13,858 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 395 transitions, 6609 flow [2024-06-28 04:23:13,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 04:23:13,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:13,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:13,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:23:13,858 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:13,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:13,860 INFO L85 PathProgramCache]: Analyzing trace with hash -286337034, now seen corresponding path program 10 times [2024-06-28 04:23:13,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:13,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898125324] [2024-06-28 04:23:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:13,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:14,732 INFO 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 04:23:14,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898125324] [2024-06-28 04:23:14,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898125324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:14,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:14,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:14,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263003497] [2024-06-28 04:23:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:14,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:14,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:14,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:23:14,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 395 transitions, 6609 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:23:14,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:14,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:23:14,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:15,702 INFO L124 PetriNetUnfolderBase]: 2945/4523 cut-off events. [2024-06-28 04:23:15,702 INFO L125 PetriNetUnfolderBase]: For 317845/318245 co-relation queries the response was YES. [2024-06-28 04:23:15,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41591 conditions, 4523 events. 2945/4523 cut-off events. For 317845/318245 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24159 event pairs, 563 based on Foata normal form. 77/4463 useless extension candidates. Maximal degree in co-relation 41470. Up to 3831 conditions per place. [2024-06-28 04:23:15,757 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 216 selfloop transitions, 136 changer transitions 0/422 dead transitions. [2024-06-28 04:23:15,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 422 transitions, 7485 flow [2024-06-28 04:23:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:23:15,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 04:23:15,759 INFO L175 Difference]: Start difference. First operand has 270 places, 395 transitions, 6609 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:23:15,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 422 transitions, 7485 flow [2024-06-28 04:23:16,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 422 transitions, 7037 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 04:23:16,229 INFO L231 Difference]: Finished difference. Result has 268 places, 397 transitions, 6507 flow [2024-06-28 04:23:16,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6161, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6507, PETRI_PLACES=268, PETRI_TRANSITIONS=397} [2024-06-28 04:23:16,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-28 04:23:16,229 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 397 transitions, 6507 flow [2024-06-28 04:23:16,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 04:23:16,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:16,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:16,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:23:16,230 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:16,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:16,230 INFO L85 PathProgramCache]: Analyzing trace with hash -286152336, now seen corresponding path program 6 times [2024-06-28 04:23:16,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:16,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395538384] [2024-06-28 04:23:16,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:16,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:17,023 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 04:23:17,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:17,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395538384] [2024-06-28 04:23:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395538384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:17,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:17,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019929136] [2024-06-28 04:23:17,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:17,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:17,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:17,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 397 transitions, 6507 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:17,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:17,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:17,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:18,047 INFO L124 PetriNetUnfolderBase]: 3259/4934 cut-off events. [2024-06-28 04:23:18,047 INFO L125 PetriNetUnfolderBase]: For 284811/284819 co-relation queries the response was YES. [2024-06-28 04:23:18,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43315 conditions, 4934 events. 3259/4934 cut-off events. For 284811/284819 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26259 event pairs, 1034 based on Foata normal form. 12/4944 useless extension candidates. Maximal degree in co-relation 43193. Up to 4756 conditions per place. [2024-06-28 04:23:18,111 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 380 selfloop transitions, 42 changer transitions 0/425 dead transitions. [2024-06-28 04:23:18,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 425 transitions, 7489 flow [2024-06-28 04:23:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 04:23:18,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 04:23:18,112 INFO L175 Difference]: Start difference. First operand has 268 places, 397 transitions, 6507 flow. Second operand 9 states and 141 transitions. [2024-06-28 04:23:18,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 425 transitions, 7489 flow [2024-06-28 04:23:18,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 425 transitions, 7163 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:18,615 INFO L231 Difference]: Finished difference. Result has 271 places, 398 transitions, 6296 flow [2024-06-28 04:23:18,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6181, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6296, PETRI_PLACES=271, PETRI_TRANSITIONS=398} [2024-06-28 04:23:18,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-28 04:23:18,616 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 398 transitions, 6296 flow [2024-06-28 04:23:18,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 04:23:18,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:18,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:18,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:23:18,616 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:18,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash -788681250, now seen corresponding path program 1 times [2024-06-28 04:23:18,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:18,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656952529] [2024-06-28 04:23:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:19,415 INFO 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 04:23:19,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:19,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656952529] [2024-06-28 04:23:19,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656952529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:19,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:19,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076939428] [2024-06-28 04:23:19,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:19,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:19,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 398 transitions, 6296 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:19,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:19,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:19,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:20,602 INFO L124 PetriNetUnfolderBase]: 3276/4961 cut-off events. [2024-06-28 04:23:20,603 INFO L125 PetriNetUnfolderBase]: For 292039/292045 co-relation queries the response was YES. [2024-06-28 04:23:20,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43224 conditions, 4961 events. 3276/4961 cut-off events. For 292039/292045 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26467 event pairs, 642 based on Foata normal form. 10/4970 useless extension candidates. Maximal degree in co-relation 43101. Up to 4558 conditions per place. [2024-06-28 04:23:20,670 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 389 selfloop transitions, 63 changer transitions 0/455 dead transitions. [2024-06-28 04:23:20,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 455 transitions, 7628 flow [2024-06-28 04:23:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 04:23:20,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-28 04:23:20,672 INFO L175 Difference]: Start difference. First operand has 271 places, 398 transitions, 6296 flow. Second operand 10 states and 159 transitions. [2024-06-28 04:23:20,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 455 transitions, 7628 flow [2024-06-28 04:23:21,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 455 transitions, 7509 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:21,196 INFO L231 Difference]: Finished difference. Result has 277 places, 417 transitions, 6659 flow [2024-06-28 04:23:21,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6177, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6659, PETRI_PLACES=277, PETRI_TRANSITIONS=417} [2024-06-28 04:23:21,196 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-28 04:23:21,197 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 417 transitions, 6659 flow [2024-06-28 04:23:21,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:21,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:21,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:23:21,197 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:21,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1748076050, now seen corresponding path program 2 times [2024-06-28 04:23:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929590065] [2024-06-28 04:23:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:21,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:21,965 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 04:23:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929590065] [2024-06-28 04:23:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929590065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:21,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:21,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012310338] [2024-06-28 04:23:21,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:21,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:21,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:21,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:22,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:22,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 417 transitions, 6659 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:22,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:22,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:22,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:23,189 INFO L124 PetriNetUnfolderBase]: 3304/4999 cut-off events. [2024-06-28 04:23:23,189 INFO L125 PetriNetUnfolderBase]: For 302156/302162 co-relation queries the response was YES. [2024-06-28 04:23:23,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44288 conditions, 4999 events. 3304/4999 cut-off events. For 302156/302162 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 26681 event pairs, 870 based on Foata normal form. 10/5008 useless extension candidates. Maximal degree in co-relation 44161. Up to 4687 conditions per place. [2024-06-28 04:23:23,254 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 399 selfloop transitions, 64 changer transitions 0/466 dead transitions. [2024-06-28 04:23:23,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 466 transitions, 7969 flow [2024-06-28 04:23:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 04:23:23,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 04:23:23,255 INFO L175 Difference]: Start difference. First operand has 277 places, 417 transitions, 6659 flow. Second operand 10 states and 161 transitions. [2024-06-28 04:23:23,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 466 transitions, 7969 flow [2024-06-28 04:23:23,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 466 transitions, 7704 flow, removed 108 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:23,907 INFO L231 Difference]: Finished difference. Result has 285 places, 428 transitions, 6810 flow [2024-06-28 04:23:23,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6502, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6810, PETRI_PLACES=285, PETRI_TRANSITIONS=428} [2024-06-28 04:23:23,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-28 04:23:23,907 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 428 transitions, 6810 flow [2024-06-28 04:23:23,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:23,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:23,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:23,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:23:23,908 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:23,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash 257262128, now seen corresponding path program 3 times [2024-06-28 04:23:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:23,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074275033] [2024-06-28 04:23:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:24,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:24,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074275033] [2024-06-28 04:23:24,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074275033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:24,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:24,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:24,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097228374] [2024-06-28 04:23:24,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:24,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:24,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:24,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:24,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:24,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 428 transitions, 6810 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:24,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:24,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:24,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:26,072 INFO L124 PetriNetUnfolderBase]: 3346/5071 cut-off events. [2024-06-28 04:23:26,073 INFO L125 PetriNetUnfolderBase]: For 315740/315744 co-relation queries the response was YES. [2024-06-28 04:23:26,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45012 conditions, 5071 events. 3346/5071 cut-off events. For 315740/315744 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 27178 event pairs, 881 based on Foata normal form. 8/5078 useless extension candidates. Maximal degree in co-relation 44881. Up to 4714 conditions per place. [2024-06-28 04:23:26,236 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 396 selfloop transitions, 74 changer transitions 0/473 dead transitions. [2024-06-28 04:23:26,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 473 transitions, 8222 flow [2024-06-28 04:23:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 04:23:26,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:23:26,241 INFO L175 Difference]: Start difference. First operand has 285 places, 428 transitions, 6810 flow. Second operand 10 states and 165 transitions. [2024-06-28 04:23:26,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 473 transitions, 8222 flow [2024-06-28 04:23:26,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 473 transitions, 8116 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:26,729 INFO L231 Difference]: Finished difference. Result has 292 places, 434 transitions, 7004 flow [2024-06-28 04:23:26,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6704, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7004, PETRI_PLACES=292, PETRI_TRANSITIONS=434} [2024-06-28 04:23:26,730 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 04:23:26,730 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 434 transitions, 7004 flow [2024-06-28 04:23:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:26,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:26,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:26,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:23:26,730 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:26,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash 746093120, now seen corresponding path program 4 times [2024-06-28 04:23:26,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:26,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204997693] [2024-06-28 04:23:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:26,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:27,523 INFO 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 04:23:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204997693] [2024-06-28 04:23:27,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204997693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:27,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:27,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:27,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637597859] [2024-06-28 04:23:27,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:27,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:27,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:27,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:27,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:27,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 434 transitions, 7004 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:27,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:27,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:27,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:28,792 INFO L124 PetriNetUnfolderBase]: 3338/5063 cut-off events. [2024-06-28 04:23:28,792 INFO L125 PetriNetUnfolderBase]: For 322570/322574 co-relation queries the response was YES. [2024-06-28 04:23:28,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45155 conditions, 5063 events. 3338/5063 cut-off events. For 322570/322574 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 27195 event pairs, 896 based on Foata normal form. 8/5070 useless extension candidates. Maximal degree in co-relation 45021. Up to 4773 conditions per place. [2024-06-28 04:23:28,855 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 395 selfloop transitions, 74 changer transitions 0/472 dead transitions. [2024-06-28 04:23:28,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 472 transitions, 8125 flow [2024-06-28 04:23:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:23:28,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 04:23:28,856 INFO L175 Difference]: Start difference. First operand has 292 places, 434 transitions, 7004 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:23:28,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 472 transitions, 8125 flow [2024-06-28 04:23:29,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 472 transitions, 7912 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:29,500 INFO L231 Difference]: Finished difference. Result has 296 places, 435 transitions, 6982 flow [2024-06-28 04:23:29,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6982, PETRI_PLACES=296, PETRI_TRANSITIONS=435} [2024-06-28 04:23:29,501 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-28 04:23:29,501 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 435 transitions, 6982 flow [2024-06-28 04:23:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:29,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:29,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:29,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:23:29,502 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 04:23:29,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1860862984, now seen corresponding path program 5 times [2024-06-28 04:23:29,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:29,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908154947] [2024-06-28 04:23:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:30,319 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 04:23:30,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:30,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908154947] [2024-06-28 04:23:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908154947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:30,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079028238] [2024-06-28 04:23:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:30,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:30,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:30,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:30,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 435 transitions, 6982 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:30,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:30,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:30,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:31,593 INFO L124 PetriNetUnfolderBase]: 3377/5112 cut-off events. [2024-06-28 04:23:31,593 INFO L125 PetriNetUnfolderBase]: For 331591/331599 co-relation queries the response was YES. [2024-06-28 04:23:31,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45539 conditions, 5112 events. 3377/5112 cut-off events. For 331591/331599 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 27416 event pairs, 657 based on Foata normal form. 12/5123 useless extension candidates. Maximal degree in co-relation 45403. Up to 4795 conditions per place. [2024-06-28 04:23:31,667 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 416 selfloop transitions, 66 changer transitions 0/485 dead transitions. [2024-06-28 04:23:31,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 485 transitions, 8253 flow [2024-06-28 04:23:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:23:31,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 04:23:31,668 INFO L175 Difference]: Start difference. First operand has 296 places, 435 transitions, 6982 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:23:31,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 485 transitions, 8253 flow [2024-06-28 04:23:32,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 485 transitions, 8111 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:32,345 INFO L231 Difference]: Finished difference. Result has 300 places, 449 transitions, 7205 flow [2024-06-28 04:23:32,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6840, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7205, PETRI_PLACES=300, PETRI_TRANSITIONS=449} [2024-06-28 04:23:32,346 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-28 04:23:32,346 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 449 transitions, 7205 flow [2024-06-28 04:23:32,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:32,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:32,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:32,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:23:32,346 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 04:23:32,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:32,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1858985314, now seen corresponding path program 6 times [2024-06-28 04:23:32,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:32,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752375133] [2024-06-28 04:23:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:32,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:33,274 INFO 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 04:23:33,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752375133] [2024-06-28 04:23:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752375133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:33,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:33,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682334648] [2024-06-28 04:23:33,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:33,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:33,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:33,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:33,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:33,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 449 transitions, 7205 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:33,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:33,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:33,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:34,562 INFO L124 PetriNetUnfolderBase]: 3405/5158 cut-off events. [2024-06-28 04:23:34,562 INFO L125 PetriNetUnfolderBase]: For 344706/344714 co-relation queries the response was YES. [2024-06-28 04:23:34,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46457 conditions, 5158 events. 3405/5158 cut-off events. For 344706/344714 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27654 event pairs, 701 based on Foata normal form. 12/5169 useless extension candidates. Maximal degree in co-relation 46318. Up to 4871 conditions per place. [2024-06-28 04:23:34,636 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 411 selfloop transitions, 74 changer transitions 0/488 dead transitions. [2024-06-28 04:23:34,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 488 transitions, 8391 flow [2024-06-28 04:23:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 04:23:34,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-28 04:23:34,637 INFO L175 Difference]: Start difference. First operand has 300 places, 449 transitions, 7205 flow. Second operand 10 states and 163 transitions. [2024-06-28 04:23:34,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 488 transitions, 8391 flow [2024-06-28 04:23:35,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 488 transitions, 8283 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 04:23:35,369 INFO L231 Difference]: Finished difference. Result has 306 places, 453 transitions, 7341 flow [2024-06-28 04:23:35,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7097, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7341, PETRI_PLACES=306, PETRI_TRANSITIONS=453} [2024-06-28 04:23:35,370 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-28 04:23:35,370 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 453 transitions, 7341 flow [2024-06-28 04:23:35,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:35,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:35,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:35,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:23:35,370 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:35,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1858989034, now seen corresponding path program 7 times [2024-06-28 04:23:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:35,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110849465] [2024-06-28 04:23:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:35,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:36,276 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 04:23:36,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:36,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110849465] [2024-06-28 04:23:36,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110849465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:36,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:36,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803431209] [2024-06-28 04:23:36,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:36,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:36,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:36,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 453 transitions, 7341 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:36,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:36,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:36,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:37,665 INFO L124 PetriNetUnfolderBase]: 3433/5200 cut-off events. [2024-06-28 04:23:37,665 INFO L125 PetriNetUnfolderBase]: For 357999/358007 co-relation queries the response was YES. [2024-06-28 04:23:37,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47213 conditions, 5200 events. 3433/5200 cut-off events. For 357999/358007 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 27942 event pairs, 697 based on Foata normal form. 12/5211 useless extension candidates. Maximal degree in co-relation 47072. Up to 4843 conditions per place. [2024-06-28 04:23:37,849 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 414 selfloop transitions, 78 changer transitions 0/495 dead transitions. [2024-06-28 04:23:37,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 495 transitions, 8586 flow [2024-06-28 04:23:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 04:23:37,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 04:23:37,850 INFO L175 Difference]: Start difference. First operand has 306 places, 453 transitions, 7341 flow. Second operand 10 states and 164 transitions. [2024-06-28 04:23:37,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 495 transitions, 8586 flow [2024-06-28 04:23:38,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 495 transitions, 8408 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:38,456 INFO L231 Difference]: Finished difference. Result has 310 places, 460 transitions, 7482 flow [2024-06-28 04:23:38,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7163, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7482, PETRI_PLACES=310, PETRI_TRANSITIONS=460} [2024-06-28 04:23:38,457 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-28 04:23:38,457 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 460 transitions, 7482 flow [2024-06-28 04:23:38,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:38,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:38,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:38,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:23:38,457 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:38,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash -911659404, now seen corresponding path program 8 times [2024-06-28 04:23:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:38,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740702606] [2024-06-28 04:23:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:38,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:39,290 INFO 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 04:23:39,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740702606] [2024-06-28 04:23:39,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740702606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:39,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:39,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046509956] [2024-06-28 04:23:39,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:39,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:39,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:39,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:39,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:39,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:39,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 460 transitions, 7482 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:39,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:39,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:39,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:40,720 INFO L124 PetriNetUnfolderBase]: 3450/5228 cut-off events. [2024-06-28 04:23:40,720 INFO L125 PetriNetUnfolderBase]: For 373211/373219 co-relation queries the response was YES. [2024-06-28 04:23:40,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47851 conditions, 5228 events. 3450/5228 cut-off events. For 373211/373219 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 28090 event pairs, 687 based on Foata normal form. 12/5239 useless extension candidates. Maximal degree in co-relation 47708. Up to 4716 conditions per place. [2024-06-28 04:23:40,794 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 403 selfloop transitions, 92 changer transitions 0/498 dead transitions. [2024-06-28 04:23:40,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 498 transitions, 8694 flow [2024-06-28 04:23:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 04:23:40,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-28 04:23:40,795 INFO L175 Difference]: Start difference. First operand has 310 places, 460 transitions, 7482 flow. Second operand 10 states and 167 transitions. [2024-06-28 04:23:40,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 498 transitions, 8694 flow [2024-06-28 04:23:41,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 498 transitions, 8506 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:41,531 INFO L231 Difference]: Finished difference. Result has 313 places, 462 transitions, 7559 flow [2024-06-28 04:23:41,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7294, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7559, PETRI_PLACES=313, PETRI_TRANSITIONS=462} [2024-06-28 04:23:41,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 04:23:41,531 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 462 transitions, 7559 flow [2024-06-28 04:23:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:41,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:41,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:41,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:23:41,532 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:41,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:41,532 INFO L85 PathProgramCache]: Analyzing trace with hash 253831724, now seen corresponding path program 9 times [2024-06-28 04:23:41,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:41,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026402401] [2024-06-28 04:23:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:42,352 INFO 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 04:23:42,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026402401] [2024-06-28 04:23:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026402401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:42,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:42,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:42,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800660459] [2024-06-28 04:23:42,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:42,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:42,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:42,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:42,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:42,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 462 transitions, 7559 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:42,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:42,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:42,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:43,923 INFO L124 PetriNetUnfolderBase]: 3603/5474 cut-off events. [2024-06-28 04:23:43,924 INFO L125 PetriNetUnfolderBase]: For 425879/425887 co-relation queries the response was YES. [2024-06-28 04:23:43,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51598 conditions, 5474 events. 3603/5474 cut-off events. For 425879/425887 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29802 event pairs, 734 based on Foata normal form. 12/5485 useless extension candidates. Maximal degree in co-relation 51453. Up to 4732 conditions per place. [2024-06-28 04:23:43,998 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 410 selfloop transitions, 96 changer transitions 0/509 dead transitions. [2024-06-28 04:23:43,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 509 transitions, 9145 flow [2024-06-28 04:23:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:23:43,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 04:23:43,999 INFO L175 Difference]: Start difference. First operand has 313 places, 462 transitions, 7559 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:23:43,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 509 transitions, 9145 flow [2024-06-28 04:23:44,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 509 transitions, 8898 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 04:23:44,817 INFO L231 Difference]: Finished difference. Result has 316 places, 467 transitions, 7681 flow [2024-06-28 04:23:44,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7312, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7681, PETRI_PLACES=316, PETRI_TRANSITIONS=467} [2024-06-28 04:23:44,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-28 04:23:44,817 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 467 transitions, 7681 flow [2024-06-28 04:23:44,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:44,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:44,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:44,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:23:44,818 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:44,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash -905945112, now seen corresponding path program 1 times [2024-06-28 04:23:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:44,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207261040] [2024-06-28 04:23:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:44,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:45,478 INFO 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 04:23:45,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:45,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207261040] [2024-06-28 04:23:45,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207261040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:45,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:45,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081880072] [2024-06-28 04:23:45,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:45,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:45,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:45,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:45,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:45,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 467 transitions, 7681 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:45,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:45,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:45,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:46,828 INFO L124 PetriNetUnfolderBase]: 3559/5406 cut-off events. [2024-06-28 04:23:46,828 INFO L125 PetriNetUnfolderBase]: For 432806/432814 co-relation queries the response was YES. [2024-06-28 04:23:46,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50054 conditions, 5406 events. 3559/5406 cut-off events. For 432806/432814 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 29330 event pairs, 703 based on Foata normal form. 32/5437 useless extension candidates. Maximal degree in co-relation 49907. Up to 4775 conditions per place. [2024-06-28 04:23:46,909 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 408 selfloop transitions, 97 changer transitions 0/508 dead transitions. [2024-06-28 04:23:46,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 508 transitions, 8932 flow [2024-06-28 04:23:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 04:23:46,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:23:46,910 INFO L175 Difference]: Start difference. First operand has 316 places, 467 transitions, 7681 flow. Second operand 10 states and 170 transitions. [2024-06-28 04:23:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 508 transitions, 8932 flow [2024-06-28 04:23:47,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 508 transitions, 8673 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:47,809 INFO L231 Difference]: Finished difference. Result has 320 places, 468 transitions, 7668 flow [2024-06-28 04:23:47,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7446, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7668, PETRI_PLACES=320, PETRI_TRANSITIONS=468} [2024-06-28 04:23:47,809 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-28 04:23:47,809 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 468 transitions, 7668 flow [2024-06-28 04:23:47,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:47,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:47,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:47,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:23:47,810 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:47,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:47,810 INFO L85 PathProgramCache]: Analyzing trace with hash -905937672, now seen corresponding path program 2 times [2024-06-28 04:23:47,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:47,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751636863] [2024-06-28 04:23:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:47,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:48,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751636863] [2024-06-28 04:23:48,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751636863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:48,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:48,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:23:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150245470] [2024-06-28 04:23:48,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:48,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:23:48,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:23:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:23:48,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:48,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 468 transitions, 7668 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:48,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:48,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:48,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:49,893 INFO L124 PetriNetUnfolderBase]: 3753/5732 cut-off events. [2024-06-28 04:23:49,894 INFO L125 PetriNetUnfolderBase]: For 451979/451987 co-relation queries the response was YES. [2024-06-28 04:23:49,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52623 conditions, 5732 events. 3753/5732 cut-off events. For 451979/451987 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 31823 event pairs, 736 based on Foata normal form. 24/5755 useless extension candidates. Maximal degree in co-relation 52474. Up to 4663 conditions per place. [2024-06-28 04:23:49,975 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 411 selfloop transitions, 102 changer transitions 0/516 dead transitions. [2024-06-28 04:23:49,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 516 transitions, 9254 flow [2024-06-28 04:23:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:23:49,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 04:23:49,976 INFO L175 Difference]: Start difference. First operand has 320 places, 468 transitions, 7668 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:23:49,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 516 transitions, 9254 flow [2024-06-28 04:23:50,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 516 transitions, 9096 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 04:23:50,921 INFO L231 Difference]: Finished difference. Result has 324 places, 471 transitions, 7844 flow [2024-06-28 04:23:50,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7510, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7844, PETRI_PLACES=324, PETRI_TRANSITIONS=471} [2024-06-28 04:23:50,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-28 04:23:50,921 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 471 transitions, 7844 flow [2024-06-28 04:23:50,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:50,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:50,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:23:50,922 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 04:23:50,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1073613691, now seen corresponding path program 1 times [2024-06-28 04:23:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:50,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926424459] [2024-06-28 04:23:50,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:50,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:51,410 INFO 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 04:23:51,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:51,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926424459] [2024-06-28 04:23:51,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926424459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:51,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:51,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:23:51,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596380261] [2024-06-28 04:23:51,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:51,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:23:51,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:23:51,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:23:51,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:51,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 471 transitions, 7844 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:51,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:51,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:51,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:52,809 INFO L124 PetriNetUnfolderBase]: 3763/5750 cut-off events. [2024-06-28 04:23:52,809 INFO L125 PetriNetUnfolderBase]: For 446961/446965 co-relation queries the response was YES. [2024-06-28 04:23:52,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53218 conditions, 5750 events. 3763/5750 cut-off events. For 446961/446965 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32183 event pairs, 1140 based on Foata normal form. 6/5755 useless extension candidates. Maximal degree in co-relation 53067. Up to 5646 conditions per place. [2024-06-28 04:23:52,889 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 459 selfloop transitions, 36 changer transitions 0/498 dead transitions. [2024-06-28 04:23:52,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 498 transitions, 9108 flow [2024-06-28 04:23:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:23:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:23:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:23:52,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:23:52,890 INFO L175 Difference]: Start difference. First operand has 324 places, 471 transitions, 7844 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:23:52,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 498 transitions, 9108 flow [2024-06-28 04:23:53,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 498 transitions, 8947 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 04:23:53,925 INFO L231 Difference]: Finished difference. Result has 326 places, 477 transitions, 7852 flow [2024-06-28 04:23:53,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7683, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7852, PETRI_PLACES=326, PETRI_TRANSITIONS=477} [2024-06-28 04:23:53,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-28 04:23:53,926 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 477 transitions, 7852 flow [2024-06-28 04:23:53,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:53,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:53,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:23:53,926 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:53,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1203394056, now seen corresponding path program 10 times [2024-06-28 04:23:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:53,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500460265] [2024-06-28 04:23:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:23:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500460265] [2024-06-28 04:23:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500460265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:54,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:54,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:54,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264677922] [2024-06-28 04:23:54,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:54,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:54,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:54,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 477 transitions, 7852 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:54,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:54,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:54,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:56,199 INFO L124 PetriNetUnfolderBase]: 3780/5775 cut-off events. [2024-06-28 04:23:56,199 INFO L125 PetriNetUnfolderBase]: For 463473/463481 co-relation queries the response was YES. [2024-06-28 04:23:56,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53649 conditions, 5775 events. 3780/5775 cut-off events. For 463473/463481 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32188 event pairs, 789 based on Foata normal form. 12/5786 useless extension candidates. Maximal degree in co-relation 53496. Up to 5162 conditions per place. [2024-06-28 04:23:56,281 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 421 selfloop transitions, 90 changer transitions 0/514 dead transitions. [2024-06-28 04:23:56,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 514 transitions, 9138 flow [2024-06-28 04:23:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:23:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:23:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 04:23:56,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:23:56,283 INFO L175 Difference]: Start difference. First operand has 326 places, 477 transitions, 7852 flow. Second operand 9 states and 144 transitions. [2024-06-28 04:23:56,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 514 transitions, 9138 flow [2024-06-28 04:23:57,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 514 transitions, 9055 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:23:57,319 INFO L231 Difference]: Finished difference. Result has 331 places, 481 transitions, 8142 flow [2024-06-28 04:23:57,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7769, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8142, PETRI_PLACES=331, PETRI_TRANSITIONS=481} [2024-06-28 04:23:57,319 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-28 04:23:57,320 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 481 transitions, 8142 flow [2024-06-28 04:23:57,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:57,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:23:57,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:23:57,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:23:57,320 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:23:57,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:23:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1749688980, now seen corresponding path program 11 times [2024-06-28 04:23:57,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:23:57,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833963174] [2024-06-28 04:23:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:23:57,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:23:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:23:58,276 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 04:23:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:23:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833963174] [2024-06-28 04:23:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833963174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:23:58,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:23:58,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:23:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721292338] [2024-06-28 04:23:58,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:23:58,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:23:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:23:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:23:58,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:23:58,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:23:58,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 481 transitions, 8142 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:23:58,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:23:58,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:23:58,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:23:59,786 INFO L124 PetriNetUnfolderBase]: 3903/5956 cut-off events. [2024-06-28 04:23:59,786 INFO L125 PetriNetUnfolderBase]: For 479342/479350 co-relation queries the response was YES. [2024-06-28 04:23:59,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56790 conditions, 5956 events. 3903/5956 cut-off events. For 479342/479350 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 33326 event pairs, 804 based on Foata normal form. 12/5964 useless extension candidates. Maximal degree in co-relation 56635. Up to 5629 conditions per place. [2024-06-28 04:23:59,876 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 455 selfloop transitions, 90 changer transitions 0/548 dead transitions. [2024-06-28 04:23:59,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 548 transitions, 10373 flow [2024-06-28 04:23:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:23:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:23:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 04:23:59,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-28 04:23:59,877 INFO L175 Difference]: Start difference. First operand has 331 places, 481 transitions, 8142 flow. Second operand 10 states and 156 transitions. [2024-06-28 04:23:59,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 548 transitions, 10373 flow [2024-06-28 04:24:01,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 548 transitions, 10161 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 04:24:01,127 INFO L231 Difference]: Finished difference. Result has 338 places, 516 transitions, 9223 flow [2024-06-28 04:24:01,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7947, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9223, PETRI_PLACES=338, PETRI_TRANSITIONS=516} [2024-06-28 04:24:01,128 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-28 04:24:01,128 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 516 transitions, 9223 flow [2024-06-28 04:24:01,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:01,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:01,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:01,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:24:01,129 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:01,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1832809590, now seen corresponding path program 12 times [2024-06-28 04:24:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673263928] [2024-06-28 04:24:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:01,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:02,032 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 04:24:02,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:02,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673263928] [2024-06-28 04:24:02,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673263928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:02,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:02,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910971736] [2024-06-28 04:24:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:02,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:02,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:02,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 516 transitions, 9223 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:02,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:02,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:02,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:03,567 INFO L124 PetriNetUnfolderBase]: 3920/5991 cut-off events. [2024-06-28 04:24:03,568 INFO L125 PetriNetUnfolderBase]: For 451347/451351 co-relation queries the response was YES. [2024-06-28 04:24:03,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56644 conditions, 5991 events. 3920/5991 cut-off events. For 451347/451351 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 33784 event pairs, 994 based on Foata normal form. 8/5998 useless extension candidates. Maximal degree in co-relation 56485. Up to 5270 conditions per place. [2024-06-28 04:24:03,660 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 415 selfloop transitions, 135 changer transitions 0/553 dead transitions. [2024-06-28 04:24:03,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 553 transitions, 10583 flow [2024-06-28 04:24:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:03,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:24:03,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:24:03,661 INFO L175 Difference]: Start difference. First operand has 338 places, 516 transitions, 9223 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:24:03,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 553 transitions, 10583 flow [2024-06-28 04:24:04,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 553 transitions, 10304 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 04:24:04,999 INFO L231 Difference]: Finished difference. Result has 341 places, 520 transitions, 9404 flow [2024-06-28 04:24:04,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8944, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9404, PETRI_PLACES=341, PETRI_TRANSITIONS=520} [2024-06-28 04:24:04,999 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-28 04:24:04,999 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 520 transitions, 9404 flow [2024-06-28 04:24:05,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:05,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:05,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:05,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:24:05,000 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:05,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1833418740, now seen corresponding path program 13 times [2024-06-28 04:24:05,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:05,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032568195] [2024-06-28 04:24:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:05,869 INFO 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 04:24:05,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032568195] [2024-06-28 04:24:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032568195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:05,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:05,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:05,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002485814] [2024-06-28 04:24:05,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:05,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:05,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:05,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 520 transitions, 9404 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:05,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:05,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:05,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:07,595 INFO L124 PetriNetUnfolderBase]: 4012/6133 cut-off events. [2024-06-28 04:24:07,596 INFO L125 PetriNetUnfolderBase]: For 504442/504450 co-relation queries the response was YES. [2024-06-28 04:24:07,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58437 conditions, 6133 events. 4012/6133 cut-off events. For 504442/504450 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 34622 event pairs, 762 based on Foata normal form. 32/6164 useless extension candidates. Maximal degree in co-relation 58276. Up to 5081 conditions per place. [2024-06-28 04:24:07,675 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 408 selfloop transitions, 147 changer transitions 0/558 dead transitions. [2024-06-28 04:24:07,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 558 transitions, 10782 flow [2024-06-28 04:24:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:24:07,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:24:07,677 INFO L175 Difference]: Start difference. First operand has 341 places, 520 transitions, 9404 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:24:07,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 558 transitions, 10782 flow [2024-06-28 04:24:08,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 558 transitions, 10546 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:08,832 INFO L231 Difference]: Finished difference. Result has 344 places, 522 transitions, 9560 flow [2024-06-28 04:24:08,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9170, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9560, PETRI_PLACES=344, PETRI_TRANSITIONS=522} [2024-06-28 04:24:08,833 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-28 04:24:08,833 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 522 transitions, 9560 flow [2024-06-28 04:24:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:08,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:08,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:08,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:24:08,833 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:08,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash 576744242, now seen corresponding path program 3 times [2024-06-28 04:24:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147148316] [2024-06-28 04:24:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:09,501 INFO 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 04:24:09,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:09,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147148316] [2024-06-28 04:24:09,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147148316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:09,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:09,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:09,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442044767] [2024-06-28 04:24:09,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:09,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:09,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:09,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 522 transitions, 9560 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:09,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:09,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:09,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:11,178 INFO L124 PetriNetUnfolderBase]: 4156/6373 cut-off events. [2024-06-28 04:24:11,178 INFO L125 PetriNetUnfolderBase]: For 512159/512167 co-relation queries the response was YES. [2024-06-28 04:24:11,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61425 conditions, 6373 events. 4156/6373 cut-off events. For 512159/512167 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 36291 event pairs, 772 based on Foata normal form. 24/6396 useless extension candidates. Maximal degree in co-relation 61263. Up to 4449 conditions per place. [2024-06-28 04:24:11,270 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 408 selfloop transitions, 155 changer transitions 0/566 dead transitions. [2024-06-28 04:24:11,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 566 transitions, 11264 flow [2024-06-28 04:24:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:24:11,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:24:11,272 INFO L175 Difference]: Start difference. First operand has 344 places, 522 transitions, 9560 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:24:11,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 566 transitions, 11264 flow [2024-06-28 04:24:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 566 transitions, 10928 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 04:24:12,409 INFO L231 Difference]: Finished difference. Result has 346 places, 524 transitions, 9632 flow [2024-06-28 04:24:12,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9224, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9632, PETRI_PLACES=346, PETRI_TRANSITIONS=524} [2024-06-28 04:24:12,409 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-28 04:24:12,410 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 524 transitions, 9632 flow [2024-06-28 04:24:12,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:12,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:12,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:12,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:24:12,410 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:12,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:12,411 INFO L85 PathProgramCache]: Analyzing trace with hash 571022510, now seen corresponding path program 14 times [2024-06-28 04:24:12,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:12,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607470465] [2024-06-28 04:24:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:12,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:13,306 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 04:24:13,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:13,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607470465] [2024-06-28 04:24:13,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607470465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:13,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:13,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:13,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917052995] [2024-06-28 04:24:13,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:13,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:13,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:13,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:13,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 524 transitions, 9632 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:13,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:13,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:13,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:15,172 INFO L124 PetriNetUnfolderBase]: 4148/6361 cut-off events. [2024-06-28 04:24:15,172 INFO L125 PetriNetUnfolderBase]: For 496547/496555 co-relation queries the response was YES. [2024-06-28 04:24:15,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61073 conditions, 6361 events. 4148/6361 cut-off events. For 496547/496555 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 36426 event pairs, 840 based on Foata normal form. 12/6372 useless extension candidates. Maximal degree in co-relation 60910. Up to 5549 conditions per place. [2024-06-28 04:24:15,295 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 418 selfloop transitions, 137 changer transitions 0/558 dead transitions. [2024-06-28 04:24:15,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 558 transitions, 10966 flow [2024-06-28 04:24:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:24:15,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:24:15,296 INFO L175 Difference]: Start difference. First operand has 346 places, 524 transitions, 9632 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:24:15,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 558 transitions, 10966 flow [2024-06-28 04:24:16,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 558 transitions, 10751 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:16,437 INFO L231 Difference]: Finished difference. Result has 349 places, 526 transitions, 9789 flow [2024-06-28 04:24:16,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9419, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9789, PETRI_PLACES=349, PETRI_TRANSITIONS=526} [2024-06-28 04:24:16,438 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 04:24:16,438 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 526 transitions, 9789 flow [2024-06-28 04:24:16,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:16,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:16,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:16,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:24:16,439 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:16,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:16,439 INFO L85 PathProgramCache]: Analyzing trace with hash 571018790, now seen corresponding path program 15 times [2024-06-28 04:24:16,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:16,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522540774] [2024-06-28 04:24:16,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:16,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:17,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:17,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522540774] [2024-06-28 04:24:17,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522540774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:17,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:17,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:17,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168734807] [2024-06-28 04:24:17,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:17,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:17,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:17,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:17,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 526 transitions, 9789 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:17,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:17,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:17,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:19,126 INFO L124 PetriNetUnfolderBase]: 4165/6388 cut-off events. [2024-06-28 04:24:19,126 INFO L125 PetriNetUnfolderBase]: For 497597/497605 co-relation queries the response was YES. [2024-06-28 04:24:19,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61660 conditions, 6388 events. 4165/6388 cut-off events. For 497597/497605 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 36604 event pairs, 836 based on Foata normal form. 12/6399 useless extension candidates. Maximal degree in co-relation 61496. Up to 5218 conditions per place. [2024-06-28 04:24:19,232 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 416 selfloop transitions, 147 changer transitions 0/566 dead transitions. [2024-06-28 04:24:19,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 566 transitions, 11237 flow [2024-06-28 04:24:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:24:19,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 04:24:19,234 INFO L175 Difference]: Start difference. First operand has 349 places, 526 transitions, 9789 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:24:19,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 566 transitions, 11237 flow [2024-06-28 04:24:20,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 566 transitions, 10903 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 04:24:20,603 INFO L231 Difference]: Finished difference. Result has 352 places, 530 transitions, 9925 flow [2024-06-28 04:24:20,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9455, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9925, PETRI_PLACES=352, PETRI_TRANSITIONS=530} [2024-06-28 04:24:20,603 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 04:24:20,603 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 530 transitions, 9925 flow [2024-06-28 04:24:20,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:20,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:20,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:20,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:24:20,604 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 04:24:20,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash 333522463, now seen corresponding path program 2 times [2024-06-28 04:24:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755448307] [2024-06-28 04:24:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:24:21,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:21,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755448307] [2024-06-28 04:24:21,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755448307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:21,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:21,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:24:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886821814] [2024-06-28 04:24:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:21,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:24:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:24:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:24:21,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:21,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 530 transitions, 9925 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:21,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:21,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:21,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:23,030 INFO L124 PetriNetUnfolderBase]: 4180/6413 cut-off events. [2024-06-28 04:24:23,030 INFO L125 PetriNetUnfolderBase]: For 511010/511014 co-relation queries the response was YES. [2024-06-28 04:24:23,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62251 conditions, 6413 events. 4180/6413 cut-off events. For 511010/511014 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 36941 event pairs, 1241 based on Foata normal form. 6/6418 useless extension candidates. Maximal degree in co-relation 62085. Up to 6302 conditions per place. [2024-06-28 04:24:23,127 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 508 selfloop transitions, 42 changer transitions 0/553 dead transitions. [2024-06-28 04:24:23,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 553 transitions, 11303 flow [2024-06-28 04:24:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:24:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:24:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:24:23,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 04:24:23,129 INFO L175 Difference]: Start difference. First operand has 352 places, 530 transitions, 9925 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:24:23,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 553 transitions, 11303 flow [2024-06-28 04:24:24,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 553 transitions, 11031 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:24,221 INFO L231 Difference]: Finished difference. Result has 354 places, 536 transitions, 9860 flow [2024-06-28 04:24:24,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9655, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9860, PETRI_PLACES=354, PETRI_TRANSITIONS=536} [2024-06-28 04:24:24,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-28 04:24:24,222 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 536 transitions, 9860 flow [2024-06-28 04:24:24,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:24,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:24,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:24,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:24:24,222 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:24,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:24,223 INFO L85 PathProgramCache]: Analyzing trace with hash 243724276, now seen corresponding path program 16 times [2024-06-28 04:24:24,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:24,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107868207] [2024-06-28 04:24:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:25,201 INFO 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 04:24:25,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107868207] [2024-06-28 04:24:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107868207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:25,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:25,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775338771] [2024-06-28 04:24:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:25,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:25,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:25,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:25,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:25,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:25,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 536 transitions, 9860 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:25,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:25,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:25,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:26,971 INFO L124 PetriNetUnfolderBase]: 4272/6564 cut-off events. [2024-06-28 04:24:26,971 INFO L125 PetriNetUnfolderBase]: For 546564/546574 co-relation queries the response was YES. [2024-06-28 04:24:27,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63223 conditions, 6564 events. 4272/6564 cut-off events. For 546564/546574 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 37919 event pairs, 851 based on Foata normal form. 34/6594 useless extension candidates. Maximal degree in co-relation 63055. Up to 5392 conditions per place. [2024-06-28 04:24:27,065 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 405 selfloop transitions, 166 changer transitions 0/574 dead transitions. [2024-06-28 04:24:27,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 574 transitions, 11291 flow [2024-06-28 04:24:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 04:24:27,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225 [2024-06-28 04:24:27,066 INFO L175 Difference]: Start difference. First operand has 354 places, 536 transitions, 9860 flow. Second operand 10 states and 169 transitions. [2024-06-28 04:24:27,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 574 transitions, 11291 flow [2024-06-28 04:24:28,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 574 transitions, 11201 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 04:24:28,246 INFO L231 Difference]: Finished difference. Result has 360 places, 538 transitions, 10205 flow [2024-06-28 04:24:28,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9770, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10205, PETRI_PLACES=360, PETRI_TRANSITIONS=538} [2024-06-28 04:24:28,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2024-06-28 04:24:28,247 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 538 transitions, 10205 flow [2024-06-28 04:24:28,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:28,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:28,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:28,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:24:28,247 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:28,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:28,247 INFO L85 PathProgramCache]: Analyzing trace with hash 243730228, now seen corresponding path program 4 times [2024-06-28 04:24:28,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:28,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115706354] [2024-06-28 04:24:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:28,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:29,057 INFO 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 04:24:29,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:29,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115706354] [2024-06-28 04:24:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115706354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:29,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:29,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384792104] [2024-06-28 04:24:29,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:29,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:29,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:29,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:29,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:29,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 538 transitions, 10205 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:29,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:29,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:29,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:30,876 INFO L124 PetriNetUnfolderBase]: 4410/6792 cut-off events. [2024-06-28 04:24:30,876 INFO L125 PetriNetUnfolderBase]: For 569646/569656 co-relation queries the response was YES. [2024-06-28 04:24:30,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65395 conditions, 6792 events. 4410/6792 cut-off events. For 569646/569656 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 39597 event pairs, 873 based on Foata normal form. 42/6830 useless extension candidates. Maximal degree in co-relation 65227. Up to 5418 conditions per place. [2024-06-28 04:24:30,978 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 414 selfloop transitions, 166 changer transitions 0/583 dead transitions. [2024-06-28 04:24:30,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 583 transitions, 11682 flow [2024-06-28 04:24:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:24:30,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 04:24:30,979 INFO L175 Difference]: Start difference. First operand has 360 places, 538 transitions, 10205 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:24:30,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 583 transitions, 11682 flow [2024-06-28 04:24:32,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 583 transitions, 11279 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 04:24:32,090 INFO L231 Difference]: Finished difference. Result has 362 places, 543 transitions, 10255 flow [2024-06-28 04:24:32,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9808, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10255, PETRI_PLACES=362, PETRI_TRANSITIONS=543} [2024-06-28 04:24:32,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-28 04:24:32,090 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 543 transitions, 10255 flow [2024-06-28 04:24:32,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:32,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:32,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:32,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:24:32,091 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:32,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -286508952, now seen corresponding path program 17 times [2024-06-28 04:24:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481136766] [2024-06-28 04:24:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:33,023 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 04:24:33,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:33,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481136766] [2024-06-28 04:24:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481136766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:33,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:33,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:33,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813756614] [2024-06-28 04:24:33,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:33,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:33,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:33,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:33,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:33,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 543 transitions, 10255 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:33,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:33,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:33,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:34,890 INFO L124 PetriNetUnfolderBase]: 4427/6819 cut-off events. [2024-06-28 04:24:34,890 INFO L125 PetriNetUnfolderBase]: For 536527/536537 co-relation queries the response was YES. [2024-06-28 04:24:34,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65567 conditions, 6819 events. 4427/6819 cut-off events. For 536527/536537 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 39821 event pairs, 873 based on Foata normal form. 14/6829 useless extension candidates. Maximal degree in co-relation 65398. Up to 5754 conditions per place. [2024-06-28 04:24:34,992 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 403 selfloop transitions, 170 changer transitions 0/576 dead transitions. [2024-06-28 04:24:34,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 576 transitions, 11637 flow [2024-06-28 04:24:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:34,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:24:34,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:24:34,993 INFO L175 Difference]: Start difference. First operand has 362 places, 543 transitions, 10255 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:24:34,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 576 transitions, 11637 flow [2024-06-28 04:24:36,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 576 transitions, 11281 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:36,238 INFO L231 Difference]: Finished difference. Result has 365 places, 545 transitions, 10346 flow [2024-06-28 04:24:36,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9899, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10346, PETRI_PLACES=365, PETRI_TRANSITIONS=545} [2024-06-28 04:24:36,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 04:24:36,239 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 545 transitions, 10346 flow [2024-06-28 04:24:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:36,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:36,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:36,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:24:36,240 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:36,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 243939478, now seen corresponding path program 5 times [2024-06-28 04:24:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:36,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720196053] [2024-06-28 04:24:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:36,898 INFO 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 04:24:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:36,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720196053] [2024-06-28 04:24:36,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720196053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:36,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:36,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488241595] [2024-06-28 04:24:36,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:36,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:36,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:36,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:36,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:36,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 545 transitions, 10346 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:36,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:36,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:36,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:38,766 INFO L124 PetriNetUnfolderBase]: 4657/7201 cut-off events. [2024-06-28 04:24:38,766 INFO L125 PetriNetUnfolderBase]: For 636168/636178 co-relation queries the response was YES. [2024-06-28 04:24:38,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70318 conditions, 7201 events. 4657/7201 cut-off events. For 636168/636178 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 42683 event pairs, 940 based on Foata normal form. 26/7223 useless extension candidates. Maximal degree in co-relation 70148. Up to 5438 conditions per place. [2024-06-28 04:24:38,883 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 416 selfloop transitions, 169 changer transitions 0/588 dead transitions. [2024-06-28 04:24:38,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 588 transitions, 12118 flow [2024-06-28 04:24:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:24:38,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 04:24:38,884 INFO L175 Difference]: Start difference. First operand has 365 places, 545 transitions, 10346 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:24:38,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 588 transitions, 12118 flow [2024-06-28 04:24:40,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 588 transitions, 11689 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 04:24:40,210 INFO L231 Difference]: Finished difference. Result has 368 places, 548 transitions, 10416 flow [2024-06-28 04:24:40,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9917, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10416, PETRI_PLACES=368, PETRI_TRANSITIONS=548} [2024-06-28 04:24:40,210 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-28 04:24:40,210 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 548 transitions, 10416 flow [2024-06-28 04:24:40,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:40,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:40,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:40,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:24:40,211 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:40,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:40,211 INFO L85 PathProgramCache]: Analyzing trace with hash -286512672, now seen corresponding path program 18 times [2024-06-28 04:24:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:40,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097693178] [2024-06-28 04:24:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:40,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:41,096 INFO 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 04:24:41,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:41,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097693178] [2024-06-28 04:24:41,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097693178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:41,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:41,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:41,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480067181] [2024-06-28 04:24:41,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:41,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:41,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:41,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 548 transitions, 10416 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:41,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:41,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:41,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:43,013 INFO L124 PetriNetUnfolderBase]: 4785/7409 cut-off events. [2024-06-28 04:24:43,013 INFO L125 PetriNetUnfolderBase]: For 684558/684568 co-relation queries the response was YES. [2024-06-28 04:24:43,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73713 conditions, 7409 events. 4785/7409 cut-off events. For 684558/684568 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44354 event pairs, 966 based on Foata normal form. 14/7419 useless extension candidates. Maximal degree in co-relation 73541. Up to 5975 conditions per place. [2024-06-28 04:24:43,136 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 411 selfloop transitions, 176 changer transitions 0/590 dead transitions. [2024-06-28 04:24:43,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 590 transitions, 12236 flow [2024-06-28 04:24:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:24:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:24:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 04:24:43,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 04:24:43,137 INFO L175 Difference]: Start difference. First operand has 368 places, 548 transitions, 10416 flow. Second operand 9 states and 159 transitions. [2024-06-28 04:24:43,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 590 transitions, 12236 flow [2024-06-28 04:24:44,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 590 transitions, 11990 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 04:24:44,568 INFO L231 Difference]: Finished difference. Result has 373 places, 553 transitions, 10758 flow [2024-06-28 04:24:44,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10170, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10758, PETRI_PLACES=373, PETRI_TRANSITIONS=553} [2024-06-28 04:24:44,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-28 04:24:44,569 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 553 transitions, 10758 flow [2024-06-28 04:24:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:44,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:44,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:44,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:24:44,569 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:44,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash -286358850, now seen corresponding path program 6 times [2024-06-28 04:24:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:44,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568148577] [2024-06-28 04:24:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:44,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:45,405 INFO 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 04:24:45,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:45,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568148577] [2024-06-28 04:24:45,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568148577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:45,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:45,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204823040] [2024-06-28 04:24:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:45,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:45,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:45,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:45,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:45,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 553 transitions, 10758 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:45,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:45,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:45,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:47,335 INFO L124 PetriNetUnfolderBase]: 4729/7321 cut-off events. [2024-06-28 04:24:47,335 INFO L125 PetriNetUnfolderBase]: For 688923/688933 co-relation queries the response was YES. [2024-06-28 04:24:47,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71876 conditions, 7321 events. 4729/7321 cut-off events. For 688923/688933 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 43696 event pairs, 946 based on Foata normal form. 42/7359 useless extension candidates. Maximal degree in co-relation 71701. Up to 6067 conditions per place. [2024-06-28 04:24:47,456 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 419 selfloop transitions, 171 changer transitions 0/593 dead transitions. [2024-06-28 04:24:47,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 593 transitions, 12150 flow [2024-06-28 04:24:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 04:24:47,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 04:24:47,458 INFO L175 Difference]: Start difference. First operand has 373 places, 553 transitions, 10758 flow. Second operand 10 states and 172 transitions. [2024-06-28 04:24:47,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 593 transitions, 12150 flow [2024-06-28 04:24:49,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 593 transitions, 11712 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-28 04:24:49,083 INFO L231 Difference]: Finished difference. Result has 377 places, 553 transitions, 10672 flow [2024-06-28 04:24:49,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10320, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10672, PETRI_PLACES=377, PETRI_TRANSITIONS=553} [2024-06-28 04:24:49,084 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-28 04:24:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 553 transitions, 10672 flow [2024-06-28 04:24:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:49,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:49,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:24:49,084 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:49,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1806001364, now seen corresponding path program 19 times [2024-06-28 04:24:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:49,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839945938] [2024-06-28 04:24:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:50,026 INFO 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 04:24:50,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:50,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839945938] [2024-06-28 04:24:50,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839945938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:50,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:50,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:24:50,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346192822] [2024-06-28 04:24:50,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:50,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:24:50,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:50,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:24:50,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:24:50,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:50,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 553 transitions, 10672 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:50,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:50,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:50,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:51,982 INFO L124 PetriNetUnfolderBase]: 4685/7253 cut-off events. [2024-06-28 04:24:51,982 INFO L125 PetriNetUnfolderBase]: For 625165/625175 co-relation queries the response was YES. [2024-06-28 04:24:52,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69216 conditions, 7253 events. 4685/7253 cut-off events. For 625165/625175 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 43340 event pairs, 899 based on Foata normal form. 34/7283 useless extension candidates. Maximal degree in co-relation 69040. Up to 6068 conditions per place. [2024-06-28 04:24:52,104 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 401 selfloop transitions, 186 changer transitions 0/590 dead transitions. [2024-06-28 04:24:52,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 590 transitions, 12084 flow [2024-06-28 04:24:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 04:24:52,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-28 04:24:52,106 INFO L175 Difference]: Start difference. First operand has 377 places, 553 transitions, 10672 flow. Second operand 10 states and 167 transitions. [2024-06-28 04:24:52,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 590 transitions, 12084 flow [2024-06-28 04:24:53,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 590 transitions, 11639 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-28 04:24:53,602 INFO L231 Difference]: Finished difference. Result has 376 places, 554 transitions, 10649 flow [2024-06-28 04:24:53,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10243, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10649, PETRI_PLACES=376, PETRI_TRANSITIONS=554} [2024-06-28 04:24:53,603 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-28 04:24:53,603 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 554 transitions, 10649 flow [2024-06-28 04:24:53,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:53,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:53,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:53,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:24:53,604 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:53,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1549026182, now seen corresponding path program 7 times [2024-06-28 04:24:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:53,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418845216] [2024-06-28 04:24:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:53,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:54,359 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 04:24:54,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:54,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418845216] [2024-06-28 04:24:54,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418845216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:54,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:54,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:54,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042307435] [2024-06-28 04:24:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:54,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:54,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:54,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:54,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 554 transitions, 10649 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:54,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:54,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:54,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:24:56,295 INFO L124 PetriNetUnfolderBase]: 4804/7454 cut-off events. [2024-06-28 04:24:56,296 INFO L125 PetriNetUnfolderBase]: For 654244/654254 co-relation queries the response was YES. [2024-06-28 04:24:56,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71501 conditions, 7454 events. 4804/7454 cut-off events. For 654244/654254 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 44554 event pairs, 868 based on Foata normal form. 26/7476 useless extension candidates. Maximal degree in co-relation 71325. Up to 3971 conditions per place. [2024-06-28 04:24:56,410 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 381 selfloop transitions, 213 changer transitions 0/597 dead transitions. [2024-06-28 04:24:56,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 597 transitions, 12444 flow [2024-06-28 04:24:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:24:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:24:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:24:56,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-28 04:24:56,411 INFO L175 Difference]: Start difference. First operand has 376 places, 554 transitions, 10649 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:24:56,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 597 transitions, 12444 flow [2024-06-28 04:24:57,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 597 transitions, 12065 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 04:24:57,855 INFO L231 Difference]: Finished difference. Result has 378 places, 556 transitions, 10820 flow [2024-06-28 04:24:57,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10270, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10820, PETRI_PLACES=378, PETRI_TRANSITIONS=556} [2024-06-28 04:24:57,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 04:24:57,855 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 556 transitions, 10820 flow [2024-06-28 04:24:57,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:57,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:24:57,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:24:57,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:24:57,856 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:24:57,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:24:57,857 INFO L85 PathProgramCache]: Analyzing trace with hash -210586840, now seen corresponding path program 8 times [2024-06-28 04:24:57,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:24:57,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269707039] [2024-06-28 04:24:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:24:57,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:24:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:24:58,514 INFO 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 04:24:58,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:24:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269707039] [2024-06-28 04:24:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269707039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:24:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:24:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:24:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466763764] [2024-06-28 04:24:58,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:24:58,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:24:58,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:24:58,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:24:58,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:24:58,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:24:58,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 556 transitions, 10820 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:24:58,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:24:58,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:24:58,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:00,329 INFO L124 PetriNetUnfolderBase]: 4812/7474 cut-off events. [2024-06-28 04:25:00,329 INFO L125 PetriNetUnfolderBase]: For 659239/659249 co-relation queries the response was YES. [2024-06-28 04:25:00,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71648 conditions, 7474 events. 4812/7474 cut-off events. For 659239/659249 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 45104 event pairs, 933 based on Foata normal form. 26/7496 useless extension candidates. Maximal degree in co-relation 71471. Up to 5890 conditions per place. [2024-06-28 04:25:00,645 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 410 selfloop transitions, 184 changer transitions 0/597 dead transitions. [2024-06-28 04:25:00,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 597 transitions, 12556 flow [2024-06-28 04:25:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:25:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:25:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 04:25:00,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 04:25:00,646 INFO L175 Difference]: Start difference. First operand has 378 places, 556 transitions, 10820 flow. Second operand 9 states and 159 transitions. [2024-06-28 04:25:00,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 597 transitions, 12556 flow [2024-06-28 04:25:02,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 597 transitions, 12277 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 04:25:02,249 INFO L231 Difference]: Finished difference. Result has 381 places, 557 transitions, 10976 flow [2024-06-28 04:25:02,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10545, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10976, PETRI_PLACES=381, PETRI_TRANSITIONS=557} [2024-06-28 04:25:02,250 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-28 04:25:02,250 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 557 transitions, 10976 flow [2024-06-28 04:25:02,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:02,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:02,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:25:02,250 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:02,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1805995412, now seen corresponding path program 9 times [2024-06-28 04:25:02,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381437729] [2024-06-28 04:25:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:03,194 INFO 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 04:25:03,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:03,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381437729] [2024-06-28 04:25:03,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381437729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:03,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:03,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:25:03,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843207465] [2024-06-28 04:25:03,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:03,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:25:03,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:03,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:25:03,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:25:03,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:03,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 557 transitions, 10976 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:03,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:03,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:03,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:05,152 INFO L124 PetriNetUnfolderBase]: 4756/7386 cut-off events. [2024-06-28 04:25:05,152 INFO L125 PetriNetUnfolderBase]: For 633276/633286 co-relation queries the response was YES. [2024-06-28 04:25:05,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69335 conditions, 7386 events. 4756/7386 cut-off events. For 633276/633286 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 44489 event pairs, 916 based on Foata normal form. 42/7424 useless extension candidates. Maximal degree in co-relation 69156. Up to 6012 conditions per place. [2024-06-28 04:25:05,268 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 410 selfloop transitions, 183 changer transitions 0/596 dead transitions. [2024-06-28 04:25:05,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 596 transitions, 12368 flow [2024-06-28 04:25:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:25:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:25:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 04:25:05,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225 [2024-06-28 04:25:05,270 INFO L175 Difference]: Start difference. First operand has 381 places, 557 transitions, 10976 flow. Second operand 10 states and 169 transitions. [2024-06-28 04:25:05,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 596 transitions, 12368 flow [2024-06-28 04:25:07,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 596 transitions, 11835 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 04:25:07,058 INFO L231 Difference]: Finished difference. Result has 383 places, 557 transitions, 10821 flow [2024-06-28 04:25:07,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10443, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10821, PETRI_PLACES=383, PETRI_TRANSITIONS=557} [2024-06-28 04:25:07,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 04:25:07,058 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 557 transitions, 10821 flow [2024-06-28 04:25:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:07,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:07,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:07,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:25:07,059 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 04:25:07,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash 2088805609, now seen corresponding path program 3 times [2024-06-28 04:25:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158513119] [2024-06-28 04:25:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:07,599 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 04:25:07,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:07,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158513119] [2024-06-28 04:25:07,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158513119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:07,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:07,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:25:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823808352] [2024-06-28 04:25:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:07,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:25:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:25:07,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:25:07,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:07,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 557 transitions, 10821 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:07,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:07,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:07,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:09,398 INFO L124 PetriNetUnfolderBase]: 4766/7401 cut-off events. [2024-06-28 04:25:09,398 INFO L125 PetriNetUnfolderBase]: For 571439/571443 co-relation queries the response was YES. [2024-06-28 04:25:09,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68721 conditions, 7401 events. 4766/7401 cut-off events. For 571439/571443 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44792 event pairs, 1396 based on Foata normal form. 6/7406 useless extension candidates. Maximal degree in co-relation 68542. Up to 7309 conditions per place. [2024-06-28 04:25:09,514 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 536 selfloop transitions, 34 changer transitions 0/573 dead transitions. [2024-06-28 04:25:09,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 573 transitions, 12064 flow [2024-06-28 04:25:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:25:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:25:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-28 04:25:09,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-28 04:25:09,515 INFO L175 Difference]: Start difference. First operand has 383 places, 557 transitions, 10821 flow. Second operand 5 states and 89 transitions. [2024-06-28 04:25:09,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 573 transitions, 12064 flow [2024-06-28 04:25:11,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 573 transitions, 11672 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 04:25:11,246 INFO L231 Difference]: Finished difference. Result has 378 places, 560 transitions, 10583 flow [2024-06-28 04:25:11,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10429, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10583, PETRI_PLACES=378, PETRI_TRANSITIONS=560} [2024-06-28 04:25:11,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 04:25:11,247 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 560 transitions, 10583 flow [2024-06-28 04:25:11,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:11,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:11,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:25:11,247 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 04:25:11,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1133096087, now seen corresponding path program 4 times [2024-06-28 04:25:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:11,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490501875] [2024-06-28 04:25:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:11,778 INFO 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 04:25:11,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:11,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490501875] [2024-06-28 04:25:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490501875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:11,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:11,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:25:11,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632702573] [2024-06-28 04:25:11,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:11,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:25:11,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:11,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:25:11,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:25:11,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:11,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 560 transitions, 10583 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:11,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:11,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:11,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:13,641 INFO L124 PetriNetUnfolderBase]: 4760/7393 cut-off events. [2024-06-28 04:25:13,641 INFO L125 PetriNetUnfolderBase]: For 574571/574575 co-relation queries the response was YES. [2024-06-28 04:25:13,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67939 conditions, 7393 events. 4760/7393 cut-off events. For 574571/574575 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 44756 event pairs, 1395 based on Foata normal form. 6/7398 useless extension candidates. Maximal degree in co-relation 67760. Up to 7281 conditions per place. [2024-06-28 04:25:13,762 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 529 selfloop transitions, 43 changer transitions 0/575 dead transitions. [2024-06-28 04:25:13,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 575 transitions, 11785 flow [2024-06-28 04:25:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:25:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:25:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 04:25:13,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 04:25:13,763 INFO L175 Difference]: Start difference. First operand has 378 places, 560 transitions, 10583 flow. Second operand 6 states and 101 transitions. [2024-06-28 04:25:13,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 575 transitions, 11785 flow [2024-06-28 04:25:15,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 575 transitions, 11692 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 04:25:15,273 INFO L231 Difference]: Finished difference. Result has 381 places, 560 transitions, 10591 flow [2024-06-28 04:25:15,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10490, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10591, PETRI_PLACES=381, PETRI_TRANSITIONS=560} [2024-06-28 04:25:15,274 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-28 04:25:15,274 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 560 transitions, 10591 flow [2024-06-28 04:25:15,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:15,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:15,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:15,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:25:15,274 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 04:25:15,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2039039571, now seen corresponding path program 1 times [2024-06-28 04:25:15,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:15,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353598514] [2024-06-28 04:25:15,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:15,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:15,859 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 04:25:15,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:15,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353598514] [2024-06-28 04:25:15,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353598514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:15,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:15,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:15,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509591357] [2024-06-28 04:25:15,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:15,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:15,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:15,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:25:15,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 560 transitions, 10591 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 04:25:15,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:15,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:25:15,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:17,688 INFO L124 PetriNetUnfolderBase]: 4676/7327 cut-off events. [2024-06-28 04:25:17,688 INFO L125 PetriNetUnfolderBase]: For 626908/626938 co-relation queries the response was YES. [2024-06-28 04:25:17,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68480 conditions, 7327 events. 4676/7327 cut-off events. For 626908/626938 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 45032 event pairs, 1641 based on Foata normal form. 9/7303 useless extension candidates. Maximal degree in co-relation 68300. Up to 7005 conditions per place. [2024-06-28 04:25:17,812 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 496 selfloop transitions, 26 changer transitions 0/585 dead transitions. [2024-06-28 04:25:17,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 585 transitions, 11981 flow [2024-06-28 04:25:17,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:25:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:25:17,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 04:25:17,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-28 04:25:17,813 INFO L175 Difference]: Start difference. First operand has 381 places, 560 transitions, 10591 flow. Second operand 7 states and 118 transitions. [2024-06-28 04:25:17,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 585 transitions, 11981 flow [2024-06-28 04:25:19,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 585 transitions, 11879 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 04:25:19,617 INFO L231 Difference]: Finished difference. Result has 383 places, 566 transitions, 10683 flow [2024-06-28 04:25:19,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10491, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10683, PETRI_PLACES=383, PETRI_TRANSITIONS=566} [2024-06-28 04:25:19,620 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 04:25:19,620 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 566 transitions, 10683 flow [2024-06-28 04:25:19,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 04:25:19,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:19,620 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 04:25:19,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:25:19,620 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 04:25:19,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:19,621 INFO L85 PathProgramCache]: Analyzing trace with hash -361835283, now seen corresponding path program 1 times [2024-06-28 04:25:19,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:19,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819290376] [2024-06-28 04:25:19,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:19,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:20,193 INFO 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 04:25:20,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:20,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819290376] [2024-06-28 04:25:20,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819290376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:20,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:20,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:20,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725318105] [2024-06-28 04:25:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:20,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:20,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:20,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:20,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:20,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 566 transitions, 10683 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:20,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:20,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:20,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:22,375 INFO L124 PetriNetUnfolderBase]: 4835/7494 cut-off events. [2024-06-28 04:25:22,375 INFO L125 PetriNetUnfolderBase]: For 606063/606071 co-relation queries the response was YES. [2024-06-28 04:25:22,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69432 conditions, 7494 events. 4835/7494 cut-off events. For 606063/606071 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 45202 event pairs, 1037 based on Foata normal form. 12/7505 useless extension candidates. Maximal degree in co-relation 69252. Up to 7145 conditions per place. [2024-06-28 04:25:22,493 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 495 selfloop transitions, 104 changer transitions 0/602 dead transitions. [2024-06-28 04:25:22,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 602 transitions, 12409 flow [2024-06-28 04:25:22,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:25:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:25:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:25:22,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:25:22,494 INFO L175 Difference]: Start difference. First operand has 383 places, 566 transitions, 10683 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:25:22,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 602 transitions, 12409 flow [2024-06-28 04:25:24,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 602 transitions, 12324 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 04:25:24,153 INFO L231 Difference]: Finished difference. Result has 389 places, 575 transitions, 10962 flow [2024-06-28 04:25:24,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10598, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10962, PETRI_PLACES=389, PETRI_TRANSITIONS=575} [2024-06-28 04:25:24,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-28 04:25:24,154 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 575 transitions, 10962 flow [2024-06-28 04:25:24,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:24,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:24,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:24,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:25:24,154 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 04:25:24,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2039034921, now seen corresponding path program 2 times [2024-06-28 04:25:24,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:24,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305793324] [2024-06-28 04:25:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:24,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:24,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:24,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305793324] [2024-06-28 04:25:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305793324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:24,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:24,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:24,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212719089] [2024-06-28 04:25:24,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:24,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:24,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:25:24,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 575 transitions, 10962 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 04:25:24,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:24,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:25:24,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:26,866 INFO L124 PetriNetUnfolderBase]: 4755/7439 cut-off events. [2024-06-28 04:25:26,867 INFO L125 PetriNetUnfolderBase]: For 659899/659929 co-relation queries the response was YES. [2024-06-28 04:25:26,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70443 conditions, 7439 events. 4755/7439 cut-off events. For 659899/659929 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 45705 event pairs, 1652 based on Foata normal form. 9/7415 useless extension candidates. Maximal degree in co-relation 70261. Up to 7127 conditions per place. [2024-06-28 04:25:26,976 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 509 selfloop transitions, 26 changer transitions 0/598 dead transitions. [2024-06-28 04:25:26,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 598 transitions, 12194 flow [2024-06-28 04:25:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:25:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:25:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:25:26,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 04:25:26,978 INFO L175 Difference]: Start difference. First operand has 389 places, 575 transitions, 10962 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:25:26,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 598 transitions, 12194 flow [2024-06-28 04:25:28,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 598 transitions, 12074 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 04:25:28,552 INFO L231 Difference]: Finished difference. Result has 393 places, 583 transitions, 11011 flow [2024-06-28 04:25:28,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10842, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11011, PETRI_PLACES=393, PETRI_TRANSITIONS=583} [2024-06-28 04:25:28,552 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-28 04:25:28,553 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 583 transitions, 11011 flow [2024-06-28 04:25:28,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 04:25:28,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:28,553 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 04:25:28,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:25:28,553 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 04:25:28,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 162511861, now seen corresponding path program 2 times [2024-06-28 04:25:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:28,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279714634] [2024-06-28 04:25:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:29,130 INFO 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 04:25:29,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279714634] [2024-06-28 04:25:29,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279714634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:29,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066816640] [2024-06-28 04:25:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:29,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:29,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:29,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 583 transitions, 11011 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:29,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:29,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:29,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:31,287 INFO L124 PetriNetUnfolderBase]: 4935/7645 cut-off events. [2024-06-28 04:25:31,287 INFO L125 PetriNetUnfolderBase]: For 651265/651269 co-relation queries the response was YES. [2024-06-28 04:25:31,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71278 conditions, 7645 events. 4935/7645 cut-off events. For 651265/651269 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 46296 event pairs, 1361 based on Foata normal form. 12/7656 useless extension candidates. Maximal degree in co-relation 71094. Up to 7237 conditions per place. [2024-06-28 04:25:31,429 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 505 selfloop transitions, 124 changer transitions 0/632 dead transitions. [2024-06-28 04:25:31,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 632 transitions, 12882 flow [2024-06-28 04:25:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:25:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:25:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:25:31,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:25:31,430 INFO L175 Difference]: Start difference. First operand has 393 places, 583 transitions, 11011 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:25:31,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 632 transitions, 12882 flow [2024-06-28 04:25:33,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 632 transitions, 12781 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 04:25:33,261 INFO L231 Difference]: Finished difference. Result has 398 places, 604 transitions, 11578 flow [2024-06-28 04:25:33,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10910, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11578, PETRI_PLACES=398, PETRI_TRANSITIONS=604} [2024-06-28 04:25:33,261 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-28 04:25:33,261 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 604 transitions, 11578 flow [2024-06-28 04:25:33,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:25:33,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:33,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:33,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:25:33,262 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 04:25:33,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:33,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1144530251, now seen corresponding path program 3 times [2024-06-28 04:25:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:33,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287307241] [2024-06-28 04:25:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:33,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:33,834 INFO 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 04:25:33,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:33,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287307241] [2024-06-28 04:25:33,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287307241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:33,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:33,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:25:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457981141] [2024-06-28 04:25:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:33,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:25:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:25:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:25:33,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:25:33,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 604 transitions, 11578 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 04:25:33,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:33,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:25:33,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:35,788 INFO L124 PetriNetUnfolderBase]: 4808/7516 cut-off events. [2024-06-28 04:25:35,788 INFO L125 PetriNetUnfolderBase]: For 669376/669404 co-relation queries the response was YES. [2024-06-28 04:25:35,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71194 conditions, 7516 events. 4808/7516 cut-off events. For 669376/669404 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 46173 event pairs, 1664 based on Foata normal form. 9/7492 useless extension candidates. Maximal degree in co-relation 71008. Up to 7190 conditions per place. [2024-06-28 04:25:35,936 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 527 selfloop transitions, 24 changer transitions 0/620 dead transitions. [2024-06-28 04:25:35,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 620 transitions, 12748 flow [2024-06-28 04:25:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:25:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:25:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 04:25:35,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:25:35,937 INFO L175 Difference]: Start difference. First operand has 398 places, 604 transitions, 11578 flow. Second operand 6 states and 104 transitions. [2024-06-28 04:25:35,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 620 transitions, 12748 flow [2024-06-28 04:25:38,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 620 transitions, 12491 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-28 04:25:38,168 INFO L231 Difference]: Finished difference. Result has 400 places, 604 transitions, 11380 flow [2024-06-28 04:25:38,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11321, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11380, PETRI_PLACES=400, PETRI_TRANSITIONS=604} [2024-06-28 04:25:38,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-28 04:25:38,169 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 604 transitions, 11380 flow [2024-06-28 04:25:38,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 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 04:25:38,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:38,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:25:38,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:25:38,169 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 04:25:38,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1120153277, now seen corresponding path program 1 times [2024-06-28 04:25:38,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:38,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171779204] [2024-06-28 04:25:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:38,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:25:39,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:39,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171779204] [2024-06-28 04:25:39,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171779204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:39,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:39,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:25:39,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17527792] [2024-06-28 04:25:39,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:39,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:25:39,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:39,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:25:39,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:25:39,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:39,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 604 transitions, 11380 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:25:39,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:39,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:39,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:41,174 INFO L124 PetriNetUnfolderBase]: 4921/7630 cut-off events. [2024-06-28 04:25:41,174 INFO L125 PetriNetUnfolderBase]: For 647758/647758 co-relation queries the response was YES. [2024-06-28 04:25:41,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70836 conditions, 7630 events. 4921/7630 cut-off events. For 647758/647758 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 46230 event pairs, 1732 based on Foata normal form. 2/7631 useless extension candidates. Maximal degree in co-relation 70649. Up to 7562 conditions per place. [2024-06-28 04:25:41,287 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 597 selfloop transitions, 14 changer transitions 0/614 dead transitions. [2024-06-28 04:25:41,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 614 transitions, 12658 flow [2024-06-28 04:25:41,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:25:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:25:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-28 04:25:41,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:25:41,288 INFO L175 Difference]: Start difference. First operand has 400 places, 604 transitions, 11380 flow. Second operand 5 states and 80 transitions. [2024-06-28 04:25:41,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 614 transitions, 12658 flow [2024-06-28 04:25:43,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 614 transitions, 12599 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:25:43,064 INFO L231 Difference]: Finished difference. Result has 400 places, 606 transitions, 11386 flow [2024-06-28 04:25:43,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11321, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11386, PETRI_PLACES=400, PETRI_TRANSITIONS=606} [2024-06-28 04:25:43,065 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-28 04:25:43,065 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 606 transitions, 11386 flow [2024-06-28 04:25:43,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:25:43,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:43,065 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 04:25:43,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:25:43,065 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:43,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 195274251, now seen corresponding path program 1 times [2024-06-28 04:25:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162974342] [2024-06-28 04:25:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:44,065 INFO 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 04:25:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162974342] [2024-06-28 04:25:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162974342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:44,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:44,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:25:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574667309] [2024-06-28 04:25:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:44,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:25:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:25:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:25:44,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:44,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 606 transitions, 11386 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:25:44,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:44,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:44,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:46,415 INFO L124 PetriNetUnfolderBase]: 4962/7693 cut-off events. [2024-06-28 04:25:46,415 INFO L125 PetriNetUnfolderBase]: For 689542/689550 co-relation queries the response was YES. [2024-06-28 04:25:46,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71649 conditions, 7693 events. 4962/7693 cut-off events. For 689542/689550 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 46419 event pairs, 1016 based on Foata normal form. 20/7712 useless extension candidates. Maximal degree in co-relation 71461. Up to 7195 conditions per place. [2024-06-28 04:25:46,523 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 569 selfloop transitions, 80 changer transitions 0/652 dead transitions. [2024-06-28 04:25:46,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 652 transitions, 12926 flow [2024-06-28 04:25:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:25:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:25:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 04:25:46,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-06-28 04:25:46,524 INFO L175 Difference]: Start difference. First operand has 400 places, 606 transitions, 11386 flow. Second operand 11 states and 174 transitions. [2024-06-28 04:25:46,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 652 transitions, 12926 flow [2024-06-28 04:25:48,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 652 transitions, 12877 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 04:25:48,393 INFO L231 Difference]: Finished difference. Result has 408 places, 607 transitions, 11567 flow [2024-06-28 04:25:48,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11337, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11567, PETRI_PLACES=408, PETRI_TRANSITIONS=607} [2024-06-28 04:25:48,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-28 04:25:48,394 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 607 transitions, 11567 flow [2024-06-28 04:25:48,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:25:48,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:48,395 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 04:25:48,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:25:48,395 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:48,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1644216477, now seen corresponding path program 2 times [2024-06-28 04:25:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:48,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774405271] [2024-06-28 04:25:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:48,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:49,432 INFO 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 04:25:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774405271] [2024-06-28 04:25:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774405271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:49,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:49,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:25:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487561322] [2024-06-28 04:25:49,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:49,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:25:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:25:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:25:49,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:49,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 607 transitions, 11567 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:25:49,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:49,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:49,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:51,563 INFO L124 PetriNetUnfolderBase]: 5030/7805 cut-off events. [2024-06-28 04:25:51,760 INFO L125 PetriNetUnfolderBase]: For 710831/710839 co-relation queries the response was YES. [2024-06-28 04:25:51,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73268 conditions, 7805 events. 5030/7805 cut-off events. For 710831/710839 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 47570 event pairs, 1311 based on Foata normal form. 20/7824 useless extension candidates. Maximal degree in co-relation 73079. Up to 7370 conditions per place. [2024-06-28 04:25:51,864 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 576 selfloop transitions, 75 changer transitions 0/654 dead transitions. [2024-06-28 04:25:51,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 654 transitions, 13179 flow [2024-06-28 04:25:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:25:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:25:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 04:25:51,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:25:51,866 INFO L175 Difference]: Start difference. First operand has 408 places, 607 transitions, 11567 flow. Second operand 11 states and 176 transitions. [2024-06-28 04:25:51,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 654 transitions, 13179 flow [2024-06-28 04:25:53,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 654 transitions, 12924 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 04:25:53,892 INFO L231 Difference]: Finished difference. Result has 410 places, 609 transitions, 11602 flow [2024-06-28 04:25:53,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11363, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11602, PETRI_PLACES=410, PETRI_TRANSITIONS=609} [2024-06-28 04:25:53,892 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-28 04:25:53,892 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 609 transitions, 11602 flow [2024-06-28 04:25:53,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:25:53,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:53,893 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 04:25:53,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:25:53,893 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:53,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash 125484243, now seen corresponding path program 3 times [2024-06-28 04:25:53,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:53,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193754650] [2024-06-28 04:25:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:53,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:25:54,920 INFO 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 04:25:54,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:25:54,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193754650] [2024-06-28 04:25:54,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193754650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:25:54,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:25:54,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:25:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206354245] [2024-06-28 04:25:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:25:54,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:25:54,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:25:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:25:54,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:25:55,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:25:55,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 609 transitions, 11602 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:25:55,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:25:55,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:25:55,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:25:57,126 INFO L124 PetriNetUnfolderBase]: 5010/7781 cut-off events. [2024-06-28 04:25:57,127 INFO L125 PetriNetUnfolderBase]: For 686935/686939 co-relation queries the response was YES. [2024-06-28 04:25:57,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71812 conditions, 7781 events. 5010/7781 cut-off events. For 686935/686939 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 47360 event pairs, 1302 based on Foata normal form. 16/7796 useless extension candidates. Maximal degree in co-relation 71622. Up to 7083 conditions per place. [2024-06-28 04:25:57,267 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 514 selfloop transitions, 141 changer transitions 0/658 dead transitions. [2024-06-28 04:25:57,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 658 transitions, 13140 flow [2024-06-28 04:25:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:25:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:25:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-28 04:25:57,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-28 04:25:57,268 INFO L175 Difference]: Start difference. First operand has 410 places, 609 transitions, 11602 flow. Second operand 12 states and 194 transitions. [2024-06-28 04:25:57,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 658 transitions, 13140 flow [2024-06-28 04:25:59,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 658 transitions, 12941 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 04:25:59,411 INFO L231 Difference]: Finished difference. Result has 414 places, 610 transitions, 11753 flow [2024-06-28 04:25:59,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11403, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11753, PETRI_PLACES=414, PETRI_TRANSITIONS=610} [2024-06-28 04:25:59,412 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-28 04:25:59,412 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 610 transitions, 11753 flow [2024-06-28 04:25:59,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:25:59,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:25:59,412 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 04:25:59,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:25:59,412 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:25:59,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:25:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash -583527253, now seen corresponding path program 4 times [2024-06-28 04:25:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:25:59,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757745578] [2024-06-28 04:25:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:25:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:25:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:00,474 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 04:26:00,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:00,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757745578] [2024-06-28 04:26:00,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757745578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:00,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:00,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:26:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024693045] [2024-06-28 04:26:00,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:00,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:26:00,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:00,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:26:00,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:26:00,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:00,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 610 transitions, 11753 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:26:00,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:00,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:00,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:02,734 INFO L124 PetriNetUnfolderBase]: 5051/7850 cut-off events. [2024-06-28 04:26:02,735 INFO L125 PetriNetUnfolderBase]: For 704736/704740 co-relation queries the response was YES. [2024-06-28 04:26:02,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72698 conditions, 7850 events. 5051/7850 cut-off events. For 704736/704740 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 47935 event pairs, 1286 based on Foata normal form. 16/7865 useless extension candidates. Maximal degree in co-relation 72506. Up to 7005 conditions per place. [2024-06-28 04:26:02,864 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 511 selfloop transitions, 145 changer transitions 0/659 dead transitions. [2024-06-28 04:26:02,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 659 transitions, 13325 flow [2024-06-28 04:26:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:26:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:26:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-28 04:26:02,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-28 04:26:02,865 INFO L175 Difference]: Start difference. First operand has 414 places, 610 transitions, 11753 flow. Second operand 12 states and 194 transitions. [2024-06-28 04:26:02,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 659 transitions, 13325 flow [2024-06-28 04:26:04,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 659 transitions, 13093 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 04:26:04,941 INFO L231 Difference]: Finished difference. Result has 418 places, 611 transitions, 11886 flow [2024-06-28 04:26:04,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11521, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11886, PETRI_PLACES=418, PETRI_TRANSITIONS=611} [2024-06-28 04:26:04,941 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 04:26:04,941 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 611 transitions, 11886 flow [2024-06-28 04:26:04,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:26:04,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:04,942 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 04:26:04,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:26:04,942 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:04,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1852176835, now seen corresponding path program 5 times [2024-06-28 04:26:04,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:04,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128510906] [2024-06-28 04:26:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:06,106 INFO 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 04:26:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128510906] [2024-06-28 04:26:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128510906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:06,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:06,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:26:06,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89183344] [2024-06-28 04:26:06,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:06,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:26:06,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:06,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:26:06,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:26:06,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:06,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 611 transitions, 11886 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:26:06,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:06,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:06,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:08,414 INFO L124 PetriNetUnfolderBase]: 5146/8001 cut-off events. [2024-06-28 04:26:08,414 INFO L125 PetriNetUnfolderBase]: For 726332/726340 co-relation queries the response was YES. [2024-06-28 04:26:08,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74048 conditions, 8001 events. 5146/8001 cut-off events. For 726332/726340 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 49025 event pairs, 1079 based on Foata normal form. 20/8020 useless extension candidates. Maximal degree in co-relation 73855. Up to 7537 conditions per place. [2024-06-28 04:26:08,537 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 580 selfloop transitions, 74 changer transitions 0/657 dead transitions. [2024-06-28 04:26:08,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 657 transitions, 13463 flow [2024-06-28 04:26:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:26:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:26:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 04:26:08,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2024-06-28 04:26:08,539 INFO L175 Difference]: Start difference. First operand has 418 places, 611 transitions, 11886 flow. Second operand 11 states and 177 transitions. [2024-06-28 04:26:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 657 transitions, 13463 flow [2024-06-28 04:26:10,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 657 transitions, 13155 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 04:26:10,978 INFO L231 Difference]: Finished difference. Result has 420 places, 614 transitions, 11840 flow [2024-06-28 04:26:10,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11580, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11840, PETRI_PLACES=420, PETRI_TRANSITIONS=614} [2024-06-28 04:26:10,978 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-28 04:26:10,979 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 614 transitions, 11840 flow [2024-06-28 04:26:10,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:26:10,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:10,979 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 04:26:10,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:26:10,979 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 04:26:10,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash -385083423, now seen corresponding path program 3 times [2024-06-28 04:26:10,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181436523] [2024-06-28 04:26:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:11,518 INFO 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 04:26:11,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:11,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181436523] [2024-06-28 04:26:11,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181436523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:11,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:11,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:11,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794155732] [2024-06-28 04:26:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:11,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:11,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:11,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:11,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:11,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:11,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 614 transitions, 11840 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:11,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:11,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:11,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:13,871 INFO L124 PetriNetUnfolderBase]: 5134/7985 cut-off events. [2024-06-28 04:26:13,872 INFO L125 PetriNetUnfolderBase]: For 699629/699637 co-relation queries the response was YES. [2024-06-28 04:26:13,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73352 conditions, 7985 events. 5134/7985 cut-off events. For 699629/699637 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 48814 event pairs, 1151 based on Foata normal form. 12/7996 useless extension candidates. Maximal degree in co-relation 73158. Up to 7597 conditions per place. [2024-06-28 04:26:13,986 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 527 selfloop transitions, 113 changer transitions 0/643 dead transitions. [2024-06-28 04:26:13,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 643 transitions, 13400 flow [2024-06-28 04:26:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:26:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:26:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 04:26:13,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 04:26:13,987 INFO L175 Difference]: Start difference. First operand has 420 places, 614 transitions, 11840 flow. Second operand 9 states and 151 transitions. [2024-06-28 04:26:13,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 643 transitions, 13400 flow [2024-06-28 04:26:16,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 643 transitions, 13180 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-28 04:26:16,075 INFO L231 Difference]: Finished difference. Result has 420 places, 614 transitions, 11855 flow [2024-06-28 04:26:16,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11620, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11855, PETRI_PLACES=420, PETRI_TRANSITIONS=614} [2024-06-28 04:26:16,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-28 04:26:16,076 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 614 transitions, 11855 flow [2024-06-28 04:26:16,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:16,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:16,076 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 04:26:16,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:26:16,076 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:16,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1666439451, now seen corresponding path program 6 times [2024-06-28 04:26:16,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074088027] [2024-06-28 04:26:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:17,117 INFO 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 04:26:17,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074088027] [2024-06-28 04:26:17,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074088027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:17,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:17,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:26:17,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739379800] [2024-06-28 04:26:17,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:17,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:26:17,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:26:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:26:17,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:17,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 614 transitions, 11855 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:26:17,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:17,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:17,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:19,496 INFO L124 PetriNetUnfolderBase]: 5175/8058 cut-off events. [2024-06-28 04:26:19,496 INFO L125 PetriNetUnfolderBase]: For 741645/741653 co-relation queries the response was YES. [2024-06-28 04:26:19,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73851 conditions, 8058 events. 5175/8058 cut-off events. For 741645/741653 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 49330 event pairs, 1031 based on Foata normal form. 20/8077 useless extension candidates. Maximal degree in co-relation 73656. Up to 7052 conditions per place. [2024-06-28 04:26:19,612 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 550 selfloop transitions, 102 changer transitions 0/655 dead transitions. [2024-06-28 04:26:19,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 655 transitions, 13393 flow [2024-06-28 04:26:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:26:19,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:26:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 04:26:19,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-28 04:26:19,613 INFO L175 Difference]: Start difference. First operand has 420 places, 614 transitions, 11855 flow. Second operand 10 states and 159 transitions. [2024-06-28 04:26:19,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 655 transitions, 13393 flow [2024-06-28 04:26:21,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 655 transitions, 13219 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:21,986 INFO L231 Difference]: Finished difference. Result has 425 places, 615 transitions, 11971 flow [2024-06-28 04:26:21,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11681, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11971, PETRI_PLACES=425, PETRI_TRANSITIONS=615} [2024-06-28 04:26:21,986 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-28 04:26:21,987 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 615 transitions, 11971 flow [2024-06-28 04:26:21,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:26:21,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:21,987 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 04:26:21,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:26:21,987 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:21,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1608347001, now seen corresponding path program 7 times [2024-06-28 04:26:21,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:21,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183403441] [2024-06-28 04:26:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:23,027 INFO 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 04:26:23,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:23,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183403441] [2024-06-28 04:26:23,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183403441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:23,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:23,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:26:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605609904] [2024-06-28 04:26:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:23,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:26:23,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:23,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:26:23,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:26:23,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:23,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 615 transitions, 11971 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:26:23,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:23,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:23,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:25,441 INFO L124 PetriNetUnfolderBase]: 5257/8208 cut-off events. [2024-06-28 04:26:25,441 INFO L125 PetriNetUnfolderBase]: For 759900/759904 co-relation queries the response was YES. [2024-06-28 04:26:25,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75338 conditions, 8208 events. 5257/8208 cut-off events. For 759900/759904 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 50898 event pairs, 1364 based on Foata normal form. 16/8223 useless extension candidates. Maximal degree in co-relation 75142. Up to 7333 conditions per place. [2024-06-28 04:26:25,557 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 517 selfloop transitions, 137 changer transitions 0/657 dead transitions. [2024-06-28 04:26:25,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 657 transitions, 13533 flow [2024-06-28 04:26:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:26:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:26:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:26:25,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 04:26:25,558 INFO L175 Difference]: Start difference. First operand has 425 places, 615 transitions, 11971 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:26:25,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 657 transitions, 13533 flow [2024-06-28 04:26:28,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 657 transitions, 13271 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 04:26:28,035 INFO L231 Difference]: Finished difference. Result has 427 places, 617 transitions, 12079 flow [2024-06-28 04:26:28,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11715, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12079, PETRI_PLACES=427, PETRI_TRANSITIONS=617} [2024-06-28 04:26:28,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 386 predicate places. [2024-06-28 04:26:28,035 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 617 transitions, 12079 flow [2024-06-28 04:26:28,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 04:26:28,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:28,036 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 04:26:28,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:26:28,036 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:28,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:28,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1608231681, now seen corresponding path program 8 times [2024-06-28 04:26:28,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:28,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686378478] [2024-06-28 04:26:28,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:28,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:28,942 INFO 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 04:26:28,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:28,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686378478] [2024-06-28 04:26:28,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686378478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:28,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:28,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:26:28,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996418640] [2024-06-28 04:26:28,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:28,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:26:28,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:28,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:26:28,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:26:29,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:29,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 617 transitions, 12079 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:26:29,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:29,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:29,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:31,273 INFO L124 PetriNetUnfolderBase]: 5237/8166 cut-off events. [2024-06-28 04:26:31,273 INFO L125 PetriNetUnfolderBase]: For 689015/689023 co-relation queries the response was YES. [2024-06-28 04:26:31,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73603 conditions, 8166 events. 5237/8166 cut-off events. For 689015/689023 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 50323 event pairs, 1111 based on Foata normal form. 20/8185 useless extension candidates. Maximal degree in co-relation 73406. Up to 7196 conditions per place. [2024-06-28 04:26:31,385 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 486 selfloop transitions, 163 changer transitions 0/652 dead transitions. [2024-06-28 04:26:31,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 652 transitions, 13553 flow [2024-06-28 04:26:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:26:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:26:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:26:31,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:26:31,386 INFO L175 Difference]: Start difference. First operand has 427 places, 617 transitions, 12079 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:26:31,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 652 transitions, 13553 flow [2024-06-28 04:26:33,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 652 transitions, 13231 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 04:26:33,257 INFO L231 Difference]: Finished difference. Result has 429 places, 618 transitions, 12161 flow [2024-06-28 04:26:33,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11757, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12161, PETRI_PLACES=429, PETRI_TRANSITIONS=618} [2024-06-28 04:26:33,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-28 04:26:33,258 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 618 transitions, 12161 flow [2024-06-28 04:26:33,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:26:33,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:33,258 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 04:26:33,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:26:33,258 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:33,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:33,258 INFO L85 PathProgramCache]: Analyzing trace with hash 204763783, now seen corresponding path program 9 times [2024-06-28 04:26:33,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:33,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401503060] [2024-06-28 04:26:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:33,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:34,211 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 04:26:34,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401503060] [2024-06-28 04:26:34,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401503060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:34,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:34,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:26:34,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455171226] [2024-06-28 04:26:34,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:34,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:26:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:26:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:26:34,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:34,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 618 transitions, 12161 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:34,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:34,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:34,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:36,452 INFO L124 PetriNetUnfolderBase]: 5278/8238 cut-off events. [2024-06-28 04:26:36,453 INFO L125 PetriNetUnfolderBase]: For 706042/706050 co-relation queries the response was YES. [2024-06-28 04:26:36,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74420 conditions, 8238 events. 5278/8238 cut-off events. For 706042/706050 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 50901 event pairs, 1080 based on Foata normal form. 20/8257 useless extension candidates. Maximal degree in co-relation 74221. Up to 6923 conditions per place. [2024-06-28 04:26:36,584 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 477 selfloop transitions, 173 changer transitions 0/653 dead transitions. [2024-06-28 04:26:36,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 653 transitions, 13673 flow [2024-06-28 04:26:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:26:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:26:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:26:36,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:26:36,585 INFO L175 Difference]: Start difference. First operand has 429 places, 618 transitions, 12161 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:26:36,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 653 transitions, 13673 flow [2024-06-28 04:26:38,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 653 transitions, 13303 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 04:26:38,558 INFO L231 Difference]: Finished difference. Result has 430 places, 619 transitions, 12217 flow [2024-06-28 04:26:38,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11791, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12217, PETRI_PLACES=430, PETRI_TRANSITIONS=619} [2024-06-28 04:26:38,558 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 389 predicate places. [2024-06-28 04:26:38,558 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 619 transitions, 12217 flow [2024-06-28 04:26:38,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:38,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:38,559 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 04:26:38,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:26:38,559 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 04:26:38,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1432301191, now seen corresponding path program 4 times [2024-06-28 04:26:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984417298] [2024-06-28 04:26:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:38,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:39,136 INFO 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 04:26:39,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984417298] [2024-06-28 04:26:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984417298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:39,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:39,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:39,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077567210] [2024-06-28 04:26:39,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:39,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:39,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 619 transitions, 12217 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:39,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:39,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:39,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:41,432 INFO L124 PetriNetUnfolderBase]: 5340/8324 cut-off events. [2024-06-28 04:26:41,432 INFO L125 PetriNetUnfolderBase]: For 698131/698139 co-relation queries the response was YES. [2024-06-28 04:26:41,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75278 conditions, 8324 events. 5340/8324 cut-off events. For 698131/698139 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 51453 event pairs, 1205 based on Foata normal form. 12/8335 useless extension candidates. Maximal degree in co-relation 75079. Up to 7895 conditions per place. [2024-06-28 04:26:41,559 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 532 selfloop transitions, 123 changer transitions 0/658 dead transitions. [2024-06-28 04:26:41,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 658 transitions, 14168 flow [2024-06-28 04:26:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:26:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:26:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:26:41,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 04:26:41,560 INFO L175 Difference]: Start difference. First operand has 430 places, 619 transitions, 12217 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:26:41,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 658 transitions, 14168 flow [2024-06-28 04:26:43,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 658 transitions, 13816 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 04:26:43,646 INFO L231 Difference]: Finished difference. Result has 433 places, 630 transitions, 12350 flow [2024-06-28 04:26:43,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11873, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12350, PETRI_PLACES=433, PETRI_TRANSITIONS=630} [2024-06-28 04:26:43,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 04:26:43,646 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 630 transitions, 12350 flow [2024-06-28 04:26:43,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:43,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:43,647 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 04:26:43,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:26:43,647 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 04:26:43,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1432312351, now seen corresponding path program 5 times [2024-06-28 04:26:43,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45193115] [2024-06-28 04:26:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:44,220 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 04:26:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45193115] [2024-06-28 04:26:44,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45193115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:44,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:44,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:44,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239299852] [2024-06-28 04:26:44,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:44,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:44,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:44,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:44,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:44,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:44,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 630 transitions, 12350 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:44,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:44,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:44,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:46,682 INFO L124 PetriNetUnfolderBase]: 5328/8308 cut-off events. [2024-06-28 04:26:46,683 INFO L125 PetriNetUnfolderBase]: For 663671/663679 co-relation queries the response was YES. [2024-06-28 04:26:46,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74183 conditions, 8308 events. 5328/8308 cut-off events. For 663671/663679 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 51387 event pairs, 1201 based on Foata normal form. 12/8319 useless extension candidates. Maximal degree in co-relation 73982. Up to 7887 conditions per place. [2024-06-28 04:26:46,820 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 515 selfloop transitions, 135 changer transitions 0/653 dead transitions. [2024-06-28 04:26:46,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 653 transitions, 13907 flow [2024-06-28 04:26:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:26:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:26:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:26:46,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:26:46,821 INFO L175 Difference]: Start difference. First operand has 433 places, 630 transitions, 12350 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:26:46,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 653 transitions, 13907 flow [2024-06-28 04:26:48,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 653 transitions, 13667 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 04:26:48,935 INFO L231 Difference]: Finished difference. Result has 436 places, 630 transitions, 12392 flow [2024-06-28 04:26:48,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12112, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12392, PETRI_PLACES=436, PETRI_TRANSITIONS=630} [2024-06-28 04:26:48,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-28 04:26:48,935 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 630 transitions, 12392 flow [2024-06-28 04:26:48,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:48,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:48,935 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 04:26:48,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:26:48,935 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:26:48,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1205298965, now seen corresponding path program 10 times [2024-06-28 04:26:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:48,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695311332] [2024-06-28 04:26:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:49,891 INFO 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 04:26:49,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695311332] [2024-06-28 04:26:49,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695311332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:49,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:49,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:26:49,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199652363] [2024-06-28 04:26:49,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:49,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:26:49,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:49,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:26:49,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:26:50,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:50,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 630 transitions, 12392 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:50,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:50,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:50,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:52,322 INFO L124 PetriNetUnfolderBase]: 5308/8278 cut-off events. [2024-06-28 04:26:52,322 INFO L125 PetriNetUnfolderBase]: For 651582/651592 co-relation queries the response was YES. [2024-06-28 04:26:52,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72917 conditions, 8278 events. 5308/8278 cut-off events. For 651582/651592 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 51132 event pairs, 1115 based on Foata normal form. 22/8296 useless extension candidates. Maximal degree in co-relation 72716. Up to 7405 conditions per place. [2024-06-28 04:26:52,447 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 506 selfloop transitions, 155 changer transitions 0/664 dead transitions. [2024-06-28 04:26:52,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 664 transitions, 13759 flow [2024-06-28 04:26:52,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:26:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:26:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:26:52,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 04:26:52,448 INFO L175 Difference]: Start difference. First operand has 436 places, 630 transitions, 12392 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:26:52,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 664 transitions, 13759 flow [2024-06-28 04:26:55,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 664 transitions, 13551 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 04:26:55,119 INFO L231 Difference]: Finished difference. Result has 439 places, 631 transitions, 12411 flow [2024-06-28 04:26:55,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12040, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12411, PETRI_PLACES=439, PETRI_TRANSITIONS=631} [2024-06-28 04:26:55,119 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 04:26:55,119 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 631 transitions, 12411 flow [2024-06-28 04:26:55,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:55,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:26:55,119 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 04:26:55,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:26:55,119 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 04:26:55,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:26:55,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1890143755, now seen corresponding path program 6 times [2024-06-28 04:26:55,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:26:55,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60706825] [2024-06-28 04:26:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:26:55,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:26:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:26:55,694 INFO 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 04:26:55,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:26:55,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60706825] [2024-06-28 04:26:55,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60706825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:26:55,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:26:55,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:26:55,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968328118] [2024-06-28 04:26:55,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:26:55,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:26:55,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:26:55,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:26:55,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:26:55,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:26:55,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 631 transitions, 12411 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:26:55,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:26:55,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:26:55,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:26:58,138 INFO L124 PetriNetUnfolderBase]: 5360/8348 cut-off events. [2024-06-28 04:26:58,138 INFO L125 PetriNetUnfolderBase]: For 648102/648110 co-relation queries the response was YES. [2024-06-28 04:26:58,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74041 conditions, 8348 events. 5360/8348 cut-off events. For 648102/648110 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 51561 event pairs, 1199 based on Foata normal form. 12/8359 useless extension candidates. Maximal degree in co-relation 73839. Up to 7895 conditions per place. [2024-06-28 04:26:58,253 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 526 selfloop transitions, 130 changer transitions 0/659 dead transitions. [2024-06-28 04:26:58,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 659 transitions, 14241 flow [2024-06-28 04:26:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:26:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:26:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:26:58,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:26:58,254 INFO L175 Difference]: Start difference. First operand has 439 places, 631 transitions, 12411 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:26:58,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 659 transitions, 14241 flow [2024-06-28 04:27:00,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 659 transitions, 13443 flow, removed 46 selfloop flow, removed 11 redundant places. [2024-06-28 04:27:00,260 INFO L231 Difference]: Finished difference. Result has 435 places, 637 transitions, 11995 flow [2024-06-28 04:27:00,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11613, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11995, PETRI_PLACES=435, PETRI_TRANSITIONS=637} [2024-06-28 04:27:00,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-28 04:27:00,260 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 637 transitions, 11995 flow [2024-06-28 04:27:00,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:00,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:00,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:27:00,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:27:00,261 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 04:27:00,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1126423745, now seen corresponding path program 7 times [2024-06-28 04:27:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:00,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614948047] [2024-06-28 04:27:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:00,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:00,835 INFO 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 04:27:00,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:00,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614948047] [2024-06-28 04:27:00,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614948047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:00,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:27:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918295148] [2024-06-28 04:27:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:27:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:27:00,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:27:00,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:27:00,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 637 transitions, 11995 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:00,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:00,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:27:00,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:03,057 INFO L124 PetriNetUnfolderBase]: 5348/8343 cut-off events. [2024-06-28 04:27:03,057 INFO L125 PetriNetUnfolderBase]: For 644211/644215 co-relation queries the response was YES. [2024-06-28 04:27:03,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71374 conditions, 8343 events. 5348/8343 cut-off events. For 644211/644215 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 51826 event pairs, 1540 based on Foata normal form. 8/8350 useless extension candidates. Maximal degree in co-relation 71175. Up to 7887 conditions per place. [2024-06-28 04:27:03,187 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 524 selfloop transitions, 135 changer transitions 0/662 dead transitions. [2024-06-28 04:27:03,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 662 transitions, 13577 flow [2024-06-28 04:27:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:27:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:27:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:27:03,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 04:27:03,188 INFO L175 Difference]: Start difference. First operand has 435 places, 637 transitions, 11995 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:27:03,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 662 transitions, 13577 flow [2024-06-28 04:27:05,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 662 transitions, 13383 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 04:27:05,702 INFO L231 Difference]: Finished difference. Result has 438 places, 637 transitions, 12110 flow [2024-06-28 04:27:05,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11803, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12110, PETRI_PLACES=438, PETRI_TRANSITIONS=637} [2024-06-28 04:27:05,703 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-28 04:27:05,703 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 637 transitions, 12110 flow [2024-06-28 04:27:05,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:05,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:05,703 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 04:27:05,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:27:05,704 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 04:27:05,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1113525575, now seen corresponding path program 8 times [2024-06-28 04:27:05,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:05,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349331278] [2024-06-28 04:27:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:05,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:06,315 INFO 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 04:27:06,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:06,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349331278] [2024-06-28 04:27:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349331278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:06,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:06,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:27:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571985264] [2024-06-28 04:27:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:06,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:27:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:27:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:27:06,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:27:06,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 637 transitions, 12110 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:06,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:06,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:27:06,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:08,529 INFO L124 PetriNetUnfolderBase]: 5336/8327 cut-off events. [2024-06-28 04:27:08,529 INFO L125 PetriNetUnfolderBase]: For 632821/632825 co-relation queries the response was YES. [2024-06-28 04:27:08,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70915 conditions, 8327 events. 5336/8327 cut-off events. For 632821/632825 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 51765 event pairs, 1558 based on Foata normal form. 8/8334 useless extension candidates. Maximal degree in co-relation 70716. Up to 8047 conditions per place. [2024-06-28 04:27:08,662 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 549 selfloop transitions, 106 changer transitions 0/658 dead transitions. [2024-06-28 04:27:08,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 658 transitions, 13506 flow [2024-06-28 04:27:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:27:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:27:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 04:27:08,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-28 04:27:08,663 INFO L175 Difference]: Start difference. First operand has 438 places, 637 transitions, 12110 flow. Second operand 6 states and 109 transitions. [2024-06-28 04:27:08,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 658 transitions, 13506 flow [2024-06-28 04:27:10,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 658 transitions, 13256 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 04:27:10,914 INFO L231 Difference]: Finished difference. Result has 437 places, 637 transitions, 12155 flow [2024-06-28 04:27:10,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11860, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12155, PETRI_PLACES=437, PETRI_TRANSITIONS=637} [2024-06-28 04:27:10,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-28 04:27:10,915 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 637 transitions, 12155 flow [2024-06-28 04:27:10,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:10,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:10,915 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 04:27:10,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:27:10,915 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 04:27:10,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:10,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1210618760, now seen corresponding path program 1 times [2024-06-28 04:27:10,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:10,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845578815] [2024-06-28 04:27:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:10,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:11,646 INFO 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 04:27:11,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845578815] [2024-06-28 04:27:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845578815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:11,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:11,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:27:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596916007] [2024-06-28 04:27:11,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:11,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:27:11,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:27:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:27:11,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:27:11,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 637 transitions, 12155 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 04:27:11,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:11,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:27:11,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:13,924 INFO L124 PetriNetUnfolderBase]: 5245/8246 cut-off events. [2024-06-28 04:27:13,924 INFO L125 PetriNetUnfolderBase]: For 660113/660167 co-relation queries the response was YES. [2024-06-28 04:27:14,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70901 conditions, 8246 events. 5245/8246 cut-off events. For 660113/660167 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 51890 event pairs, 1906 based on Foata normal form. 9/8221 useless extension candidates. Maximal degree in co-relation 70703. Up to 7854 conditions per place. [2024-06-28 04:27:14,047 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 555 selfloop transitions, 43 changer transitions 0/669 dead transitions. [2024-06-28 04:27:14,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 669 transitions, 13701 flow [2024-06-28 04:27:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:27:14,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:27:14,048 INFO L175 Difference]: Start difference. First operand has 437 places, 637 transitions, 12155 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:27:14,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 669 transitions, 13701 flow [2024-06-28 04:27:16,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 669 transitions, 13387 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:27:16,425 INFO L231 Difference]: Finished difference. Result has 440 places, 643 transitions, 12024 flow [2024-06-28 04:27:16,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11841, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12024, PETRI_PLACES=440, PETRI_TRANSITIONS=643} [2024-06-28 04:27:16,426 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-28 04:27:16,426 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 643 transitions, 12024 flow [2024-06-28 04:27:16,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 04:27:16,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:16,426 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 04:27:16,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:27:16,426 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 04:27:16,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1692143758, now seen corresponding path program 1 times [2024-06-28 04:27:16,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:16,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615898993] [2024-06-28 04:27:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:16,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:16,954 INFO 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 04:27:16,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:16,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615898993] [2024-06-28 04:27:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615898993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:16,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:16,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:27:16,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297559427] [2024-06-28 04:27:16,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:16,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:27:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:16,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:27:16,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:27:17,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:27:17,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 643 transitions, 12024 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:17,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:17,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:27:17,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:19,061 INFO L124 PetriNetUnfolderBase]: 5369/8365 cut-off events. [2024-06-28 04:27:19,061 INFO L125 PetriNetUnfolderBase]: For 626700/626704 co-relation queries the response was YES. [2024-06-28 04:27:19,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71682 conditions, 8365 events. 5369/8365 cut-off events. For 626700/626704 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 51845 event pairs, 1581 based on Foata normal form. 6/8370 useless extension candidates. Maximal degree in co-relation 71483. Up to 8264 conditions per place. [2024-06-28 04:27:19,414 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 629 selfloop transitions, 44 changer transitions 0/676 dead transitions. [2024-06-28 04:27:19,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 676 transitions, 13621 flow [2024-06-28 04:27:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 04:27:19,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:27:19,416 INFO L175 Difference]: Start difference. First operand has 440 places, 643 transitions, 12024 flow. Second operand 9 states and 135 transitions. [2024-06-28 04:27:19,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 676 transitions, 13621 flow [2024-06-28 04:27:21,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 676 transitions, 13533 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:27:21,623 INFO L231 Difference]: Finished difference. Result has 446 places, 656 transitions, 12262 flow [2024-06-28 04:27:21,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11936, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12262, PETRI_PLACES=446, PETRI_TRANSITIONS=656} [2024-06-28 04:27:21,623 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-28 04:27:21,623 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 656 transitions, 12262 flow [2024-06-28 04:27:21,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:21,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:21,624 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 04:27:21,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:27:21,624 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 04:27:21,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:21,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1964167604, now seen corresponding path program 2 times [2024-06-28 04:27:21,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:21,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590004798] [2024-06-28 04:27:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:22,399 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 04:27:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590004798] [2024-06-28 04:27:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590004798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:22,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:22,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:27:22,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329161469] [2024-06-28 04:27:22,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:27:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:27:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:27:22,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:27:22,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 656 transitions, 12262 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 04:27:22,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:22,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:27:22,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:24,612 INFO L124 PetriNetUnfolderBase]: 5264/8273 cut-off events. [2024-06-28 04:27:24,613 INFO L125 PetriNetUnfolderBase]: For 687322/687376 co-relation queries the response was YES. [2024-06-28 04:27:24,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72377 conditions, 8273 events. 5264/8273 cut-off events. For 687322/687376 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 52061 event pairs, 1895 based on Foata normal form. 8/8248 useless extension candidates. Maximal degree in co-relation 72174. Up to 7933 conditions per place. [2024-06-28 04:27:24,751 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 574 selfloop transitions, 35 changer transitions 0/680 dead transitions. [2024-06-28 04:27:24,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 680 transitions, 13836 flow [2024-06-28 04:27:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:24,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 04:27:24,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 04:27:24,752 INFO L175 Difference]: Start difference. First operand has 446 places, 656 transitions, 12262 flow. Second operand 9 states and 136 transitions. [2024-06-28 04:27:24,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 680 transitions, 13836 flow [2024-06-28 04:27:27,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 680 transitions, 13705 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 04:27:27,039 INFO L231 Difference]: Finished difference. Result has 451 places, 662 transitions, 12342 flow [2024-06-28 04:27:27,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12131, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12342, PETRI_PLACES=451, PETRI_TRANSITIONS=662} [2024-06-28 04:27:27,040 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 04:27:27,040 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 662 transitions, 12342 flow [2024-06-28 04:27:27,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 04:27:27,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:27,040 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 04:27:27,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:27:27,040 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 04:27:27,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1387348838, now seen corresponding path program 2 times [2024-06-28 04:27:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:27,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792106162] [2024-06-28 04:27:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:27,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:27,598 INFO 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 04:27:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792106162] [2024-06-28 04:27:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792106162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:27,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:27,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:27:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667459844] [2024-06-28 04:27:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:27:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:27,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:27:27,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:27:27,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:27:27,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 662 transitions, 12342 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:27,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:27,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:27:27,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:29,849 INFO L124 PetriNetUnfolderBase]: 5420/8436 cut-off events. [2024-06-28 04:27:29,849 INFO L125 PetriNetUnfolderBase]: For 667078/667082 co-relation queries the response was YES. [2024-06-28 04:27:29,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73613 conditions, 8436 events. 5420/8436 cut-off events. For 667078/667082 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 52324 event pairs, 1587 based on Foata normal form. 6/8441 useless extension candidates. Maximal degree in co-relation 73408. Up to 8273 conditions per place. [2024-06-28 04:27:29,977 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 632 selfloop transitions, 60 changer transitions 0/695 dead transitions. [2024-06-28 04:27:29,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 695 transitions, 14223 flow [2024-06-28 04:27:29,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:27:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:27:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:27:29,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 04:27:29,978 INFO L175 Difference]: Start difference. First operand has 451 places, 662 transitions, 12342 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:27:29,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 695 transitions, 14223 flow [2024-06-28 04:27:32,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 695 transitions, 14137 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:27:32,174 INFO L231 Difference]: Finished difference. Result has 454 places, 674 transitions, 12642 flow [2024-06-28 04:27:32,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12256, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12642, PETRI_PLACES=454, PETRI_TRANSITIONS=674} [2024-06-28 04:27:32,174 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-28 04:27:32,174 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 674 transitions, 12642 flow [2024-06-28 04:27:32,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:32,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:32,175 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 04:27:32,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:27:32,175 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 04:27:32,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1113333220, now seen corresponding path program 1 times [2024-06-28 04:27:32,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:32,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617264696] [2024-06-28 04:27:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:32,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:32,970 INFO 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 04:27:32,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:32,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617264696] [2024-06-28 04:27:32,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617264696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:32,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:32,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392149388] [2024-06-28 04:27:32,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:32,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:32,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:32,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:33,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:27:33,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 674 transitions, 12642 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:27:33,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:33,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:27:33,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:35,277 INFO L124 PetriNetUnfolderBase]: 5417/8444 cut-off events. [2024-06-28 04:27:35,277 INFO L125 PetriNetUnfolderBase]: For 680466/680466 co-relation queries the response was YES. [2024-06-28 04:27:35,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73923 conditions, 8444 events. 5417/8444 cut-off events. For 680466/680466 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 52494 event pairs, 1957 based on Foata normal form. 1/8444 useless extension candidates. Maximal degree in co-relation 73717. Up to 8350 conditions per place. [2024-06-28 04:27:35,410 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 655 selfloop transitions, 27 changer transitions 0/685 dead transitions. [2024-06-28 04:27:35,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 685 transitions, 14056 flow [2024-06-28 04:27:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:27:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:27:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 04:27:35,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:27:35,411 INFO L175 Difference]: Start difference. First operand has 454 places, 674 transitions, 12642 flow. Second operand 5 states and 85 transitions. [2024-06-28 04:27:35,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 685 transitions, 14056 flow [2024-06-28 04:27:38,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 685 transitions, 13876 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-06-28 04:27:38,085 INFO L231 Difference]: Finished difference. Result has 456 places, 674 transitions, 12537 flow [2024-06-28 04:27:38,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12462, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12537, PETRI_PLACES=456, PETRI_TRANSITIONS=674} [2024-06-28 04:27:38,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-28 04:27:38,085 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 674 transitions, 12537 flow [2024-06-28 04:27:38,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:27:38,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:38,085 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 04:27:38,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:27:38,086 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 04:27:38,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1120698262, now seen corresponding path program 3 times [2024-06-28 04:27:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866610274] [2024-06-28 04:27:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:38,861 INFO 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 04:27:38,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:38,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866610274] [2024-06-28 04:27:38,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866610274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:38,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:38,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964452942] [2024-06-28 04:27:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:38,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:38,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:38,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:27:38,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 674 transitions, 12537 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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 04:27:38,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:38,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:27:38,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:41,306 INFO L124 PetriNetUnfolderBase]: 5293/8314 cut-off events. [2024-06-28 04:27:41,306 INFO L125 PetriNetUnfolderBase]: For 718821/718848 co-relation queries the response was YES. [2024-06-28 04:27:41,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73368 conditions, 8314 events. 5293/8314 cut-off events. For 718821/718848 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 52280 event pairs, 1900 based on Foata normal form. 9/8290 useless extension candidates. Maximal degree in co-relation 73160. Up to 7962 conditions per place. [2024-06-28 04:27:41,434 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 592 selfloop transitions, 30 changer transitions 0/695 dead transitions. [2024-06-28 04:27:41,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 695 transitions, 13883 flow [2024-06-28 04:27:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:27:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:27:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:27:41,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:27:41,435 INFO L175 Difference]: Start difference. First operand has 456 places, 674 transitions, 12537 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:27:41,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 695 transitions, 13883 flow [2024-06-28 04:27:43,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 695 transitions, 13809 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 04:27:43,831 INFO L231 Difference]: Finished difference. Result has 459 places, 674 transitions, 12533 flow [2024-06-28 04:27:43,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12463, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12533, PETRI_PLACES=459, PETRI_TRANSITIONS=674} [2024-06-28 04:27:43,831 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-28 04:27:43,832 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 674 transitions, 12533 flow [2024-06-28 04:27:43,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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 04:27:43,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:43,832 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 04:27:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:27:43,832 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 04:27:43,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:43,832 INFO L85 PathProgramCache]: Analyzing trace with hash -148513590, now seen corresponding path program 1 times [2024-06-28 04:27:43,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:43,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577809222] [2024-06-28 04:27:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:27:44,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:44,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577809222] [2024-06-28 04:27:44,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577809222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:44,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:44,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:27:44,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474906364] [2024-06-28 04:27:44,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:44,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:27:44,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:44,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:27:44,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:27:44,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:27:44,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 674 transitions, 12533 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 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 04:27:44,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:44,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:27:44,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:47,083 INFO L124 PetriNetUnfolderBase]: 5297/8308 cut-off events. [2024-06-28 04:27:47,083 INFO L125 PetriNetUnfolderBase]: For 732742/732778 co-relation queries the response was YES. [2024-06-28 04:27:47,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72969 conditions, 8308 events. 5297/8308 cut-off events. For 732742/732778 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 52051 event pairs, 1158 based on Foata normal form. 50/8326 useless extension candidates. Maximal degree in co-relation 72760. Up to 7651 conditions per place. [2024-06-28 04:27:47,208 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 516 selfloop transitions, 142 changer transitions 0/704 dead transitions. [2024-06-28 04:27:47,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 704 transitions, 14025 flow [2024-06-28 04:27:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:27:47,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:27:47,209 INFO L175 Difference]: Start difference. First operand has 459 places, 674 transitions, 12533 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:27:47,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 704 transitions, 14025 flow [2024-06-28 04:27:49,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 704 transitions, 13955 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:27:49,776 INFO L231 Difference]: Finished difference. Result has 462 places, 675 transitions, 12775 flow [2024-06-28 04:27:49,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12463, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12775, PETRI_PLACES=462, PETRI_TRANSITIONS=675} [2024-06-28 04:27:49,776 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-28 04:27:49,776 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 675 transitions, 12775 flow [2024-06-28 04:27:49,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 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 04:27:49,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:49,777 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 04:27:49,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:27:49,777 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 04:27:49,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1628620212, now seen corresponding path program 1 times [2024-06-28 04:27:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:49,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161739529] [2024-06-28 04:27:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:49,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:50,342 INFO 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 04:27:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161739529] [2024-06-28 04:27:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161739529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:50,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:27:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475501301] [2024-06-28 04:27:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:50,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:27:50,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:27:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:27:50,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:27:50,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 675 transitions, 12775 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:50,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:50,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:27:50,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:52,753 INFO L124 PetriNetUnfolderBase]: 5473/8518 cut-off events. [2024-06-28 04:27:52,754 INFO L125 PetriNetUnfolderBase]: For 708590/708594 co-relation queries the response was YES. [2024-06-28 04:27:52,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75224 conditions, 8518 events. 5473/8518 cut-off events. For 708590/708594 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 52852 event pairs, 1598 based on Foata normal form. 5/8522 useless extension candidates. Maximal degree in co-relation 75014. Up to 8402 conditions per place. [2024-06-28 04:27:52,881 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 658 selfloop transitions, 46 changer transitions 0/707 dead transitions. [2024-06-28 04:27:52,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 707 transitions, 14683 flow [2024-06-28 04:27:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:27:52,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-28 04:27:52,882 INFO L175 Difference]: Start difference. First operand has 462 places, 675 transitions, 12775 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:27:52,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 707 transitions, 14683 flow [2024-06-28 04:27:55,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 707 transitions, 14454 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 04:27:55,424 INFO L231 Difference]: Finished difference. Result has 465 places, 681 transitions, 12874 flow [2024-06-28 04:27:55,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12546, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12874, PETRI_PLACES=465, PETRI_TRANSITIONS=681} [2024-06-28 04:27:55,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-28 04:27:55,425 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 681 transitions, 12874 flow [2024-06-28 04:27:55,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:55,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:27:55,425 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 04:27:55,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:27:55,425 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 04:27:55,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:27:55,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1628740182, now seen corresponding path program 2 times [2024-06-28 04:27:55,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:27:55,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458850828] [2024-06-28 04:27:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:27:55,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:27:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:27:56,080 INFO 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 04:27:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:27:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458850828] [2024-06-28 04:27:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458850828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:27:56,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:27:56,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:27:56,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684586850] [2024-06-28 04:27:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:27:56,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:27:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:27:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:27:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:27:56,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:27:56,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 681 transitions, 12874 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:27:56,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:27:56,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:27:56,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:27:58,333 INFO L124 PetriNetUnfolderBase]: 5478/8525 cut-off events. [2024-06-28 04:27:58,333 INFO L125 PetriNetUnfolderBase]: For 723141/723145 co-relation queries the response was YES. [2024-06-28 04:27:58,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75431 conditions, 8525 events. 5478/8525 cut-off events. For 723141/723145 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 52926 event pairs, 1598 based on Foata normal form. 5/8529 useless extension candidates. Maximal degree in co-relation 75220. Up to 8424 conditions per place. [2024-06-28 04:27:58,475 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 662 selfloop transitions, 41 changer transitions 0/706 dead transitions. [2024-06-28 04:27:58,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 706 transitions, 14480 flow [2024-06-28 04:27:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:27:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:27:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 04:27:58,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-28 04:27:58,477 INFO L175 Difference]: Start difference. First operand has 465 places, 681 transitions, 12874 flow. Second operand 9 states and 137 transitions. [2024-06-28 04:27:58,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 706 transitions, 14480 flow [2024-06-28 04:28:01,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 706 transitions, 14252 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-28 04:28:01,310 INFO L231 Difference]: Finished difference. Result has 468 places, 684 transitions, 12858 flow [2024-06-28 04:28:01,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12658, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12858, PETRI_PLACES=468, PETRI_TRANSITIONS=684} [2024-06-28 04:28:01,310 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 427 predicate places. [2024-06-28 04:28:01,310 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 684 transitions, 12858 flow [2024-06-28 04:28:01,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:01,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:01,310 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 04:28:01,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:28:01,311 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 04:28:01,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1667775898, now seen corresponding path program 3 times [2024-06-28 04:28:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041540712] [2024-06-28 04:28:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:01,919 INFO 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 04:28:01,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041540712] [2024-06-28 04:28:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041540712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:01,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:01,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:28:01,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964959368] [2024-06-28 04:28:01,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:01,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:28:01,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:28:01,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:28:01,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:01,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 684 transitions, 12858 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:28:01,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:01,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:01,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:04,175 INFO L124 PetriNetUnfolderBase]: 5488/8539 cut-off events. [2024-06-28 04:28:04,176 INFO L125 PetriNetUnfolderBase]: For 741285/741289 co-relation queries the response was YES. [2024-06-28 04:28:04,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75690 conditions, 8539 events. 5488/8539 cut-off events. For 741285/741289 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 52955 event pairs, 1597 based on Foata normal form. 6/8544 useless extension candidates. Maximal degree in co-relation 75477. Up to 8427 conditions per place. [2024-06-28 04:28:04,316 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 657 selfloop transitions, 48 changer transitions 0/708 dead transitions. [2024-06-28 04:28:04,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 708 transitions, 14426 flow [2024-06-28 04:28:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:04,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:04,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 04:28:04,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 04:28:04,317 INFO L175 Difference]: Start difference. First operand has 468 places, 684 transitions, 12858 flow. Second operand 9 states and 138 transitions. [2024-06-28 04:28:04,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 708 transitions, 14426 flow [2024-06-28 04:28:07,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 708 transitions, 14254 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 04:28:07,073 INFO L231 Difference]: Finished difference. Result has 471 places, 687 transitions, 12870 flow [2024-06-28 04:28:07,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12686, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12870, PETRI_PLACES=471, PETRI_TRANSITIONS=687} [2024-06-28 04:28:07,074 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-28 04:28:07,074 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 687 transitions, 12870 flow [2024-06-28 04:28:07,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:28:07,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:07,074 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 04:28:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:28:07,074 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 04:28:07,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 950402562, now seen corresponding path program 3 times [2024-06-28 04:28:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:07,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208135906] [2024-06-28 04:28:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:07,677 INFO 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 04:28:07,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:07,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208135906] [2024-06-28 04:28:07,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208135906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:07,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:07,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:28:07,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021308516] [2024-06-28 04:28:07,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:07,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:28:07,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:28:07,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:28:07,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:07,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 687 transitions, 12870 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:28:07,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:07,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:07,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:10,043 INFO L124 PetriNetUnfolderBase]: 5485/8535 cut-off events. [2024-06-28 04:28:10,044 INFO L125 PetriNetUnfolderBase]: For 746218/746222 co-relation queries the response was YES. [2024-06-28 04:28:10,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75647 conditions, 8535 events. 5485/8535 cut-off events. For 746218/746222 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 52974 event pairs, 1592 based on Foata normal form. 5/8539 useless extension candidates. Maximal degree in co-relation 75433. Up to 8449 conditions per place. [2024-06-28 04:28:10,186 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 666 selfloop transitions, 37 changer transitions 0/706 dead transitions. [2024-06-28 04:28:10,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 706 transitions, 14342 flow [2024-06-28 04:28:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 04:28:10,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 04:28:10,187 INFO L175 Difference]: Start difference. First operand has 471 places, 687 transitions, 12870 flow. Second operand 9 states and 132 transitions. [2024-06-28 04:28:10,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 706 transitions, 14342 flow [2024-06-28 04:28:13,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 706 transitions, 14108 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-28 04:28:13,419 INFO L231 Difference]: Finished difference. Result has 473 places, 687 transitions, 12716 flow [2024-06-28 04:28:13,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12636, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12716, PETRI_PLACES=473, PETRI_TRANSITIONS=687} [2024-06-28 04:28:13,419 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-28 04:28:13,419 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 687 transitions, 12716 flow [2024-06-28 04:28:13,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:28:13,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:13,419 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 04:28:13,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:28:13,420 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 04:28:13,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:13,420 INFO L85 PathProgramCache]: Analyzing trace with hash 213236790, now seen corresponding path program 4 times [2024-06-28 04:28:13,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:13,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594416021] [2024-06-28 04:28:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:13,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:13,994 INFO 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 04:28:13,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:13,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594416021] [2024-06-28 04:28:13,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594416021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:13,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:13,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:28:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508042005] [2024-06-28 04:28:13,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:13,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:28:13,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:28:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:28:14,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:14,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 687 transitions, 12716 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:14,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:14,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:14,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:16,405 INFO L124 PetriNetUnfolderBase]: 5498/8553 cut-off events. [2024-06-28 04:28:16,406 INFO L125 PetriNetUnfolderBase]: For 764455/764459 co-relation queries the response was YES. [2024-06-28 04:28:16,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75973 conditions, 8553 events. 5498/8553 cut-off events. For 764455/764459 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 53076 event pairs, 1598 based on Foata normal form. 5/8557 useless extension candidates. Maximal degree in co-relation 75759. Up to 8402 conditions per place. [2024-06-28 04:28:16,558 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 648 selfloop transitions, 64 changer transitions 0/715 dead transitions. [2024-06-28 04:28:16,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 715 transitions, 14648 flow [2024-06-28 04:28:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:28:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:28:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:28:16,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 04:28:16,559 INFO L175 Difference]: Start difference. First operand has 473 places, 687 transitions, 12716 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:28:16,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 715 transitions, 14648 flow [2024-06-28 04:28:19,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 715 transitions, 14530 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 04:28:19,573 INFO L231 Difference]: Finished difference. Result has 472 places, 693 transitions, 12978 flow [2024-06-28 04:28:19,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12598, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12978, PETRI_PLACES=472, PETRI_TRANSITIONS=693} [2024-06-28 04:28:19,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-28 04:28:19,574 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 693 transitions, 12978 flow [2024-06-28 04:28:19,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:19,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:19,574 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 04:28:19,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:28:19,575 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 04:28:19,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1387349024, now seen corresponding path program 5 times [2024-06-28 04:28:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108577113] [2024-06-28 04:28:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:19,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:20,210 INFO 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 04:28:20,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:20,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108577113] [2024-06-28 04:28:20,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108577113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:20,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:20,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:28:20,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32236737] [2024-06-28 04:28:20,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:20,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:28:20,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:20,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:28:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:28:20,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:20,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 693 transitions, 12978 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:20,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:20,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:20,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:22,887 INFO L124 PetriNetUnfolderBase]: 5525/8591 cut-off events. [2024-06-28 04:28:22,887 INFO L125 PetriNetUnfolderBase]: For 782824/782828 co-relation queries the response was YES. [2024-06-28 04:28:22,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76882 conditions, 8591 events. 5525/8591 cut-off events. For 782824/782828 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 53282 event pairs, 1599 based on Foata normal form. 5/8594 useless extension candidates. Maximal degree in co-relation 76667. Up to 8479 conditions per place. [2024-06-28 04:28:23,030 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 669 selfloop transitions, 52 changer transitions 0/724 dead transitions. [2024-06-28 04:28:23,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 724 transitions, 14815 flow [2024-06-28 04:28:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-28 04:28:23,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 04:28:23,032 INFO L175 Difference]: Start difference. First operand has 472 places, 693 transitions, 12978 flow. Second operand 9 states and 129 transitions. [2024-06-28 04:28:23,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 724 transitions, 14815 flow [2024-06-28 04:28:26,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 724 transitions, 14611 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-28 04:28:26,577 INFO L231 Difference]: Finished difference. Result has 478 places, 708 transitions, 13280 flow [2024-06-28 04:28:26,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12794, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13280, PETRI_PLACES=478, PETRI_TRANSITIONS=708} [2024-06-28 04:28:26,577 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 437 predicate places. [2024-06-28 04:28:26,578 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 708 transitions, 13280 flow [2024-06-28 04:28:26,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:26,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:26,578 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 04:28:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:28:26,578 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 04:28:26,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash 390725616, now seen corresponding path program 4 times [2024-06-28 04:28:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:26,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850485392] [2024-06-28 04:28:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:26,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:27,209 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 04:28:27,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:27,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850485392] [2024-06-28 04:28:27,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850485392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:27,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:27,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:28:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690020288] [2024-06-28 04:28:27,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:28:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:28:27,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:28:27,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:27,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 708 transitions, 13280 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:27,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:27,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:27,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:29,989 INFO L124 PetriNetUnfolderBase]: 5535/8605 cut-off events. [2024-06-28 04:28:29,992 INFO L125 PetriNetUnfolderBase]: For 783849/783853 co-relation queries the response was YES. [2024-06-28 04:28:30,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76868 conditions, 8605 events. 5535/8605 cut-off events. For 783849/783853 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 53378 event pairs, 1599 based on Foata normal form. 6/8610 useless extension candidates. Maximal degree in co-relation 76650. Up to 8498 conditions per place. [2024-06-28 04:28:30,134 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 677 selfloop transitions, 48 changer transitions 0/728 dead transitions. [2024-06-28 04:28:30,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 728 transitions, 14879 flow [2024-06-28 04:28:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:28:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:28:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 04:28:30,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:28:30,135 INFO L175 Difference]: Start difference. First operand has 478 places, 708 transitions, 13280 flow. Second operand 8 states and 120 transitions. [2024-06-28 04:28:30,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 728 transitions, 14879 flow [2024-06-28 04:28:33,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 728 transitions, 14650 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 04:28:33,514 INFO L231 Difference]: Finished difference. Result has 478 places, 712 transitions, 13250 flow [2024-06-28 04:28:33,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13051, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13250, PETRI_PLACES=478, PETRI_TRANSITIONS=712} [2024-06-28 04:28:33,515 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 437 predicate places. [2024-06-28 04:28:33,515 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 712 transitions, 13250 flow [2024-06-28 04:28:33,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:33,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:33,515 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 04:28:33,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 04:28:33,516 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 04:28:33,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:33,516 INFO L85 PathProgramCache]: Analyzing trace with hash 390488280, now seen corresponding path program 6 times [2024-06-28 04:28:33,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:33,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952971984] [2024-06-28 04:28:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:34,179 INFO 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 04:28:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952971984] [2024-06-28 04:28:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952971984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:34,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:34,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:28:34,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819444515] [2024-06-28 04:28:34,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:34,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:28:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:34,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:28:34,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:28:34,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:34,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 712 transitions, 13250 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:28:34,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:34,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:34,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:37,020 INFO L124 PetriNetUnfolderBase]: 5550/8626 cut-off events. [2024-06-28 04:28:37,020 INFO L125 PetriNetUnfolderBase]: For 794522/794526 co-relation queries the response was YES. [2024-06-28 04:28:37,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77115 conditions, 8626 events. 5550/8626 cut-off events. For 794522/794526 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 53482 event pairs, 1600 based on Foata normal form. 5/8629 useless extension candidates. Maximal degree in co-relation 76898. Up to 8536 conditions per place. [2024-06-28 04:28:37,167 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 689 selfloop transitions, 42 changer transitions 0/734 dead transitions. [2024-06-28 04:28:37,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 734 transitions, 14938 flow [2024-06-28 04:28:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:28:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:28:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 04:28:37,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-28 04:28:37,168 INFO L175 Difference]: Start difference. First operand has 478 places, 712 transitions, 13250 flow. Second operand 9 states and 125 transitions. [2024-06-28 04:28:37,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 734 transitions, 14938 flow [2024-06-28 04:28:40,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 734 transitions, 14816 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 04:28:40,347 INFO L231 Difference]: Finished difference. Result has 484 places, 721 transitions, 13432 flow [2024-06-28 04:28:40,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13128, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13432, PETRI_PLACES=484, PETRI_TRANSITIONS=721} [2024-06-28 04:28:40,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-28 04:28:40,348 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 721 transitions, 13432 flow [2024-06-28 04:28:40,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:28:40,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:40,348 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 04:28:40,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 04:28:40,348 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 04:28:40,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:40,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1382707208, now seen corresponding path program 5 times [2024-06-28 04:28:40,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:40,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422672033] [2024-06-28 04:28:40,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:40,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:41,014 INFO 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 04:28:41,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:41,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422672033] [2024-06-28 04:28:41,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422672033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:41,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:41,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:28:41,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14212329] [2024-06-28 04:28:41,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:41,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:28:41,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:28:41,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:28:41,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:41,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 721 transitions, 13432 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:28:41,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:41,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:41,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:43,711 INFO L124 PetriNetUnfolderBase]: 5560/8640 cut-off events. [2024-06-28 04:28:43,712 INFO L125 PetriNetUnfolderBase]: For 813478/813482 co-relation queries the response was YES. [2024-06-28 04:28:43,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77379 conditions, 8640 events. 5560/8640 cut-off events. For 813478/813482 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 53591 event pairs, 1597 based on Foata normal form. 6/8645 useless extension candidates. Maximal degree in co-relation 77160. Up to 8510 conditions per place. [2024-06-28 04:28:43,855 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 678 selfloop transitions, 60 changer transitions 0/741 dead transitions. [2024-06-28 04:28:43,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 741 transitions, 15066 flow [2024-06-28 04:28:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:28:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:28:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 04:28:43,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 04:28:43,856 INFO L175 Difference]: Start difference. First operand has 484 places, 721 transitions, 13432 flow. Second operand 8 states and 123 transitions. [2024-06-28 04:28:43,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 741 transitions, 15066 flow [2024-06-28 04:28:46,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 741 transitions, 14876 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 04:28:47,009 INFO L231 Difference]: Finished difference. Result has 486 places, 724 transitions, 13467 flow [2024-06-28 04:28:47,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13242, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13467, PETRI_PLACES=486, PETRI_TRANSITIONS=724} [2024-06-28 04:28:47,009 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-28 04:28:47,009 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 724 transitions, 13467 flow [2024-06-28 04:28:47,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:28:47,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:47,009 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 04:28:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 04:28:47,010 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 04:28:47,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1209971240, now seen corresponding path program 1 times [2024-06-28 04:28:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565294988] [2024-06-28 04:28:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:47,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:47,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:47,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565294988] [2024-06-28 04:28:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565294988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:47,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:47,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:28:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752123938] [2024-06-28 04:28:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:47,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:28:47,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:47,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:28:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:28:48,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:48,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 724 transitions, 13467 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 04:28:48,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:48,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:48,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:50,939 INFO L124 PetriNetUnfolderBase]: 5568/8652 cut-off events. [2024-06-28 04:28:50,939 INFO L125 PetriNetUnfolderBase]: For 828132/828136 co-relation queries the response was YES. [2024-06-28 04:28:51,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77628 conditions, 8652 events. 5568/8652 cut-off events. For 828132/828136 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 53739 event pairs, 1594 based on Foata normal form. 6/8657 useless extension candidates. Maximal degree in co-relation 77408. Up to 8528 conditions per place. [2024-06-28 04:28:51,075 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 684 selfloop transitions, 56 changer transitions 0/743 dead transitions. [2024-06-28 04:28:51,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 743 transitions, 15069 flow [2024-06-28 04:28:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:28:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:28:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-28 04:28:51,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-28 04:28:51,076 INFO L175 Difference]: Start difference. First operand has 486 places, 724 transitions, 13467 flow. Second operand 8 states and 122 transitions. [2024-06-28 04:28:51,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 743 transitions, 15069 flow [2024-06-28 04:28:54,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 743 transitions, 14880 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 04:28:54,176 INFO L231 Difference]: Finished difference. Result has 488 places, 727 transitions, 13469 flow [2024-06-28 04:28:54,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13278, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13469, PETRI_PLACES=488, PETRI_TRANSITIONS=727} [2024-06-28 04:28:54,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-28 04:28:54,177 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 727 transitions, 13469 flow [2024-06-28 04:28:54,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 04:28:54,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:54,178 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 04:28:54,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 04:28:54,178 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 04:28:54,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:54,178 INFO L85 PathProgramCache]: Analyzing trace with hash 405025674, now seen corresponding path program 7 times [2024-06-28 04:28:54,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:54,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50224728] [2024-06-28 04:28:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:54,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:54,776 INFO 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 04:28:54,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:54,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50224728] [2024-06-28 04:28:54,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50224728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:54,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:54,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:28:54,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548463042] [2024-06-28 04:28:54,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:54,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:28:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:28:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:28:54,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:28:54,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 727 transitions, 13469 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:54,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:54,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:28:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:57,455 INFO L124 PetriNetUnfolderBase]: 5581/8674 cut-off events. [2024-06-28 04:28:57,455 INFO L125 PetriNetUnfolderBase]: For 832804/832812 co-relation queries the response was YES. [2024-06-28 04:28:57,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78053 conditions, 8674 events. 5581/8674 cut-off events. For 832804/832812 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 53901 event pairs, 1605 based on Foata normal form. 9/8681 useless extension candidates. Maximal degree in co-relation 77832. Up to 8415 conditions per place. [2024-06-28 04:28:57,612 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 658 selfloop transitions, 104 changer transitions 0/765 dead transitions. [2024-06-28 04:28:57,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 765 transitions, 16098 flow [2024-06-28 04:28:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:28:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:28:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 04:28:57,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 04:28:57,613 INFO L175 Difference]: Start difference. First operand has 488 places, 727 transitions, 13469 flow. Second operand 8 states and 129 transitions. [2024-06-28 04:28:57,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 765 transitions, 16098 flow [2024-06-28 04:29:00,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 765 transitions, 15935 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:00,993 INFO L231 Difference]: Finished difference. Result has 491 places, 743 transitions, 14051 flow [2024-06-28 04:29:00,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13306, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14051, PETRI_PLACES=491, PETRI_TRANSITIONS=743} [2024-06-28 04:29:00,993 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-28 04:29:00,993 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 743 transitions, 14051 flow [2024-06-28 04:29:00,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:00,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:00,993 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 04:29:00,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 04:29:00,994 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 04:29:00,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1019645584, now seen corresponding path program 6 times [2024-06-28 04:29:00,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:00,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770423831] [2024-06-28 04:29:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:00,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:01,675 INFO 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 04:29:01,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770423831] [2024-06-28 04:29:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770423831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:01,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:01,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:29:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40333658] [2024-06-28 04:29:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:01,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:29:01,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:29:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:29:01,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:29:01,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 743 transitions, 14051 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:29:01,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:01,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:29:01,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:04,314 INFO L124 PetriNetUnfolderBase]: 5604/8706 cut-off events. [2024-06-28 04:29:04,314 INFO L125 PetriNetUnfolderBase]: For 861228/861236 co-relation queries the response was YES. [2024-06-28 04:29:04,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79084 conditions, 8706 events. 5604/8706 cut-off events. For 861228/861236 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 54069 event pairs, 1606 based on Foata normal form. 10/8714 useless extension candidates. Maximal degree in co-relation 78861. Up to 8445 conditions per place. [2024-06-28 04:29:04,453 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 674 selfloop transitions, 96 changer transitions 0/773 dead transitions. [2024-06-28 04:29:04,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 773 transitions, 16290 flow [2024-06-28 04:29:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:29:04,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:29:04,454 INFO L175 Difference]: Start difference. First operand has 491 places, 743 transitions, 14051 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:29:04,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 773 transitions, 16290 flow [2024-06-28 04:29:08,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 773 transitions, 16099 flow, removed 83 selfloop flow, removed 2 redundant places. [2024-06-28 04:29:08,221 INFO L231 Difference]: Finished difference. Result has 498 places, 752 transitions, 14289 flow [2024-06-28 04:29:08,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13864, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14289, PETRI_PLACES=498, PETRI_TRANSITIONS=752} [2024-06-28 04:29:08,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-28 04:29:08,222 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 752 transitions, 14289 flow [2024-06-28 04:29:08,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:29:08,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:08,222 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 04:29:08,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 04:29:08,222 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 04:29:08,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash 405145644, now seen corresponding path program 8 times [2024-06-28 04:29:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:08,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039499665] [2024-06-28 04:29:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:08,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:08,836 INFO 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 04:29:08,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:08,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039499665] [2024-06-28 04:29:08,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039499665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:08,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:08,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:08,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780099280] [2024-06-28 04:29:08,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:08,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:08,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:08,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:08,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:08,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:29:08,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 752 transitions, 14289 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:08,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:08,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:29:08,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:11,596 INFO L124 PetriNetUnfolderBase]: 5609/8713 cut-off events. [2024-06-28 04:29:11,596 INFO L125 PetriNetUnfolderBase]: For 869664/869672 co-relation queries the response was YES. [2024-06-28 04:29:11,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79397 conditions, 8713 events. 5609/8713 cut-off events. For 869664/869672 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 54182 event pairs, 1602 based on Foata normal form. 9/8720 useless extension candidates. Maximal degree in co-relation 79171. Up to 8552 conditions per place. [2024-06-28 04:29:11,739 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 698 selfloop transitions, 70 changer transitions 0/771 dead transitions. [2024-06-28 04:29:11,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 771 transitions, 15995 flow [2024-06-28 04:29:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 04:29:11,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:29:11,740 INFO L175 Difference]: Start difference. First operand has 498 places, 752 transitions, 14289 flow. Second operand 8 states and 120 transitions. [2024-06-28 04:29:11,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 771 transitions, 15995 flow [2024-06-28 04:29:15,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 771 transitions, 15720 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:15,220 INFO L231 Difference]: Finished difference. Result has 502 places, 755 transitions, 14272 flow [2024-06-28 04:29:15,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14014, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14272, PETRI_PLACES=502, PETRI_TRANSITIONS=755} [2024-06-28 04:29:15,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-28 04:29:15,221 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 755 transitions, 14272 flow [2024-06-28 04:29:15,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:15,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:15,221 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 04:29:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 04:29:15,221 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 04:29:15,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 632926824, now seen corresponding path program 9 times [2024-06-28 04:29:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:15,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140916743] [2024-06-28 04:29:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:15,924 INFO 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 04:29:15,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:15,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140916743] [2024-06-28 04:29:15,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140916743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:15,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:15,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:15,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143523701] [2024-06-28 04:29:15,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:15,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:15,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:15,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:29:15,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 755 transitions, 14272 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:15,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:15,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:29:15,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:18,573 INFO L124 PetriNetUnfolderBase]: 5614/8720 cut-off events. [2024-06-28 04:29:18,573 INFO L125 PetriNetUnfolderBase]: For 881374/881382 co-relation queries the response was YES. [2024-06-28 04:29:18,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79218 conditions, 8720 events. 5614/8720 cut-off events. For 881374/881382 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 54198 event pairs, 1606 based on Foata normal form. 9/8727 useless extension candidates. Maximal degree in co-relation 78991. Up to 8456 conditions per place. [2024-06-28 04:29:18,715 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 653 selfloop transitions, 123 changer transitions 0/779 dead transitions. [2024-06-28 04:29:18,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 779 transitions, 16412 flow [2024-06-28 04:29:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:29:18,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 04:29:18,716 INFO L175 Difference]: Start difference. First operand has 502 places, 755 transitions, 14272 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:29:18,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 779 transitions, 16412 flow [2024-06-28 04:29:22,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 779 transitions, 16174 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 04:29:22,527 INFO L231 Difference]: Finished difference. Result has 503 places, 758 transitions, 14394 flow [2024-06-28 04:29:22,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14034, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14394, PETRI_PLACES=503, PETRI_TRANSITIONS=758} [2024-06-28 04:29:22,527 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-28 04:29:22,527 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 758 transitions, 14394 flow [2024-06-28 04:29:22,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:22,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:22,527 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 04:29:22,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 04:29:22,527 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 04:29:22,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash 644354664, now seen corresponding path program 10 times [2024-06-28 04:29:22,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:22,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869566730] [2024-06-28 04:29:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:22,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:23,176 INFO 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 04:29:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869566730] [2024-06-28 04:29:23,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869566730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:23,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737866110] [2024-06-28 04:29:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:23,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:23,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:23,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:29:23,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 758 transitions, 14394 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:23,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:23,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:29:23,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:25,777 INFO L124 PetriNetUnfolderBase]: 5619/8727 cut-off events. [2024-06-28 04:29:25,777 INFO L125 PetriNetUnfolderBase]: For 896902/896910 co-relation queries the response was YES. [2024-06-28 04:29:25,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79549 conditions, 8727 events. 5619/8727 cut-off events. For 896902/896910 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 54257 event pairs, 1604 based on Foata normal form. 9/8734 useless extension candidates. Maximal degree in co-relation 79322. Up to 8462 conditions per place. [2024-06-28 04:29:25,932 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 648 selfloop transitions, 128 changer transitions 0/779 dead transitions. [2024-06-28 04:29:25,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 779 transitions, 16367 flow [2024-06-28 04:29:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 04:29:25,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 04:29:25,934 INFO L175 Difference]: Start difference. First operand has 503 places, 758 transitions, 14394 flow. Second operand 8 states and 123 transitions. [2024-06-28 04:29:25,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 779 transitions, 16367 flow [2024-06-28 04:29:30,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 779 transitions, 16011 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:30,076 INFO L231 Difference]: Finished difference. Result has 505 places, 762 transitions, 14455 flow [2024-06-28 04:29:30,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14051, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14455, PETRI_PLACES=505, PETRI_TRANSITIONS=762} [2024-06-28 04:29:30,077 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-28 04:29:30,077 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 762 transitions, 14455 flow [2024-06-28 04:29:30,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:30,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:30,077 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 04:29:30,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 04:29:30,078 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 04:29:30,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash 759408684, now seen corresponding path program 11 times [2024-06-28 04:29:30,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:30,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040971485] [2024-06-28 04:29:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:30,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040971485] [2024-06-28 04:29:30,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040971485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:30,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:30,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:29:30,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009170815] [2024-06-28 04:29:30,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:29:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:29:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:29:30,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:29:30,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 762 transitions, 14455 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:29:30,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:30,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:29:30,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:33,687 INFO L124 PetriNetUnfolderBase]: 5637/8752 cut-off events. [2024-06-28 04:29:33,687 INFO L125 PetriNetUnfolderBase]: For 917939/917947 co-relation queries the response was YES. [2024-06-28 04:29:33,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79950 conditions, 8752 events. 5637/8752 cut-off events. For 917939/917947 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 54400 event pairs, 1604 based on Foata normal form. 9/8759 useless extension candidates. Maximal degree in co-relation 79723. Up to 8571 conditions per place. [2024-06-28 04:29:33,833 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 692 selfloop transitions, 94 changer transitions 0/789 dead transitions. [2024-06-28 04:29:33,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 789 transitions, 16597 flow [2024-06-28 04:29:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:29:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:29:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 04:29:33,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3525 [2024-06-28 04:29:33,834 INFO L175 Difference]: Start difference. First operand has 505 places, 762 transitions, 14455 flow. Second operand 10 states and 141 transitions. [2024-06-28 04:29:33,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 789 transitions, 16597 flow [2024-06-28 04:29:37,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 789 transitions, 16292 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:37,688 INFO L231 Difference]: Finished difference. Result has 513 places, 773 transitions, 14696 flow [2024-06-28 04:29:37,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14164, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14696, PETRI_PLACES=513, PETRI_TRANSITIONS=773} [2024-06-28 04:29:37,688 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 472 predicate places. [2024-06-28 04:29:37,689 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 773 transitions, 14696 flow [2024-06-28 04:29:37,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:29:37,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:37,689 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 04:29:37,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 04:29:37,689 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 04:29:37,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:37,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1351767184, now seen corresponding path program 7 times [2024-06-28 04:29:37,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:37,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436985561] [2024-06-28 04:29:37,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:37,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:38,400 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 04:29:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436985561] [2024-06-28 04:29:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436985561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:38,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:38,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:29:38,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176459186] [2024-06-28 04:29:38,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:38,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:29:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:38,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:29:38,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:29:38,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:29:38,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 773 transitions, 14696 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:29:38,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:38,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:29:38,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:41,028 INFO L124 PetriNetUnfolderBase]: 5663/8788 cut-off events. [2024-06-28 04:29:41,028 INFO L125 PetriNetUnfolderBase]: For 949975/949983 co-relation queries the response was YES. [2024-06-28 04:29:41,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80618 conditions, 8788 events. 5663/8788 cut-off events. For 949975/949983 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 54602 event pairs, 1607 based on Foata normal form. 10/8796 useless extension candidates. Maximal degree in co-relation 80388. Up to 8513 conditions per place. [2024-06-28 04:29:41,174 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 690 selfloop transitions, 105 changer transitions 0/798 dead transitions. [2024-06-28 04:29:41,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 798 transitions, 16934 flow [2024-06-28 04:29:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:29:41,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 04:29:41,175 INFO L175 Difference]: Start difference. First operand has 513 places, 773 transitions, 14696 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:29:41,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 798 transitions, 16934 flow [2024-06-28 04:29:45,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 798 transitions, 16696 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-06-28 04:29:45,598 INFO L231 Difference]: Finished difference. Result has 518 places, 779 transitions, 14830 flow [2024-06-28 04:29:45,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14458, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14830, PETRI_PLACES=518, PETRI_TRANSITIONS=779} [2024-06-28 04:29:45,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 477 predicate places. [2024-06-28 04:29:45,599 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 779 transitions, 14830 flow [2024-06-28 04:29:45,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 04:29:45,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:45,599 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 04:29:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 04:29:45,599 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 04:29:45,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash 759645834, now seen corresponding path program 12 times [2024-06-28 04:29:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:45,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495458124] [2024-06-28 04:29:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat