./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix025_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix025_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:12:11,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:12:11,307 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:12:11,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:12:11,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:12:11,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:12:11,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:12:11,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:12:11,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:12:11,357 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:12:11,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:12:11,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:12:11,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:12:11,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:12:11,360 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:12:11,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:12:11,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:12:11,361 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:12:11,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:12:11,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:12:11,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:12:11,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:12:11,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:12:11,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:12:11,363 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:12:11,363 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:12:11,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:12:11,364 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:12:11,364 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:12:11,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:12:11,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:12:11,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:12:11,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:12:11,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:12:11,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:12:11,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:12:11,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:12:11,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:12:11,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:12:11,367 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:12:11,368 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:12:11,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:12:11,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:12:11,368 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:12:11,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:12:11,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:12:11,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:12:11,621 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:12:11,622 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:12:11,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i [2024-06-28 03:12:12,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:12:13,022 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:12:13,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i [2024-06-28 03:12:13,042 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe4cac0c0/85828c68a8134839a6bcaab1288da762/FLAGd9151f096 [2024-06-28 03:12:13,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe4cac0c0/85828c68a8134839a6bcaab1288da762 [2024-06-28 03:12:13,064 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:12:13,065 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:12:13,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix025_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 03:12:13,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:12:13,245 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:12:13,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:12:13,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:12:13,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:12:13,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:12:13" (1/2) ... [2024-06-28 03:12:13,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e174167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:12:13, skipping insertion in model container [2024-06-28 03:12:13,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:12:13" (1/2) ... [2024-06-28 03:12:13,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49c37593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:12:13, skipping insertion in model container [2024-06-28 03:12:13,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:12:13" (2/2) ... [2024-06-28 03:12:13,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e174167 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:13, skipping insertion in model container [2024-06-28 03:12:13,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:12:13" (2/2) ... [2024-06-28 03:12:13,259 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:12:13,361 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:12:13,363 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:12:13,363 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:12:13,363 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:12:13,363 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:12:13,364 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-28 03:12:13,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:12:13,825 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:12:13,835 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:12:13,962 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:12:14,007 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:12:14,008 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14 WrapperNode [2024-06-28 03:12:14,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:12:14,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:12:14,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:12:14,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:12:14,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,104 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 126 [2024-06-28 03:12:14,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:12:14,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:12:14,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:12:14,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:12:14,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,161 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:12:14,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:12:14,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:12:14,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:12:14,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:12:14,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (1/1) ... [2024-06-28 03:12:14,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:12:14,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:12:14,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:12:14,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:12:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:12:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:12:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:12:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:12:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:12:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:12:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:12:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:12:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:12:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:12:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:12:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:12:14,288 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:12:14,397 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:12:14,399 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:12:14,772 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:12:14,772 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:12:14,954 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:12:14,955 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:12:14,956 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:12:14 BoogieIcfgContainer [2024-06-28 03:12:14,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:12:14,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:12:14,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:12:14,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:12:14,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:12:13" (1/4) ... [2024-06-28 03:12:14,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf7ed92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:12:14, skipping insertion in model container [2024-06-28 03:12:14,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:12:13" (2/4) ... [2024-06-28 03:12:14,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf7ed92 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:12:14, skipping insertion in model container [2024-06-28 03:12:14,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:12:14" (3/4) ... [2024-06-28 03:12:14,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf7ed92 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:12:14, skipping insertion in model container [2024-06-28 03:12:14,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:12:14" (4/4) ... [2024-06-28 03:12:14,966 INFO L112 eAbstractionObserver]: Analyzing ICFG mix025_pso.opt_rmo.opt.i [2024-06-28 03:12:14,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:12:14,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:12:14,982 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:12:15,031 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:12:15,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:12:15,103 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 03:12:15,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:12:15,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:12:15,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:12:15,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 03:12:15,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:12:15,123 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;@55a48a02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:12:15,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:12:15,132 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:12:15,132 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:12:15,132 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:12:15,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:15,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:12:15,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:15,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash 362366708, now seen corresponding path program 1 times [2024-06-28 03:12:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:15,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201604605] [2024-06-28 03:12:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:15,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:16,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:16,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201604605] [2024-06-28 03:12:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201604605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:16,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:16,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:12:16,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262888533] [2024-06-28 03:12:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:16,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:12:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:12:16,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:12:16,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 03:12:16,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:16,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:16,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 03:12:16,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:16,676 INFO L124 PetriNetUnfolderBase]: 1152/1852 cut-off events. [2024-06-28 03:12:16,676 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 03:12:16,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 1852 events. 1152/1852 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9237 event pairs, 785 based on Foata normal form. 1/1778 useless extension candidates. Maximal degree in co-relation 3657. Up to 1732 conditions per place. [2024-06-28 03:12:16,698 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 31 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 03:12:16,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 169 flow [2024-06-28 03:12:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:12:16,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:12:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 03:12:16,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-28 03:12:16,713 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 77 transitions. [2024-06-28 03:12:16,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 169 flow [2024-06-28 03:12:16,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:12:16,720 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 03:12:16,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 03:12:16,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 03:12:16,727 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 03:12:16,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:16,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:16,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:16,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:12:16,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:16,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash 342093779, now seen corresponding path program 1 times [2024-06-28 03:12:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:16,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130510136] [2024-06-28 03:12:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:17,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:17,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130510136] [2024-06-28 03:12:17,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130510136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:17,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:17,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:12:17,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388375348] [2024-06-28 03:12:17,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:17,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:12:17,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:12:17,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:12:17,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:12:17,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:17,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:17,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:12:17,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:17,747 INFO L124 PetriNetUnfolderBase]: 1347/2081 cut-off events. [2024-06-28 03:12:17,747 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2024-06-28 03:12:17,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4722 conditions, 2081 events. 1347/2081 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10036 event pairs, 649 based on Foata normal form. 6/2076 useless extension candidates. Maximal degree in co-relation 4710. Up to 1981 conditions per place. [2024-06-28 03:12:17,762 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 40 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-28 03:12:17,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 242 flow [2024-06-28 03:12:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:12:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:12:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-06-28 03:12:17,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-06-28 03:12:17,766 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 98 transitions. [2024-06-28 03:12:17,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 242 flow [2024-06-28 03:12:17,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:12:17,770 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-28 03:12:17,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:12:17,772 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 03:12:17,772 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-28 03:12:17,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:17,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:17,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:17,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:12:17,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:17,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash -640371016, now seen corresponding path program 1 times [2024-06-28 03:12:17,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:17,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720908165] [2024-06-28 03:12:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:17,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:18,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:18,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720908165] [2024-06-28 03:12:18,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720908165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:18,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:18,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:12:18,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321704388] [2024-06-28 03:12:18,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:18,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:12:18,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:18,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:12:18,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:12:19,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:12:19,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:19,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:19,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:12:19,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:19,538 INFO L124 PetriNetUnfolderBase]: 1338/2066 cut-off events. [2024-06-28 03:12:19,538 INFO L125 PetriNetUnfolderBase]: For 1107/1107 co-relation queries the response was YES. [2024-06-28 03:12:19,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5215 conditions, 2066 events. 1338/2066 cut-off events. For 1107/1107 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9949 event pairs, 485 based on Foata normal form. 6/2061 useless extension candidates. Maximal degree in co-relation 5201. Up to 1936 conditions per place. [2024-06-28 03:12:19,553 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 50 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-28 03:12:19,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 348 flow [2024-06-28 03:12:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:12:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:12:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 03:12:19,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556910569105691 [2024-06-28 03:12:19,556 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 6 states and 137 transitions. [2024-06-28 03:12:19,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 348 flow [2024-06-28 03:12:19,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 328 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 03:12:19,559 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 179 flow [2024-06-28 03:12:19,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-28 03:12:19,560 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-28 03:12:19,560 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 179 flow [2024-06-28 03:12:19,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:19,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:19,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:19,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:12:19,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:19,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:19,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1396552970, now seen corresponding path program 1 times [2024-06-28 03:12:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:19,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173618466] [2024-06-28 03:12:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:20,352 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 03:12:20,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:20,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173618466] [2024-06-28 03:12:20,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173618466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:20,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:20,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:12:20,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249982927] [2024-06-28 03:12:20,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:20,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:12:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:12:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:12:20,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:12:20,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 03:12:20,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:20,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:12:20,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:20,842 INFO L124 PetriNetUnfolderBase]: 1126/1832 cut-off events. [2024-06-28 03:12:20,842 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2024-06-28 03:12:20,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5000 conditions, 1832 events. 1126/1832 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9199 event pairs, 487 based on Foata normal form. 2/1803 useless extension candidates. Maximal degree in co-relation 4983. Up to 1683 conditions per place. [2024-06-28 03:12:20,856 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 42 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-28 03:12:20,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 321 flow [2024-06-28 03:12:20,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:12:20,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:12:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-28 03:12:20,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48292682926829267 [2024-06-28 03:12:20,861 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 179 flow. Second operand 5 states and 99 transitions. [2024-06-28 03:12:20,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 321 flow [2024-06-28 03:12:20,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 294 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:12:20,867 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 196 flow [2024-06-28 03:12:20,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 03:12:20,869 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-28 03:12:20,869 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 196 flow [2024-06-28 03:12:20,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 03:12:20,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:20,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:20,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:12:20,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:20,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash -317550184, now seen corresponding path program 1 times [2024-06-28 03:12:20,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:20,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477897083] [2024-06-28 03:12:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:21,732 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 03:12:21,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477897083] [2024-06-28 03:12:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477897083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:21,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:21,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:12:21,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984462627] [2024-06-28 03:12:21,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:21,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:12:21,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:21,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:12:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:12:21,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:21,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:21,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:21,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:21,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:22,248 INFO L124 PetriNetUnfolderBase]: 1335/2073 cut-off events. [2024-06-28 03:12:22,248 INFO L125 PetriNetUnfolderBase]: For 3047/3047 co-relation queries the response was YES. [2024-06-28 03:12:22,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 2073 events. 1335/2073 cut-off events. For 3047/3047 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10000 event pairs, 569 based on Foata normal form. 3/2075 useless extension candidates. Maximal degree in co-relation 6162. Up to 1955 conditions per place. [2024-06-28 03:12:22,266 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 51 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2024-06-28 03:12:22,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 440 flow [2024-06-28 03:12:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:12:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:12:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-28 03:12:22,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-28 03:12:22,269 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 196 flow. Second operand 6 states and 118 transitions. [2024-06-28 03:12:22,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 440 flow [2024-06-28 03:12:22,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 420 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:12:22,279 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 297 flow [2024-06-28 03:12:22,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-06-28 03:12:22,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-28 03:12:22,282 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 297 flow [2024-06-28 03:12:22,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:22,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:22,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:22,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:12:22,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:22,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash -203461313, now seen corresponding path program 1 times [2024-06-28 03:12:22,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:22,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872162689] [2024-06-28 03:12:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:22,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872162689] [2024-06-28 03:12:23,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872162689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:23,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:23,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:12:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472282946] [2024-06-28 03:12:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:23,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:12:23,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:12:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:12:23,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:23,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:23,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:23,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:23,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:23,656 INFO L124 PetriNetUnfolderBase]: 1409/2191 cut-off events. [2024-06-28 03:12:23,657 INFO L125 PetriNetUnfolderBase]: For 5223/5233 co-relation queries the response was YES. [2024-06-28 03:12:23,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7379 conditions, 2191 events. 1409/2191 cut-off events. For 5223/5233 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10578 event pairs, 568 based on Foata normal form. 4/2183 useless extension candidates. Maximal degree in co-relation 7357. Up to 2047 conditions per place. [2024-06-28 03:12:23,671 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 59 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2024-06-28 03:12:23,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 509 flow [2024-06-28 03:12:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:12:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:12:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:12:23,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 03:12:23,673 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 297 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:12:23,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 509 flow [2024-06-28 03:12:23,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 495 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 03:12:23,680 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 341 flow [2024-06-28 03:12:23,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-06-28 03:12:23,684 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-28 03:12:23,684 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 341 flow [2024-06-28 03:12:23,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:23,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:23,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:12:23,685 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:23,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:23,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1254128261, now seen corresponding path program 2 times [2024-06-28 03:12:23,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649533941] [2024-06-28 03:12:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:23,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:24,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649533941] [2024-06-28 03:12:24,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649533941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:24,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:24,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:12:24,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722325362] [2024-06-28 03:12:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:24,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:12:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:12:24,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:12:24,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:24,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:24,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:24,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:24,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:24,992 INFO L124 PetriNetUnfolderBase]: 1415/2207 cut-off events. [2024-06-28 03:12:24,992 INFO L125 PetriNetUnfolderBase]: For 7055/7071 co-relation queries the response was YES. [2024-06-28 03:12:24,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 2207 events. 1415/2207 cut-off events. For 7055/7071 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10724 event pairs, 575 based on Foata normal form. 8/2203 useless extension candidates. Maximal degree in co-relation 7935. Up to 2029 conditions per place. [2024-06-28 03:12:25,018 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 55 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-28 03:12:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 557 flow [2024-06-28 03:12:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:12:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:12:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:12:25,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 03:12:25,021 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 341 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:12:25,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 557 flow [2024-06-28 03:12:25,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 523 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:12:25,028 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 381 flow [2024-06-28 03:12:25,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-06-28 03:12:25,029 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-28 03:12:25,030 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 381 flow [2024-06-28 03:12:25,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:25,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:25,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:25,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:12:25,031 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:25,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1254120325, now seen corresponding path program 1 times [2024-06-28 03:12:25,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:25,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850552147] [2024-06-28 03:12:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:25,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:26,136 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 03:12:26,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:26,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850552147] [2024-06-28 03:12:26,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850552147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:26,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:26,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:26,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655304288] [2024-06-28 03:12:26,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:26,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:26,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:26,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:26,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:26,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:26,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 381 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 03:12:26,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:26,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:26,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:26,712 INFO L124 PetriNetUnfolderBase]: 1365/2148 cut-off events. [2024-06-28 03:12:26,712 INFO L125 PetriNetUnfolderBase]: For 8574/8574 co-relation queries the response was YES. [2024-06-28 03:12:26,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8202 conditions, 2148 events. 1365/2148 cut-off events. For 8574/8574 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10486 event pairs, 533 based on Foata normal form. 3/2150 useless extension candidates. Maximal degree in co-relation 8176. Up to 1986 conditions per place. [2024-06-28 03:12:26,728 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 61 selfloop transitions, 21 changer transitions 0/87 dead transitions. [2024-06-28 03:12:26,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 655 flow [2024-06-28 03:12:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:12:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:12:26,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:12:26,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 03:12:26,730 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 381 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:12:26,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 655 flow [2024-06-28 03:12:26,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 605 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:12:26,738 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 420 flow [2024-06-28 03:12:26,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=420, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-28 03:12:26,740 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-28 03:12:26,741 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 420 flow [2024-06-28 03:12:26,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 03:12:26,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:26,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:26,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:12:26,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:26,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 461921059, now seen corresponding path program 1 times [2024-06-28 03:12:26,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:26,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568469827] [2024-06-28 03:12:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:26,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:27,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:27,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568469827] [2024-06-28 03:12:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568469827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:27,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:27,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:27,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92332861] [2024-06-28 03:12:27,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:27,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:27,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:27,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:27,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:27,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 03:12:27,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:27,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:27,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:28,468 INFO L124 PetriNetUnfolderBase]: 1445/2233 cut-off events. [2024-06-28 03:12:28,468 INFO L125 PetriNetUnfolderBase]: For 11854/11873 co-relation queries the response was YES. [2024-06-28 03:12:28,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9186 conditions, 2233 events. 1445/2233 cut-off events. For 11854/11873 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10717 event pairs, 571 based on Foata normal form. 3/2229 useless extension candidates. Maximal degree in co-relation 9159. Up to 2071 conditions per place. [2024-06-28 03:12:28,483 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 71 selfloop transitions, 14 changer transitions 0/94 dead transitions. [2024-06-28 03:12:28,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 690 flow [2024-06-28 03:12:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:12:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:12:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:12:28,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 03:12:28,485 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 420 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:12:28,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 690 flow [2024-06-28 03:12:28,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 631 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:12:28,495 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 439 flow [2024-06-28 03:12:28,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-28 03:12:28,496 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-28 03:12:28,497 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 439 flow [2024-06-28 03:12:28,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 03:12:28,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:28,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:28,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:12:28,497 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 03:12:28,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2012332651, now seen corresponding path program 1 times [2024-06-28 03:12:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:28,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966840580] [2024-06-28 03:12:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:28,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:29,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:29,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966840580] [2024-06-28 03:12:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966840580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:29,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:29,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:29,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285065898] [2024-06-28 03:12:29,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:29,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:29,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:29,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:29,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:29,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:29,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:29,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:29,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:29,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:30,018 INFO L124 PetriNetUnfolderBase]: 1635/2454 cut-off events. [2024-06-28 03:12:30,018 INFO L125 PetriNetUnfolderBase]: For 15031/15031 co-relation queries the response was YES. [2024-06-28 03:12:30,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10603 conditions, 2454 events. 1635/2454 cut-off events. For 15031/15031 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11455 event pairs, 592 based on Foata normal form. 6/2459 useless extension candidates. Maximal degree in co-relation 10575. Up to 2319 conditions per place. [2024-06-28 03:12:30,036 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 81 selfloop transitions, 22 changer transitions 0/107 dead transitions. [2024-06-28 03:12:30,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 107 transitions, 861 flow [2024-06-28 03:12:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:12:30,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:12:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:12:30,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 03:12:30,038 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 439 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:12:30,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 107 transitions, 861 flow [2024-06-28 03:12:30,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 807 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:12:30,048 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 561 flow [2024-06-28 03:12:30,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=561, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-28 03:12:30,049 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-28 03:12:30,049 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 561 flow [2024-06-28 03:12:30,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:30,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:30,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:30,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:12:30,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:30,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -223032521, now seen corresponding path program 2 times [2024-06-28 03:12:30,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:30,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252729877] [2024-06-28 03:12:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:30,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252729877] [2024-06-28 03:12:30,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252729877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:30,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:30,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:30,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661684475] [2024-06-28 03:12:30,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:30,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:30,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:30,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:30,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:30,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:30,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 561 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:30,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:30,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:30,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:31,541 INFO L124 PetriNetUnfolderBase]: 1719/2583 cut-off events. [2024-06-28 03:12:31,541 INFO L125 PetriNetUnfolderBase]: For 20636/20638 co-relation queries the response was YES. [2024-06-28 03:12:31,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12344 conditions, 2583 events. 1719/2583 cut-off events. For 20636/20638 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12165 event pairs, 591 based on Foata normal form. 8/2590 useless extension candidates. Maximal degree in co-relation 12313. Up to 2285 conditions per place. [2024-06-28 03:12:31,559 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 72 selfloop transitions, 44 changer transitions 0/120 dead transitions. [2024-06-28 03:12:31,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 1104 flow [2024-06-28 03:12:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:12:31,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:12:31,561 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 561 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:12:31,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 1104 flow [2024-06-28 03:12:31,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 1045 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 03:12:31,585 INFO L231 Difference]: Finished difference. Result has 80 places, 94 transitions, 791 flow [2024-06-28 03:12:31,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=791, PETRI_PLACES=80, PETRI_TRANSITIONS=94} [2024-06-28 03:12:31,585 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-28 03:12:31,585 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 94 transitions, 791 flow [2024-06-28 03:12:31,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:31,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:31,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:31,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:12:31,586 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:31,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1204227751, now seen corresponding path program 3 times [2024-06-28 03:12:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:31,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837433244] [2024-06-28 03:12:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:31,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:32,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837433244] [2024-06-28 03:12:32,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837433244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:32,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278029961] [2024-06-28 03:12:32,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:32,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:32,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:32,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 94 transitions, 791 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:32,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:32,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:32,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:32,931 INFO L124 PetriNetUnfolderBase]: 1707/2570 cut-off events. [2024-06-28 03:12:32,932 INFO L125 PetriNetUnfolderBase]: For 24255/24257 co-relation queries the response was YES. [2024-06-28 03:12:32,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13030 conditions, 2570 events. 1707/2570 cut-off events. For 24255/24257 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12091 event pairs, 607 based on Foata normal form. 8/2577 useless extension candidates. Maximal degree in co-relation 12995. Up to 2279 conditions per place. [2024-06-28 03:12:32,955 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 76 selfloop transitions, 38 changer transitions 0/118 dead transitions. [2024-06-28 03:12:32,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 118 transitions, 1149 flow [2024-06-28 03:12:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:12:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:12:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:12:32,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-28 03:12:32,957 INFO L175 Difference]: Start difference. First operand has 80 places, 94 transitions, 791 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:12:32,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 118 transitions, 1149 flow [2024-06-28 03:12:32,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 118 transitions, 1071 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-28 03:12:32,988 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 799 flow [2024-06-28 03:12:32,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=799, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2024-06-28 03:12:32,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2024-06-28 03:12:32,989 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 799 flow [2024-06-28 03:12:32,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:32,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:32,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:32,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:12:32,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:32,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash 639418813, now seen corresponding path program 1 times [2024-06-28 03:12:32,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:32,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695722220] [2024-06-28 03:12:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:32,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695722220] [2024-06-28 03:12:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695722220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:34,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:34,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:34,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377534300] [2024-06-28 03:12:34,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:34,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:34,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:34,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:34,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 799 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:34,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:34,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:34,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:34,773 INFO L124 PetriNetUnfolderBase]: 1503/2363 cut-off events. [2024-06-28 03:12:34,774 INFO L125 PetriNetUnfolderBase]: For 21095/21095 co-relation queries the response was YES. [2024-06-28 03:12:34,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11544 conditions, 2363 events. 1503/2363 cut-off events. For 21095/21095 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11573 event pairs, 506 based on Foata normal form. 6/2368 useless extension candidates. Maximal degree in co-relation 11506. Up to 2157 conditions per place. [2024-06-28 03:12:34,791 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 94 selfloop transitions, 24 changer transitions 0/123 dead transitions. [2024-06-28 03:12:34,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 123 transitions, 1192 flow [2024-06-28 03:12:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:34,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:12:34,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2024-06-28 03:12:34,793 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 799 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:12:34,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 123 transitions, 1192 flow [2024-06-28 03:12:34,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 123 transitions, 1056 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:34,817 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 767 flow [2024-06-28 03:12:34,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=767, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2024-06-28 03:12:34,817 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2024-06-28 03:12:34,818 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 767 flow [2024-06-28 03:12:34,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:34,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:34,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:34,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:12:34,819 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:34,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 368949640, now seen corresponding path program 1 times [2024-06-28 03:12:34,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:34,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124905546] [2024-06-28 03:12:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:35,518 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 03:12:35,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:35,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124905546] [2024-06-28 03:12:35,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124905546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:35,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:35,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:12:35,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699631911] [2024-06-28 03:12:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:35,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:12:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:35,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:12:35,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:12:35,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:35,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 767 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:35,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:35,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:35,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:36,046 INFO L124 PetriNetUnfolderBase]: 1500/2358 cut-off events. [2024-06-28 03:12:36,046 INFO L125 PetriNetUnfolderBase]: For 22704/22704 co-relation queries the response was YES. [2024-06-28 03:12:36,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11529 conditions, 2358 events. 1500/2358 cut-off events. For 22704/22704 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11551 event pairs, 525 based on Foata normal form. 1/2358 useless extension candidates. Maximal degree in co-relation 11493. Up to 2226 conditions per place. [2024-06-28 03:12:36,066 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 92 selfloop transitions, 8 changer transitions 0/105 dead transitions. [2024-06-28 03:12:36,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 990 flow [2024-06-28 03:12:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:12:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:12:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-28 03:12:36,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390243902439025 [2024-06-28 03:12:36,068 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 767 flow. Second operand 5 states and 91 transitions. [2024-06-28 03:12:36,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 990 flow [2024-06-28 03:12:36,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 105 transitions, 904 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:36,094 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 703 flow [2024-06-28 03:12:36,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=703, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2024-06-28 03:12:36,095 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2024-06-28 03:12:36,095 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 703 flow [2024-06-28 03:12:36,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:36,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:36,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:36,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:12:36,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:36,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1434651697, now seen corresponding path program 1 times [2024-06-28 03:12:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:36,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966793395] [2024-06-28 03:12:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:37,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:37,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966793395] [2024-06-28 03:12:37,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966793395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:37,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:37,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:37,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550383836] [2024-06-28 03:12:37,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:37,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:37,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:37,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:37,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:37,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 703 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:37,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:37,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:37,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:37,947 INFO L124 PetriNetUnfolderBase]: 1709/2572 cut-off events. [2024-06-28 03:12:37,948 INFO L125 PetriNetUnfolderBase]: For 29061/29061 co-relation queries the response was YES. [2024-06-28 03:12:37,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12797 conditions, 2572 events. 1709/2572 cut-off events. For 29061/29061 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12068 event pairs, 591 based on Foata normal form. 3/2574 useless extension candidates. Maximal degree in co-relation 12760. Up to 2450 conditions per place. [2024-06-28 03:12:37,965 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 107 selfloop transitions, 28 changer transitions 0/139 dead transitions. [2024-06-28 03:12:37,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 139 transitions, 1268 flow [2024-06-28 03:12:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:12:37,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2024-06-28 03:12:37,967 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 703 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:12:37,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 139 transitions, 1268 flow [2024-06-28 03:12:37,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 1246 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:12:37,996 INFO L231 Difference]: Finished difference. Result has 91 places, 108 transitions, 904 flow [2024-06-28 03:12:37,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=904, PETRI_PLACES=91, PETRI_TRANSITIONS=108} [2024-06-28 03:12:37,996 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2024-06-28 03:12:37,996 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 108 transitions, 904 flow [2024-06-28 03:12:37,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:37,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:37,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:37,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:12:37,997 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:37,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:37,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1438376564, now seen corresponding path program 1 times [2024-06-28 03:12:37,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:37,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737055579] [2024-06-28 03:12:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:37,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:38,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737055579] [2024-06-28 03:12:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737055579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:38,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859043380] [2024-06-28 03:12:38,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:38,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:39,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:39,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 108 transitions, 904 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:39,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:39,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:39,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:39,528 INFO L124 PetriNetUnfolderBase]: 1727/2602 cut-off events. [2024-06-28 03:12:39,529 INFO L125 PetriNetUnfolderBase]: For 34697/34697 co-relation queries the response was YES. [2024-06-28 03:12:39,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13793 conditions, 2602 events. 1727/2602 cut-off events. For 34697/34697 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12328 event pairs, 557 based on Foata normal form. 3/2604 useless extension candidates. Maximal degree in co-relation 13754. Up to 2485 conditions per place. [2024-06-28 03:12:39,547 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 119 selfloop transitions, 26 changer transitions 0/149 dead transitions. [2024-06-28 03:12:39,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 149 transitions, 1440 flow [2024-06-28 03:12:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:12:39,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 03:12:39,549 INFO L175 Difference]: Start difference. First operand has 91 places, 108 transitions, 904 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:12:39,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 149 transitions, 1440 flow [2024-06-28 03:12:39,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 1356 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-28 03:12:39,586 INFO L231 Difference]: Finished difference. Result has 98 places, 121 transitions, 1028 flow [2024-06-28 03:12:39,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1028, PETRI_PLACES=98, PETRI_TRANSITIONS=121} [2024-06-28 03:12:39,587 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-28 03:12:39,587 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 121 transitions, 1028 flow [2024-06-28 03:12:39,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:39,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:39,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:39,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:12:39,588 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:39,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:39,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1323847980, now seen corresponding path program 2 times [2024-06-28 03:12:39,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:39,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162313114] [2024-06-28 03:12:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:40,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:40,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162313114] [2024-06-28 03:12:40,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162313114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:40,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:40,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:40,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029330456] [2024-06-28 03:12:40,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:40,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:40,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:40,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:40,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:40,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 121 transitions, 1028 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:40,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:40,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:40,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:41,155 INFO L124 PetriNetUnfolderBase]: 1745/2634 cut-off events. [2024-06-28 03:12:41,155 INFO L125 PetriNetUnfolderBase]: For 38773/38775 co-relation queries the response was YES. [2024-06-28 03:12:41,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14595 conditions, 2634 events. 1745/2634 cut-off events. For 38773/38775 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12489 event pairs, 543 based on Foata normal form. 5/2638 useless extension candidates. Maximal degree in co-relation 14552. Up to 2428 conditions per place. [2024-06-28 03:12:41,170 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 115 selfloop transitions, 46 changer transitions 0/165 dead transitions. [2024-06-28 03:12:41,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 1642 flow [2024-06-28 03:12:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:12:41,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:12:41,172 INFO L175 Difference]: Start difference. First operand has 98 places, 121 transitions, 1028 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:12:41,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 1642 flow [2024-06-28 03:12:41,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 165 transitions, 1580 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:12:41,215 INFO L231 Difference]: Finished difference. Result has 107 places, 138 transitions, 1289 flow [2024-06-28 03:12:41,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1289, PETRI_PLACES=107, PETRI_TRANSITIONS=138} [2024-06-28 03:12:41,216 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2024-06-28 03:12:41,216 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 138 transitions, 1289 flow [2024-06-28 03:12:41,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:41,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:41,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:41,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:12:41,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:41,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1652862348, now seen corresponding path program 3 times [2024-06-28 03:12:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184857327] [2024-06-28 03:12:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:41,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:42,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:42,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184857327] [2024-06-28 03:12:42,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184857327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:42,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:42,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:42,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017798342] [2024-06-28 03:12:42,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:42,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:42,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:42,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:42,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:42,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:42,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 138 transitions, 1289 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:42,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:42,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:42,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:42,876 INFO L124 PetriNetUnfolderBase]: 1771/2666 cut-off events. [2024-06-28 03:12:42,876 INFO L125 PetriNetUnfolderBase]: For 43644/43646 co-relation queries the response was YES. [2024-06-28 03:12:42,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15738 conditions, 2666 events. 1771/2666 cut-off events. For 43644/43646 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12703 event pairs, 543 based on Foata normal form. 5/2670 useless extension candidates. Maximal degree in co-relation 15690. Up to 2410 conditions per place. [2024-06-28 03:12:42,893 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 110 selfloop transitions, 61 changer transitions 0/175 dead transitions. [2024-06-28 03:12:42,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 175 transitions, 1976 flow [2024-06-28 03:12:42,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:12:42,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:12:42,895 INFO L175 Difference]: Start difference. First operand has 107 places, 138 transitions, 1289 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:12:42,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 175 transitions, 1976 flow [2024-06-28 03:12:42,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 175 transitions, 1906 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:12:42,942 INFO L231 Difference]: Finished difference. Result has 113 places, 146 transitions, 1486 flow [2024-06-28 03:12:42,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1486, PETRI_PLACES=113, PETRI_TRANSITIONS=146} [2024-06-28 03:12:42,943 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2024-06-28 03:12:42,943 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 146 transitions, 1486 flow [2024-06-28 03:12:42,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:42,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:42,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:42,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:12:42,944 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:42,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2108878720, now seen corresponding path program 4 times [2024-06-28 03:12:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:42,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360865340] [2024-06-28 03:12:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360865340] [2024-06-28 03:12:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360865340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:44,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:44,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:44,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660767266] [2024-06-28 03:12:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:44,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:44,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:44,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 146 transitions, 1486 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:44,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:44,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:44,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:44,572 INFO L124 PetriNetUnfolderBase]: 1765/2663 cut-off events. [2024-06-28 03:12:44,572 INFO L125 PetriNetUnfolderBase]: For 47834/47836 co-relation queries the response was YES. [2024-06-28 03:12:44,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16392 conditions, 2663 events. 1765/2663 cut-off events. For 47834/47836 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12699 event pairs, 543 based on Foata normal form. 5/2667 useless extension candidates. Maximal degree in co-relation 16342. Up to 2457 conditions per place. [2024-06-28 03:12:44,590 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 129 selfloop transitions, 41 changer transitions 0/174 dead transitions. [2024-06-28 03:12:44,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 174 transitions, 2015 flow [2024-06-28 03:12:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:12:44,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:12:44,592 INFO L175 Difference]: Start difference. First operand has 113 places, 146 transitions, 1486 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:12:44,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 174 transitions, 2015 flow [2024-06-28 03:12:44,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 174 transitions, 1864 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 03:12:44,664 INFO L231 Difference]: Finished difference. Result has 117 places, 146 transitions, 1426 flow [2024-06-28 03:12:44,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1426, PETRI_PLACES=117, PETRI_TRANSITIONS=146} [2024-06-28 03:12:44,665 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2024-06-28 03:12:44,665 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 146 transitions, 1426 flow [2024-06-28 03:12:44,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:44,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:44,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:44,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:12:44,666 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:44,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:44,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1447461146, now seen corresponding path program 1 times [2024-06-28 03:12:44,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:44,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370089088] [2024-06-28 03:12:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:44,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370089088] [2024-06-28 03:12:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370089088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:45,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347695925] [2024-06-28 03:12:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:45,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:45,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 146 transitions, 1426 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:45,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:45,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:45,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:45,982 INFO L124 PetriNetUnfolderBase]: 1552/2437 cut-off events. [2024-06-28 03:12:45,983 INFO L125 PetriNetUnfolderBase]: For 41571/41571 co-relation queries the response was YES. [2024-06-28 03:12:45,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14732 conditions, 2437 events. 1552/2437 cut-off events. For 41571/41571 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11965 event pairs, 467 based on Foata normal form. 2/2438 useless extension candidates. Maximal degree in co-relation 14680. Up to 2296 conditions per place. [2024-06-28 03:12:46,051 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 143 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2024-06-28 03:12:46,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 159 transitions, 1791 flow [2024-06-28 03:12:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:12:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:12:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:12:46,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:12:46,053 INFO L175 Difference]: Start difference. First operand has 117 places, 146 transitions, 1426 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:12:46,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 159 transitions, 1791 flow [2024-06-28 03:12:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 159 transitions, 1621 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:46,096 INFO L231 Difference]: Finished difference. Result has 114 places, 149 transitions, 1320 flow [2024-06-28 03:12:46,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1320, PETRI_PLACES=114, PETRI_TRANSITIONS=149} [2024-06-28 03:12:46,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-28 03:12:46,097 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 149 transitions, 1320 flow [2024-06-28 03:12:46,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:46,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:46,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:46,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:12:46,098 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 03:12:46,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1234702024, now seen corresponding path program 1 times [2024-06-28 03:12:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:46,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083012709] [2024-06-28 03:12:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:46,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083012709] [2024-06-28 03:12:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083012709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:47,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:47,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:47,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546652862] [2024-06-28 03:12:47,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:47,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:47,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:47,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:47,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:47,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:47,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 149 transitions, 1320 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:47,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:47,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:47,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:47,795 INFO L124 PetriNetUnfolderBase]: 1695/2593 cut-off events. [2024-06-28 03:12:47,795 INFO L125 PetriNetUnfolderBase]: For 53119/53121 co-relation queries the response was YES. [2024-06-28 03:12:47,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16027 conditions, 2593 events. 1695/2593 cut-off events. For 53119/53121 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12585 event pairs, 350 based on Foata normal form. 6/2598 useless extension candidates. Maximal degree in co-relation 15976. Up to 2316 conditions per place. [2024-06-28 03:12:47,811 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 137 selfloop transitions, 16 changer transitions 0/181 dead transitions. [2024-06-28 03:12:47,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 181 transitions, 1755 flow [2024-06-28 03:12:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:12:47,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:12:47,812 INFO L175 Difference]: Start difference. First operand has 114 places, 149 transitions, 1320 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:12:47,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 181 transitions, 1755 flow [2024-06-28 03:12:47,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 181 transitions, 1715 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:12:47,848 INFO L231 Difference]: Finished difference. Result has 118 places, 151 transitions, 1371 flow [2024-06-28 03:12:47,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1371, PETRI_PLACES=118, PETRI_TRANSITIONS=151} [2024-06-28 03:12:47,849 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-06-28 03:12:47,849 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 151 transitions, 1371 flow [2024-06-28 03:12:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:47,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:47,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:12:47,850 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:47,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1231845064, now seen corresponding path program 2 times [2024-06-28 03:12:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84586237] [2024-06-28 03:12:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:48,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:48,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84586237] [2024-06-28 03:12:48,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84586237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:48,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:48,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:48,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718347896] [2024-06-28 03:12:48,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:48,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:48,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:48,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:48,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 151 transitions, 1371 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:48,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:48,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:48,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:49,546 INFO L124 PetriNetUnfolderBase]: 1712/2620 cut-off events. [2024-06-28 03:12:49,546 INFO L125 PetriNetUnfolderBase]: For 58581/58583 co-relation queries the response was YES. [2024-06-28 03:12:49,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16556 conditions, 2620 events. 1712/2620 cut-off events. For 58581/58583 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12784 event pairs, 473 based on Foata normal form. 6/2625 useless extension candidates. Maximal degree in co-relation 16504. Up to 2369 conditions per place. [2024-06-28 03:12:49,565 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 137 selfloop transitions, 17 changer transitions 0/182 dead transitions. [2024-06-28 03:12:49,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 182 transitions, 1810 flow [2024-06-28 03:12:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:12:49,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:12:49,567 INFO L175 Difference]: Start difference. First operand has 118 places, 151 transitions, 1371 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:12:49,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 182 transitions, 1810 flow [2024-06-28 03:12:49,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 182 transitions, 1737 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:49,633 INFO L231 Difference]: Finished difference. Result has 120 places, 153 transitions, 1395 flow [2024-06-28 03:12:49,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1395, PETRI_PLACES=120, PETRI_TRANSITIONS=153} [2024-06-28 03:12:49,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2024-06-28 03:12:49,634 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 153 transitions, 1395 flow [2024-06-28 03:12:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:49,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:49,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:12:49,635 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:49,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1116553894, now seen corresponding path program 3 times [2024-06-28 03:12:49,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:49,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749688624] [2024-06-28 03:12:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:49,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:50,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749688624] [2024-06-28 03:12:50,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749688624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:50,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:50,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:12:50,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497380895] [2024-06-28 03:12:50,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:50,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:12:50,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:12:50,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:12:50,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:50,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 153 transitions, 1395 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:50,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:50,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:50,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:51,322 INFO L124 PetriNetUnfolderBase]: 1729/2645 cut-off events. [2024-06-28 03:12:51,322 INFO L125 PetriNetUnfolderBase]: For 65290/65292 co-relation queries the response was YES. [2024-06-28 03:12:51,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17007 conditions, 2645 events. 1729/2645 cut-off events. For 65290/65292 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12830 event pairs, 469 based on Foata normal form. 6/2650 useless extension candidates. Maximal degree in co-relation 16954. Up to 2402 conditions per place. [2024-06-28 03:12:51,341 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 138 selfloop transitions, 17 changer transitions 0/183 dead transitions. [2024-06-28 03:12:51,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 183 transitions, 1841 flow [2024-06-28 03:12:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:12:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:12:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:12:51,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:12:51,342 INFO L175 Difference]: Start difference. First operand has 120 places, 153 transitions, 1395 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:12:51,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 183 transitions, 1841 flow [2024-06-28 03:12:51,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 183 transitions, 1762 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:51,391 INFO L231 Difference]: Finished difference. Result has 123 places, 157 transitions, 1434 flow [2024-06-28 03:12:51,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1434, PETRI_PLACES=123, PETRI_TRANSITIONS=157} [2024-06-28 03:12:51,392 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 81 predicate places. [2024-06-28 03:12:51,392 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 157 transitions, 1434 flow [2024-06-28 03:12:51,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:51,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:51,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:51,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:12:51,393 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:51,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1524530434, now seen corresponding path program 1 times [2024-06-28 03:12:51,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:51,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178664233] [2024-06-28 03:12:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:51,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:52,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:52,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178664233] [2024-06-28 03:12:52,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178664233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:52,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:52,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:52,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999522445] [2024-06-28 03:12:52,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:52,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:52,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:52,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:52,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 157 transitions, 1434 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:52,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:52,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:52,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:53,295 INFO L124 PetriNetUnfolderBase]: 1825/2745 cut-off events. [2024-06-28 03:12:53,295 INFO L125 PetriNetUnfolderBase]: For 70485/70485 co-relation queries the response was YES. [2024-06-28 03:12:53,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17891 conditions, 2745 events. 1825/2745 cut-off events. For 70485/70485 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13043 event pairs, 476 based on Foata normal form. 3/2747 useless extension candidates. Maximal degree in co-relation 17836. Up to 2613 conditions per place. [2024-06-28 03:12:53,316 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 160 selfloop transitions, 32 changer transitions 0/196 dead transitions. [2024-06-28 03:12:53,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 196 transitions, 2131 flow [2024-06-28 03:12:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:12:53,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:12:53,318 INFO L175 Difference]: Start difference. First operand has 123 places, 157 transitions, 1434 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:12:53,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 196 transitions, 2131 flow [2024-06-28 03:12:53,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 196 transitions, 2048 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 03:12:53,382 INFO L231 Difference]: Finished difference. Result has 127 places, 161 transitions, 1514 flow [2024-06-28 03:12:53,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1514, PETRI_PLACES=127, PETRI_TRANSITIONS=161} [2024-06-28 03:12:53,383 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-28 03:12:53,383 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 161 transitions, 1514 flow [2024-06-28 03:12:53,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:53,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:53,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:53,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:12:53,384 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:53,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1116548934, now seen corresponding path program 2 times [2024-06-28 03:12:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:53,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695971554] [2024-06-28 03:12:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:53,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:54,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:54,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695971554] [2024-06-28 03:12:54,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695971554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:54,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:54,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:54,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591143924] [2024-06-28 03:12:54,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:54,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:54,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:54,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:54,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 161 transitions, 1514 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:54,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:54,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:54,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:55,259 INFO L124 PetriNetUnfolderBase]: 1861/2810 cut-off events. [2024-06-28 03:12:55,259 INFO L125 PetriNetUnfolderBase]: For 76124/76124 co-relation queries the response was YES. [2024-06-28 03:12:55,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18723 conditions, 2810 events. 1861/2810 cut-off events. For 76124/76124 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13436 event pairs, 477 based on Foata normal form. 3/2812 useless extension candidates. Maximal degree in co-relation 18667. Up to 2636 conditions per place. [2024-06-28 03:12:55,279 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 160 selfloop transitions, 37 changer transitions 0/201 dead transitions. [2024-06-28 03:12:55,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 201 transitions, 2253 flow [2024-06-28 03:12:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:12:55,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 03:12:55,280 INFO L175 Difference]: Start difference. First operand has 127 places, 161 transitions, 1514 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:12:55,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 201 transitions, 2253 flow [2024-06-28 03:12:55,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 201 transitions, 2120 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:12:55,342 INFO L231 Difference]: Finished difference. Result has 130 places, 169 transitions, 1598 flow [2024-06-28 03:12:55,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=130, PETRI_TRANSITIONS=169} [2024-06-28 03:12:55,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-28 03:12:55,343 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 169 transitions, 1598 flow [2024-06-28 03:12:55,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:55,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:55,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:55,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:12:55,343 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:55,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1640001094, now seen corresponding path program 3 times [2024-06-28 03:12:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:55,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726408315] [2024-06-28 03:12:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:55,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:56,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:56,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726408315] [2024-06-28 03:12:56,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726408315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:56,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:56,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325757780] [2024-06-28 03:12:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:56,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:56,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:56,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:56,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 169 transitions, 1598 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:56,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:56,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:56,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:57,159 INFO L124 PetriNetUnfolderBase]: 1903/2873 cut-off events. [2024-06-28 03:12:57,159 INFO L125 PetriNetUnfolderBase]: For 85133/85133 co-relation queries the response was YES. [2024-06-28 03:12:57,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19839 conditions, 2873 events. 1903/2873 cut-off events. For 85133/85133 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13797 event pairs, 477 based on Foata normal form. 3/2875 useless extension candidates. Maximal degree in co-relation 19781. Up to 2654 conditions per place. [2024-06-28 03:12:57,181 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 159 selfloop transitions, 51 changer transitions 0/214 dead transitions. [2024-06-28 03:12:57,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 214 transitions, 2505 flow [2024-06-28 03:12:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:12:57,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 03:12:57,183 INFO L175 Difference]: Start difference. First operand has 130 places, 169 transitions, 1598 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:12:57,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 214 transitions, 2505 flow [2024-06-28 03:12:57,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 214 transitions, 2352 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:57,258 INFO L231 Difference]: Finished difference. Result has 134 places, 177 transitions, 1760 flow [2024-06-28 03:12:57,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1760, PETRI_PLACES=134, PETRI_TRANSITIONS=177} [2024-06-28 03:12:57,259 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2024-06-28 03:12:57,259 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 177 transitions, 1760 flow [2024-06-28 03:12:57,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:57,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:57,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:57,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:12:57,260 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:57,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:57,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1640001342, now seen corresponding path program 1 times [2024-06-28 03:12:57,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:57,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056143136] [2024-06-28 03:12:57,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:57,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:58,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:58,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056143136] [2024-06-28 03:12:58,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056143136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:58,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:58,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:58,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593484693] [2024-06-28 03:12:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:58,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:58,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:58,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:58,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 177 transitions, 1760 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:58,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:58,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:58,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:58,929 INFO L124 PetriNetUnfolderBase]: 2049/3113 cut-off events. [2024-06-28 03:12:58,929 INFO L125 PetriNetUnfolderBase]: For 109288/109288 co-relation queries the response was YES. [2024-06-28 03:12:58,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21938 conditions, 3113 events. 2049/3113 cut-off events. For 109288/109288 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15419 event pairs, 492 based on Foata normal form. 39/3151 useless extension candidates. Maximal degree in co-relation 21880. Up to 2682 conditions per place. [2024-06-28 03:12:58,952 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 163 selfloop transitions, 49 changer transitions 0/216 dead transitions. [2024-06-28 03:12:58,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 216 transitions, 2493 flow [2024-06-28 03:12:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:12:58,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47696476964769646 [2024-06-28 03:12:58,954 INFO L175 Difference]: Start difference. First operand has 134 places, 177 transitions, 1760 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:12:58,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 216 transitions, 2493 flow [2024-06-28 03:12:59,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 216 transitions, 2255 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-28 03:12:59,060 INFO L231 Difference]: Finished difference. Result has 136 places, 180 transitions, 1735 flow [2024-06-28 03:12:59,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1735, PETRI_PLACES=136, PETRI_TRANSITIONS=180} [2024-06-28 03:12:59,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-28 03:12:59,061 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 180 transitions, 1735 flow [2024-06-28 03:12:59,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:59,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:59,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:59,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:12:59,062 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:59,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1933638961, now seen corresponding path program 1 times [2024-06-28 03:12:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789486159] [2024-06-28 03:12:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:59,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:59,725 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 03:12:59,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:59,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789486159] [2024-06-28 03:12:59,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789486159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:59,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:59,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:12:59,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143690469] [2024-06-28 03:12:59,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:59,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:12:59,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:59,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:12:59,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:12:59,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:12:59,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 180 transitions, 1735 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:59,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:59,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:12:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:00,410 INFO L124 PetriNetUnfolderBase]: 2059/3129 cut-off events. [2024-06-28 03:13:00,410 INFO L125 PetriNetUnfolderBase]: For 108843/108843 co-relation queries the response was YES. [2024-06-28 03:13:00,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22677 conditions, 3129 events. 2059/3129 cut-off events. For 108843/108843 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15530 event pairs, 500 based on Foata normal form. 2/3130 useless extension candidates. Maximal degree in co-relation 22618. Up to 3021 conditions per place. [2024-06-28 03:13:00,431 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 176 selfloop transitions, 22 changer transitions 0/202 dead transitions. [2024-06-28 03:13:00,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 202 transitions, 2313 flow [2024-06-28 03:13:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:13:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:13:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 03:13:00,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 03:13:00,433 INFO L175 Difference]: Start difference. First operand has 136 places, 180 transitions, 1735 flow. Second operand 6 states and 111 transitions. [2024-06-28 03:13:00,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 202 transitions, 2313 flow [2024-06-28 03:13:00,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 202 transitions, 2195 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:00,525 INFO L231 Difference]: Finished difference. Result has 135 places, 185 transitions, 1739 flow [2024-06-28 03:13:00,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1739, PETRI_PLACES=135, PETRI_TRANSITIONS=185} [2024-06-28 03:13:00,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-28 03:13:00,526 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 185 transitions, 1739 flow [2024-06-28 03:13:00,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:00,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:00,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:00,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:13:00,526 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 03:13:00,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:00,527 INFO L85 PathProgramCache]: Analyzing trace with hash 186051486, now seen corresponding path program 4 times [2024-06-28 03:13:00,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:00,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856606162] [2024-06-28 03:13:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:01,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856606162] [2024-06-28 03:13:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856606162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:01,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:01,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:13:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436691261] [2024-06-28 03:13:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:13:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:01,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:13:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:13:01,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:01,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 185 transitions, 1739 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:01,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:01,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:01,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:02,114 INFO L124 PetriNetUnfolderBase]: 1955/3020 cut-off events. [2024-06-28 03:13:02,114 INFO L125 PetriNetUnfolderBase]: For 108000/108004 co-relation queries the response was YES. [2024-06-28 03:13:02,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21479 conditions, 3020 events. 1955/3020 cut-off events. For 108000/108004 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15361 event pairs, 462 based on Foata normal form. 8/3027 useless extension candidates. Maximal degree in co-relation 21419. Up to 2700 conditions per place. [2024-06-28 03:13:02,135 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 152 selfloop transitions, 24 changer transitions 0/212 dead transitions. [2024-06-28 03:13:02,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 212 transitions, 2227 flow [2024-06-28 03:13:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:13:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:13:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:13:02,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:13:02,138 INFO L175 Difference]: Start difference. First operand has 135 places, 185 transitions, 1739 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:13:02,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 212 transitions, 2227 flow [2024-06-28 03:13:02,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 212 transitions, 2176 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:13:02,217 INFO L231 Difference]: Finished difference. Result has 141 places, 189 transitions, 1831 flow [2024-06-28 03:13:02,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1831, PETRI_PLACES=141, PETRI_TRANSITIONS=189} [2024-06-28 03:13:02,218 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-28 03:13:02,218 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 189 transitions, 1831 flow [2024-06-28 03:13:02,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:02,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:02,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:02,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:13:02,219 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 03:13:02,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:02,219 INFO L85 PathProgramCache]: Analyzing trace with hash 414130576, now seen corresponding path program 4 times [2024-06-28 03:13:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:02,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220178282] [2024-06-28 03:13:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:03,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220178282] [2024-06-28 03:13:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220178282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:03,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:03,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:03,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867273842] [2024-06-28 03:13:03,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:03,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:03,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:03,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:03,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 189 transitions, 1831 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:03,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:03,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:03,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:04,324 INFO L124 PetriNetUnfolderBase]: 2069/3149 cut-off events. [2024-06-28 03:13:04,324 INFO L125 PetriNetUnfolderBase]: For 117900/117902 co-relation queries the response was YES. [2024-06-28 03:13:04,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22860 conditions, 3149 events. 2069/3149 cut-off events. For 117900/117902 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15648 event pairs, 479 based on Foata normal form. 5/3153 useless extension candidates. Maximal degree in co-relation 22798. Up to 2819 conditions per place. [2024-06-28 03:13:04,348 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 146 selfloop transitions, 71 changer transitions 0/221 dead transitions. [2024-06-28 03:13:04,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 221 transitions, 2567 flow [2024-06-28 03:13:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:13:04,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 03:13:04,349 INFO L175 Difference]: Start difference. First operand has 141 places, 189 transitions, 1831 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:13:04,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 221 transitions, 2567 flow [2024-06-28 03:13:04,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 221 transitions, 2458 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:13:04,447 INFO L231 Difference]: Finished difference. Result has 145 places, 193 transitions, 1993 flow [2024-06-28 03:13:04,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1993, PETRI_PLACES=145, PETRI_TRANSITIONS=193} [2024-06-28 03:13:04,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-28 03:13:04,448 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 193 transitions, 1993 flow [2024-06-28 03:13:04,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:04,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:04,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:04,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:13:04,448 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 03:13:04,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash 414137086, now seen corresponding path program 5 times [2024-06-28 03:13:04,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:04,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757162415] [2024-06-28 03:13:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:04,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:05,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:05,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757162415] [2024-06-28 03:13:05,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757162415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:05,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:05,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:05,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198600478] [2024-06-28 03:13:05,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:05,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:05,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:05,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:05,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:05,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 193 transitions, 1993 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:05,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:05,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:05,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:06,479 INFO L124 PetriNetUnfolderBase]: 2087/3175 cut-off events. [2024-06-28 03:13:06,479 INFO L125 PetriNetUnfolderBase]: For 126010/126010 co-relation queries the response was YES. [2024-06-28 03:13:06,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23791 conditions, 3175 events. 2087/3175 cut-off events. For 126010/126010 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15818 event pairs, 481 based on Foata normal form. 3/3177 useless extension candidates. Maximal degree in co-relation 23728. Up to 2759 conditions per place. [2024-06-28 03:13:06,506 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 129 selfloop transitions, 93 changer transitions 0/226 dead transitions. [2024-06-28 03:13:06,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 226 transitions, 2755 flow [2024-06-28 03:13:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:13:06,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 03:13:06,507 INFO L175 Difference]: Start difference. First operand has 145 places, 193 transitions, 1993 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:13:06,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 226 transitions, 2755 flow [2024-06-28 03:13:06,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 226 transitions, 2500 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 03:13:06,630 INFO L231 Difference]: Finished difference. Result has 146 places, 197 transitions, 2061 flow [2024-06-28 03:13:06,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2061, PETRI_PLACES=146, PETRI_TRANSITIONS=197} [2024-06-28 03:13:06,630 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-06-28 03:13:06,631 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 197 transitions, 2061 flow [2024-06-28 03:13:06,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:06,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:06,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:06,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:13:06,631 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:06,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:06,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1916820610, now seen corresponding path program 6 times [2024-06-28 03:13:06,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:06,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242823150] [2024-06-28 03:13:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:06,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:07,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242823150] [2024-06-28 03:13:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242823150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:07,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:07,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:07,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121730286] [2024-06-28 03:13:07,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:07,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:08,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:08,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 197 transitions, 2061 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:08,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:08,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:08,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:08,845 INFO L124 PetriNetUnfolderBase]: 2123/3243 cut-off events. [2024-06-28 03:13:08,845 INFO L125 PetriNetUnfolderBase]: For 135106/135108 co-relation queries the response was YES. [2024-06-28 03:13:08,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24701 conditions, 3243 events. 2123/3243 cut-off events. For 135106/135108 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16313 event pairs, 487 based on Foata normal form. 5/3247 useless extension candidates. Maximal degree in co-relation 24638. Up to 2890 conditions per place. [2024-06-28 03:13:08,868 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 167 selfloop transitions, 64 changer transitions 0/235 dead transitions. [2024-06-28 03:13:08,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 235 transitions, 3017 flow [2024-06-28 03:13:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:13:08,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:13:08,869 INFO L175 Difference]: Start difference. First operand has 146 places, 197 transitions, 2061 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:13:08,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 235 transitions, 3017 flow [2024-06-28 03:13:08,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 235 transitions, 2716 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:08,986 INFO L231 Difference]: Finished difference. Result has 149 places, 205 transitions, 2077 flow [2024-06-28 03:13:08,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2077, PETRI_PLACES=149, PETRI_TRANSITIONS=205} [2024-06-28 03:13:08,986 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 107 predicate places. [2024-06-28 03:13:08,986 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 205 transitions, 2077 flow [2024-06-28 03:13:08,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:08,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:08,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:08,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:13:08,987 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:08,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1916640872, now seen corresponding path program 2 times [2024-06-28 03:13:08,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:08,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268363213] [2024-06-28 03:13:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:10,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268363213] [2024-06-28 03:13:10,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268363213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:10,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:10,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:10,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869352784] [2024-06-28 03:13:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:10,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:10,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:10,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:10,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:10,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 205 transitions, 2077 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:10,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:10,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:10,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:10,800 INFO L124 PetriNetUnfolderBase]: 2293/3517 cut-off events. [2024-06-28 03:13:10,801 INFO L125 PetriNetUnfolderBase]: For 171715/171717 co-relation queries the response was YES. [2024-06-28 03:13:10,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27464 conditions, 3517 events. 2293/3517 cut-off events. For 171715/171717 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 18144 event pairs, 503 based on Foata normal form. 41/3557 useless extension candidates. Maximal degree in co-relation 27399. Up to 2910 conditions per place. [2024-06-28 03:13:10,831 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 167 selfloop transitions, 75 changer transitions 0/246 dead transitions. [2024-06-28 03:13:10,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 246 transitions, 3123 flow [2024-06-28 03:13:10,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:13:10,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-28 03:13:10,834 INFO L175 Difference]: Start difference. First operand has 149 places, 205 transitions, 2077 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:13:10,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 246 transitions, 3123 flow [2024-06-28 03:13:10,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 246 transitions, 2866 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 03:13:10,981 INFO L231 Difference]: Finished difference. Result has 153 places, 212 transitions, 2245 flow [2024-06-28 03:13:10,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2245, PETRI_PLACES=153, PETRI_TRANSITIONS=212} [2024-06-28 03:13:10,982 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-28 03:13:10,982 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 212 transitions, 2245 flow [2024-06-28 03:13:10,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:10,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:10,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:10,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:13:10,982 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:10,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash 422708214, now seen corresponding path program 3 times [2024-06-28 03:13:10,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:10,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564913251] [2024-06-28 03:13:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:11,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:11,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564913251] [2024-06-28 03:13:11,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564913251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:11,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:11,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:11,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989853730] [2024-06-28 03:13:11,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:11,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:12,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:12,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 212 transitions, 2245 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:12,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:12,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:12,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:12,819 INFO L124 PetriNetUnfolderBase]: 2504/3850 cut-off events. [2024-06-28 03:13:12,819 INFO L125 PetriNetUnfolderBase]: For 208045/208047 co-relation queries the response was YES. [2024-06-28 03:13:12,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32358 conditions, 3850 events. 2504/3850 cut-off events. For 208045/208047 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20331 event pairs, 493 based on Foata normal form. 8/3857 useless extension candidates. Maximal degree in co-relation 32292. Up to 2588 conditions per place. [2024-06-28 03:13:12,853 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 127 selfloop transitions, 123 changer transitions 0/254 dead transitions. [2024-06-28 03:13:12,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 254 transitions, 3363 flow [2024-06-28 03:13:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:13:12,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-28 03:13:12,854 INFO L175 Difference]: Start difference. First operand has 153 places, 212 transitions, 2245 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:13:12,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 254 transitions, 3363 flow [2024-06-28 03:13:13,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 254 transitions, 3124 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-28 03:13:13,083 INFO L231 Difference]: Finished difference. Result has 156 places, 218 transitions, 2478 flow [2024-06-28 03:13:13,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2478, PETRI_PLACES=156, PETRI_TRANSITIONS=218} [2024-06-28 03:13:13,083 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-28 03:13:13,083 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 218 transitions, 2478 flow [2024-06-28 03:13:13,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:13,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:13,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:13,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:13:13,084 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 03:13:13,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:13,084 INFO L85 PathProgramCache]: Analyzing trace with hash 414137334, now seen corresponding path program 4 times [2024-06-28 03:13:13,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:13,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577929440] [2024-06-28 03:13:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:13,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:13,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:13,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577929440] [2024-06-28 03:13:13,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577929440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:13,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:13,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33261569] [2024-06-28 03:13:13,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:13,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:13,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:14,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:14,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 218 transitions, 2478 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:14,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:14,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:14,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:14,803 INFO L124 PetriNetUnfolderBase]: 2486/3828 cut-off events. [2024-06-28 03:13:14,804 INFO L125 PetriNetUnfolderBase]: For 205581/205583 co-relation queries the response was YES. [2024-06-28 03:13:14,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31507 conditions, 3828 events. 2486/3828 cut-off events. For 205581/205583 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20236 event pairs, 525 based on Foata normal form. 38/3865 useless extension candidates. Maximal degree in co-relation 31440. Up to 3258 conditions per place. [2024-06-28 03:13:14,837 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 169 selfloop transitions, 81 changer transitions 0/254 dead transitions. [2024-06-28 03:13:14,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 254 transitions, 3360 flow [2024-06-28 03:13:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:13:14,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-28 03:13:14,839 INFO L175 Difference]: Start difference. First operand has 156 places, 218 transitions, 2478 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:13:14,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 254 transitions, 3360 flow [2024-06-28 03:13:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 254 transitions, 3114 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 03:13:15,102 INFO L231 Difference]: Finished difference. Result has 160 places, 221 transitions, 2519 flow [2024-06-28 03:13:15,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2519, PETRI_PLACES=160, PETRI_TRANSITIONS=221} [2024-06-28 03:13:15,103 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 03:13:15,103 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 221 transitions, 2519 flow [2024-06-28 03:13:15,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:15,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:15,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:15,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:13:15,104 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:15,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 186235936, now seen corresponding path program 7 times [2024-06-28 03:13:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:15,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301966791] [2024-06-28 03:13:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:16,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:16,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301966791] [2024-06-28 03:13:16,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301966791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:16,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:16,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865177679] [2024-06-28 03:13:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:16,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:16,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:16,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:16,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 221 transitions, 2519 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:16,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:16,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:16,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:16,916 INFO L124 PetriNetUnfolderBase]: 2504/3859 cut-off events. [2024-06-28 03:13:16,917 INFO L125 PetriNetUnfolderBase]: For 195024/195024 co-relation queries the response was YES. [2024-06-28 03:13:16,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32058 conditions, 3859 events. 2504/3859 cut-off events. For 195024/195024 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20528 event pairs, 529 based on Foata normal form. 3/3861 useless extension candidates. Maximal degree in co-relation 31989. Up to 3402 conditions per place. [2024-06-28 03:13:16,950 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 163 selfloop transitions, 88 changer transitions 0/255 dead transitions. [2024-06-28 03:13:16,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 255 transitions, 3457 flow [2024-06-28 03:13:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:13:16,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-28 03:13:16,952 INFO L175 Difference]: Start difference. First operand has 160 places, 221 transitions, 2519 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:13:16,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 255 transitions, 3457 flow [2024-06-28 03:13:17,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 255 transitions, 3266 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:17,174 INFO L231 Difference]: Finished difference. Result has 162 places, 225 transitions, 2665 flow [2024-06-28 03:13:17,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2665, PETRI_PLACES=162, PETRI_TRANSITIONS=225} [2024-06-28 03:13:17,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-06-28 03:13:17,175 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 225 transitions, 2665 flow [2024-06-28 03:13:17,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:17,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:17,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:17,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:13:17,176 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:17,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash 422411544, now seen corresponding path program 5 times [2024-06-28 03:13:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310751145] [2024-06-28 03:13:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:18,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:18,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310751145] [2024-06-28 03:13:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310751145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:18,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:18,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670359412] [2024-06-28 03:13:18,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:18,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:18,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:18,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:18,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 225 transitions, 2665 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:18,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:18,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:18,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:19,129 INFO L124 PetriNetUnfolderBase]: 2494/3848 cut-off events. [2024-06-28 03:13:19,129 INFO L125 PetriNetUnfolderBase]: For 196080/196082 co-relation queries the response was YES. [2024-06-28 03:13:19,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31967 conditions, 3848 events. 2494/3848 cut-off events. For 196080/196082 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20459 event pairs, 525 based on Foata normal form. 8/3855 useless extension candidates. Maximal degree in co-relation 31897. Up to 3140 conditions per place. [2024-06-28 03:13:19,162 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 142 selfloop transitions, 116 changer transitions 0/262 dead transitions. [2024-06-28 03:13:19,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 262 transitions, 3477 flow [2024-06-28 03:13:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:13:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:13:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:13:19,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47317073170731705 [2024-06-28 03:13:19,163 INFO L175 Difference]: Start difference. First operand has 162 places, 225 transitions, 2665 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:13:19,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 262 transitions, 3477 flow [2024-06-28 03:13:19,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 262 transitions, 3150 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:19,419 INFO L231 Difference]: Finished difference. Result has 165 places, 225 transitions, 2585 flow [2024-06-28 03:13:19,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2585, PETRI_PLACES=165, PETRI_TRANSITIONS=225} [2024-06-28 03:13:19,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-28 03:13:19,420 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 225 transitions, 2585 flow [2024-06-28 03:13:19,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:19,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:19,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:19,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:13:19,421 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:19,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash 300875334, now seen corresponding path program 8 times [2024-06-28 03:13:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:19,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900660851] [2024-06-28 03:13:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:19,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:20,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:20,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900660851] [2024-06-28 03:13:20,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900660851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:20,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:20,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:20,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402053951] [2024-06-28 03:13:20,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:20,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:20,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:20,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:20,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:20,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 225 transitions, 2585 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:20,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:20,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:20,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:21,374 INFO L124 PetriNetUnfolderBase]: 2496/3851 cut-off events. [2024-06-28 03:13:21,375 INFO L125 PetriNetUnfolderBase]: For 198224/198224 co-relation queries the response was YES. [2024-06-28 03:13:21,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32126 conditions, 3851 events. 2496/3851 cut-off events. For 198224/198224 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20564 event pairs, 524 based on Foata normal form. 3/3853 useless extension candidates. Maximal degree in co-relation 32055. Up to 3248 conditions per place. [2024-06-28 03:13:21,404 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 113 selfloop transitions, 141 changer transitions 0/258 dead transitions. [2024-06-28 03:13:21,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 258 transitions, 3471 flow [2024-06-28 03:13:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:13:21,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 03:13:21,405 INFO L175 Difference]: Start difference. First operand has 165 places, 225 transitions, 2585 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:13:21,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 258 transitions, 3471 flow [2024-06-28 03:13:21,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 3142 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:13:21,613 INFO L231 Difference]: Finished difference. Result has 164 places, 229 transitions, 2711 flow [2024-06-28 03:13:21,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2711, PETRI_PLACES=164, PETRI_TRANSITIONS=229} [2024-06-28 03:13:21,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-28 03:13:21,613 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 229 transitions, 2711 flow [2024-06-28 03:13:21,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:21,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:21,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:21,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:13:21,614 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:21,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1921634521, now seen corresponding path program 2 times [2024-06-28 03:13:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:21,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102229939] [2024-06-28 03:13:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:21,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:22,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:22,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102229939] [2024-06-28 03:13:22,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102229939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:22,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:22,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:13:22,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677055517] [2024-06-28 03:13:22,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:22,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:13:22,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:22,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:13:22,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:13:22,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:22,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 229 transitions, 2711 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:22,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:22,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:22,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:23,078 INFO L124 PetriNetUnfolderBase]: 2490/3843 cut-off events. [2024-06-28 03:13:23,078 INFO L125 PetriNetUnfolderBase]: For 198429/198429 co-relation queries the response was YES. [2024-06-28 03:13:23,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31986 conditions, 3843 events. 2490/3843 cut-off events. For 198429/198429 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20488 event pairs, 543 based on Foata normal form. 2/3844 useless extension candidates. Maximal degree in co-relation 31915. Up to 3708 conditions per place. [2024-06-28 03:13:23,115 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 213 selfloop transitions, 22 changer transitions 0/239 dead transitions. [2024-06-28 03:13:23,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 239 transitions, 3218 flow [2024-06-28 03:13:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:13:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:13:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:13:23,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:13:23,116 INFO L175 Difference]: Start difference. First operand has 164 places, 229 transitions, 2711 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:13:23,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 239 transitions, 3218 flow [2024-06-28 03:13:23,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 239 transitions, 2777 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:23,336 INFO L231 Difference]: Finished difference. Result has 163 places, 229 transitions, 2322 flow [2024-06-28 03:13:23,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2322, PETRI_PLACES=163, PETRI_TRANSITIONS=229} [2024-06-28 03:13:23,337 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 03:13:23,337 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 229 transitions, 2322 flow [2024-06-28 03:13:23,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:23,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:23,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:23,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:13:23,338 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:23,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:23,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1851942597, now seen corresponding path program 1 times [2024-06-28 03:13:23,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:23,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159956796] [2024-06-28 03:13:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:23,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:23,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:23,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159956796] [2024-06-28 03:13:23,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159956796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:23,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:23,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:13:23,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734387909] [2024-06-28 03:13:23,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:23,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:13:23,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:13:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:13:23,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:23,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 229 transitions, 2322 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:23,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:23,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:23,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:24,513 INFO L124 PetriNetUnfolderBase]: 2288/3636 cut-off events. [2024-06-28 03:13:24,514 INFO L125 PetriNetUnfolderBase]: For 172167/172167 co-relation queries the response was YES. [2024-06-28 03:13:24,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28678 conditions, 3636 events. 2288/3636 cut-off events. For 172167/172167 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 19950 event pairs, 452 based on Foata normal form. 2/3637 useless extension candidates. Maximal degree in co-relation 28606. Up to 3428 conditions per place. [2024-06-28 03:13:24,543 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 221 selfloop transitions, 19 changer transitions 0/245 dead transitions. [2024-06-28 03:13:24,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 245 transitions, 2946 flow [2024-06-28 03:13:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:13:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:13:24,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 03:13:24,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45934959349593496 [2024-06-28 03:13:24,544 INFO L175 Difference]: Start difference. First operand has 163 places, 229 transitions, 2322 flow. Second operand 6 states and 113 transitions. [2024-06-28 03:13:24,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 245 transitions, 2946 flow [2024-06-28 03:13:24,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 245 transitions, 2890 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:13:24,703 INFO L231 Difference]: Finished difference. Result has 164 places, 232 transitions, 2345 flow [2024-06-28 03:13:24,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2345, PETRI_PLACES=164, PETRI_TRANSITIONS=232} [2024-06-28 03:13:24,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-28 03:13:24,704 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 232 transitions, 2345 flow [2024-06-28 03:13:24,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:24,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:24,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:24,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:13:24,704 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:24,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1921628569, now seen corresponding path program 2 times [2024-06-28 03:13:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712696492] [2024-06-28 03:13:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712696492] [2024-06-28 03:13:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712696492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:13:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279169761] [2024-06-28 03:13:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:25,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:13:25,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:13:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:13:25,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:25,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 232 transitions, 2345 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:25,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:25,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:25,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:25,838 INFO L124 PetriNetUnfolderBase]: 2242/3559 cut-off events. [2024-06-28 03:13:25,838 INFO L125 PetriNetUnfolderBase]: For 174505/174505 co-relation queries the response was YES. [2024-06-28 03:13:25,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28242 conditions, 3559 events. 2242/3559 cut-off events. For 174505/174505 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19393 event pairs, 448 based on Foata normal form. 1/3559 useless extension candidates. Maximal degree in co-relation 28169. Up to 3385 conditions per place. [2024-06-28 03:13:25,865 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 225 selfloop transitions, 11 changer transitions 0/241 dead transitions. [2024-06-28 03:13:25,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 241 transitions, 2842 flow [2024-06-28 03:13:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:13:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:13:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:13:25,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:13:25,866 INFO L175 Difference]: Start difference. First operand has 164 places, 232 transitions, 2345 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:13:25,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 241 transitions, 2842 flow [2024-06-28 03:13:26,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 241 transitions, 2813 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:13:26,035 INFO L231 Difference]: Finished difference. Result has 167 places, 232 transitions, 2344 flow [2024-06-28 03:13:26,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2344, PETRI_PLACES=167, PETRI_TRANSITIONS=232} [2024-06-28 03:13:26,036 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-06-28 03:13:26,036 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 232 transitions, 2344 flow [2024-06-28 03:13:26,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:26,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:26,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:26,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:13:26,037 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 03:13:26,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1220019200, now seen corresponding path program 1 times [2024-06-28 03:13:26,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:26,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705059698] [2024-06-28 03:13:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:26,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:26,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:26,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705059698] [2024-06-28 03:13:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705059698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:26,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838563891] [2024-06-28 03:13:26,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:26,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:26,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:26,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:26,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:26,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 232 transitions, 2344 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:26,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:26,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:26,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:27,760 INFO L124 PetriNetUnfolderBase]: 2500/3851 cut-off events. [2024-06-28 03:13:27,760 INFO L125 PetriNetUnfolderBase]: For 218914/218914 co-relation queries the response was YES. [2024-06-28 03:13:27,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31898 conditions, 3851 events. 2500/3851 cut-off events. For 218914/218914 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 20314 event pairs, 347 based on Foata normal form. 6/3856 useless extension candidates. Maximal degree in co-relation 31824. Up to 3589 conditions per place. [2024-06-28 03:13:27,792 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 240 selfloop transitions, 33 changer transitions 0/277 dead transitions. [2024-06-28 03:13:27,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 277 transitions, 3381 flow [2024-06-28 03:13:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:13:27,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 03:13:27,793 INFO L175 Difference]: Start difference. First operand has 167 places, 232 transitions, 2344 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:13:27,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 277 transitions, 3381 flow [2024-06-28 03:13:27,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 277 transitions, 3334 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:13:27,938 INFO L231 Difference]: Finished difference. Result has 172 places, 240 transitions, 2625 flow [2024-06-28 03:13:27,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2625, PETRI_PLACES=172, PETRI_TRANSITIONS=240} [2024-06-28 03:13:27,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2024-06-28 03:13:27,938 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 240 transitions, 2625 flow [2024-06-28 03:13:27,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:27,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:27,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:27,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:13:27,940 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 03:13:27,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1216209920, now seen corresponding path program 2 times [2024-06-28 03:13:27,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:27,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357557165] [2024-06-28 03:13:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:27,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:28,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:28,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357557165] [2024-06-28 03:13:28,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357557165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:28,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:28,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:28,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321292828] [2024-06-28 03:13:28,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:28,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:28,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:29,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:29,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 240 transitions, 2625 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:29,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:29,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:29,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:29,974 INFO L124 PetriNetUnfolderBase]: 2528/3895 cut-off events. [2024-06-28 03:13:29,974 INFO L125 PetriNetUnfolderBase]: For 233922/233922 co-relation queries the response was YES. [2024-06-28 03:13:29,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33056 conditions, 3895 events. 2528/3895 cut-off events. For 233922/233922 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20757 event pairs, 491 based on Foata normal form. 6/3900 useless extension candidates. Maximal degree in co-relation 32979. Up to 3703 conditions per place. [2024-06-28 03:13:30,009 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 237 selfloop transitions, 36 changer transitions 0/277 dead transitions. [2024-06-28 03:13:30,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 277 transitions, 3460 flow [2024-06-28 03:13:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:13:30,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 03:13:30,011 INFO L175 Difference]: Start difference. First operand has 172 places, 240 transitions, 2625 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:13:30,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 277 transitions, 3460 flow [2024-06-28 03:13:30,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 277 transitions, 3289 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-28 03:13:30,238 INFO L231 Difference]: Finished difference. Result has 177 places, 243 transitions, 2654 flow [2024-06-28 03:13:30,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2654, PETRI_PLACES=177, PETRI_TRANSITIONS=243} [2024-06-28 03:13:30,239 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-06-28 03:13:30,239 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 243 transitions, 2654 flow [2024-06-28 03:13:30,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:30,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:30,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:30,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:13:30,240 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 03:13:30,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 15650194, now seen corresponding path program 3 times [2024-06-28 03:13:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750376213] [2024-06-28 03:13:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:31,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750376213] [2024-06-28 03:13:31,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750376213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:31,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:31,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:31,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684379705] [2024-06-28 03:13:31,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:31,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:31,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:31,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:31,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:31,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:31,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 243 transitions, 2654 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:31,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:31,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:31,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:32,027 INFO L124 PetriNetUnfolderBase]: 2582/3977 cut-off events. [2024-06-28 03:13:32,027 INFO L125 PetriNetUnfolderBase]: For 246929/246929 co-relation queries the response was YES. [2024-06-28 03:13:32,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34208 conditions, 3977 events. 2582/3977 cut-off events. For 246929/246929 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 21276 event pairs, 499 based on Foata normal form. 6/3982 useless extension candidates. Maximal degree in co-relation 34129. Up to 3701 conditions per place. [2024-06-28 03:13:32,063 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 242 selfloop transitions, 39 changer transitions 0/285 dead transitions. [2024-06-28 03:13:32,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 285 transitions, 3681 flow [2024-06-28 03:13:32,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:13:32,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:13:32,065 INFO L175 Difference]: Start difference. First operand has 177 places, 243 transitions, 2654 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:13:32,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 285 transitions, 3681 flow [2024-06-28 03:13:32,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 285 transitions, 3505 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:32,335 INFO L231 Difference]: Finished difference. Result has 180 places, 249 transitions, 2781 flow [2024-06-28 03:13:32,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2781, PETRI_PLACES=180, PETRI_TRANSITIONS=249} [2024-06-28 03:13:32,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-28 03:13:32,336 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 249 transitions, 2781 flow [2024-06-28 03:13:32,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:32,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:32,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:32,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:13:32,336 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 03:13:32,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash -253431590, now seen corresponding path program 4 times [2024-06-28 03:13:32,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:32,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948376157] [2024-06-28 03:13:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:32,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:33,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:33,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948376157] [2024-06-28 03:13:33,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948376157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:33,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:33,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326520608] [2024-06-28 03:13:33,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:33,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:33,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:33,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:33,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:33,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 249 transitions, 2781 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:33,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:33,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:33,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:34,157 INFO L124 PetriNetUnfolderBase]: 2636/4059 cut-off events. [2024-06-28 03:13:34,158 INFO L125 PetriNetUnfolderBase]: For 266530/266530 co-relation queries the response was YES. [2024-06-28 03:13:34,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35617 conditions, 4059 events. 2636/4059 cut-off events. For 266530/266530 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21777 event pairs, 513 based on Foata normal form. 6/4064 useless extension candidates. Maximal degree in co-relation 35536. Up to 3747 conditions per place. [2024-06-28 03:13:34,198 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 247 selfloop transitions, 40 changer transitions 0/291 dead transitions. [2024-06-28 03:13:34,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 291 transitions, 3970 flow [2024-06-28 03:13:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:13:34,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 03:13:34,203 INFO L175 Difference]: Start difference. First operand has 180 places, 249 transitions, 2781 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:13:34,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 291 transitions, 3970 flow [2024-06-28 03:13:34,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 291 transitions, 3789 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-28 03:13:34,581 INFO L231 Difference]: Finished difference. Result has 185 places, 256 transitions, 2944 flow [2024-06-28 03:13:34,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2944, PETRI_PLACES=185, PETRI_TRANSITIONS=256} [2024-06-28 03:13:34,581 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-28 03:13:34,581 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 256 transitions, 2944 flow [2024-06-28 03:13:34,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:34,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:34,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:34,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:13:34,582 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 03:13:34,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash 467663258, now seen corresponding path program 1 times [2024-06-28 03:13:34,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:34,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309203920] [2024-06-28 03:13:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:34,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:35,826 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 03:13:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309203920] [2024-06-28 03:13:35,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309203920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:35,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:35,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:13:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24754663] [2024-06-28 03:13:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:35,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:13:35,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:13:35,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:13:35,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:35,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 256 transitions, 2944 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:35,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:35,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:35,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:36,959 INFO L124 PetriNetUnfolderBase]: 2829/4365 cut-off events. [2024-06-28 03:13:36,959 INFO L125 PetriNetUnfolderBase]: For 310477/310477 co-relation queries the response was YES. [2024-06-28 03:13:36,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38727 conditions, 4365 events. 2829/4365 cut-off events. For 310477/310477 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23729 event pairs, 548 based on Foata normal form. 24/4388 useless extension candidates. Maximal degree in co-relation 38643. Up to 4020 conditions per place. [2024-06-28 03:13:37,006 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 272 selfloop transitions, 49 changer transitions 0/325 dead transitions. [2024-06-28 03:13:37,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 325 transitions, 4233 flow [2024-06-28 03:13:37,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-28 03:13:37,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:13:37,008 INFO L175 Difference]: Start difference. First operand has 185 places, 256 transitions, 2944 flow. Second operand 11 states and 198 transitions. [2024-06-28 03:13:37,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 325 transitions, 4233 flow [2024-06-28 03:13:37,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 325 transitions, 4035 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-28 03:13:37,481 INFO L231 Difference]: Finished difference. Result has 197 places, 285 transitions, 3331 flow [2024-06-28 03:13:37,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3331, PETRI_PLACES=197, PETRI_TRANSITIONS=285} [2024-06-28 03:13:37,481 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-28 03:13:37,482 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 285 transitions, 3331 flow [2024-06-28 03:13:37,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:37,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:37,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:37,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:13:37,482 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 03:13:37,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash 392532400, now seen corresponding path program 2 times [2024-06-28 03:13:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:37,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21127458] [2024-06-28 03:13:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:37,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:38,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:38,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21127458] [2024-06-28 03:13:38,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21127458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:38,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:38,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:13:38,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581860305] [2024-06-28 03:13:38,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:38,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:13:38,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:38,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:13:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:13:38,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:38,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 285 transitions, 3331 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:38,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:38,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:38,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:39,851 INFO L124 PetriNetUnfolderBase]: 3196/4940 cut-off events. [2024-06-28 03:13:39,851 INFO L125 PetriNetUnfolderBase]: For 353231/353233 co-relation queries the response was YES. [2024-06-28 03:13:39,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44484 conditions, 4940 events. 3196/4940 cut-off events. For 353231/353233 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 27574 event pairs, 577 based on Foata normal form. 26/4965 useless extension candidates. Maximal degree in co-relation 44392. Up to 4383 conditions per place. [2024-06-28 03:13:39,902 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 295 selfloop transitions, 89 changer transitions 0/388 dead transitions. [2024-06-28 03:13:39,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 388 transitions, 5228 flow [2024-06-28 03:13:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 03:13:39,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458980044345898 [2024-06-28 03:13:39,904 INFO L175 Difference]: Start difference. First operand has 197 places, 285 transitions, 3331 flow. Second operand 11 states and 207 transitions. [2024-06-28 03:13:39,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 388 transitions, 5228 flow [2024-06-28 03:13:40,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 388 transitions, 5065 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-06-28 03:13:40,476 INFO L231 Difference]: Finished difference. Result has 211 places, 341 transitions, 4364 flow [2024-06-28 03:13:40,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4364, PETRI_PLACES=211, PETRI_TRANSITIONS=341} [2024-06-28 03:13:40,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-06-28 03:13:40,476 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 341 transitions, 4364 flow [2024-06-28 03:13:40,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:40,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:40,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:40,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:13:40,477 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 03:13:40,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash -699572820, now seen corresponding path program 3 times [2024-06-28 03:13:40,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:40,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304941480] [2024-06-28 03:13:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:41,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:41,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304941480] [2024-06-28 03:13:41,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304941480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:41,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:41,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:13:41,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89233772] [2024-06-28 03:13:41,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:41,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:13:41,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:13:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:13:41,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:41,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 341 transitions, 4364 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:41,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:41,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:41,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:42,839 INFO L124 PetriNetUnfolderBase]: 3292/5110 cut-off events. [2024-06-28 03:13:42,839 INFO L125 PetriNetUnfolderBase]: For 367084/367086 co-relation queries the response was YES. [2024-06-28 03:13:42,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46552 conditions, 5110 events. 3292/5110 cut-off events. For 367084/367086 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 28858 event pairs, 594 based on Foata normal form. 26/5135 useless extension candidates. Maximal degree in co-relation 46453. Up to 4441 conditions per place. [2024-06-28 03:13:42,894 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 233 selfloop transitions, 150 changer transitions 0/387 dead transitions. [2024-06-28 03:13:42,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 387 transitions, 5534 flow [2024-06-28 03:13:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 03:13:42,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611973392461197 [2024-06-28 03:13:42,895 INFO L175 Difference]: Start difference. First operand has 211 places, 341 transitions, 4364 flow. Second operand 11 states and 208 transitions. [2024-06-28 03:13:42,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 387 transitions, 5534 flow [2024-06-28 03:13:43,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 387 transitions, 5421 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:13:43,371 INFO L231 Difference]: Finished difference. Result has 219 places, 343 transitions, 4687 flow [2024-06-28 03:13:43,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4251, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4687, PETRI_PLACES=219, PETRI_TRANSITIONS=343} [2024-06-28 03:13:43,371 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-28 03:13:43,371 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 343 transitions, 4687 flow [2024-06-28 03:13:43,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:43,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:43,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:43,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:13:43,372 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 03:13:43,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash -699565380, now seen corresponding path program 4 times [2024-06-28 03:13:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000299565] [2024-06-28 03:13:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:43,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:44,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:44,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000299565] [2024-06-28 03:13:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000299565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:44,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:44,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:13:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743288013] [2024-06-28 03:13:44,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:44,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:13:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:13:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:13:44,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:44,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 343 transitions, 4687 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:44,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:44,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:44,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:45,868 INFO L124 PetriNetUnfolderBase]: 3628/5686 cut-off events. [2024-06-28 03:13:45,868 INFO L125 PetriNetUnfolderBase]: For 427030/427032 co-relation queries the response was YES. [2024-06-28 03:13:45,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53755 conditions, 5686 events. 3628/5686 cut-off events. For 427030/427032 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 33175 event pairs, 662 based on Foata normal form. 20/5705 useless extension candidates. Maximal degree in co-relation 53655. Up to 4173 conditions per place. [2024-06-28 03:13:45,926 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 234 selfloop transitions, 162 changer transitions 0/400 dead transitions. [2024-06-28 03:13:45,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 400 transitions, 6371 flow [2024-06-28 03:13:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 03:13:45,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700665188470067 [2024-06-28 03:13:45,928 INFO L175 Difference]: Start difference. First operand has 219 places, 343 transitions, 4687 flow. Second operand 11 states and 212 transitions. [2024-06-28 03:13:45,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 400 transitions, 6371 flow [2024-06-28 03:13:46,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 400 transitions, 6017 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:13:46,651 INFO L231 Difference]: Finished difference. Result has 222 places, 351 transitions, 5094 flow [2024-06-28 03:13:46,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4333, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5094, PETRI_PLACES=222, PETRI_TRANSITIONS=351} [2024-06-28 03:13:46,652 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 180 predicate places. [2024-06-28 03:13:46,652 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 351 transitions, 5094 flow [2024-06-28 03:13:46,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:46,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:46,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:46,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:13:46,652 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:46,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1090879099, now seen corresponding path program 1 times [2024-06-28 03:13:46,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:46,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680819659] [2024-06-28 03:13:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:46,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:47,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:47,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680819659] [2024-06-28 03:13:47,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680819659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:47,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:47,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:13:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172499706] [2024-06-28 03:13:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:47,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:13:47,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:47,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:13:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:13:47,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:47,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 351 transitions, 5094 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:47,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:47,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:48,566 INFO L124 PetriNetUnfolderBase]: 3638/5698 cut-off events. [2024-06-28 03:13:48,566 INFO L125 PetriNetUnfolderBase]: For 415589/415589 co-relation queries the response was YES. [2024-06-28 03:13:48,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54278 conditions, 5698 events. 3638/5698 cut-off events. For 415589/415589 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 33256 event pairs, 705 based on Foata normal form. 2/5699 useless extension candidates. Maximal degree in co-relation 54176. Up to 5439 conditions per place. [2024-06-28 03:13:48,626 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 318 selfloop transitions, 56 changer transitions 0/378 dead transitions. [2024-06-28 03:13:48,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 378 transitions, 6141 flow [2024-06-28 03:13:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:13:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:13:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:13:48,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-28 03:13:48,627 INFO L175 Difference]: Start difference. First operand has 222 places, 351 transitions, 5094 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:13:48,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 378 transitions, 6141 flow [2024-06-28 03:13:49,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 378 transitions, 5847 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:49,476 INFO L231 Difference]: Finished difference. Result has 223 places, 360 transitions, 5060 flow [2024-06-28 03:13:49,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4802, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5060, PETRI_PLACES=223, PETRI_TRANSITIONS=360} [2024-06-28 03:13:49,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2024-06-28 03:13:49,476 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 360 transitions, 5060 flow [2024-06-28 03:13:49,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:49,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:49,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:49,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:13:49,477 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:49,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:49,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1999982000, now seen corresponding path program 5 times [2024-06-28 03:13:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:49,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55794225] [2024-06-28 03:13:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:49,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:50,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:50,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55794225] [2024-06-28 03:13:50,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55794225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:50,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:50,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:50,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714557120] [2024-06-28 03:13:50,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:50,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:50,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:50,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:50,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:50,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:50,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 360 transitions, 5060 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:50,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:50,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:50,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:51,718 INFO L124 PetriNetUnfolderBase]: 3641/5708 cut-off events. [2024-06-28 03:13:51,718 INFO L125 PetriNetUnfolderBase]: For 420261/420265 co-relation queries the response was YES. [2024-06-28 03:13:51,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54121 conditions, 5708 events. 3641/5708 cut-off events. For 420261/420265 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 33388 event pairs, 754 based on Foata normal form. 10/5717 useless extension candidates. Maximal degree in co-relation 54016. Up to 5152 conditions per place. [2024-06-28 03:13:51,784 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 321 selfloop transitions, 78 changer transitions 0/403 dead transitions. [2024-06-28 03:13:51,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 403 transitions, 6736 flow [2024-06-28 03:13:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:13:51,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 03:13:51,785 INFO L175 Difference]: Start difference. First operand has 223 places, 360 transitions, 5060 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:13:51,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 403 transitions, 6736 flow [2024-06-28 03:13:52,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 403 transitions, 6652 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 03:13:52,498 INFO L231 Difference]: Finished difference. Result has 230 places, 368 transitions, 5475 flow [2024-06-28 03:13:52,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4976, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5475, PETRI_PLACES=230, PETRI_TRANSITIONS=368} [2024-06-28 03:13:52,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-28 03:13:52,499 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 368 transitions, 5475 flow [2024-06-28 03:13:52,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:52,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:52,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:52,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:13:52,500 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:52,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2005707452, now seen corresponding path program 5 times [2024-06-28 03:13:52,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591341577] [2024-06-28 03:13:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:52,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:53,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:53,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591341577] [2024-06-28 03:13:53,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591341577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:53,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:53,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:13:53,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074877102] [2024-06-28 03:13:53,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:53,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:13:53,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:53,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:13:53,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:13:53,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:53,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 368 transitions, 5475 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:53,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:53,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:53,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:55,028 INFO L124 PetriNetUnfolderBase]: 3909/6154 cut-off events. [2024-06-28 03:13:55,029 INFO L125 PetriNetUnfolderBase]: For 510609/510609 co-relation queries the response was YES. [2024-06-28 03:13:55,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61101 conditions, 6154 events. 3909/6154 cut-off events. For 510609/510609 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 36728 event pairs, 769 based on Foata normal form. 18/6171 useless extension candidates. Maximal degree in co-relation 60993. Up to 5041 conditions per place. [2024-06-28 03:13:55,104 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 264 selfloop transitions, 147 changer transitions 0/415 dead transitions. [2024-06-28 03:13:55,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 415 transitions, 7233 flow [2024-06-28 03:13:55,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:13:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:13:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 03:13:55,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458980044345898 [2024-06-28 03:13:55,105 INFO L175 Difference]: Start difference. First operand has 230 places, 368 transitions, 5475 flow. Second operand 11 states and 207 transitions. [2024-06-28 03:13:55,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 415 transitions, 7233 flow [2024-06-28 03:13:55,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 415 transitions, 6964 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-06-28 03:13:55,977 INFO L231 Difference]: Finished difference. Result has 237 places, 374 transitions, 5867 flow [2024-06-28 03:13:55,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5206, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5867, PETRI_PLACES=237, PETRI_TRANSITIONS=374} [2024-06-28 03:13:55,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-28 03:13:55,978 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 374 transitions, 5867 flow [2024-06-28 03:13:55,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:55,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:55,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:55,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:13:55,979 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:55,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:55,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2005700012, now seen corresponding path program 6 times [2024-06-28 03:13:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492074186] [2024-06-28 03:13:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:57,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:57,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492074186] [2024-06-28 03:13:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492074186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:57,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:57,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:13:57,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654569964] [2024-06-28 03:13:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:57,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:13:57,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:13:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:13:57,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:13:57,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 374 transitions, 5867 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:57,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:57,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:13:57,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:58,521 INFO L124 PetriNetUnfolderBase]: 3873/6112 cut-off events. [2024-06-28 03:13:58,521 INFO L125 PetriNetUnfolderBase]: For 504413/504413 co-relation queries the response was YES. [2024-06-28 03:13:58,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59819 conditions, 6112 events. 3873/6112 cut-off events. For 504413/504413 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 36570 event pairs, 782 based on Foata normal form. 24/6135 useless extension candidates. Maximal degree in co-relation 59708. Up to 5313 conditions per place. [2024-06-28 03:13:58,595 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 266 selfloop transitions, 140 changer transitions 0/410 dead transitions. [2024-06-28 03:13:58,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 410 transitions, 7047 flow [2024-06-28 03:13:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:13:58,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:13:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:13:58,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-28 03:13:58,596 INFO L175 Difference]: Start difference. First operand has 237 places, 374 transitions, 5867 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:13:58,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 410 transitions, 7047 flow [2024-06-28 03:13:59,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 410 transitions, 6707 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:59,676 INFO L231 Difference]: Finished difference. Result has 240 places, 374 transitions, 5815 flow [2024-06-28 03:13:59,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5527, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5815, PETRI_PLACES=240, PETRI_TRANSITIONS=374} [2024-06-28 03:13:59,677 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 198 predicate places. [2024-06-28 03:13:59,677 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 374 transitions, 5815 flow [2024-06-28 03:13:59,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:59,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:59,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:59,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:13:59,678 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 03:13:59,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:59,678 INFO L85 PathProgramCache]: Analyzing trace with hash 219053316, now seen corresponding path program 7 times [2024-06-28 03:13:59,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:59,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829170781] [2024-06-28 03:13:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:59,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:00,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829170781] [2024-06-28 03:14:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829170781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:00,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:00,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505723772] [2024-06-28 03:14:00,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:00,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:00,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:00,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:00,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 374 transitions, 5815 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:00,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:00,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:00,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:02,320 INFO L124 PetriNetUnfolderBase]: 4102/6499 cut-off events. [2024-06-28 03:14:02,320 INFO L125 PetriNetUnfolderBase]: For 541319/541323 co-relation queries the response was YES. [2024-06-28 03:14:02,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64474 conditions, 6499 events. 4102/6499 cut-off events. For 541319/541323 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 39488 event pairs, 715 based on Foata normal form. 22/6520 useless extension candidates. Maximal degree in co-relation 64361. Up to 3736 conditions per place. [2024-06-28 03:14:02,393 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 173 selfloop transitions, 251 changer transitions 0/428 dead transitions. [2024-06-28 03:14:02,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 428 transitions, 7543 flow [2024-06-28 03:14:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:14:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:14:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:14:02,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745011086474501 [2024-06-28 03:14:02,394 INFO L175 Difference]: Start difference. First operand has 240 places, 374 transitions, 5815 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:14:02,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 428 transitions, 7543 flow [2024-06-28 03:14:03,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 428 transitions, 7263 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:14:03,233 INFO L231 Difference]: Finished difference. Result has 244 places, 380 transitions, 6462 flow [2024-06-28 03:14:03,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5535, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6462, PETRI_PLACES=244, PETRI_TRANSITIONS=380} [2024-06-28 03:14:03,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-28 03:14:03,234 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 380 transitions, 6462 flow [2024-06-28 03:14:03,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:03,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:03,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:03,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:14:03,234 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 03:14:03,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:03,235 INFO L85 PathProgramCache]: Analyzing trace with hash 209849106, now seen corresponding path program 8 times [2024-06-28 03:14:03,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:03,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864184725] [2024-06-28 03:14:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:03,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864184725] [2024-06-28 03:14:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864184725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:04,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077602476] [2024-06-28 03:14:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:04,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:04,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:04,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 380 transitions, 6462 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:04,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:04,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:04,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:05,886 INFO L124 PetriNetUnfolderBase]: 4188/6639 cut-off events. [2024-06-28 03:14:05,887 INFO L125 PetriNetUnfolderBase]: For 588102/588102 co-relation queries the response was YES. [2024-06-28 03:14:05,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68062 conditions, 6639 events. 4188/6639 cut-off events. For 588102/588102 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 40745 event pairs, 870 based on Foata normal form. 24/6662 useless extension candidates. Maximal degree in co-relation 67947. Up to 5674 conditions per place. [2024-06-28 03:14:05,967 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 199 selfloop transitions, 214 changer transitions 0/417 dead transitions. [2024-06-28 03:14:05,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 417 transitions, 7700 flow [2024-06-28 03:14:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:14:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:14:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:14:05,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:14:05,969 INFO L175 Difference]: Start difference. First operand has 244 places, 380 transitions, 6462 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:14:05,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 417 transitions, 7700 flow [2024-06-28 03:14:07,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 417 transitions, 7286 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 03:14:07,032 INFO L231 Difference]: Finished difference. Result has 247 places, 382 transitions, 6634 flow [2024-06-28 03:14:07,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6634, PETRI_PLACES=247, PETRI_TRANSITIONS=382} [2024-06-28 03:14:07,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-28 03:14:07,033 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 382 transitions, 6634 flow [2024-06-28 03:14:07,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:07,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:07,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:07,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:14:07,034 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 03:14:07,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash 480701070, now seen corresponding path program 9 times [2024-06-28 03:14:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:07,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400894704] [2024-06-28 03:14:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:08,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400894704] [2024-06-28 03:14:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400894704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:08,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:08,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823538929] [2024-06-28 03:14:08,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:08,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:08,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:08,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:08,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 382 transitions, 6634 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:08,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:08,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:08,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:09,697 INFO L124 PetriNetUnfolderBase]: 4236/6737 cut-off events. [2024-06-28 03:14:09,697 INFO L125 PetriNetUnfolderBase]: For 595556/595556 co-relation queries the response was YES. [2024-06-28 03:14:09,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68869 conditions, 6737 events. 4236/6737 cut-off events. For 595556/595556 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 41774 event pairs, 882 based on Foata normal form. 24/6760 useless extension candidates. Maximal degree in co-relation 68752. Up to 5946 conditions per place. [2024-06-28 03:14:09,779 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 257 selfloop transitions, 158 changer transitions 0/419 dead transitions. [2024-06-28 03:14:09,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 419 transitions, 7872 flow [2024-06-28 03:14:09,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:14:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:14:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:14:09,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:14:09,780 INFO L175 Difference]: Start difference. First operand has 247 places, 382 transitions, 6634 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:14:09,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 419 transitions, 7872 flow [2024-06-28 03:14:11,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 419 transitions, 7384 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 03:14:11,284 INFO L231 Difference]: Finished difference. Result has 249 places, 384 transitions, 6614 flow [2024-06-28 03:14:11,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6146, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6614, PETRI_PLACES=249, PETRI_TRANSITIONS=384} [2024-06-28 03:14:11,284 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 03:14:11,284 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 384 transitions, 6614 flow [2024-06-28 03:14:11,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:11,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:11,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:11,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:14:11,285 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:11,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:11,285 INFO L85 PathProgramCache]: Analyzing trace with hash 480708510, now seen corresponding path program 10 times [2024-06-28 03:14:11,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:11,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238672684] [2024-06-28 03:14:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:11,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:12,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:12,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238672684] [2024-06-28 03:14:12,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238672684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:12,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:12,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659047921] [2024-06-28 03:14:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:12,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:12,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 384 transitions, 6614 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:12,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:12,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:12,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:14,104 INFO L124 PetriNetUnfolderBase]: 4297/6852 cut-off events. [2024-06-28 03:14:14,104 INFO L125 PetriNetUnfolderBase]: For 596426/596426 co-relation queries the response was YES. [2024-06-28 03:14:14,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69730 conditions, 6852 events. 4297/6852 cut-off events. For 596426/596426 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 42737 event pairs, 887 based on Foata normal form. 18/6869 useless extension candidates. Maximal degree in co-relation 69612. Up to 5808 conditions per place. [2024-06-28 03:14:14,187 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 255 selfloop transitions, 165 changer transitions 0/424 dead transitions. [2024-06-28 03:14:14,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 424 transitions, 7906 flow [2024-06-28 03:14:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:14:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:14:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 03:14:14,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523281596452328 [2024-06-28 03:14:14,188 INFO L175 Difference]: Start difference. First operand has 249 places, 384 transitions, 6614 flow. Second operand 11 states and 204 transitions. [2024-06-28 03:14:14,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 424 transitions, 7906 flow [2024-06-28 03:14:15,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 424 transitions, 7526 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 03:14:15,334 INFO L231 Difference]: Finished difference. Result has 252 places, 386 transitions, 6719 flow [2024-06-28 03:14:15,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6234, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6719, PETRI_PLACES=252, PETRI_TRANSITIONS=386} [2024-06-28 03:14:15,334 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-28 03:14:15,334 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 386 transitions, 6719 flow [2024-06-28 03:14:15,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:15,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:15,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:15,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:14:15,335 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 03:14:15,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:15,336 INFO L85 PathProgramCache]: Analyzing trace with hash 737209020, now seen corresponding path program 11 times [2024-06-28 03:14:15,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:15,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768737948] [2024-06-28 03:14:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:15,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:16,290 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 03:14:16,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:16,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768737948] [2024-06-28 03:14:16,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768737948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:16,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:16,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243486098] [2024-06-28 03:14:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:16,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:16,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 386 transitions, 6719 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:16,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:16,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:16,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:18,182 INFO L124 PetriNetUnfolderBase]: 4264/6807 cut-off events. [2024-06-28 03:14:18,182 INFO L125 PetriNetUnfolderBase]: For 575123/575127 co-relation queries the response was YES. [2024-06-28 03:14:18,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67971 conditions, 6807 events. 4264/6807 cut-off events. For 575123/575127 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 42523 event pairs, 853 based on Foata normal form. 22/6828 useless extension candidates. Maximal degree in co-relation 67852. Up to 5693 conditions per place. [2024-06-28 03:14:18,265 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 202 selfloop transitions, 225 changer transitions 0/431 dead transitions. [2024-06-28 03:14:18,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 431 transitions, 7907 flow [2024-06-28 03:14:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:14:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:14:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 03:14:18,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700665188470067 [2024-06-28 03:14:18,266 INFO L175 Difference]: Start difference. First operand has 252 places, 386 transitions, 6719 flow. Second operand 11 states and 212 transitions. [2024-06-28 03:14:18,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 431 transitions, 7907 flow [2024-06-28 03:14:19,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 431 transitions, 7502 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 03:14:19,462 INFO L231 Difference]: Finished difference. Result has 255 places, 386 transitions, 6771 flow [2024-06-28 03:14:19,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6314, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6771, PETRI_PLACES=255, PETRI_TRANSITIONS=386} [2024-06-28 03:14:19,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2024-06-28 03:14:19,463 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 386 transitions, 6771 flow [2024-06-28 03:14:19,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:19,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:19,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:19,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:14:19,463 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:19,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash 559289605, now seen corresponding path program 2 times [2024-06-28 03:14:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:19,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428942585] [2024-06-28 03:14:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:20,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428942585] [2024-06-28 03:14:20,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428942585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:20,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:20,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:20,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979233528] [2024-06-28 03:14:20,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:20,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:20,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:20,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:20,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:20,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:20,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 386 transitions, 6771 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:20,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:20,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:20,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:21,693 INFO L124 PetriNetUnfolderBase]: 4274/6817 cut-off events. [2024-06-28 03:14:21,694 INFO L125 PetriNetUnfolderBase]: For 559015/559015 co-relation queries the response was YES. [2024-06-28 03:14:21,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68109 conditions, 6817 events. 4274/6817 cut-off events. For 559015/559015 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 42462 event pairs, 882 based on Foata normal form. 2/6818 useless extension candidates. Maximal degree in co-relation 67989. Up to 6503 conditions per place. [2024-06-28 03:14:21,775 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 337 selfloop transitions, 60 changer transitions 0/401 dead transitions. [2024-06-28 03:14:21,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 401 transitions, 7785 flow [2024-06-28 03:14:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:14:21,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42160278745644597 [2024-06-28 03:14:21,776 INFO L175 Difference]: Start difference. First operand has 255 places, 386 transitions, 6771 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:14:21,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 401 transitions, 7785 flow [2024-06-28 03:14:23,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 401 transitions, 6980 flow, removed 49 selfloop flow, removed 12 redundant places. [2024-06-28 03:14:23,473 INFO L231 Difference]: Finished difference. Result has 250 places, 389 transitions, 6146 flow [2024-06-28 03:14:23,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5966, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6146, PETRI_PLACES=250, PETRI_TRANSITIONS=389} [2024-06-28 03:14:23,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-06-28 03:14:23,474 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 389 transitions, 6146 flow [2024-06-28 03:14:23,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:23,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:23,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:23,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:14:23,475 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:23,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1752594569, now seen corresponding path program 3 times [2024-06-28 03:14:23,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:23,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914527779] [2024-06-28 03:14:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:23,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:24,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:24,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914527779] [2024-06-28 03:14:24,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914527779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:24,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:24,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:24,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184014446] [2024-06-28 03:14:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:24,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:24,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:24,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 389 transitions, 6146 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:24,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:24,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:24,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:25,759 INFO L124 PetriNetUnfolderBase]: 4268/6809 cut-off events. [2024-06-28 03:14:25,760 INFO L125 PetriNetUnfolderBase]: For 547902/547902 co-relation queries the response was YES. [2024-06-28 03:14:25,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65391 conditions, 6809 events. 4268/6809 cut-off events. For 547902/547902 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 42437 event pairs, 882 based on Foata normal form. 2/6810 useless extension candidates. Maximal degree in co-relation 65273. Up to 6498 conditions per place. [2024-06-28 03:14:25,836 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 346 selfloop transitions, 52 changer transitions 0/402 dead transitions. [2024-06-28 03:14:25,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 402 transitions, 7022 flow [2024-06-28 03:14:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:14:25,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42160278745644597 [2024-06-28 03:14:25,837 INFO L175 Difference]: Start difference. First operand has 250 places, 389 transitions, 6146 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:14:25,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 402 transitions, 7022 flow [2024-06-28 03:14:27,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 402 transitions, 6809 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 03:14:27,028 INFO L231 Difference]: Finished difference. Result has 252 places, 389 transitions, 6045 flow [2024-06-28 03:14:27,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6045, PETRI_PLACES=252, PETRI_TRANSITIONS=389} [2024-06-28 03:14:27,028 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-28 03:14:27,029 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 389 transitions, 6045 flow [2024-06-28 03:14:27,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:27,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:27,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:27,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:14:27,029 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 03:14:27,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash -746733280, now seen corresponding path program 12 times [2024-06-28 03:14:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:27,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910268179] [2024-06-28 03:14:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:27,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:28,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910268179] [2024-06-28 03:14:28,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910268179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:28,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:28,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:28,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148426173] [2024-06-28 03:14:28,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:28,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:28,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:28,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:28,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:28,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 389 transitions, 6045 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:28,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:28,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:28,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:29,906 INFO L124 PetriNetUnfolderBase]: 4498/7168 cut-off events. [2024-06-28 03:14:29,906 INFO L125 PetriNetUnfolderBase]: For 584386/584388 co-relation queries the response was YES. [2024-06-28 03:14:29,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67879 conditions, 7168 events. 4498/7168 cut-off events. For 584386/584388 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 45036 event pairs, 871 based on Foata normal form. 26/7193 useless extension candidates. Maximal degree in co-relation 67761. Up to 6448 conditions per place. [2024-06-28 03:14:29,988 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 358 selfloop transitions, 111 changer transitions 0/473 dead transitions. [2024-06-28 03:14:29,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 473 transitions, 7945 flow [2024-06-28 03:14:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:14:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:14:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 03:14:29,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567627494456763 [2024-06-28 03:14:29,990 INFO L175 Difference]: Start difference. First operand has 252 places, 389 transitions, 6045 flow. Second operand 11 states and 206 transitions. [2024-06-28 03:14:29,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 473 transitions, 7945 flow [2024-06-28 03:14:31,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 473 transitions, 7789 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:14:31,206 INFO L231 Difference]: Finished difference. Result has 262 places, 428 transitions, 6933 flow [2024-06-28 03:14:31,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5903, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6933, PETRI_PLACES=262, PETRI_TRANSITIONS=428} [2024-06-28 03:14:31,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2024-06-28 03:14:31,207 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 428 transitions, 6933 flow [2024-06-28 03:14:31,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:31,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:31,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:31,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:14:31,208 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:31,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1575647561, now seen corresponding path program 1 times [2024-06-28 03:14:31,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:31,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965783652] [2024-06-28 03:14:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:31,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:31,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965783652] [2024-06-28 03:14:31,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965783652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:31,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:31,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:14:31,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742983737] [2024-06-28 03:14:31,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:31,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:14:31,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:31,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:14:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:14:31,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:31,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 428 transitions, 6933 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:31,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:31,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:31,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:33,195 INFO L124 PetriNetUnfolderBase]: 4397/7084 cut-off events. [2024-06-28 03:14:33,196 INFO L125 PetriNetUnfolderBase]: For 511447/511447 co-relation queries the response was YES. [2024-06-28 03:14:33,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66948 conditions, 7084 events. 4397/7084 cut-off events. For 511447/511447 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 45403 event pairs, 1059 based on Foata normal form. 4/7082 useless extension candidates. Maximal degree in co-relation 66825. Up to 6738 conditions per place. [2024-06-28 03:14:33,286 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 416 selfloop transitions, 29 changer transitions 0/454 dead transitions. [2024-06-28 03:14:33,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 454 transitions, 8135 flow [2024-06-28 03:14:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:33,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:14:33,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45993031358885017 [2024-06-28 03:14:33,288 INFO L175 Difference]: Start difference. First operand has 262 places, 428 transitions, 6933 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:14:33,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 454 transitions, 8135 flow [2024-06-28 03:14:34,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 454 transitions, 7852 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:14:34,526 INFO L231 Difference]: Finished difference. Result has 261 places, 438 transitions, 6856 flow [2024-06-28 03:14:34,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6650, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6856, PETRI_PLACES=261, PETRI_TRANSITIONS=438} [2024-06-28 03:14:34,527 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 03:14:34,527 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 438 transitions, 6856 flow [2024-06-28 03:14:34,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:34,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:34,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:34,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:14:34,527 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:34,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash 559295557, now seen corresponding path program 2 times [2024-06-28 03:14:34,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:34,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279311139] [2024-06-28 03:14:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:34,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:35,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:35,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279311139] [2024-06-28 03:14:35,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279311139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:35,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:35,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:35,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892894825] [2024-06-28 03:14:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:35,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:35,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:35,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 438 transitions, 6856 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:35,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:35,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:35,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:36,597 INFO L124 PetriNetUnfolderBase]: 4407/7100 cut-off events. [2024-06-28 03:14:36,598 INFO L125 PetriNetUnfolderBase]: For 518368/518368 co-relation queries the response was YES. [2024-06-28 03:14:36,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67133 conditions, 7100 events. 4407/7100 cut-off events. For 518368/518368 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 45437 event pairs, 1061 based on Foata normal form. 3/7099 useless extension candidates. Maximal degree in co-relation 67009. Up to 6824 conditions per place. [2024-06-28 03:14:36,689 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 425 selfloop transitions, 17 changer transitions 0/451 dead transitions. [2024-06-28 03:14:36,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 451 transitions, 7824 flow [2024-06-28 03:14:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:14:36,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181184668989547 [2024-06-28 03:14:36,690 INFO L175 Difference]: Start difference. First operand has 261 places, 438 transitions, 6856 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:14:36,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 451 transitions, 7824 flow [2024-06-28 03:14:38,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 451 transitions, 7746 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-28 03:14:38,056 INFO L231 Difference]: Finished difference. Result has 266 places, 441 transitions, 6879 flow [2024-06-28 03:14:38,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6778, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6879, PETRI_PLACES=266, PETRI_TRANSITIONS=441} [2024-06-28 03:14:38,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 224 predicate places. [2024-06-28 03:14:38,057 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 441 transitions, 6879 flow [2024-06-28 03:14:38,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:38,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:38,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:38,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:14:38,057 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:38,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1752779081, now seen corresponding path program 3 times [2024-06-28 03:14:38,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:38,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137671073] [2024-06-28 03:14:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:38,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:38,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137671073] [2024-06-28 03:14:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137671073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:38,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:38,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:14:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363842668] [2024-06-28 03:14:38,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:38,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:14:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:14:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:14:38,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:38,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 441 transitions, 6879 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:38,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:38,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:38,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:40,007 INFO L124 PetriNetUnfolderBase]: 4405/7095 cut-off events. [2024-06-28 03:14:40,008 INFO L125 PetriNetUnfolderBase]: For 523597/523597 co-relation queries the response was YES. [2024-06-28 03:14:40,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67148 conditions, 7095 events. 4405/7095 cut-off events. For 523597/523597 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 45456 event pairs, 1058 based on Foata normal form. 2/7091 useless extension candidates. Maximal degree in co-relation 67021. Up to 6813 conditions per place. [2024-06-28 03:14:40,098 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 424 selfloop transitions, 22 changer transitions 0/455 dead transitions. [2024-06-28 03:14:40,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 455 transitions, 7865 flow [2024-06-28 03:14:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:14:40,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:14:40,100 INFO L175 Difference]: Start difference. First operand has 266 places, 441 transitions, 6879 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:14:40,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 455 transitions, 7865 flow [2024-06-28 03:14:41,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 455 transitions, 7787 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 03:14:41,488 INFO L231 Difference]: Finished difference. Result has 268 places, 444 transitions, 6917 flow [2024-06-28 03:14:41,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6801, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6917, PETRI_PLACES=268, PETRI_TRANSITIONS=444} [2024-06-28 03:14:41,489 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-28 03:14:41,489 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 444 transitions, 6917 flow [2024-06-28 03:14:41,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:41,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:41,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:41,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:14:41,490 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:41,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash 485156801, now seen corresponding path program 1 times [2024-06-28 03:14:41,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:41,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182761053] [2024-06-28 03:14:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:42,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:42,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182761053] [2024-06-28 03:14:42,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182761053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:42,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:42,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:42,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302445165] [2024-06-28 03:14:42,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:42,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:42,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:42,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:42,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 444 transitions, 6917 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:42,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:42,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:42,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:44,457 INFO L124 PetriNetUnfolderBase]: 4618/7360 cut-off events. [2024-06-28 03:14:44,457 INFO L125 PetriNetUnfolderBase]: For 639242/639244 co-relation queries the response was YES. [2024-06-28 03:14:44,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71207 conditions, 7360 events. 4618/7360 cut-off events. For 639242/639244 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 46586 event pairs, 879 based on Foata normal form. 20/7379 useless extension candidates. Maximal degree in co-relation 71080. Up to 6589 conditions per place. [2024-06-28 03:14:44,551 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 369 selfloop transitions, 114 changer transitions 0/487 dead transitions. [2024-06-28 03:14:44,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 487 transitions, 8431 flow [2024-06-28 03:14:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:14:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:14:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:14:44,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 03:14:44,552 INFO L175 Difference]: Start difference. First operand has 268 places, 444 transitions, 6917 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:14:44,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 487 transitions, 8431 flow [2024-06-28 03:14:45,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 487 transitions, 8341 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 03:14:45,813 INFO L231 Difference]: Finished difference. Result has 273 places, 446 transitions, 7202 flow [2024-06-28 03:14:45,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6827, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7202, PETRI_PLACES=273, PETRI_TRANSITIONS=446} [2024-06-28 03:14:45,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-28 03:14:45,814 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 446 transitions, 7202 flow [2024-06-28 03:14:45,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:45,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:45,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:45,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:14:45,814 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:45,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash 489740771, now seen corresponding path program 2 times [2024-06-28 03:14:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441514834] [2024-06-28 03:14:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:47,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:47,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441514834] [2024-06-28 03:14:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441514834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:47,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:47,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093391623] [2024-06-28 03:14:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:47,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:47,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:47,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 446 transitions, 7202 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:47,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:47,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:47,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:48,905 INFO L124 PetriNetUnfolderBase]: 4686/7476 cut-off events. [2024-06-28 03:14:48,905 INFO L125 PetriNetUnfolderBase]: For 662872/662874 co-relation queries the response was YES. [2024-06-28 03:14:48,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73273 conditions, 7476 events. 4686/7476 cut-off events. For 662872/662874 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 47411 event pairs, 950 based on Foata normal form. 20/7495 useless extension candidates. Maximal degree in co-relation 73145. Up to 6740 conditions per place. [2024-06-28 03:14:49,000 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 354 selfloop transitions, 129 changer transitions 0/487 dead transitions. [2024-06-28 03:14:49,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 487 transitions, 8590 flow [2024-06-28 03:14:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:14:49,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:14:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 03:14:49,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-28 03:14:49,001 INFO L175 Difference]: Start difference. First operand has 273 places, 446 transitions, 7202 flow. Second operand 10 states and 187 transitions. [2024-06-28 03:14:49,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 487 transitions, 8590 flow [2024-06-28 03:14:50,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 487 transitions, 8307 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 03:14:50,195 INFO L231 Difference]: Finished difference. Result has 276 places, 448 transitions, 7330 flow [2024-06-28 03:14:50,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6919, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7330, PETRI_PLACES=276, PETRI_TRANSITIONS=448} [2024-06-28 03:14:50,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-28 03:14:50,196 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 448 transitions, 7330 flow [2024-06-28 03:14:50,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:50,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:50,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:50,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:14:50,197 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 03:14:50,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:50,197 INFO L85 PathProgramCache]: Analyzing trace with hash -768952379, now seen corresponding path program 3 times [2024-06-28 03:14:50,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:50,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856525319] [2024-06-28 03:14:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:50,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:51,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:51,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856525319] [2024-06-28 03:14:51,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856525319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:51,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:51,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801923533] [2024-06-28 03:14:51,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:51,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:51,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:51,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:51,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:51,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:51,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 448 transitions, 7330 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:51,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:51,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:51,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:53,229 INFO L124 PetriNetUnfolderBase]: 4754/7592 cut-off events. [2024-06-28 03:14:53,229 INFO L125 PetriNetUnfolderBase]: For 680226/680228 co-relation queries the response was YES. [2024-06-28 03:14:53,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74644 conditions, 7592 events. 4754/7592 cut-off events. For 680226/680228 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 48095 event pairs, 904 based on Foata normal form. 20/7611 useless extension candidates. Maximal degree in co-relation 74515. Up to 7045 conditions per place. [2024-06-28 03:14:53,329 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 416 selfloop transitions, 72 changer transitions 0/492 dead transitions. [2024-06-28 03:14:53,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 492 transitions, 8872 flow [2024-06-28 03:14:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:14:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:14:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:14:53,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 03:14:53,331 INFO L175 Difference]: Start difference. First operand has 276 places, 448 transitions, 7330 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:14:53,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 492 transitions, 8872 flow [2024-06-28 03:14:55,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 492 transitions, 8507 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 03:14:55,311 INFO L231 Difference]: Finished difference. Result has 278 places, 450 transitions, 7264 flow [2024-06-28 03:14:55,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6965, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7264, PETRI_PLACES=278, PETRI_TRANSITIONS=450} [2024-06-28 03:14:55,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-28 03:14:55,312 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 450 transitions, 7264 flow [2024-06-28 03:14:55,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:55,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:55,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:55,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:14:55,313 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 03:14:55,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash 733556089, now seen corresponding path program 4 times [2024-06-28 03:14:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605803806] [2024-06-28 03:14:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:55,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:56,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605803806] [2024-06-28 03:14:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605803806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:56,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:56,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:14:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041090448] [2024-06-28 03:14:56,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:56,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:14:56,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:14:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:14:56,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:14:56,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 450 transitions, 7264 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:56,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:56,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:14:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:58,438 INFO L124 PetriNetUnfolderBase]: 4822/7706 cut-off events. [2024-06-28 03:14:58,438 INFO L125 PetriNetUnfolderBase]: For 701724/701726 co-relation queries the response was YES. [2024-06-28 03:14:58,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75417 conditions, 7706 events. 4822/7706 cut-off events. For 701724/701726 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 49337 event pairs, 1036 based on Foata normal form. 20/7725 useless extension candidates. Maximal degree in co-relation 75287. Up to 7174 conditions per place. [2024-06-28 03:14:58,535 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 436 selfloop transitions, 53 changer transitions 0/493 dead transitions. [2024-06-28 03:14:58,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 493 transitions, 8975 flow [2024-06-28 03:14:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:14:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:14:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:14:58,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 03:14:58,537 INFO L175 Difference]: Start difference. First operand has 278 places, 450 transitions, 7264 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:14:58,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 493 transitions, 8975 flow [2024-06-28 03:15:00,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 493 transitions, 8766 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 03:15:00,227 INFO L231 Difference]: Finished difference. Result has 282 places, 452 transitions, 7320 flow [2024-06-28 03:15:00,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7055, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7320, PETRI_PLACES=282, PETRI_TRANSITIONS=452} [2024-06-28 03:15:00,227 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-06-28 03:15:00,227 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 452 transitions, 7320 flow [2024-06-28 03:15:00,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:00,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:00,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:00,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:15:00,228 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:00,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash 392884516, now seen corresponding path program 1 times [2024-06-28 03:15:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:00,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282643152] [2024-06-28 03:15:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282643152] [2024-06-28 03:15:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282643152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:00,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:00,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174235556] [2024-06-28 03:15:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:00,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:00,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:00,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 452 transitions, 7320 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:00,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:00,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:00,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:02,542 INFO L124 PetriNetUnfolderBase]: 4826/7714 cut-off events. [2024-06-28 03:15:02,542 INFO L125 PetriNetUnfolderBase]: For 674616/674618 co-relation queries the response was YES. [2024-06-28 03:15:02,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75067 conditions, 7714 events. 4826/7714 cut-off events. For 674616/674618 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49368 event pairs, 1085 based on Foata normal form. 6/7719 useless extension candidates. Maximal degree in co-relation 74936. Up to 7395 conditions per place. [2024-06-28 03:15:02,643 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 422 selfloop transitions, 50 changer transitions 0/476 dead transitions. [2024-06-28 03:15:02,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 476 transitions, 8559 flow [2024-06-28 03:15:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 03:15:02,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529616724738676 [2024-06-28 03:15:02,644 INFO L175 Difference]: Start difference. First operand has 282 places, 452 transitions, 7320 flow. Second operand 7 states and 130 transitions. [2024-06-28 03:15:02,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 476 transitions, 8559 flow [2024-06-28 03:15:04,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 476 transitions, 8363 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 03:15:04,184 INFO L231 Difference]: Finished difference. Result has 282 places, 457 transitions, 7335 flow [2024-06-28 03:15:04,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7131, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7335, PETRI_PLACES=282, PETRI_TRANSITIONS=457} [2024-06-28 03:15:04,185 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-06-28 03:15:04,185 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 457 transitions, 7335 flow [2024-06-28 03:15:04,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:04,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:04,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:04,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:15:04,185 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:04,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash 398598436, now seen corresponding path program 2 times [2024-06-28 03:15:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:04,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488645951] [2024-06-28 03:15:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:04,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:04,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:04,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488645951] [2024-06-28 03:15:04,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488645951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:04,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:04,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:04,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787724128] [2024-06-28 03:15:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:04,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:04,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:04,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 457 transitions, 7335 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:04,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:04,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:04,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:06,490 INFO L124 PetriNetUnfolderBase]: 4836/7730 cut-off events. [2024-06-28 03:15:06,491 INFO L125 PetriNetUnfolderBase]: For 669301/669303 co-relation queries the response was YES. [2024-06-28 03:15:06,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74669 conditions, 7730 events. 4836/7730 cut-off events. For 669301/669303 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49449 event pairs, 1085 based on Foata normal form. 4/7733 useless extension candidates. Maximal degree in co-relation 74537. Up to 7503 conditions per place. [2024-06-28 03:15:06,596 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 439 selfloop transitions, 34 changer transitions 0/477 dead transitions. [2024-06-28 03:15:06,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 477 transitions, 8451 flow [2024-06-28 03:15:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:15:06,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 03:15:06,597 INFO L175 Difference]: Start difference. First operand has 282 places, 457 transitions, 7335 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:15:06,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 477 transitions, 8451 flow [2024-06-28 03:15:08,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 477 transitions, 8356 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:08,321 INFO L231 Difference]: Finished difference. Result has 287 places, 464 transitions, 7465 flow [2024-06-28 03:15:08,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7465, PETRI_PLACES=287, PETRI_TRANSITIONS=464} [2024-06-28 03:15:08,322 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 03:15:08,322 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 464 transitions, 7465 flow [2024-06-28 03:15:08,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:08,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:08,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:08,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:15:08,322 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:08,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash 398606372, now seen corresponding path program 1 times [2024-06-28 03:15:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:08,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892133375] [2024-06-28 03:15:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:09,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:09,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892133375] [2024-06-28 03:15:09,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892133375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:09,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:09,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:09,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630281195] [2024-06-28 03:15:09,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:09,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:09,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:09,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:09,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:09,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 464 transitions, 7465 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:09,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:09,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:09,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:10,973 INFO L124 PetriNetUnfolderBase]: 4856/7758 cut-off events. [2024-06-28 03:15:10,973 INFO L125 PetriNetUnfolderBase]: For 687968/687968 co-relation queries the response was YES. [2024-06-28 03:15:11,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75044 conditions, 7758 events. 4856/7758 cut-off events. For 687968/687968 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49535 event pairs, 969 based on Foata normal form. 4/7761 useless extension candidates. Maximal degree in co-relation 74910. Up to 7379 conditions per place. [2024-06-28 03:15:11,086 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 414 selfloop transitions, 73 changer transitions 0/491 dead transitions. [2024-06-28 03:15:11,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 491 transitions, 8783 flow [2024-06-28 03:15:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:11,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:15:11,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:15:11,087 INFO L175 Difference]: Start difference. First operand has 287 places, 464 transitions, 7465 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:15:11,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 491 transitions, 8783 flow [2024-06-28 03:15:13,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 491 transitions, 8658 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:15:13,177 INFO L231 Difference]: Finished difference. Result has 289 places, 470 transitions, 7610 flow [2024-06-28 03:15:13,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7340, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7610, PETRI_PLACES=289, PETRI_TRANSITIONS=470} [2024-06-28 03:15:13,178 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-28 03:15:13,178 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 470 transitions, 7610 flow [2024-06-28 03:15:13,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:13,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:13,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:13,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:15:13,179 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:13,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:13,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1593124163, now seen corresponding path program 5 times [2024-06-28 03:15:13,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:13,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646254131] [2024-06-28 03:15:13,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:13,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:14,285 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 03:15:14,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:14,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646254131] [2024-06-28 03:15:14,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646254131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:14,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:14,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:15:14,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136980925] [2024-06-28 03:15:14,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:14,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:15:14,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:14,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:15:14,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:15:14,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:14,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 470 transitions, 7610 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:14,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:14,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:14,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:16,222 INFO L124 PetriNetUnfolderBase]: 4863/7773 cut-off events. [2024-06-28 03:15:16,222 INFO L125 PetriNetUnfolderBase]: For 719601/719607 co-relation queries the response was YES. [2024-06-28 03:15:16,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75409 conditions, 7773 events. 4863/7773 cut-off events. For 719601/719607 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 49816 event pairs, 1038 based on Foata normal form. 24/7796 useless extension candidates. Maximal degree in co-relation 75275. Up to 7047 conditions per place. [2024-06-28 03:15:16,317 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 420 selfloop transitions, 87 changer transitions 0/511 dead transitions. [2024-06-28 03:15:16,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 511 transitions, 9365 flow [2024-06-28 03:15:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:15:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:15:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:15:16,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 03:15:16,318 INFO L175 Difference]: Start difference. First operand has 289 places, 470 transitions, 7610 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:15:16,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 511 transitions, 9365 flow [2024-06-28 03:15:18,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 511 transitions, 9259 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:18,315 INFO L231 Difference]: Finished difference. Result has 294 places, 470 transitions, 7635 flow [2024-06-28 03:15:18,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7390, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7635, PETRI_PLACES=294, PETRI_TRANSITIONS=470} [2024-06-28 03:15:18,316 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-28 03:15:18,316 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 470 transitions, 7635 flow [2024-06-28 03:15:18,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:18,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:18,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:18,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:15:18,316 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:18,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1588994340, now seen corresponding path program 3 times [2024-06-28 03:15:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:18,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078606276] [2024-06-28 03:15:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:18,926 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 03:15:18,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078606276] [2024-06-28 03:15:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078606276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:18,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371258318] [2024-06-28 03:15:18,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:18,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:18,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:18,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:18,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:18,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 470 transitions, 7635 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:18,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:18,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:18,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:20,586 INFO L124 PetriNetUnfolderBase]: 4883/7807 cut-off events. [2024-06-28 03:15:20,587 INFO L125 PetriNetUnfolderBase]: For 708330/708336 co-relation queries the response was YES. [2024-06-28 03:15:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76181 conditions, 7807 events. 4883/7807 cut-off events. For 708330/708336 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 49995 event pairs, 1093 based on Foata normal form. 10/7816 useless extension candidates. Maximal degree in co-relation 76045. Up to 7311 conditions per place. [2024-06-28 03:15:20,705 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 405 selfloop transitions, 86 changer transitions 0/495 dead transitions. [2024-06-28 03:15:20,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 495 transitions, 9083 flow [2024-06-28 03:15:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:15:20,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564459930313589 [2024-06-28 03:15:20,707 INFO L175 Difference]: Start difference. First operand has 294 places, 470 transitions, 7635 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:15:20,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 495 transitions, 9083 flow [2024-06-28 03:15:22,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 495 transitions, 8800 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 03:15:22,608 INFO L231 Difference]: Finished difference. Result has 293 places, 477 transitions, 7660 flow [2024-06-28 03:15:22,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7364, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7660, PETRI_PLACES=293, PETRI_TRANSITIONS=477} [2024-06-28 03:15:22,608 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-28 03:15:22,608 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 477 transitions, 7660 flow [2024-06-28 03:15:22,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:22,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:22,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:22,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:15:22,609 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:22,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1779060050, now seen corresponding path program 4 times [2024-06-28 03:15:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:22,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341692197] [2024-06-28 03:15:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:22,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341692197] [2024-06-28 03:15:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341692197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:23,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599382173] [2024-06-28 03:15:23,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:23,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:23,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:23,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:23,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:23,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 477 transitions, 7660 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:23,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:23,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:23,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:24,893 INFO L124 PetriNetUnfolderBase]: 4887/7815 cut-off events. [2024-06-28 03:15:24,893 INFO L125 PetriNetUnfolderBase]: For 701822/701828 co-relation queries the response was YES. [2024-06-28 03:15:24,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75478 conditions, 7815 events. 4887/7815 cut-off events. For 701822/701828 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 50113 event pairs, 1092 based on Foata normal form. 10/7824 useless extension candidates. Maximal degree in co-relation 75341. Up to 7312 conditions per place. [2024-06-28 03:15:24,994 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 396 selfloop transitions, 98 changer transitions 0/498 dead transitions. [2024-06-28 03:15:24,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 498 transitions, 8950 flow [2024-06-28 03:15:24,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:15:24,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-28 03:15:24,996 INFO L175 Difference]: Start difference. First operand has 293 places, 477 transitions, 7660 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:15:24,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 498 transitions, 8950 flow [2024-06-28 03:15:26,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 498 transitions, 8793 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:26,909 INFO L231 Difference]: Finished difference. Result has 296 places, 482 transitions, 7805 flow [2024-06-28 03:15:26,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7506, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7805, PETRI_PLACES=296, PETRI_TRANSITIONS=482} [2024-06-28 03:15:26,909 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-28 03:15:26,910 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 482 transitions, 7805 flow [2024-06-28 03:15:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:26,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:26,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:26,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:15:26,910 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:26,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:26,910 INFO L85 PathProgramCache]: Analyzing trace with hash 150929478, now seen corresponding path program 5 times [2024-06-28 03:15:26,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:26,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151368808] [2024-06-28 03:15:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:27,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:27,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151368808] [2024-06-28 03:15:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151368808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085689070] [2024-06-28 03:15:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:27,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:27,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:27,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:27,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:27,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:27,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 482 transitions, 7805 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:27,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:27,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:27,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:29,164 INFO L124 PetriNetUnfolderBase]: 4827/7710 cut-off events. [2024-06-28 03:15:29,165 INFO L125 PetriNetUnfolderBase]: For 701002/701008 co-relation queries the response was YES. [2024-06-28 03:15:29,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74484 conditions, 7710 events. 4827/7710 cut-off events. For 701002/701008 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 49214 event pairs, 1076 based on Foata normal form. 8/7717 useless extension candidates. Maximal degree in co-relation 74346. Up to 7457 conditions per place. [2024-06-28 03:15:29,271 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 445 selfloop transitions, 45 changer transitions 0/494 dead transitions. [2024-06-28 03:15:29,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 494 transitions, 8977 flow [2024-06-28 03:15:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 03:15:29,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41114982578397213 [2024-06-28 03:15:29,272 INFO L175 Difference]: Start difference. First operand has 296 places, 482 transitions, 7805 flow. Second operand 7 states and 118 transitions. [2024-06-28 03:15:29,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 494 transitions, 8977 flow [2024-06-28 03:15:31,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 494 transitions, 8800 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:31,339 INFO L231 Difference]: Finished difference. Result has 299 places, 482 transitions, 7726 flow [2024-06-28 03:15:31,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7628, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7726, PETRI_PLACES=299, PETRI_TRANSITIONS=482} [2024-06-28 03:15:31,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-28 03:15:31,339 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 482 transitions, 7726 flow [2024-06-28 03:15:31,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:31,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:31,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:31,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:15:31,340 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:31,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:31,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1006468672, now seen corresponding path program 6 times [2024-06-28 03:15:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464002671] [2024-06-28 03:15:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:31,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:31,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464002671] [2024-06-28 03:15:31,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464002671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:31,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:31,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364903365] [2024-06-28 03:15:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:31,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:32,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:32,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 482 transitions, 7726 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:32,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:32,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:32,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:33,658 INFO L124 PetriNetUnfolderBase]: 4837/7724 cut-off events. [2024-06-28 03:15:33,659 INFO L125 PetriNetUnfolderBase]: For 714812/714818 co-relation queries the response was YES. [2024-06-28 03:15:33,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74598 conditions, 7724 events. 4837/7724 cut-off events. For 714812/714818 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 49300 event pairs, 1076 based on Foata normal form. 8/7731 useless extension candidates. Maximal degree in co-relation 74459. Up to 7493 conditions per place. [2024-06-28 03:15:33,758 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 458 selfloop transitions, 35 changer transitions 0/497 dead transitions. [2024-06-28 03:15:33,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 497 transitions, 8862 flow [2024-06-28 03:15:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 03:15:33,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-28 03:15:33,759 INFO L175 Difference]: Start difference. First operand has 299 places, 482 transitions, 7726 flow. Second operand 8 states and 126 transitions. [2024-06-28 03:15:33,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 497 transitions, 8862 flow [2024-06-28 03:15:35,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 497 transitions, 8571 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:15:35,462 INFO L231 Difference]: Finished difference. Result has 299 places, 487 transitions, 7639 flow [2024-06-28 03:15:35,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7448, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7639, PETRI_PLACES=299, PETRI_TRANSITIONS=487} [2024-06-28 03:15:35,462 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-28 03:15:35,463 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 487 transitions, 7639 flow [2024-06-28 03:15:35,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:35,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:35,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:35,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:15:35,463 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:35,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:35,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1019363618, now seen corresponding path program 2 times [2024-06-28 03:15:35,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635354696] [2024-06-28 03:15:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:36,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:36,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635354696] [2024-06-28 03:15:36,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635354696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:36,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:36,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:36,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171694280] [2024-06-28 03:15:36,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:36,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:36,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:36,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 487 transitions, 7639 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:36,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:36,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:36,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:38,230 INFO L124 PetriNetUnfolderBase]: 4889/7797 cut-off events. [2024-06-28 03:15:38,230 INFO L125 PetriNetUnfolderBase]: For 746046/746046 co-relation queries the response was YES. [2024-06-28 03:15:38,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75448 conditions, 7797 events. 4889/7797 cut-off events. For 746046/746046 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 49655 event pairs, 962 based on Foata normal form. 4/7800 useless extension candidates. Maximal degree in co-relation 75309. Up to 7379 conditions per place. [2024-06-28 03:15:38,320 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 427 selfloop transitions, 80 changer transitions 0/511 dead transitions. [2024-06-28 03:15:38,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 511 transitions, 9153 flow [2024-06-28 03:15:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:15:38,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:15:38,321 INFO L175 Difference]: Start difference. First operand has 299 places, 487 transitions, 7639 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:15:38,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 511 transitions, 9153 flow [2024-06-28 03:15:40,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 511 transitions, 9059 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:40,077 INFO L231 Difference]: Finished difference. Result has 303 places, 493 transitions, 7827 flow [2024-06-28 03:15:40,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7545, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7827, PETRI_PLACES=303, PETRI_TRANSITIONS=493} [2024-06-28 03:15:40,078 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-06-28 03:15:40,078 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 493 transitions, 7827 flow [2024-06-28 03:15:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:40,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:40,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:40,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:15:40,078 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:40,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:40,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1885588868, now seen corresponding path program 3 times [2024-06-28 03:15:40,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:40,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638599467] [2024-06-28 03:15:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:40,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:40,826 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 03:15:40,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:40,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638599467] [2024-06-28 03:15:40,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638599467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:40,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:40,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:40,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515034989] [2024-06-28 03:15:40,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:40,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:40,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:40,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:40,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:40,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 493 transitions, 7827 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:40,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:40,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:40,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:42,692 INFO L124 PetriNetUnfolderBase]: 4877/7783 cut-off events. [2024-06-28 03:15:42,693 INFO L125 PetriNetUnfolderBase]: For 749398/749398 co-relation queries the response was YES. [2024-06-28 03:15:42,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75382 conditions, 7783 events. 4877/7783 cut-off events. For 749398/749398 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49613 event pairs, 954 based on Foata normal form. 4/7786 useless extension candidates. Maximal degree in co-relation 75242. Up to 7371 conditions per place. [2024-06-28 03:15:42,795 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 436 selfloop transitions, 71 changer transitions 0/511 dead transitions. [2024-06-28 03:15:42,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 511 transitions, 9085 flow [2024-06-28 03:15:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:15:42,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:15:42,796 INFO L175 Difference]: Start difference. First operand has 303 places, 493 transitions, 7827 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:15:42,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 511 transitions, 9085 flow [2024-06-28 03:15:44,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 511 transitions, 8881 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:44,467 INFO L231 Difference]: Finished difference. Result has 307 places, 493 transitions, 7771 flow [2024-06-28 03:15:44,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7623, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7771, PETRI_PLACES=307, PETRI_TRANSITIONS=493} [2024-06-28 03:15:44,468 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-28 03:15:44,468 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 493 transitions, 7771 flow [2024-06-28 03:15:44,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:44,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:44,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:44,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:15:44,469 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:44,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:44,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1019809088, now seen corresponding path program 4 times [2024-06-28 03:15:44,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:44,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605760676] [2024-06-28 03:15:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:44,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:45,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605760676] [2024-06-28 03:15:45,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605760676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:45,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:45,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:45,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383747755] [2024-06-28 03:15:45,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:45,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:45,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:45,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:45,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:45,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:45,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 493 transitions, 7771 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:45,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:45,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:45,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:47,124 INFO L124 PetriNetUnfolderBase]: 4865/7764 cut-off events. [2024-06-28 03:15:47,124 INFO L125 PetriNetUnfolderBase]: For 750874/750874 co-relation queries the response was YES. [2024-06-28 03:15:47,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74969 conditions, 7764 events. 4865/7764 cut-off events. For 750874/750874 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 49631 event pairs, 1203 based on Foata normal form. 4/7767 useless extension candidates. Maximal degree in co-relation 74828. Up to 7548 conditions per place. [2024-06-28 03:15:47,231 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 481 selfloop transitions, 20 changer transitions 0/505 dead transitions. [2024-06-28 03:15:47,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 505 transitions, 8817 flow [2024-06-28 03:15:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 03:15:47,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 03:15:47,233 INFO L175 Difference]: Start difference. First operand has 307 places, 493 transitions, 7771 flow. Second operand 8 states and 128 transitions. [2024-06-28 03:15:47,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 505 transitions, 8817 flow [2024-06-28 03:15:49,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 505 transitions, 8567 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:15:49,214 INFO L231 Difference]: Finished difference. Result has 307 places, 493 transitions, 7568 flow [2024-06-28 03:15:49,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7521, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7568, PETRI_PLACES=307, PETRI_TRANSITIONS=493} [2024-06-28 03:15:49,215 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-28 03:15:49,215 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 493 transitions, 7568 flow [2024-06-28 03:15:49,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:49,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:49,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:49,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:15:49,215 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:49,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash -532241274, now seen corresponding path program 7 times [2024-06-28 03:15:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:49,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643990360] [2024-06-28 03:15:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:49,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:49,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:49,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643990360] [2024-06-28 03:15:49,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643990360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:49,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:49,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:15:49,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031781731] [2024-06-28 03:15:49,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:49,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:15:49,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:49,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:15:49,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:15:49,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:15:49,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 493 transitions, 7568 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:49,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:49,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:15:49,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:51,424 INFO L124 PetriNetUnfolderBase]: 4815/7675 cut-off events. [2024-06-28 03:15:51,424 INFO L125 PetriNetUnfolderBase]: For 747058/747060 co-relation queries the response was YES. [2024-06-28 03:15:51,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73742 conditions, 7675 events. 4815/7675 cut-off events. For 747058/747060 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 48872 event pairs, 1055 based on Foata normal form. 4/7678 useless extension candidates. Maximal degree in co-relation 73600. Up to 7440 conditions per place. [2024-06-28 03:15:51,528 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 473 selfloop transitions, 41 changer transitions 0/518 dead transitions. [2024-06-28 03:15:51,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 518 transitions, 8743 flow [2024-06-28 03:15:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:51,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:15:51,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-28 03:15:51,529 INFO L175 Difference]: Start difference. First operand has 307 places, 493 transitions, 7568 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:15:51,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 518 transitions, 8743 flow [2024-06-28 03:15:52,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 518 transitions, 8594 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 03:15:52,865 INFO L231 Difference]: Finished difference. Result has 306 places, 499 transitions, 7618 flow [2024-06-28 03:15:52,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7420, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7618, PETRI_PLACES=306, PETRI_TRANSITIONS=499} [2024-06-28 03:15:52,866 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 03:15:52,866 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 499 transitions, 7618 flow [2024-06-28 03:15:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:52,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:52,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:52,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:15:52,866 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:52,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1596620836, now seen corresponding path program 1 times [2024-06-28 03:15:52,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:52,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748020792] [2024-06-28 03:15:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:52,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748020792] [2024-06-28 03:15:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748020792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:53,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:53,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:53,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236307897] [2024-06-28 03:15:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:53,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:53,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:53,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:53,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:53,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:15:53,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 499 transitions, 7618 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:53,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:53,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:15:53,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:55,509 INFO L124 PetriNetUnfolderBase]: 4632/7475 cut-off events. [2024-06-28 03:15:55,509 INFO L125 PetriNetUnfolderBase]: For 667446/667454 co-relation queries the response was YES. [2024-06-28 03:15:55,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70474 conditions, 7475 events. 4632/7475 cut-off events. For 667446/667454 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 48449 event pairs, 1127 based on Foata normal form. 1/7460 useless extension candidates. Maximal degree in co-relation 70332. Up to 7159 conditions per place. [2024-06-28 03:15:55,606 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 482 selfloop transitions, 27 changer transitions 0/518 dead transitions. [2024-06-28 03:15:55,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 518 transitions, 8798 flow [2024-06-28 03:15:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:15:55,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 03:15:55,607 INFO L175 Difference]: Start difference. First operand has 306 places, 499 transitions, 7618 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:15:55,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 518 transitions, 8798 flow [2024-06-28 03:15:57,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 518 transitions, 8577 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:15:57,663 INFO L231 Difference]: Finished difference. Result has 305 places, 502 transitions, 7574 flow [2024-06-28 03:15:57,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7397, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7574, PETRI_PLACES=305, PETRI_TRANSITIONS=502} [2024-06-28 03:15:57,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-28 03:15:57,663 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 502 transitions, 7574 flow [2024-06-28 03:15:57,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:57,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:57,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:57,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:15:57,664 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:57,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:57,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1600430271, now seen corresponding path program 1 times [2024-06-28 03:15:57,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:57,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868937853] [2024-06-28 03:15:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:58,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:58,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868937853] [2024-06-28 03:15:58,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868937853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:58,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:58,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:58,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943536167] [2024-06-28 03:15:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:58,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:58,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:58,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:15:58,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 502 transitions, 7574 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:58,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:58,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:15:58,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:59,938 INFO L124 PetriNetUnfolderBase]: 4642/7487 cut-off events. [2024-06-28 03:15:59,938 INFO L125 PetriNetUnfolderBase]: For 683998/684002 co-relation queries the response was YES. [2024-06-28 03:16:00,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71086 conditions, 7487 events. 4642/7487 cut-off events. For 683998/684002 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 48570 event pairs, 1125 based on Foata normal form. 2/7477 useless extension candidates. Maximal degree in co-relation 70944. Up to 7136 conditions per place. [2024-06-28 03:16:00,041 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 476 selfloop transitions, 39 changer transitions 0/524 dead transitions. [2024-06-28 03:16:00,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 524 transitions, 8872 flow [2024-06-28 03:16:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:16:00,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 03:16:00,043 INFO L175 Difference]: Start difference. First operand has 305 places, 502 transitions, 7574 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:16:00,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 524 transitions, 8872 flow [2024-06-28 03:16:02,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 524 transitions, 8719 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:02,158 INFO L231 Difference]: Finished difference. Result has 306 places, 505 transitions, 7547 flow [2024-06-28 03:16:02,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7421, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7547, PETRI_PLACES=306, PETRI_TRANSITIONS=505} [2024-06-28 03:16:02,158 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 03:16:02,158 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 505 transitions, 7547 flow [2024-06-28 03:16:02,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:02,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:02,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:02,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:16:02,159 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:02,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:02,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1600435851, now seen corresponding path program 2 times [2024-06-28 03:16:02,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:02,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472812503] [2024-06-28 03:16:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:02,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:02,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:02,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472812503] [2024-06-28 03:16:02,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472812503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:02,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:02,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643721037] [2024-06-28 03:16:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:02,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:02,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:03,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:16:03,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 505 transitions, 7547 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:03,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:03,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:16:03,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:04,613 INFO L124 PetriNetUnfolderBase]: 4684/7550 cut-off events. [2024-06-28 03:16:04,613 INFO L125 PetriNetUnfolderBase]: For 701858/701862 co-relation queries the response was YES. [2024-06-28 03:16:04,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71728 conditions, 7550 events. 4684/7550 cut-off events. For 701858/701862 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 48863 event pairs, 1129 based on Foata normal form. 2/7540 useless extension candidates. Maximal degree in co-relation 71585. Up to 7184 conditions per place. [2024-06-28 03:16:04,721 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 477 selfloop transitions, 39 changer transitions 0/525 dead transitions. [2024-06-28 03:16:04,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 525 transitions, 8845 flow [2024-06-28 03:16:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:16:04,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:16:04,722 INFO L175 Difference]: Start difference. First operand has 306 places, 505 transitions, 7547 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:16:04,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 525 transitions, 8845 flow [2024-06-28 03:16:07,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 525 transitions, 8726 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:07,066 INFO L231 Difference]: Finished difference. Result has 309 places, 508 transitions, 7560 flow [2024-06-28 03:16:07,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7434, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7560, PETRI_PLACES=309, PETRI_TRANSITIONS=508} [2024-06-28 03:16:07,066 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-28 03:16:07,066 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 508 transitions, 7560 flow [2024-06-28 03:16:07,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:07,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:07,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:07,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:16:07,067 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:07,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash 483410709, now seen corresponding path program 3 times [2024-06-28 03:16:07,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:07,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155718952] [2024-06-28 03:16:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:07,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:07,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:07,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155718952] [2024-06-28 03:16:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155718952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:07,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:07,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:07,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978759052] [2024-06-28 03:16:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:07,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:07,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:16:07,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 508 transitions, 7560 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:07,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:07,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:16:07,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:09,543 INFO L124 PetriNetUnfolderBase]: 4662/7517 cut-off events. [2024-06-28 03:16:09,544 INFO L125 PetriNetUnfolderBase]: For 713338/713342 co-relation queries the response was YES. [2024-06-28 03:16:09,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71523 conditions, 7517 events. 4662/7517 cut-off events. For 713338/713342 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 48796 event pairs, 1124 based on Foata normal form. 2/7507 useless extension candidates. Maximal degree in co-relation 71379. Up to 7222 conditions per place. [2024-06-28 03:16:09,651 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 490 selfloop transitions, 25 changer transitions 0/524 dead transitions. [2024-06-28 03:16:09,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 524 transitions, 8678 flow [2024-06-28 03:16:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:16:09,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-28 03:16:09,653 INFO L175 Difference]: Start difference. First operand has 309 places, 508 transitions, 7560 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:16:09,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 524 transitions, 8678 flow [2024-06-28 03:16:11,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 524 transitions, 8592 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:11,778 INFO L231 Difference]: Finished difference. Result has 312 places, 511 transitions, 7584 flow [2024-06-28 03:16:11,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7477, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7584, PETRI_PLACES=312, PETRI_TRANSITIONS=511} [2024-06-28 03:16:11,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2024-06-28 03:16:11,779 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 511 transitions, 7584 flow [2024-06-28 03:16:11,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:11,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:11,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:11,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:16:11,780 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:11,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1019547913, now seen corresponding path program 4 times [2024-06-28 03:16:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428934520] [2024-06-28 03:16:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:12,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:12,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428934520] [2024-06-28 03:16:12,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428934520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:12,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:12,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735485366] [2024-06-28 03:16:12,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:12,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:12,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:12,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:16:12,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 511 transitions, 7584 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:12,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:12,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:16:12,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:14,221 INFO L124 PetriNetUnfolderBase]: 4664/7519 cut-off events. [2024-06-28 03:16:14,221 INFO L125 PetriNetUnfolderBase]: For 719283/719287 co-relation queries the response was YES. [2024-06-28 03:16:14,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71436 conditions, 7519 events. 4664/7519 cut-off events. For 719283/719287 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 48728 event pairs, 1125 based on Foata normal form. 3/7508 useless extension candidates. Maximal degree in co-relation 71291. Up to 7229 conditions per place. [2024-06-28 03:16:14,322 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 494 selfloop transitions, 20 changer transitions 0/523 dead transitions. [2024-06-28 03:16:14,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 523 transitions, 8648 flow [2024-06-28 03:16:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:16:14,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40853658536585363 [2024-06-28 03:16:14,324 INFO L175 Difference]: Start difference. First operand has 312 places, 511 transitions, 7584 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:16:14,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 523 transitions, 8648 flow [2024-06-28 03:16:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 523 transitions, 8550 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:16,493 INFO L231 Difference]: Finished difference. Result has 314 places, 511 transitions, 7532 flow [2024-06-28 03:16:16,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7486, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7532, PETRI_PLACES=314, PETRI_TRANSITIONS=511} [2024-06-28 03:16:16,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-28 03:16:16,493 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 511 transitions, 7532 flow [2024-06-28 03:16:16,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:16,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:16,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:16:16,494 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:16,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1490792924, now seen corresponding path program 1 times [2024-06-28 03:16:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:16,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437512285] [2024-06-28 03:16:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:17,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437512285] [2024-06-28 03:16:17,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437512285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:17,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452882089] [2024-06-28 03:16:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:17,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:17,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:17,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:16:17,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 511 transitions, 7532 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:17,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:17,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:16:17,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:19,607 INFO L124 PetriNetUnfolderBase]: 4843/7713 cut-off events. [2024-06-28 03:16:19,608 INFO L125 PetriNetUnfolderBase]: For 817844/817844 co-relation queries the response was YES. [2024-06-28 03:16:19,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74634 conditions, 7713 events. 4843/7713 cut-off events. For 817844/817844 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49024 event pairs, 1198 based on Foata normal form. 2/7714 useless extension candidates. Maximal degree in co-relation 74488. Up to 7511 conditions per place. [2024-06-28 03:16:19,709 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 501 selfloop transitions, 19 changer transitions 0/524 dead transitions. [2024-06-28 03:16:19,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 524 transitions, 8638 flow [2024-06-28 03:16:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 03:16:19,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-28 03:16:19,711 INFO L175 Difference]: Start difference. First operand has 314 places, 511 transitions, 7532 flow. Second operand 8 states and 126 transitions. [2024-06-28 03:16:19,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 524 transitions, 8638 flow [2024-06-28 03:16:22,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 524 transitions, 8545 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:16:22,014 INFO L231 Difference]: Finished difference. Result has 314 places, 513 transitions, 7522 flow [2024-06-28 03:16:22,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7439, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7522, PETRI_PLACES=314, PETRI_TRANSITIONS=513} [2024-06-28 03:16:22,014 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-28 03:16:22,015 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 513 transitions, 7522 flow [2024-06-28 03:16:22,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:22,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:22,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:22,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:16:22,015 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:22,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:22,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1977518144, now seen corresponding path program 1 times [2024-06-28 03:16:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:22,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38016293] [2024-06-28 03:16:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:22,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:22,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38016293] [2024-06-28 03:16:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38016293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:22,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:22,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:22,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722542683] [2024-06-28 03:16:22,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:22,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:22,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:23,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:16:23,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 513 transitions, 7522 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:23,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:23,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:16:23,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:24,838 INFO L124 PetriNetUnfolderBase]: 4855/7735 cut-off events. [2024-06-28 03:16:24,838 INFO L125 PetriNetUnfolderBase]: For 846123/846125 co-relation queries the response was YES. [2024-06-28 03:16:24,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74566 conditions, 7735 events. 4855/7735 cut-off events. For 846123/846125 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 49225 event pairs, 1027 based on Foata normal form. 14/7748 useless extension candidates. Maximal degree in co-relation 74419. Up to 7261 conditions per place. [2024-06-28 03:16:24,934 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 423 selfloop transitions, 128 changer transitions 0/555 dead transitions. [2024-06-28 03:16:24,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 555 transitions, 9222 flow [2024-06-28 03:16:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:16:24,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:16:24,935 INFO L175 Difference]: Start difference. First operand has 314 places, 513 transitions, 7522 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:16:24,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 555 transitions, 9222 flow [2024-06-28 03:16:27,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 555 transitions, 9155 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:27,454 INFO L231 Difference]: Finished difference. Result has 316 places, 531 transitions, 8104 flow [2024-06-28 03:16:27,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7455, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8104, PETRI_PLACES=316, PETRI_TRANSITIONS=531} [2024-06-28 03:16:27,455 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-28 03:16:27,455 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 531 transitions, 8104 flow [2024-06-28 03:16:27,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:27,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:27,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:27,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:16:27,455 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:27,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash -815356142, now seen corresponding path program 2 times [2024-06-28 03:16:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516521121] [2024-06-28 03:16:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:28,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516521121] [2024-06-28 03:16:28,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516521121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:28,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:28,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:28,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572003439] [2024-06-28 03:16:28,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:28,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:28,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:28,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:16:28,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 531 transitions, 8104 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:28,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:28,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:16:28,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:30,253 INFO L124 PetriNetUnfolderBase]: 4834/7699 cut-off events. [2024-06-28 03:16:30,254 INFO L125 PetriNetUnfolderBase]: For 823955/823957 co-relation queries the response was YES. [2024-06-28 03:16:30,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74265 conditions, 7699 events. 4834/7699 cut-off events. For 823955/823957 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 48928 event pairs, 1044 based on Foata normal form. 8/7706 useless extension candidates. Maximal degree in co-relation 74117. Up to 7380 conditions per place. [2024-06-28 03:16:30,349 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 476 selfloop transitions, 89 changer transitions 0/569 dead transitions. [2024-06-28 03:16:30,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 569 transitions, 9644 flow [2024-06-28 03:16:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:16:30,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:16:30,350 INFO L175 Difference]: Start difference. First operand has 316 places, 531 transitions, 8104 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:16:30,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 569 transitions, 9644 flow [2024-06-28 03:16:32,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 569 transitions, 9292 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:33,005 INFO L231 Difference]: Finished difference. Result has 319 places, 549 transitions, 8320 flow [2024-06-28 03:16:33,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7773, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8320, PETRI_PLACES=319, PETRI_TRANSITIONS=549} [2024-06-28 03:16:33,006 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-28 03:16:33,006 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 549 transitions, 8320 flow [2024-06-28 03:16:33,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:33,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:33,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:33,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:16:33,007 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:33,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash -941698658, now seen corresponding path program 1 times [2024-06-28 03:16:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036177211] [2024-06-28 03:16:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036177211] [2024-06-28 03:16:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036177211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:33,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:33,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271571429] [2024-06-28 03:16:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:33,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:33,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:33,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:16:33,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 549 transitions, 8320 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:33,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:33,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:16:33,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:35,433 INFO L124 PetriNetUnfolderBase]: 4886/7771 cut-off events. [2024-06-28 03:16:35,433 INFO L125 PetriNetUnfolderBase]: For 847203/847205 co-relation queries the response was YES. [2024-06-28 03:16:35,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75128 conditions, 7771 events. 4886/7771 cut-off events. For 847203/847205 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 49350 event pairs, 1054 based on Foata normal form. 6/7776 useless extension candidates. Maximal degree in co-relation 74979. Up to 7336 conditions per place. [2024-06-28 03:16:35,555 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 521 selfloop transitions, 61 changer transitions 0/586 dead transitions. [2024-06-28 03:16:35,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 586 transitions, 10001 flow [2024-06-28 03:16:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:16:35,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:16:35,557 INFO L175 Difference]: Start difference. First operand has 319 places, 549 transitions, 8320 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:16:35,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 586 transitions, 10001 flow [2024-06-28 03:16:37,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 586 transitions, 9816 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:38,002 INFO L231 Difference]: Finished difference. Result has 324 places, 563 transitions, 8526 flow [2024-06-28 03:16:38,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8135, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8526, PETRI_PLACES=324, PETRI_TRANSITIONS=563} [2024-06-28 03:16:38,003 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-28 03:16:38,003 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 563 transitions, 8526 flow [2024-06-28 03:16:38,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:38,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:38,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:16:38,003 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:38,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash -528468812, now seen corresponding path program 3 times [2024-06-28 03:16:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663285928] [2024-06-28 03:16:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:39,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:39,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663285928] [2024-06-28 03:16:39,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663285928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:39,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:39,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:39,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496808835] [2024-06-28 03:16:39,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:39,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:39,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:39,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:16:39,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 563 transitions, 8526 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:39,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:39,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:16:39,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:40,941 INFO L124 PetriNetUnfolderBase]: 4847/7702 cut-off events. [2024-06-28 03:16:40,941 INFO L125 PetriNetUnfolderBase]: For 854137/854137 co-relation queries the response was YES. [2024-06-28 03:16:41,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75068 conditions, 7702 events. 4847/7702 cut-off events. For 854137/854137 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 48723 event pairs, 922 based on Foata normal form. 3/7704 useless extension candidates. Maximal degree in co-relation 74917. Up to 7394 conditions per place. [2024-06-28 03:16:41,058 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 499 selfloop transitions, 78 changer transitions 0/581 dead transitions. [2024-06-28 03:16:41,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 581 transitions, 9794 flow [2024-06-28 03:16:41,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:16:41,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-28 03:16:41,059 INFO L175 Difference]: Start difference. First operand has 324 places, 563 transitions, 8526 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:16:41,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 581 transitions, 9794 flow [2024-06-28 03:16:43,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 581 transitions, 9629 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:43,852 INFO L231 Difference]: Finished difference. Result has 329 places, 566 transitions, 8605 flow [2024-06-28 03:16:43,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8361, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8605, PETRI_PLACES=329, PETRI_TRANSITIONS=566} [2024-06-28 03:16:43,853 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-06-28 03:16:43,853 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 566 transitions, 8605 flow [2024-06-28 03:16:43,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:43,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:43,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:43,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:16:43,853 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:43,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:43,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2024490410, now seen corresponding path program 2 times [2024-06-28 03:16:43,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:43,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679429477] [2024-06-28 03:16:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:43,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:44,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679429477] [2024-06-28 03:16:44,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679429477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:44,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:44,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:44,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277758347] [2024-06-28 03:16:44,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:44,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:44,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:44,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:16:44,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 566 transitions, 8605 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:44,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:44,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:16:44,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:46,485 INFO L124 PetriNetUnfolderBase]: 4862/7725 cut-off events. [2024-06-28 03:16:46,485 INFO L125 PetriNetUnfolderBase]: For 866150/866152 co-relation queries the response was YES. [2024-06-28 03:16:46,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75372 conditions, 7725 events. 4862/7725 cut-off events. For 866150/866152 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 48886 event pairs, 1047 based on Foata normal form. 4/7728 useless extension candidates. Maximal degree in co-relation 75219. Up to 7471 conditions per place. [2024-06-28 03:16:46,583 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 539 selfloop transitions, 44 changer transitions 0/587 dead transitions. [2024-06-28 03:16:46,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 587 transitions, 9940 flow [2024-06-28 03:16:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:16:46,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-28 03:16:46,584 INFO L175 Difference]: Start difference. First operand has 329 places, 566 transitions, 8605 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:16:46,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 587 transitions, 9940 flow [2024-06-28 03:16:48,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 587 transitions, 9707 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:48,904 INFO L231 Difference]: Finished difference. Result has 332 places, 573 transitions, 8589 flow [2024-06-28 03:16:48,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8372, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8589, PETRI_PLACES=332, PETRI_TRANSITIONS=573} [2024-06-28 03:16:48,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-28 03:16:48,905 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 573 transitions, 8589 flow [2024-06-28 03:16:48,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:48,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:48,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:48,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:16:48,906 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:48,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1549294404, now seen corresponding path program 3 times [2024-06-28 03:16:48,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:48,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366271886] [2024-06-28 03:16:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:48,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366271886] [2024-06-28 03:16:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366271886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:49,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847136706] [2024-06-28 03:16:49,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:49,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:49,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:49,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:49,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:16:49,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 573 transitions, 8589 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:49,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:49,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:16:49,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:51,659 INFO L124 PetriNetUnfolderBase]: 4888/7769 cut-off events. [2024-06-28 03:16:51,659 INFO L125 PetriNetUnfolderBase]: For 891882/891884 co-relation queries the response was YES. [2024-06-28 03:16:51,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76068 conditions, 7769 events. 4888/7769 cut-off events. For 891882/891884 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 49318 event pairs, 1049 based on Foata normal form. 4/7772 useless extension candidates. Maximal degree in co-relation 75914. Up to 7464 conditions per place. [2024-06-28 03:16:51,757 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 531 selfloop transitions, 63 changer transitions 0/598 dead transitions. [2024-06-28 03:16:51,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 598 transitions, 10203 flow [2024-06-28 03:16:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:16:51,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:16:51,758 INFO L175 Difference]: Start difference. First operand has 332 places, 573 transitions, 8589 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:16:51,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 598 transitions, 10203 flow [2024-06-28 03:16:54,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 598 transitions, 10084 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:54,717 INFO L231 Difference]: Finished difference. Result has 336 places, 579 transitions, 8773 flow [2024-06-28 03:16:54,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8470, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8773, PETRI_PLACES=336, PETRI_TRANSITIONS=579} [2024-06-28 03:16:54,717 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2024-06-28 03:16:54,718 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 579 transitions, 8773 flow [2024-06-28 03:16:54,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:54,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:54,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:54,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:16:54,718 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:54,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:54,718 INFO L85 PathProgramCache]: Analyzing trace with hash -538599488, now seen corresponding path program 1 times [2024-06-28 03:16:54,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:54,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049796486] [2024-06-28 03:16:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:54,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:55,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049796486] [2024-06-28 03:16:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049796486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:55,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:55,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:55,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926179109] [2024-06-28 03:16:55,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:55,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:55,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:55,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:55,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:16:55,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 579 transitions, 8773 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:55,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:55,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:16:55,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:57,741 INFO L124 PetriNetUnfolderBase]: 4896/7777 cut-off events. [2024-06-28 03:16:57,741 INFO L125 PetriNetUnfolderBase]: For 910017/910019 co-relation queries the response was YES. [2024-06-28 03:16:57,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76413 conditions, 7777 events. 4896/7777 cut-off events. For 910017/910019 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 49066 event pairs, 891 based on Foata normal form. 4/7780 useless extension candidates. Maximal degree in co-relation 76258. Up to 7386 conditions per place. [2024-06-28 03:16:57,857 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 527 selfloop transitions, 76 changer transitions 0/607 dead transitions. [2024-06-28 03:16:57,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 607 transitions, 10291 flow [2024-06-28 03:16:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:16:57,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:16:57,858 INFO L175 Difference]: Start difference. First operand has 336 places, 579 transitions, 8773 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:16:57,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 607 transitions, 10291 flow [2024-06-28 03:17:00,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 607 transitions, 10149 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:00,924 INFO L231 Difference]: Finished difference. Result has 340 places, 581 transitions, 8834 flow [2024-06-28 03:17:00,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8631, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8834, PETRI_PLACES=340, PETRI_TRANSITIONS=581} [2024-06-28 03:17:00,924 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 298 predicate places. [2024-06-28 03:17:00,924 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 581 transitions, 8834 flow [2024-06-28 03:17:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:00,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:00,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:00,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:17:00,925 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:00,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash -538302818, now seen corresponding path program 2 times [2024-06-28 03:17:00,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:00,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394380322] [2024-06-28 03:17:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:01,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:01,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394380322] [2024-06-28 03:17:01,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394380322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:01,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:01,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:01,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718885629] [2024-06-28 03:17:01,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:01,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:01,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:01,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:01,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:01,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 581 transitions, 8834 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:01,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:01,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:01,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:03,922 INFO L124 PetriNetUnfolderBase]: 4904/7791 cut-off events. [2024-06-28 03:17:03,922 INFO L125 PetriNetUnfolderBase]: For 924732/924734 co-relation queries the response was YES. [2024-06-28 03:17:03,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76771 conditions, 7791 events. 4904/7791 cut-off events. For 924732/924734 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 49437 event pairs, 1032 based on Foata normal form. 4/7794 useless extension candidates. Maximal degree in co-relation 76614. Up to 7468 conditions per place. [2024-06-28 03:17:04,026 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 527 selfloop transitions, 73 changer transitions 0/604 dead transitions. [2024-06-28 03:17:04,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 604 transitions, 10150 flow [2024-06-28 03:17:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:17:04,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:17:04,028 INFO L175 Difference]: Start difference. First operand has 340 places, 581 transitions, 8834 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:17:04,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 604 transitions, 10150 flow [2024-06-28 03:17:07,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 604 transitions, 9940 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:07,181 INFO L231 Difference]: Finished difference. Result has 341 places, 583 transitions, 8834 flow [2024-06-28 03:17:07,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8630, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8834, PETRI_PLACES=341, PETRI_TRANSITIONS=583} [2024-06-28 03:17:07,182 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2024-06-28 03:17:07,182 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 583 transitions, 8834 flow [2024-06-28 03:17:07,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:07,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:07,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:07,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:17:07,182 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:07,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:07,183 INFO L85 PathProgramCache]: Analyzing trace with hash -528471788, now seen corresponding path program 3 times [2024-06-28 03:17:07,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:07,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90071442] [2024-06-28 03:17:07,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:07,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:08,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90071442] [2024-06-28 03:17:08,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90071442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:08,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:08,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191699050] [2024-06-28 03:17:08,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:08,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:08,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:08,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 583 transitions, 8834 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:08,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:08,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:08,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:10,291 INFO L124 PetriNetUnfolderBase]: 4912/7799 cut-off events. [2024-06-28 03:17:10,291 INFO L125 PetriNetUnfolderBase]: For 942021/942021 co-relation queries the response was YES. [2024-06-28 03:17:10,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76947 conditions, 7799 events. 4912/7799 cut-off events. For 942021/942021 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 49396 event pairs, 921 based on Foata normal form. 2/7800 useless extension candidates. Maximal degree in co-relation 76789. Up to 7486 conditions per place. [2024-06-28 03:17:10,393 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 526 selfloop transitions, 71 changer transitions 0/601 dead transitions. [2024-06-28 03:17:10,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 601 transitions, 10124 flow [2024-06-28 03:17:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:17:10,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-28 03:17:10,394 INFO L175 Difference]: Start difference. First operand has 341 places, 583 transitions, 8834 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:17:10,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 601 transitions, 10124 flow [2024-06-28 03:17:12,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 601 transitions, 9954 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:12,529 INFO L231 Difference]: Finished difference. Result has 343 places, 585 transitions, 8865 flow [2024-06-28 03:17:12,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8664, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8865, PETRI_PLACES=343, PETRI_TRANSITIONS=585} [2024-06-28 03:17:12,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-06-28 03:17:12,529 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 585 transitions, 8865 flow [2024-06-28 03:17:12,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:12,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:12,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:12,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:17:12,530 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:12,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash -539840856, now seen corresponding path program 4 times [2024-06-28 03:17:12,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:12,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863838178] [2024-06-28 03:17:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:12,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863838178] [2024-06-28 03:17:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863838178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:13,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:13,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:13,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584322786] [2024-06-28 03:17:13,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:13,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:13,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:13,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 585 transitions, 8865 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:13,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:13,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:13,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:15,097 INFO L124 PetriNetUnfolderBase]: 4948/7857 cut-off events. [2024-06-28 03:17:15,097 INFO L125 PetriNetUnfolderBase]: For 976986/976990 co-relation queries the response was YES. [2024-06-28 03:17:15,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77817 conditions, 7857 events. 4948/7857 cut-off events. For 976986/976990 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 49916 event pairs, 1048 based on Foata normal form. 8/7864 useless extension candidates. Maximal degree in co-relation 77658. Up to 7120 conditions per place. [2024-06-28 03:17:15,210 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 516 selfloop transitions, 112 changer transitions 0/632 dead transitions. [2024-06-28 03:17:15,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 632 transitions, 10949 flow [2024-06-28 03:17:15,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:15,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:17:15,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:17:15,212 INFO L175 Difference]: Start difference. First operand has 343 places, 585 transitions, 8865 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:17:15,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 632 transitions, 10949 flow [2024-06-28 03:17:19,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 632 transitions, 10776 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:19,377 INFO L231 Difference]: Finished difference. Result has 347 places, 605 transitions, 9254 flow [2024-06-28 03:17:19,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8692, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9254, PETRI_PLACES=347, PETRI_TRANSITIONS=605} [2024-06-28 03:17:19,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 305 predicate places. [2024-06-28 03:17:19,377 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 605 transitions, 9254 flow [2024-06-28 03:17:19,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:19,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:19,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:19,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:17:19,378 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:19,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2024363176, now seen corresponding path program 5 times [2024-06-28 03:17:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093179092] [2024-06-28 03:17:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:20,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093179092] [2024-06-28 03:17:20,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093179092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:20,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:20,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255132492] [2024-06-28 03:17:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:20,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:20,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:20,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 605 transitions, 9254 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:20,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:20,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:20,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:22,055 INFO L124 PetriNetUnfolderBase]: 5000/7933 cut-off events. [2024-06-28 03:17:22,055 INFO L125 PetriNetUnfolderBase]: For 1025513/1025517 co-relation queries the response was YES. [2024-06-28 03:17:22,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80119 conditions, 7933 events. 5000/7933 cut-off events. For 1025513/1025517 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 50377 event pairs, 1051 based on Foata normal form. 8/7940 useless extension candidates. Maximal degree in co-relation 79958. Up to 7160 conditions per place. [2024-06-28 03:17:22,172 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 512 selfloop transitions, 124 changer transitions 0/640 dead transitions. [2024-06-28 03:17:22,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 640 transitions, 11337 flow [2024-06-28 03:17:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:17:22,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:17:22,173 INFO L175 Difference]: Start difference. First operand has 347 places, 605 transitions, 9254 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:17:22,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 640 transitions, 11337 flow [2024-06-28 03:17:26,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 640 transitions, 11092 flow, removed 97 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:26,082 INFO L231 Difference]: Finished difference. Result has 353 places, 615 transitions, 9570 flow [2024-06-28 03:17:26,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9067, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9570, PETRI_PLACES=353, PETRI_TRANSITIONS=615} [2024-06-28 03:17:26,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-28 03:17:26,083 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 615 transitions, 9570 flow [2024-06-28 03:17:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:26,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:26,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:26,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:17:26,083 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:26,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1926102360, now seen corresponding path program 6 times [2024-06-28 03:17:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531337815] [2024-06-28 03:17:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:26,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531337815] [2024-06-28 03:17:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531337815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:26,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991594568] [2024-06-28 03:17:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:26,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:26,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:26,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 615 transitions, 9570 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:26,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:26,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:26,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:28,629 INFO L124 PetriNetUnfolderBase]: 4988/7917 cut-off events. [2024-06-28 03:17:28,629 INFO L125 PetriNetUnfolderBase]: For 1018383/1018387 co-relation queries the response was YES. [2024-06-28 03:17:28,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79590 conditions, 7917 events. 4988/7917 cut-off events. For 1018383/1018387 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 50320 event pairs, 1051 based on Foata normal form. 8/7924 useless extension candidates. Maximal degree in co-relation 79425. Up to 7152 conditions per place. [2024-06-28 03:17:28,747 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 505 selfloop transitions, 128 changer transitions 0/637 dead transitions. [2024-06-28 03:17:28,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 637 transitions, 11190 flow [2024-06-28 03:17:28,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:17:28,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:17:28,748 INFO L175 Difference]: Start difference. First operand has 353 places, 615 transitions, 9570 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:17:28,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 637 transitions, 11190 flow [2024-06-28 03:17:32,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 637 transitions, 10938 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:32,481 INFO L231 Difference]: Finished difference. Result has 358 places, 615 transitions, 9581 flow [2024-06-28 03:17:32,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9318, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9581, PETRI_PLACES=358, PETRI_TRANSITIONS=615} [2024-06-28 03:17:32,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-28 03:17:32,482 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 615 transitions, 9581 flow [2024-06-28 03:17:32,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:32,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:32,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:32,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:17:32,482 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:32,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash 206716904, now seen corresponding path program 7 times [2024-06-28 03:17:32,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:32,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498491028] [2024-06-28 03:17:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:33,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:33,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498491028] [2024-06-28 03:17:33,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498491028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:33,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:33,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:33,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098787740] [2024-06-28 03:17:33,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:33,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:33,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:33,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 615 transitions, 9581 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:33,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:33,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:33,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:35,206 INFO L124 PetriNetUnfolderBase]: 4998/7933 cut-off events. [2024-06-28 03:17:35,207 INFO L125 PetriNetUnfolderBase]: For 1026129/1026133 co-relation queries the response was YES. [2024-06-28 03:17:35,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79835 conditions, 7933 events. 4998/7933 cut-off events. For 1026129/1026133 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 50434 event pairs, 1046 based on Foata normal form. 6/7938 useless extension candidates. Maximal degree in co-relation 79669. Up to 7644 conditions per place. [2024-06-28 03:17:35,317 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 582 selfloop transitions, 49 changer transitions 0/635 dead transitions. [2024-06-28 03:17:35,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 635 transitions, 11313 flow [2024-06-28 03:17:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:17:35,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-28 03:17:35,318 INFO L175 Difference]: Start difference. First operand has 358 places, 615 transitions, 9581 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:17:35,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 635 transitions, 11313 flow [2024-06-28 03:17:38,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 635 transitions, 11056 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:38,613 INFO L231 Difference]: Finished difference. Result has 360 places, 621 transitions, 9643 flow [2024-06-28 03:17:38,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9332, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9643, PETRI_PLACES=360, PETRI_TRANSITIONS=621} [2024-06-28 03:17:38,614 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 318 predicate places. [2024-06-28 03:17:38,614 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 621 transitions, 9643 flow [2024-06-28 03:17:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:38,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:38,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:38,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:17:38,614 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:38,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash 615896244, now seen corresponding path program 4 times [2024-06-28 03:17:38,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:38,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253037963] [2024-06-28 03:17:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:38,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:39,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:39,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253037963] [2024-06-28 03:17:39,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253037963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:39,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:39,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:39,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565459993] [2024-06-28 03:17:39,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:39,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:39,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:39,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:39,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 621 transitions, 9643 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:39,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:39,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:39,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:41,465 INFO L124 PetriNetUnfolderBase]: 4971/7888 cut-off events. [2024-06-28 03:17:41,465 INFO L125 PetriNetUnfolderBase]: For 1031220/1031220 co-relation queries the response was YES. [2024-06-28 03:17:41,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79138 conditions, 7888 events. 4971/7888 cut-off events. For 1031220/1031220 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 50026 event pairs, 924 based on Foata normal form. 1/7888 useless extension candidates. Maximal degree in co-relation 78971. Up to 7567 conditions per place. [2024-06-28 03:17:41,575 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 558 selfloop transitions, 69 changer transitions 0/631 dead transitions. [2024-06-28 03:17:41,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 631 transitions, 10925 flow [2024-06-28 03:17:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:17:41,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 03:17:41,576 INFO L175 Difference]: Start difference. First operand has 360 places, 621 transitions, 9643 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:17:41,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 631 transitions, 10925 flow [2024-06-28 03:17:44,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 631 transitions, 10757 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:44,758 INFO L231 Difference]: Finished difference. Result has 364 places, 621 transitions, 9619 flow [2024-06-28 03:17:44,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9475, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9619, PETRI_PLACES=364, PETRI_TRANSITIONS=621} [2024-06-28 03:17:44,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-06-28 03:17:44,759 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 621 transitions, 9619 flow [2024-06-28 03:17:44,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:44,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:44,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:44,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:17:44,760 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:44,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:44,760 INFO L85 PathProgramCache]: Analyzing trace with hash 662041478, now seen corresponding path program 8 times [2024-06-28 03:17:44,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:44,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367590255] [2024-06-28 03:17:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:44,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:45,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:45,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367590255] [2024-06-28 03:17:45,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367590255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:45,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551214800] [2024-06-28 03:17:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:45,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:45,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:45,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 621 transitions, 9619 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:45,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:45,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:45,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:47,443 INFO L124 PetriNetUnfolderBase]: 4981/7905 cut-off events. [2024-06-28 03:17:47,444 INFO L125 PetriNetUnfolderBase]: For 1052446/1052450 co-relation queries the response was YES. [2024-06-28 03:17:47,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79454 conditions, 7905 events. 4981/7905 cut-off events. For 1052446/1052450 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 50204 event pairs, 1043 based on Foata normal form. 6/7910 useless extension candidates. Maximal degree in co-relation 79285. Up to 7631 conditions per place. [2024-06-28 03:17:47,577 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 589 selfloop transitions, 43 changer transitions 0/636 dead transitions. [2024-06-28 03:17:47,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 636 transitions, 11027 flow [2024-06-28 03:17:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:17:47,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 03:17:47,580 INFO L175 Difference]: Start difference. First operand has 364 places, 621 transitions, 9619 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:17:47,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 636 transitions, 11027 flow [2024-06-28 03:17:51,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 636 transitions, 10754 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:51,746 INFO L231 Difference]: Finished difference. Result has 364 places, 625 transitions, 9546 flow [2024-06-28 03:17:51,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9346, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9546, PETRI_PLACES=364, PETRI_TRANSITIONS=625} [2024-06-28 03:17:51,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-06-28 03:17:51,747 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 625 transitions, 9546 flow [2024-06-28 03:17:51,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:51,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:51,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:51,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:17:51,748 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:51,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1541208042, now seen corresponding path program 9 times [2024-06-28 03:17:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705227373] [2024-06-28 03:17:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:52,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:52,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705227373] [2024-06-28 03:17:52,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705227373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:52,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:52,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:52,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444639167] [2024-06-28 03:17:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:52,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:52,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:52,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:52,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:52,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:52,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 625 transitions, 9546 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:52,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:52,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:52,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:54,376 INFO L124 PetriNetUnfolderBase]: 4991/7921 cut-off events. [2024-06-28 03:17:54,376 INFO L125 PetriNetUnfolderBase]: For 1070975/1070979 co-relation queries the response was YES. [2024-06-28 03:17:54,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79640 conditions, 7921 events. 4991/7921 cut-off events. For 1070975/1070979 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 50333 event pairs, 1043 based on Foata normal form. 6/7926 useless extension candidates. Maximal degree in co-relation 79470. Up to 7612 conditions per place. [2024-06-28 03:17:54,499 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 579 selfloop transitions, 60 changer transitions 0/643 dead transitions. [2024-06-28 03:17:54,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 643 transitions, 11184 flow [2024-06-28 03:17:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:17:54,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 03:17:54,500 INFO L175 Difference]: Start difference. First operand has 364 places, 625 transitions, 9546 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:17:54,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 643 transitions, 11184 flow [2024-06-28 03:17:59,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 643 transitions, 11032 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:59,061 INFO L231 Difference]: Finished difference. Result has 368 places, 630 transitions, 9650 flow [2024-06-28 03:17:59,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9394, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9650, PETRI_PLACES=368, PETRI_TRANSITIONS=630} [2024-06-28 03:17:59,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-28 03:17:59,061 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 630 transitions, 9650 flow [2024-06-28 03:17:59,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:59,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:59,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:59,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:17:59,062 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:59,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1535494122, now seen corresponding path program 10 times [2024-06-28 03:17:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32562104] [2024-06-28 03:17:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:59,675 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 03:17:59,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32562104] [2024-06-28 03:17:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32562104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:59,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:59,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625255752] [2024-06-28 03:17:59,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:59,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:59,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:17:59,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 630 transitions, 9650 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:59,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:59,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:17:59,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:01,653 INFO L124 PetriNetUnfolderBase]: 4985/7911 cut-off events. [2024-06-28 03:18:01,653 INFO L125 PetriNetUnfolderBase]: For 1079009/1079013 co-relation queries the response was YES. [2024-06-28 03:18:01,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79639 conditions, 7911 events. 4985/7911 cut-off events. For 1079009/1079013 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 50256 event pairs, 1038 based on Foata normal form. 6/7916 useless extension candidates. Maximal degree in co-relation 79467. Up to 7637 conditions per place. [2024-06-28 03:18:01,782 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 591 selfloop transitions, 46 changer transitions 0/641 dead transitions. [2024-06-28 03:18:01,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 641 transitions, 10966 flow [2024-06-28 03:18:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:18:01,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 03:18:01,783 INFO L175 Difference]: Start difference. First operand has 368 places, 630 transitions, 9650 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:18:01,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 641 transitions, 10966 flow [2024-06-28 03:18:06,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 641 transitions, 10727 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:06,385 INFO L231 Difference]: Finished difference. Result has 372 places, 630 transitions, 9509 flow [2024-06-28 03:18:06,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9411, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9509, PETRI_PLACES=372, PETRI_TRANSITIONS=630} [2024-06-28 03:18:06,386 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-28 03:18:06,386 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 630 transitions, 9509 flow [2024-06-28 03:18:06,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:06,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:06,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:06,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:18:06,386 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:06,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:06,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1312891182, now seen corresponding path program 11 times [2024-06-28 03:18:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:06,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832949308] [2024-06-28 03:18:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:06,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:07,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:07,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832949308] [2024-06-28 03:18:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832949308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:07,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:07,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402414618] [2024-06-28 03:18:07,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:07,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:07,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:07,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:18:07,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 630 transitions, 9509 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:07,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:07,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:18:07,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:09,059 INFO L124 PetriNetUnfolderBase]: 4995/7929 cut-off events. [2024-06-28 03:18:09,059 INFO L125 PetriNetUnfolderBase]: For 1095329/1095333 co-relation queries the response was YES. [2024-06-28 03:18:09,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79728 conditions, 7929 events. 4995/7929 cut-off events. For 1095329/1095333 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 50446 event pairs, 1040 based on Foata normal form. 6/7934 useless extension candidates. Maximal degree in co-relation 79555. Up to 7544 conditions per place. [2024-06-28 03:18:09,190 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 562 selfloop transitions, 89 changer transitions 0/655 dead transitions. [2024-06-28 03:18:09,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 655 transitions, 11513 flow [2024-06-28 03:18:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:18:09,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:18:09,191 INFO L175 Difference]: Start difference. First operand has 372 places, 630 transitions, 9509 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:18:09,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 655 transitions, 11513 flow [2024-06-28 03:18:13,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 655 transitions, 11395 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:13,461 INFO L231 Difference]: Finished difference. Result has 374 places, 638 transitions, 9834 flow [2024-06-28 03:18:13,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9391, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9834, PETRI_PLACES=374, PETRI_TRANSITIONS=638} [2024-06-28 03:18:13,462 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-06-28 03:18:13,462 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 638 transitions, 9834 flow [2024-06-28 03:18:13,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:13,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:13,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:13,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:18:13,462 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:13,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:13,463 INFO L85 PathProgramCache]: Analyzing trace with hash 793563816, now seen corresponding path program 12 times [2024-06-28 03:18:13,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:13,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340736928] [2024-06-28 03:18:13,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:13,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:14,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340736928] [2024-06-28 03:18:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340736928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:14,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:14,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214381850] [2024-06-28 03:18:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:14,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:14,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:18:14,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 638 transitions, 9834 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:14,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:14,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:18:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:16,172 INFO L124 PetriNetUnfolderBase]: 4989/7919 cut-off events. [2024-06-28 03:18:16,172 INFO L125 PetriNetUnfolderBase]: For 1104446/1104450 co-relation queries the response was YES. [2024-06-28 03:18:16,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79907 conditions, 7919 events. 4989/7919 cut-off events. For 1104446/1104450 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 50362 event pairs, 1035 based on Foata normal form. 6/7924 useless extension candidates. Maximal degree in co-relation 79732. Up to 7539 conditions per place. [2024-06-28 03:18:16,287 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 554 selfloop transitions, 96 changer transitions 0/654 dead transitions. [2024-06-28 03:18:16,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 654 transitions, 11430 flow [2024-06-28 03:18:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:18:16,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-28 03:18:16,288 INFO L175 Difference]: Start difference. First operand has 374 places, 638 transitions, 9834 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:18:16,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 654 transitions, 11430 flow [2024-06-28 03:18:20,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 654 transitions, 11238 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-06-28 03:18:20,922 INFO L231 Difference]: Finished difference. Result has 379 places, 638 transitions, 9840 flow [2024-06-28 03:18:20,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9642, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9840, PETRI_PLACES=379, PETRI_TRANSITIONS=638} [2024-06-28 03:18:20,922 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 337 predicate places. [2024-06-28 03:18:20,922 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 638 transitions, 9840 flow [2024-06-28 03:18:20,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:20,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:20,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:20,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:18:20,923 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:20,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash -834698080, now seen corresponding path program 4 times [2024-06-28 03:18:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063203005] [2024-06-28 03:18:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:21,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:21,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063203005] [2024-06-28 03:18:21,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063203005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:21,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:21,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:21,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212470599] [2024-06-28 03:18:21,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:21,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:21,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:21,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:21,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:21,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:18:21,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 638 transitions, 9840 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:21,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:21,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:18:21,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:24,051 INFO L124 PetriNetUnfolderBase]: 4984/7909 cut-off events. [2024-06-28 03:18:24,051 INFO L125 PetriNetUnfolderBase]: For 1108314/1108314 co-relation queries the response was YES. [2024-06-28 03:18:24,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79805 conditions, 7909 events. 4984/7909 cut-off events. For 1108314/1108314 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 50169 event pairs, 915 based on Foata normal form. 2/7910 useless extension candidates. Maximal degree in co-relation 79628. Up to 7583 conditions per place. [2024-06-28 03:18:24,164 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 577 selfloop transitions, 68 changer transitions 0/649 dead transitions. [2024-06-28 03:18:24,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 649 transitions, 11160 flow [2024-06-28 03:18:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:24,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:18:24,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 03:18:24,165 INFO L175 Difference]: Start difference. First operand has 379 places, 638 transitions, 9840 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:18:24,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 649 transitions, 11160 flow [2024-06-28 03:18:27,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 649 transitions, 10939 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:27,903 INFO L231 Difference]: Finished difference. Result has 381 places, 638 transitions, 9760 flow [2024-06-28 03:18:27,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9619, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9760, PETRI_PLACES=381, PETRI_TRANSITIONS=638} [2024-06-28 03:18:27,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-28 03:18:27,904 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 638 transitions, 9760 flow [2024-06-28 03:18:27,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:27,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:27,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:27,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:18:27,904 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:27,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1722267350, now seen corresponding path program 13 times [2024-06-28 03:18:27,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:27,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878692851] [2024-06-28 03:18:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:27,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:28,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878692851] [2024-06-28 03:18:28,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878692851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:28,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:28,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:28,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18305429] [2024-06-28 03:18:28,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:28,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:28,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:18:28,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 638 transitions, 9760 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:28,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:28,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:18:28,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:30,599 INFO L124 PetriNetUnfolderBase]: 4993/7931 cut-off events. [2024-06-28 03:18:30,599 INFO L125 PetriNetUnfolderBase]: For 1114052/1114054 co-relation queries the response was YES. [2024-06-28 03:18:30,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79739 conditions, 7931 events. 4993/7931 cut-off events. For 1114052/1114054 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 50510 event pairs, 1032 based on Foata normal form. 4/7934 useless extension candidates. Maximal degree in co-relation 79561. Up to 7642 conditions per place. [2024-06-28 03:18:30,729 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 608 selfloop transitions, 52 changer transitions 0/664 dead transitions. [2024-06-28 03:18:30,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 664 transitions, 11246 flow [2024-06-28 03:18:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:18:30,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:18:30,730 INFO L175 Difference]: Start difference. First operand has 381 places, 638 transitions, 9760 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:18:30,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 664 transitions, 11246 flow [2024-06-28 03:18:35,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 664 transitions, 11030 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:35,815 INFO L231 Difference]: Finished difference. Result has 383 places, 644 transitions, 9758 flow [2024-06-28 03:18:35,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9544, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9758, PETRI_PLACES=383, PETRI_TRANSITIONS=644} [2024-06-28 03:18:35,815 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-06-28 03:18:35,815 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 644 transitions, 9758 flow [2024-06-28 03:18:35,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:35,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:35,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:35,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:18:35,816 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:35,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2041681458, now seen corresponding path program 1 times [2024-06-28 03:18:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:35,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272571495] [2024-06-28 03:18:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:35,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:36,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:36,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272571495] [2024-06-28 03:18:36,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272571495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:36,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:36,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:36,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342871826] [2024-06-28 03:18:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:36,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:36,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:36,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:18:36,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 644 transitions, 9758 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:36,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:36,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:18:36,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:38,650 INFO L124 PetriNetUnfolderBase]: 4859/7790 cut-off events. [2024-06-28 03:18:38,651 INFO L125 PetriNetUnfolderBase]: For 997726/997736 co-relation queries the response was YES. [2024-06-28 03:18:38,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76476 conditions, 7790 events. 4859/7790 cut-off events. For 997726/997736 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 50345 event pairs, 1074 based on Foata normal form. 2/7783 useless extension candidates. Maximal degree in co-relation 76297. Up to 7337 conditions per place. [2024-06-28 03:18:38,774 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 606 selfloop transitions, 30 changer transitions 0/670 dead transitions. [2024-06-28 03:18:38,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 670 transitions, 11490 flow [2024-06-28 03:18:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:18:38,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:18:38,775 INFO L175 Difference]: Start difference. First operand has 383 places, 644 transitions, 9758 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:18:38,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 670 transitions, 11490 flow [2024-06-28 03:18:42,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 670 transitions, 11364 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:42,619 INFO L231 Difference]: Finished difference. Result has 384 places, 648 transitions, 9877 flow [2024-06-28 03:18:42,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9632, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9877, PETRI_PLACES=384, PETRI_TRANSITIONS=648} [2024-06-28 03:18:42,620 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 342 predicate places. [2024-06-28 03:18:42,620 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 648 transitions, 9877 flow [2024-06-28 03:18:42,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:42,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:42,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:42,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:18:42,621 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:42,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2044359734, now seen corresponding path program 1 times [2024-06-28 03:18:42,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:42,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669328302] [2024-06-28 03:18:42,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669328302] [2024-06-28 03:18:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669328302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626092168] [2024-06-28 03:18:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:43,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:43,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:43,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:18:43,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 648 transitions, 9877 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:43,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:43,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:18:43,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:45,491 INFO L124 PetriNetUnfolderBase]: 4884/7826 cut-off events. [2024-06-28 03:18:45,491 INFO L125 PetriNetUnfolderBase]: For 1024135/1024145 co-relation queries the response was YES. [2024-06-28 03:18:45,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77098 conditions, 7826 events. 4884/7826 cut-off events. For 1024135/1024145 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 50603 event pairs, 1116 based on Foata normal form. 2/7819 useless extension candidates. Maximal degree in co-relation 76918. Up to 7279 conditions per place. [2024-06-28 03:18:45,614 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 580 selfloop transitions, 68 changer transitions 0/682 dead transitions. [2024-06-28 03:18:45,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 682 transitions, 11917 flow [2024-06-28 03:18:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:18:45,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603658536585366 [2024-06-28 03:18:45,615 INFO L175 Difference]: Start difference. First operand has 384 places, 648 transitions, 9877 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:18:45,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 682 transitions, 11917 flow [2024-06-28 03:18:50,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 682 transitions, 11780 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:50,532 INFO L231 Difference]: Finished difference. Result has 390 places, 660 transitions, 10131 flow [2024-06-28 03:18:50,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9743, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10131, PETRI_PLACES=390, PETRI_TRANSITIONS=660} [2024-06-28 03:18:50,532 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-06-28 03:18:50,532 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 660 transitions, 10131 flow [2024-06-28 03:18:50,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:50,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:50,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:50,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:18:50,533 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:50,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2041678668, now seen corresponding path program 2 times [2024-06-28 03:18:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:50,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065496269] [2024-06-28 03:18:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:50,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:51,514 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 03:18:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065496269] [2024-06-28 03:18:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065496269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:51,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554560798] [2024-06-28 03:18:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:51,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:18:51,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 660 transitions, 10131 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:51,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:51,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:18:51,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:53,664 INFO L124 PetriNetUnfolderBase]: 4879/7821 cut-off events. [2024-06-28 03:18:53,664 INFO L125 PetriNetUnfolderBase]: For 1035239/1035249 co-relation queries the response was YES. [2024-06-28 03:18:53,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77633 conditions, 7821 events. 4879/7821 cut-off events. For 1035239/1035249 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 50620 event pairs, 1114 based on Foata normal form. 2/7814 useless extension candidates. Maximal degree in co-relation 77449. Up to 7396 conditions per place. [2024-06-28 03:18:53,781 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 612 selfloop transitions, 32 changer transitions 0/678 dead transitions. [2024-06-28 03:18:53,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 678 transitions, 11475 flow [2024-06-28 03:18:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:18:53,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:18:53,782 INFO L175 Difference]: Start difference. First operand has 390 places, 660 transitions, 10131 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:18:53,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 678 transitions, 11475 flow [2024-06-28 03:18:58,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 678 transitions, 11332 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-06-28 03:18:58,829 INFO L231 Difference]: Finished difference. Result has 397 places, 660 transitions, 10058 flow [2024-06-28 03:18:58,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9988, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10058, PETRI_PLACES=397, PETRI_TRANSITIONS=660} [2024-06-28 03:18:58,829 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 355 predicate places. [2024-06-28 03:18:58,829 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 660 transitions, 10058 flow [2024-06-28 03:18:58,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:58,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:58,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:58,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:18:58,829 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:58,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:58,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2041558574, now seen corresponding path program 2 times [2024-06-28 03:18:58,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:58,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121325125] [2024-06-28 03:18:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:58,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121325125] [2024-06-28 03:18:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121325125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:59,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:59,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:59,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573326173] [2024-06-28 03:18:59,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:59,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:59,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:59,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:18:59,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 660 transitions, 10058 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:59,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:59,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:18:59,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:01,960 INFO L124 PetriNetUnfolderBase]: 4884/7827 cut-off events. [2024-06-28 03:19:01,960 INFO L125 PetriNetUnfolderBase]: For 1049066/1049076 co-relation queries the response was YES. [2024-06-28 03:19:02,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77580 conditions, 7827 events. 4884/7827 cut-off events. For 1049066/1049076 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 50611 event pairs, 1113 based on Foata normal form. 3/7821 useless extension candidates. Maximal degree in co-relation 77394. Up to 7349 conditions per place. [2024-06-28 03:19:02,077 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 587 selfloop transitions, 58 changer transitions 0/679 dead transitions. [2024-06-28 03:19:02,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 679 transitions, 11456 flow [2024-06-28 03:19:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:19:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:19:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:19:02,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:19:02,078 INFO L175 Difference]: Start difference. First operand has 397 places, 660 transitions, 10058 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:19:02,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 679 transitions, 11456 flow [2024-06-28 03:19:08,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 679 transitions, 11380 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:08,241 INFO L231 Difference]: Finished difference. Result has 397 places, 663 transitions, 10167 flow [2024-06-28 03:19:08,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9982, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10167, PETRI_PLACES=397, PETRI_TRANSITIONS=663} [2024-06-28 03:19:08,242 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 355 predicate places. [2024-06-28 03:19:08,242 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 663 transitions, 10167 flow [2024-06-28 03:19:08,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:08,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:08,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:08,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:19:08,242 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:08,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2041563224, now seen corresponding path program 3 times [2024-06-28 03:19:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049646188] [2024-06-28 03:19:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:09,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:09,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049646188] [2024-06-28 03:19:09,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049646188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:09,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:09,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:19:09,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003071227] [2024-06-28 03:19:09,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:09,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:19:09,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:19:09,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:19:09,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:19:09,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 663 transitions, 10167 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:09,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:09,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:19:09,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:11,088 INFO L124 PetriNetUnfolderBase]: 4892/7843 cut-off events. [2024-06-28 03:19:11,089 INFO L125 PetriNetUnfolderBase]: For 1059607/1059617 co-relation queries the response was YES. [2024-06-28 03:19:11,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77949 conditions, 7843 events. 4892/7843 cut-off events. For 1059607/1059617 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 50728 event pairs, 1109 based on Foata normal form. 2/7836 useless extension candidates. Maximal degree in co-relation 77762. Up to 7354 conditions per place. [2024-06-28 03:19:11,224 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 585 selfloop transitions, 64 changer transitions 0/683 dead transitions. [2024-06-28 03:19:11,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 683 transitions, 11581 flow [2024-06-28 03:19:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:19:11,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:19:11,225 INFO L175 Difference]: Start difference. First operand has 397 places, 663 transitions, 10167 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:19:11,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 683 transitions, 11581 flow [2024-06-28 03:19:16,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 683 transitions, 11426 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:16,680 INFO L231 Difference]: Finished difference. Result has 400 places, 666 transitions, 10219 flow [2024-06-28 03:19:16,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10012, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10219, PETRI_PLACES=400, PETRI_TRANSITIONS=666} [2024-06-28 03:19:16,681 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 358 predicate places. [2024-06-28 03:19:16,681 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 666 transitions, 10219 flow [2024-06-28 03:19:16,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:16,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:16,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:16,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:19:16,681 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:16,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash 683961216, now seen corresponding path program 4 times [2024-06-28 03:19:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:16,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910166066] [2024-06-28 03:19:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:16,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:17,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:17,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910166066] [2024-06-28 03:19:17,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910166066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:17,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:17,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:19:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95790898] [2024-06-28 03:19:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:19:17,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:17,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:19:17,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:19:17,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:19:17,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 666 transitions, 10219 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:17,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:17,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:19:17,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:19,622 INFO L124 PetriNetUnfolderBase]: 4922/7883 cut-off events. [2024-06-28 03:19:19,622 INFO L125 PetriNetUnfolderBase]: For 1088576/1088586 co-relation queries the response was YES. [2024-06-28 03:19:19,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78649 conditions, 7883 events. 4922/7883 cut-off events. For 1088576/1088586 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 50961 event pairs, 1111 based on Foata normal form. 2/7876 useless extension candidates. Maximal degree in co-relation 78461. Up to 7361 conditions per place. [2024-06-28 03:19:19,754 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 594 selfloop transitions, 70 changer transitions 0/698 dead transitions. [2024-06-28 03:19:19,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 698 transitions, 11995 flow [2024-06-28 03:19:19,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:19:19,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 03:19:19,755 INFO L175 Difference]: Start difference. First operand has 400 places, 666 transitions, 10219 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:19:19,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 698 transitions, 11995 flow [2024-06-28 03:19:25,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 698 transitions, 11800 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:25,725 INFO L231 Difference]: Finished difference. Result has 401 places, 672 transitions, 10316 flow [2024-06-28 03:19:25,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10038, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10316, PETRI_PLACES=401, PETRI_TRANSITIONS=672} [2024-06-28 03:19:25,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-28 03:19:25,726 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 672 transitions, 10316 flow [2024-06-28 03:19:25,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:25,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:25,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:25,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:19:25,726 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:25,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:25,727 INFO L85 PathProgramCache]: Analyzing trace with hash 684138846, now seen corresponding path program 5 times [2024-06-28 03:19:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:25,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25551567] [2024-06-28 03:19:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:26,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:26,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25551567] [2024-06-28 03:19:26,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25551567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:26,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:26,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:26,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074685514] [2024-06-28 03:19:26,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:26,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:26,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:26,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:26,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:26,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:19:26,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 672 transitions, 10316 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:26,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:26,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:19:26,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:28,818 INFO L124 PetriNetUnfolderBase]: 4937/7906 cut-off events. [2024-06-28 03:19:28,818 INFO L125 PetriNetUnfolderBase]: For 1094960/1094970 co-relation queries the response was YES. [2024-06-28 03:19:28,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78792 conditions, 7906 events. 4937/7906 cut-off events. For 1094960/1094970 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 51147 event pairs, 1114 based on Foata normal form. 3/7900 useless extension candidates. Maximal degree in co-relation 78604. Up to 7408 conditions per place. [2024-06-28 03:19:28,947 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 598 selfloop transitions, 63 changer transitions 0/695 dead transitions. [2024-06-28 03:19:28,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 695 transitions, 12044 flow [2024-06-28 03:19:28,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:19:28,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:19:28,948 INFO L175 Difference]: Start difference. First operand has 401 places, 672 transitions, 10316 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:19:28,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 695 transitions, 12044 flow [2024-06-28 03:19:34,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 695 transitions, 11918 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:34,759 INFO L231 Difference]: Finished difference. Result has 405 places, 675 transitions, 10397 flow [2024-06-28 03:19:34,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10190, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10397, PETRI_PLACES=405, PETRI_TRANSITIONS=675} [2024-06-28 03:19:34,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-28 03:19:34,759 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 675 transitions, 10397 flow [2024-06-28 03:19:34,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:34,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:34,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:34,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:19:34,760 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:34,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:34,760 INFO L85 PathProgramCache]: Analyzing trace with hash 620751044, now seen corresponding path program 1 times [2024-06-28 03:19:34,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:34,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500108675] [2024-06-28 03:19:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:34,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:35,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500108675] [2024-06-28 03:19:35,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500108675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:35,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:35,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28411223] [2024-06-28 03:19:35,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:35,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:35,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:35,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:19:35,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 675 transitions, 10397 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:35,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:35,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:19:35,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:38,044 INFO L124 PetriNetUnfolderBase]: 5091/8063 cut-off events. [2024-06-28 03:19:38,044 INFO L125 PetriNetUnfolderBase]: For 1235252/1235252 co-relation queries the response was YES. [2024-06-28 03:19:38,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82394 conditions, 8063 events. 5091/8063 cut-off events. For 1235252/1235252 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 51275 event pairs, 1173 based on Foata normal form. 1/8063 useless extension candidates. Maximal degree in co-relation 82204. Up to 7826 conditions per place. [2024-06-28 03:19:38,180 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 665 selfloop transitions, 23 changer transitions 0/692 dead transitions. [2024-06-28 03:19:38,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 692 transitions, 11929 flow [2024-06-28 03:19:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:19:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:19:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:19:38,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-28 03:19:38,181 INFO L175 Difference]: Start difference. First operand has 405 places, 675 transitions, 10397 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:19:38,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 692 transitions, 11929 flow [2024-06-28 03:19:43,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 692 transitions, 11741 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:43,956 INFO L231 Difference]: Finished difference. Result has 406 places, 681 transitions, 10401 flow [2024-06-28 03:19:43,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10217, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10401, PETRI_PLACES=406, PETRI_TRANSITIONS=681} [2024-06-28 03:19:43,956 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-28 03:19:43,956 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 681 transitions, 10401 flow [2024-06-28 03:19:43,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:43,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:43,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:19:43,957 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:43,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1021472902, now seen corresponding path program 6 times [2024-06-28 03:19:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:43,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486696771] [2024-06-28 03:19:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:43,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:44,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486696771] [2024-06-28 03:19:44,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486696771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:44,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:44,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:44,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891740368] [2024-06-28 03:19:44,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:44,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:44,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:44,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:44,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:44,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:19:44,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 681 transitions, 10401 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:44,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:44,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:19:44,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:47,052 INFO L124 PetriNetUnfolderBase]: 4958/7936 cut-off events. [2024-06-28 03:19:47,052 INFO L125 PetriNetUnfolderBase]: For 1120874/1120884 co-relation queries the response was YES. [2024-06-28 03:19:47,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79126 conditions, 7936 events. 4958/7936 cut-off events. For 1120874/1120884 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 51287 event pairs, 1115 based on Foata normal form. 3/7930 useless extension candidates. Maximal degree in co-relation 78935. Up to 7518 conditions per place. [2024-06-28 03:19:47,173 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 634 selfloop transitions, 30 changer transitions 0/698 dead transitions. [2024-06-28 03:19:47,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 698 transitions, 11845 flow [2024-06-28 03:19:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 03:19:47,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-28 03:19:47,174 INFO L175 Difference]: Start difference. First operand has 406 places, 681 transitions, 10401 flow. Second operand 9 states and 149 transitions. [2024-06-28 03:19:47,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 698 transitions, 11845 flow [2024-06-28 03:19:53,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 698 transitions, 11733 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:53,632 INFO L231 Difference]: Finished difference. Result has 409 places, 684 transitions, 10436 flow [2024-06-28 03:19:53,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10289, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10436, PETRI_PLACES=409, PETRI_TRANSITIONS=684} [2024-06-28 03:19:53,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-06-28 03:19:53,633 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 684 transitions, 10436 flow [2024-06-28 03:19:53,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:53,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:53,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:53,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:19:53,633 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:53,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash 793571752, now seen corresponding path program 7 times [2024-06-28 03:19:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:53,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250712271] [2024-06-28 03:19:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:53,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250712271] [2024-06-28 03:19:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250712271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122983414] [2024-06-28 03:19:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:54,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:54,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:19:54,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 684 transitions, 10436 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:54,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:54,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:19:54,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:56,850 INFO L124 PetriNetUnfolderBase]: 4952/7925 cut-off events. [2024-06-28 03:19:56,850 INFO L125 PetriNetUnfolderBase]: For 1117836/1117846 co-relation queries the response was YES. [2024-06-28 03:19:56,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78846 conditions, 7925 events. 4952/7925 cut-off events. For 1117836/1117846 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 51234 event pairs, 1114 based on Foata normal form. 3/7917 useless extension candidates. Maximal degree in co-relation 78654. Up to 7501 conditions per place. [2024-06-28 03:19:56,965 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 623 selfloop transitions, 42 changer transitions 0/699 dead transitions. [2024-06-28 03:19:56,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 699 transitions, 11812 flow [2024-06-28 03:19:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:19:56,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:19:56,967 INFO L175 Difference]: Start difference. First operand has 409 places, 684 transitions, 10436 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:19:56,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 699 transitions, 11812 flow [2024-06-28 03:20:02,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 699 transitions, 11659 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:02,948 INFO L231 Difference]: Finished difference. Result has 411 places, 684 transitions, 10374 flow [2024-06-28 03:20:02,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10283, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10374, PETRI_PLACES=411, PETRI_TRANSITIONS=684} [2024-06-28 03:20:02,948 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-28 03:20:02,948 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 684 transitions, 10374 flow [2024-06-28 03:20:02,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:02,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:02,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:02,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:20:02,949 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:02,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:02,949 INFO L85 PathProgramCache]: Analyzing trace with hash 316633756, now seen corresponding path program 1 times [2024-06-28 03:20:02,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:02,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675413148] [2024-06-28 03:20:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:02,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:03,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:03,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675413148] [2024-06-28 03:20:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675413148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:03,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:03,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009941418] [2024-06-28 03:20:03,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:03,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:03,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:03,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:20:03,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 684 transitions, 10374 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:03,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:03,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:20:03,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:06,314 INFO L124 PetriNetUnfolderBase]: 5107/8090 cut-off events. [2024-06-28 03:20:06,315 INFO L125 PetriNetUnfolderBase]: For 1277071/1277073 co-relation queries the response was YES. [2024-06-28 03:20:06,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82416 conditions, 8090 events. 5107/8090 cut-off events. For 1277071/1277073 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 51445 event pairs, 993 based on Foata normal form. 4/8093 useless extension candidates. Maximal degree in co-relation 82223. Up to 7451 conditions per place. [2024-06-28 03:20:06,438 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 565 selfloop transitions, 148 changer transitions 0/717 dead transitions. [2024-06-28 03:20:06,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 717 transitions, 12360 flow [2024-06-28 03:20:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:20:06,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-28 03:20:06,439 INFO L175 Difference]: Start difference. First operand has 411 places, 684 transitions, 10374 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:20:06,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 717 transitions, 12360 flow [2024-06-28 03:20:13,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 717 transitions, 12241 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:13,080 INFO L231 Difference]: Finished difference. Result has 412 places, 691 transitions, 10763 flow [2024-06-28 03:20:13,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10255, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10763, PETRI_PLACES=412, PETRI_TRANSITIONS=691} [2024-06-28 03:20:13,080 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-28 03:20:13,080 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 691 transitions, 10763 flow [2024-06-28 03:20:13,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:13,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:13,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:13,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:20:13,081 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:13,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1350890892, now seen corresponding path program 2 times [2024-06-28 03:20:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:13,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653029800] [2024-06-28 03:20:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:13,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:13,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653029800] [2024-06-28 03:20:13,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653029800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:13,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:13,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180339901] [2024-06-28 03:20:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:13,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:20:13,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 691 transitions, 10763 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:13,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:13,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:20:13,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:16,041 INFO L124 PetriNetUnfolderBase]: 5117/8106 cut-off events. [2024-06-28 03:20:16,041 INFO L125 PetriNetUnfolderBase]: For 1295719/1295721 co-relation queries the response was YES. [2024-06-28 03:20:16,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83537 conditions, 8106 events. 5117/8106 cut-off events. For 1295719/1295721 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 51590 event pairs, 1016 based on Foata normal form. 3/8108 useless extension candidates. Maximal degree in co-relation 83343. Up to 7722 conditions per place. [2024-06-28 03:20:16,182 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 619 selfloop transitions, 95 changer transitions 0/718 dead transitions. [2024-06-28 03:20:16,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 718 transitions, 12392 flow [2024-06-28 03:20:16,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:20:16,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:20:16,183 INFO L175 Difference]: Start difference. First operand has 412 places, 691 transitions, 10763 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:20:16,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 718 transitions, 12392 flow [2024-06-28 03:20:21,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 718 transitions, 12140 flow, removed 88 selfloop flow, removed 4 redundant places. [2024-06-28 03:20:21,742 INFO L231 Difference]: Finished difference. Result has 417 places, 697 transitions, 10848 flow [2024-06-28 03:20:21,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10529, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10848, PETRI_PLACES=417, PETRI_TRANSITIONS=697} [2024-06-28 03:20:21,743 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 375 predicate places. [2024-06-28 03:20:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 697 transitions, 10848 flow [2024-06-28 03:20:21,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:21,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:21,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:21,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:20:21,743 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:21,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:21,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1350653742, now seen corresponding path program 3 times [2024-06-28 03:20:21,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:21,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790187011] [2024-06-28 03:20:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:21,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:22,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:22,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790187011] [2024-06-28 03:20:22,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790187011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:22,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:22,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173039029] [2024-06-28 03:20:22,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:22,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:22,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:22,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:22,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:22,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:20:22,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 697 transitions, 10848 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:22,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:22,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:20:22,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:24,828 INFO L124 PetriNetUnfolderBase]: 5122/8113 cut-off events. [2024-06-28 03:20:24,828 INFO L125 PetriNetUnfolderBase]: For 1317174/1317176 co-relation queries the response was YES. [2024-06-28 03:20:24,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83846 conditions, 8113 events. 5122/8113 cut-off events. For 1317174/1317176 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 51622 event pairs, 1018 based on Foata normal form. 3/8115 useless extension candidates. Maximal degree in co-relation 83650. Up to 7698 conditions per place. [2024-06-28 03:20:24,964 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 607 selfloop transitions, 110 changer transitions 0/721 dead transitions. [2024-06-28 03:20:24,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 721 transitions, 12446 flow [2024-06-28 03:20:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:20:24,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:20:24,965 INFO L175 Difference]: Start difference. First operand has 417 places, 697 transitions, 10848 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:20:24,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 721 transitions, 12446 flow [2024-06-28 03:20:30,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 721 transitions, 12173 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:30,725 INFO L231 Difference]: Finished difference. Result has 420 places, 700 transitions, 10910 flow [2024-06-28 03:20:30,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10575, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10910, PETRI_PLACES=420, PETRI_TRANSITIONS=700} [2024-06-28 03:20:30,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-06-28 03:20:30,726 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 700 transitions, 10910 flow [2024-06-28 03:20:30,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:30,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:30,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:30,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:20:30,726 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:30,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash -765819733, now seen corresponding path program 1 times [2024-06-28 03:20:30,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:30,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755821815] [2024-06-28 03:20:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:30,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:31,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755821815] [2024-06-28 03:20:31,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755821815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:31,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:31,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:31,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201977248] [2024-06-28 03:20:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:31,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:31,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:20:31,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 700 transitions, 10910 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:31,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:31,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:20:31,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:33,683 INFO L124 PetriNetUnfolderBase]: 5132/8125 cut-off events. [2024-06-28 03:20:33,683 INFO L125 PetriNetUnfolderBase]: For 1345642/1345644 co-relation queries the response was YES. [2024-06-28 03:20:33,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84324 conditions, 8125 events. 5132/8125 cut-off events. For 1345642/1345644 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 51691 event pairs, 1026 based on Foata normal form. 4/8128 useless extension candidates. Maximal degree in co-relation 84127. Up to 7700 conditions per place. [2024-06-28 03:20:33,828 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 647 selfloop transitions, 76 changer transitions 0/727 dead transitions. [2024-06-28 03:20:33,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 727 transitions, 12592 flow [2024-06-28 03:20:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:20:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:20:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:20:33,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:20:33,829 INFO L175 Difference]: Start difference. First operand has 420 places, 700 transitions, 10910 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:20:33,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 727 transitions, 12592 flow [2024-06-28 03:20:40,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 727 transitions, 12293 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:40,167 INFO L231 Difference]: Finished difference. Result has 422 places, 704 transitions, 10938 flow [2024-06-28 03:20:40,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10611, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10938, PETRI_PLACES=422, PETRI_TRANSITIONS=704} [2024-06-28 03:20:40,167 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-06-28 03:20:40,167 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 704 transitions, 10938 flow [2024-06-28 03:20:40,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:40,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:40,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:40,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:20:40,168 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:40,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 436466914, now seen corresponding path program 1 times [2024-06-28 03:20:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550922081] [2024-06-28 03:20:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:40,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:40,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550922081] [2024-06-28 03:20:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550922081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:40,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:40,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753564495] [2024-06-28 03:20:40,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:40,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:40,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:40,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:20:40,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 704 transitions, 10938 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:40,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:40,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:20:40,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:42,937 INFO L124 PetriNetUnfolderBase]: 5142/8139 cut-off events. [2024-06-28 03:20:42,937 INFO L125 PetriNetUnfolderBase]: For 1375673/1375675 co-relation queries the response was YES. [2024-06-28 03:20:43,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85404 conditions, 8139 events. 5142/8139 cut-off events. For 1375673/1375675 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 51691 event pairs, 1029 based on Foata normal form. 4/8142 useless extension candidates. Maximal degree in co-relation 85206. Up to 7625 conditions per place. [2024-06-28 03:20:43,080 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 626 selfloop transitions, 102 changer transitions 0/732 dead transitions. [2024-06-28 03:20:43,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 732 transitions, 12826 flow [2024-06-28 03:20:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:20:43,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 03:20:43,081 INFO L175 Difference]: Start difference. First operand has 422 places, 704 transitions, 10938 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:20:43,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 732 transitions, 12826 flow [2024-06-28 03:20:48,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 732 transitions, 12535 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:48,532 INFO L231 Difference]: Finished difference. Result has 423 places, 707 transitions, 10931 flow [2024-06-28 03:20:48,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10647, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10931, PETRI_PLACES=423, PETRI_TRANSITIONS=707} [2024-06-28 03:20:48,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-28 03:20:48,533 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 707 transitions, 10931 flow [2024-06-28 03:20:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:48,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:48,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:48,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:20:48,533 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:48,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash 461847189, now seen corresponding path program 1 times [2024-06-28 03:20:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735225634] [2024-06-28 03:20:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:49,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735225634] [2024-06-28 03:20:49,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735225634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:49,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:49,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:49,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713261912] [2024-06-28 03:20:49,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:49,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:49,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:49,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:49,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:49,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:20:49,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 707 transitions, 10931 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:49,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:49,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:20:49,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:51,614 INFO L124 PetriNetUnfolderBase]: 5397/8509 cut-off events. [2024-06-28 03:20:51,614 INFO L125 PetriNetUnfolderBase]: For 1524079/1524081 co-relation queries the response was YES. [2024-06-28 03:20:51,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90277 conditions, 8509 events. 5397/8509 cut-off events. For 1524079/1524081 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 54090 event pairs, 1039 based on Foata normal form. 10/8518 useless extension candidates. Maximal degree in co-relation 90078. Up to 7858 conditions per place. [2024-06-28 03:20:51,770 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 694 selfloop transitions, 89 changer transitions 0/787 dead transitions. [2024-06-28 03:20:51,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 787 transitions, 13873 flow [2024-06-28 03:20:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 03:20:51,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4317073170731707 [2024-06-28 03:20:51,771 INFO L175 Difference]: Start difference. First operand has 423 places, 707 transitions, 10931 flow. Second operand 10 states and 177 transitions. [2024-06-28 03:20:51,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 787 transitions, 13873 flow [2024-06-28 03:21:00,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 787 transitions, 13487 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:00,831 INFO L231 Difference]: Finished difference. Result has 432 places, 750 transitions, 11742 flow [2024-06-28 03:21:00,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10661, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11742, PETRI_PLACES=432, PETRI_TRANSITIONS=750} [2024-06-28 03:21:00,832 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-28 03:21:00,832 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 750 transitions, 11742 flow [2024-06-28 03:21:00,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:00,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:00,832 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 03:21:00,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:21:00,833 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:00,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash 436472494, now seen corresponding path program 2 times [2024-06-28 03:21:00,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:00,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612037883] [2024-06-28 03:21:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:01,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:01,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612037883] [2024-06-28 03:21:01,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612037883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:01,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:01,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248585073] [2024-06-28 03:21:01,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:01,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:01,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:01,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:01,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:01,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:21:01,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 750 transitions, 11742 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:01,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:01,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:21:01,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:04,182 INFO L124 PetriNetUnfolderBase]: 5417/8531 cut-off events. [2024-06-28 03:21:04,182 INFO L125 PetriNetUnfolderBase]: For 1527437/1527439 co-relation queries the response was YES. [2024-06-28 03:21:04,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92051 conditions, 8531 events. 5417/8531 cut-off events. For 1527437/1527439 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 54132 event pairs, 1030 based on Foata normal form. 6/8536 useless extension candidates. Maximal degree in co-relation 91846. Up to 7891 conditions per place. [2024-06-28 03:21:04,338 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 657 selfloop transitions, 118 changer transitions 0/779 dead transitions. [2024-06-28 03:21:04,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 779 transitions, 13794 flow [2024-06-28 03:21:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:21:04,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:21:04,340 INFO L175 Difference]: Start difference. First operand has 432 places, 750 transitions, 11742 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:21:04,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 779 transitions, 13794 flow [2024-06-28 03:21:12,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 779 transitions, 13517 flow, removed 88 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:12,497 INFO L231 Difference]: Finished difference. Result has 437 places, 755 transitions, 11838 flow [2024-06-28 03:21:12,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11465, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11838, PETRI_PLACES=437, PETRI_TRANSITIONS=755} [2024-06-28 03:21:12,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-28 03:21:12,498 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 755 transitions, 11838 flow [2024-06-28 03:21:12,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:12,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:12,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:12,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:21:12,498 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:12,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash 801068330, now seen corresponding path program 3 times [2024-06-28 03:21:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:12,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588481284] [2024-06-28 03:21:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:12,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:13,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:13,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588481284] [2024-06-28 03:21:13,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588481284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:13,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:13,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:13,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126830961] [2024-06-28 03:21:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:13,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:13,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:13,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:13,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:21:13,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 755 transitions, 11838 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:13,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:13,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:21:13,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:16,024 INFO L124 PetriNetUnfolderBase]: 5437/8567 cut-off events. [2024-06-28 03:21:16,024 INFO L125 PetriNetUnfolderBase]: For 1538392/1538394 co-relation queries the response was YES. [2024-06-28 03:21:16,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91810 conditions, 8567 events. 5437/8567 cut-off events. For 1538392/1538394 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 54440 event pairs, 1034 based on Foata normal form. 6/8572 useless extension candidates. Maximal degree in co-relation 91605. Up to 8206 conditions per place. [2024-06-28 03:21:16,177 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 700 selfloop transitions, 76 changer transitions 0/780 dead transitions. [2024-06-28 03:21:16,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 780 transitions, 13644 flow [2024-06-28 03:21:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:21:16,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:21:16,178 INFO L175 Difference]: Start difference. First operand has 437 places, 755 transitions, 11838 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:21:16,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 780 transitions, 13644 flow [2024-06-28 03:21:23,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 780 transitions, 13399 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:23,030 INFO L231 Difference]: Finished difference. Result has 440 places, 760 transitions, 11901 flow [2024-06-28 03:21:23,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11598, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11901, PETRI_PLACES=440, PETRI_TRANSITIONS=760} [2024-06-28 03:21:23,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 398 predicate places. [2024-06-28 03:21:23,030 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 760 transitions, 11901 flow [2024-06-28 03:21:23,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:23,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:23,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:23,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:21:23,031 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:23,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash 808420197, now seen corresponding path program 2 times [2024-06-28 03:21:23,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:23,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509139451] [2024-06-28 03:21:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:23,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509139451] [2024-06-28 03:21:23,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509139451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:23,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202484233] [2024-06-28 03:21:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:23,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:21:23,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 760 transitions, 11901 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:23,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:23,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:21:23,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:26,265 INFO L124 PetriNetUnfolderBase]: 5489/8635 cut-off events. [2024-06-28 03:21:26,265 INFO L125 PetriNetUnfolderBase]: For 1599249/1599251 co-relation queries the response was YES. [2024-06-28 03:21:26,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93306 conditions, 8635 events. 5489/8635 cut-off events. For 1599249/1599251 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 54766 event pairs, 1041 based on Foata normal form. 6/8640 useless extension candidates. Maximal degree in co-relation 93100. Up to 8276 conditions per place. [2024-06-28 03:21:26,420 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 718 selfloop transitions, 65 changer transitions 0/787 dead transitions. [2024-06-28 03:21:26,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 787 transitions, 14039 flow [2024-06-28 03:21:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 03:21:26,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073170731707317 [2024-06-28 03:21:26,421 INFO L175 Difference]: Start difference. First operand has 440 places, 760 transitions, 11901 flow. Second operand 10 states and 167 transitions. [2024-06-28 03:21:26,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 787 transitions, 14039 flow [2024-06-28 03:21:32,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 787 transitions, 13815 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:32,883 INFO L231 Difference]: Finished difference. Result has 443 places, 768 transitions, 12046 flow [2024-06-28 03:21:32,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11677, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12046, PETRI_PLACES=443, PETRI_TRANSITIONS=768} [2024-06-28 03:21:32,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-28 03:21:32,884 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 768 transitions, 12046 flow [2024-06-28 03:21:32,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:32,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:32,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:32,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:21:32,884 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:32,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1665575573, now seen corresponding path program 3 times [2024-06-28 03:21:32,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:32,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342072872] [2024-06-28 03:21:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:32,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:33,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:33,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342072872] [2024-06-28 03:21:33,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342072872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:33,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:33,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604788489] [2024-06-28 03:21:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:33,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:33,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:33,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:21:33,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 768 transitions, 12046 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:33,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:33,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:21:33,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:36,068 INFO L124 PetriNetUnfolderBase]: 5497/8647 cut-off events. [2024-06-28 03:21:36,068 INFO L125 PetriNetUnfolderBase]: For 1626256/1626258 co-relation queries the response was YES. [2024-06-28 03:21:36,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93218 conditions, 8647 events. 5497/8647 cut-off events. For 1626256/1626258 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 54880 event pairs, 1041 based on Foata normal form. 10/8656 useless extension candidates. Maximal degree in co-relation 93011. Up to 8314 conditions per place. [2024-06-28 03:21:36,231 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 722 selfloop transitions, 63 changer transitions 0/789 dead transitions. [2024-06-28 03:21:36,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 789 transitions, 13810 flow [2024-06-28 03:21:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:21:36,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:21:36,232 INFO L175 Difference]: Start difference. First operand has 443 places, 768 transitions, 12046 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:21:36,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 789 transitions, 13810 flow [2024-06-28 03:21:42,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 789 transitions, 13564 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-06-28 03:21:42,908 INFO L231 Difference]: Finished difference. Result has 447 places, 771 transitions, 12060 flow [2024-06-28 03:21:42,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11800, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12060, PETRI_PLACES=447, PETRI_TRANSITIONS=771} [2024-06-28 03:21:42,909 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 405 predicate places. [2024-06-28 03:21:42,909 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 771 transitions, 12060 flow [2024-06-28 03:21:42,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:42,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:42,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:42,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:21:42,909 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:42,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:42,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1375942970, now seen corresponding path program 4 times [2024-06-28 03:21:42,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:42,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061953893] [2024-06-28 03:21:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:42,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:43,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:43,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061953893] [2024-06-28 03:21:43,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061953893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:43,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:43,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:43,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658708490] [2024-06-28 03:21:43,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:43,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:43,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:43,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:43,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:43,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:21:43,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 771 transitions, 12060 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:43,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:43,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:21:43,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:46,239 INFO L124 PetriNetUnfolderBase]: 5510/8665 cut-off events. [2024-06-28 03:21:46,239 INFO L125 PetriNetUnfolderBase]: For 1601012/1601012 co-relation queries the response was YES. [2024-06-28 03:21:46,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93882 conditions, 8665 events. 5510/8665 cut-off events. For 1601012/1601012 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 54934 event pairs, 916 based on Foata normal form. 1/8665 useless extension candidates. Maximal degree in co-relation 93673. Up to 8256 conditions per place. [2024-06-28 03:21:46,394 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 693 selfloop transitions, 97 changer transitions 0/794 dead transitions. [2024-06-28 03:21:46,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 794 transitions, 14154 flow [2024-06-28 03:21:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:21:46,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:21:46,396 INFO L175 Difference]: Start difference. First operand has 447 places, 771 transitions, 12060 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:21:46,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 794 transitions, 14154 flow [2024-06-28 03:21:53,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 794 transitions, 13921 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:53,711 INFO L231 Difference]: Finished difference. Result has 450 places, 777 transitions, 12247 flow [2024-06-28 03:21:53,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11827, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12247, PETRI_PLACES=450, PETRI_TRANSITIONS=777} [2024-06-28 03:21:53,712 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-28 03:21:53,712 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 777 transitions, 12247 flow [2024-06-28 03:21:53,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:53,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:53,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:53,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:21:53,713 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:53,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1632582535, now seen corresponding path program 4 times [2024-06-28 03:21:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323048400] [2024-06-28 03:21:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:53,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:54,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:54,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323048400] [2024-06-28 03:21:54,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323048400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:54,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:54,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:54,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021951733] [2024-06-28 03:21:54,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:54,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:54,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:54,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:54,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:54,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:21:54,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 777 transitions, 12247 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:54,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:54,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:21:54,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:56,847 INFO L124 PetriNetUnfolderBase]: 5582/8769 cut-off events. [2024-06-28 03:21:56,847 INFO L125 PetriNetUnfolderBase]: For 1724600/1724602 co-relation queries the response was YES. [2024-06-28 03:21:56,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96020 conditions, 8769 events. 5582/8769 cut-off events. For 1724600/1724602 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 55665 event pairs, 1051 based on Foata normal form. 10/8778 useless extension candidates. Maximal degree in co-relation 95810. Up to 8300 conditions per place. [2024-06-28 03:21:57,004 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 711 selfloop transitions, 93 changer transitions 0/808 dead transitions. [2024-06-28 03:21:57,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 808 transitions, 14543 flow [2024-06-28 03:21:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:21:57,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:21:57,005 INFO L175 Difference]: Start difference. First operand has 450 places, 777 transitions, 12247 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:21:57,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 808 transitions, 14543 flow [2024-06-28 03:22:05,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 808 transitions, 14349 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-28 03:22:05,493 INFO L231 Difference]: Finished difference. Result has 455 places, 785 transitions, 12557 flow [2024-06-28 03:22:05,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12053, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12557, PETRI_PLACES=455, PETRI_TRANSITIONS=785} [2024-06-28 03:22:05,494 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 413 predicate places. [2024-06-28 03:22:05,494 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 785 transitions, 12557 flow [2024-06-28 03:22:05,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:05,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:05,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:22:05,495 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:05,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1665308446, now seen corresponding path program 4 times [2024-06-28 03:22:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:05,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432363251] [2024-06-28 03:22:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:06,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:06,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432363251] [2024-06-28 03:22:06,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432363251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:06,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:06,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982690992] [2024-06-28 03:22:06,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:06,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:06,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:06,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:06,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:06,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:22:06,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 785 transitions, 12557 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:06,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:06,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:22:06,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:09,022 INFO L124 PetriNetUnfolderBase]: 5592/8783 cut-off events. [2024-06-28 03:22:09,022 INFO L125 PetriNetUnfolderBase]: For 1707235/1707237 co-relation queries the response was YES. [2024-06-28 03:22:09,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97025 conditions, 8783 events. 5592/8783 cut-off events. For 1707235/1707237 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 55743 event pairs, 1057 based on Foata normal form. 4/8786 useless extension candidates. Maximal degree in co-relation 96813. Up to 8470 conditions per place. [2024-06-28 03:22:09,181 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 746 selfloop transitions, 54 changer transitions 0/804 dead transitions. [2024-06-28 03:22:09,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 804 transitions, 14316 flow [2024-06-28 03:22:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 03:22:09,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 03:22:09,182 INFO L175 Difference]: Start difference. First operand has 455 places, 785 transitions, 12557 flow. Second operand 10 states and 160 transitions. [2024-06-28 03:22:09,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 804 transitions, 14316 flow [2024-06-28 03:22:18,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 804 transitions, 14068 flow, removed 89 selfloop flow, removed 5 redundant places. [2024-06-28 03:22:18,809 INFO L231 Difference]: Finished difference. Result has 460 places, 788 transitions, 12509 flow [2024-06-28 03:22:18,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12309, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12509, PETRI_PLACES=460, PETRI_TRANSITIONS=788} [2024-06-28 03:22:18,809 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2024-06-28 03:22:18,809 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 788 transitions, 12509 flow [2024-06-28 03:22:18,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:18,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:18,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:22:18,810 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:18,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 797575064, now seen corresponding path program 5 times [2024-06-28 03:22:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:18,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641273852] [2024-06-28 03:22:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:19,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641273852] [2024-06-28 03:22:19,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641273852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:19,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:19,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204231567] [2024-06-28 03:22:19,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:19,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:19,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:22:19,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 788 transitions, 12509 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:19,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:19,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:22:19,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:22,633 INFO L124 PetriNetUnfolderBase]: 5602/8801 cut-off events. [2024-06-28 03:22:22,633 INFO L125 PetriNetUnfolderBase]: For 1709086/1709086 co-relation queries the response was YES. [2024-06-28 03:22:22,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96682 conditions, 8801 events. 5602/8801 cut-off events. For 1709086/1709086 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 55878 event pairs, 932 based on Foata normal form. 1/8801 useless extension candidates. Maximal degree in co-relation 96468. Up to 8400 conditions per place. [2024-06-28 03:22:22,777 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 715 selfloop transitions, 91 changer transitions 0/810 dead transitions. [2024-06-28 03:22:22,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 810 transitions, 14296 flow [2024-06-28 03:22:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:22:22,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:22:22,778 INFO L175 Difference]: Start difference. First operand has 460 places, 788 transitions, 12509 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:22:22,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 810 transitions, 14296 flow [2024-06-28 03:22:31,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 810 transitions, 14147 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:31,086 INFO L231 Difference]: Finished difference. Result has 461 places, 794 transitions, 12681 flow [2024-06-28 03:22:31,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12360, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12681, PETRI_PLACES=461, PETRI_TRANSITIONS=794} [2024-06-28 03:22:31,086 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-28 03:22:31,087 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 794 transitions, 12681 flow [2024-06-28 03:22:31,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:31,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:31,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:31,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:22:31,087 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:31,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1639813812, now seen corresponding path program 6 times [2024-06-28 03:22:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:31,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796239411] [2024-06-28 03:22:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:32,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796239411] [2024-06-28 03:22:32,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796239411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:32,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:32,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:32,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301277071] [2024-06-28 03:22:32,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:32,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:32,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:32,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:22:32,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 794 transitions, 12681 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:32,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:32,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:22:32,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:34,573 INFO L124 PetriNetUnfolderBase]: 5599/8793 cut-off events. [2024-06-28 03:22:34,574 INFO L125 PetriNetUnfolderBase]: For 1717185/1717185 co-relation queries the response was YES. [2024-06-28 03:22:34,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96725 conditions, 8793 events. 5599/8793 cut-off events. For 1717185/1717185 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 55712 event pairs, 932 based on Foata normal form. 1/8793 useless extension candidates. Maximal degree in co-relation 96510. Up to 8396 conditions per place. [2024-06-28 03:22:34,745 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 709 selfloop transitions, 97 changer transitions 0/810 dead transitions. [2024-06-28 03:22:34,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 810 transitions, 14341 flow [2024-06-28 03:22:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:34,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:22:34,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-28 03:22:34,746 INFO L175 Difference]: Start difference. First operand has 461 places, 794 transitions, 12681 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:22:34,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 810 transitions, 14341 flow [2024-06-28 03:22:44,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 810 transitions, 14013 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:44,244 INFO L231 Difference]: Finished difference. Result has 464 places, 794 transitions, 12553 flow [2024-06-28 03:22:44,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12353, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12553, PETRI_PLACES=464, PETRI_TRANSITIONS=794} [2024-06-28 03:22:44,244 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 422 predicate places. [2024-06-28 03:22:44,244 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 794 transitions, 12553 flow [2024-06-28 03:22:44,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:44,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:44,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:44,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:22:44,245 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:44,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash 227975740, now seen corresponding path program 1 times [2024-06-28 03:22:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:44,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552949471] [2024-06-28 03:22:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:45,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:45,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552949471] [2024-06-28 03:22:45,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552949471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:45,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:45,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:45,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810802199] [2024-06-28 03:22:45,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:45,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:45,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:45,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:45,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:45,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:22:45,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 794 transitions, 12553 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:45,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:45,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:22:45,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:48,648 INFO L124 PetriNetUnfolderBase]: 5607/8811 cut-off events. [2024-06-28 03:22:48,649 INFO L125 PetriNetUnfolderBase]: For 1748364/1748366 co-relation queries the response was YES. [2024-06-28 03:22:48,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96850 conditions, 8811 events. 5607/8811 cut-off events. For 1748364/1748366 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 55692 event pairs, 904 based on Foata normal form. 4/8814 useless extension candidates. Maximal degree in co-relation 96634. Up to 8283 conditions per place. [2024-06-28 03:22:48,795 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 723 selfloop transitions, 99 changer transitions 0/826 dead transitions. [2024-06-28 03:22:48,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 826 transitions, 14601 flow [2024-06-28 03:22:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:22:48,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:22:48,796 INFO L175 Difference]: Start difference. First operand has 464 places, 794 transitions, 12553 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:22:48,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 826 transitions, 14601 flow [2024-06-28 03:22:57,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 826 transitions, 14342 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:22:57,308 INFO L231 Difference]: Finished difference. Result has 464 places, 798 transitions, 12557 flow [2024-06-28 03:22:57,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12294, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12557, PETRI_PLACES=464, PETRI_TRANSITIONS=798} [2024-06-28 03:22:57,309 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 422 predicate places. [2024-06-28 03:22:57,309 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 798 transitions, 12557 flow [2024-06-28 03:22:57,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:57,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:57,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:57,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:22:57,310 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:57,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash 493999450, now seen corresponding path program 2 times [2024-06-28 03:22:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:57,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259229007] [2024-06-28 03:22:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:58,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:58,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259229007] [2024-06-28 03:22:58,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259229007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:58,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:58,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:58,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213629558] [2024-06-28 03:22:58,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:58,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:58,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:22:58,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 798 transitions, 12557 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:58,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:58,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:22:58,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:01,668 INFO L124 PetriNetUnfolderBase]: 5615/8823 cut-off events. [2024-06-28 03:23:01,668 INFO L125 PetriNetUnfolderBase]: For 1771001/1771003 co-relation queries the response was YES. [2024-06-28 03:23:01,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97206 conditions, 8823 events. 5615/8823 cut-off events. For 1771001/1771003 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 56036 event pairs, 1044 based on Foata normal form. 4/8826 useless extension candidates. Maximal degree in co-relation 96989. Up to 8417 conditions per place. [2024-06-28 03:23:02,024 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 721 selfloop transitions, 97 changer transitions 0/822 dead transitions. [2024-06-28 03:23:02,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 822 transitions, 14293 flow [2024-06-28 03:23:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:23:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:23:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:23:02,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:23:02,025 INFO L175 Difference]: Start difference. First operand has 464 places, 798 transitions, 12557 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:23:02,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 822 transitions, 14293 flow [2024-06-28 03:23:10,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 822 transitions, 14134 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 03:23:10,979 INFO L231 Difference]: Finished difference. Result has 468 places, 800 transitions, 12633 flow [2024-06-28 03:23:10,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12410, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12633, PETRI_PLACES=468, PETRI_TRANSITIONS=800} [2024-06-28 03:23:10,979 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-06-28 03:23:10,979 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 800 transitions, 12633 flow [2024-06-28 03:23:10,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:10,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:10,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:23:10,980 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:10,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1325187008, now seen corresponding path program 3 times [2024-06-28 03:23:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:10,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490964479] [2024-06-28 03:23:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:11,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490964479] [2024-06-28 03:23:11,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490964479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:11,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:11,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:23:11,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433338537] [2024-06-28 03:23:11,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:11,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:23:11,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:11,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:23:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:23:12,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:23:12,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 800 transitions, 12633 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:12,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:12,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:23:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:15,315 INFO L124 PetriNetUnfolderBase]: 5623/8839 cut-off events. [2024-06-28 03:23:15,315 INFO L125 PetriNetUnfolderBase]: For 1793460/1793462 co-relation queries the response was YES. [2024-06-28 03:23:15,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97531 conditions, 8839 events. 5623/8839 cut-off events. For 1793460/1793462 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 56226 event pairs, 1042 based on Foata normal form. 4/8842 useless extension candidates. Maximal degree in co-relation 97312. Up to 8405 conditions per place. [2024-06-28 03:23:15,467 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 726 selfloop transitions, 95 changer transitions 0/825 dead transitions. [2024-06-28 03:23:15,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 825 transitions, 14369 flow [2024-06-28 03:23:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:23:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:23:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:23:15,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:23:15,468 INFO L175 Difference]: Start difference. First operand has 468 places, 800 transitions, 12633 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:23:15,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 825 transitions, 14369 flow [2024-06-28 03:23:22,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 825 transitions, 14166 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:22,934 INFO L231 Difference]: Finished difference. Result has 470 places, 802 transitions, 12653 flow [2024-06-28 03:23:22,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12430, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12653, PETRI_PLACES=470, PETRI_TRANSITIONS=802} [2024-06-28 03:23:22,934 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 428 predicate places. [2024-06-28 03:23:22,934 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 802 transitions, 12653 flow [2024-06-28 03:23:22,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:22,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:22,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:22,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:23:22,935 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:22,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 797572088, now seen corresponding path program 4 times [2024-06-28 03:23:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:22,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777027494] [2024-06-28 03:23:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:23,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:23,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777027494] [2024-06-28 03:23:23,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777027494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:23,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:23,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:23:23,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550134134] [2024-06-28 03:23:23,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:23,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:23:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:23:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:23:24,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:23:24,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 802 transitions, 12653 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:24,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:24,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:23:24,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:27,422 INFO L124 PetriNetUnfolderBase]: 5631/8841 cut-off events. [2024-06-28 03:23:27,422 INFO L125 PetriNetUnfolderBase]: For 1817065/1817065 co-relation queries the response was YES. [2024-06-28 03:23:27,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97772 conditions, 8841 events. 5631/8841 cut-off events. For 1817065/1817065 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 56028 event pairs, 927 based on Foata normal form. 2/8842 useless extension candidates. Maximal degree in co-relation 97552. Up to 8441 conditions per place. [2024-06-28 03:23:27,572 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 727 selfloop transitions, 90 changer transitions 0/821 dead transitions. [2024-06-28 03:23:27,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 821 transitions, 14365 flow [2024-06-28 03:23:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:23:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:23:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:23:27,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:23:27,573 INFO L175 Difference]: Start difference. First operand has 470 places, 802 transitions, 12653 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:23:27,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 821 transitions, 14365 flow [2024-06-28 03:23:37,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 821 transitions, 14162 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:37,168 INFO L231 Difference]: Finished difference. Result has 472 places, 804 transitions, 12667 flow [2024-06-28 03:23:37,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12450, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12667, PETRI_PLACES=472, PETRI_TRANSITIONS=804} [2024-06-28 03:23:37,168 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 430 predicate places. [2024-06-28 03:23:37,168 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 804 transitions, 12667 flow [2024-06-28 03:23:37,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:37,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:37,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:37,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:23:37,169 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:37,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash 797245658, now seen corresponding path program 5 times [2024-06-28 03:23:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369369979] [2024-06-28 03:23:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:38,192 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 03:23:38,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:38,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369369979] [2024-06-28 03:23:38,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369369979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:38,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:23:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272985097] [2024-06-28 03:23:38,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:38,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:23:38,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:38,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:23:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:23:38,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:23:38,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 804 transitions, 12667 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:38,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:38,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:23:38,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:41,537 INFO L124 PetriNetUnfolderBase]: 5652/8872 cut-off events. [2024-06-28 03:23:41,537 INFO L125 PetriNetUnfolderBase]: For 1858342/1858342 co-relation queries the response was YES. [2024-06-28 03:23:41,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98386 conditions, 8872 events. 5652/8872 cut-off events. For 1858342/1858342 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 56331 event pairs, 933 based on Foata normal form. 2/8873 useless extension candidates. Maximal degree in co-relation 98165. Up to 8445 conditions per place. [2024-06-28 03:23:41,710 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 730 selfloop transitions, 93 changer transitions 0/827 dead transitions. [2024-06-28 03:23:41,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 827 transitions, 14701 flow [2024-06-28 03:23:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:23:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:23:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:23:41,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:23:41,711 INFO L175 Difference]: Start difference. First operand has 472 places, 804 transitions, 12667 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:23:41,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 827 transitions, 14701 flow [2024-06-28 03:23:51,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 827 transitions, 14504 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:51,837 INFO L231 Difference]: Finished difference. Result has 474 places, 808 transitions, 12729 flow [2024-06-28 03:23:51,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12470, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12729, PETRI_PLACES=474, PETRI_TRANSITIONS=808} [2024-06-28 03:23:51,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-28 03:23:51,837 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 808 transitions, 12729 flow [2024-06-28 03:23:51,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:51,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:51,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:23:51,838 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:51,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash 808296848, now seen corresponding path program 6 times [2024-06-28 03:23:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101804610] [2024-06-28 03:23:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:52,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:52,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101804610] [2024-06-28 03:23:52,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101804610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:52,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:52,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:23:52,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73764081] [2024-06-28 03:23:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:52,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:23:52,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:23:52,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:23:52,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:23:52,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 808 transitions, 12729 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:52,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:52,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:23:52,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:56,035 INFO L124 PetriNetUnfolderBase]: 5647/8861 cut-off events. [2024-06-28 03:23:56,035 INFO L125 PetriNetUnfolderBase]: For 1864500/1864500 co-relation queries the response was YES. [2024-06-28 03:23:56,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98247 conditions, 8861 events. 5647/8861 cut-off events. For 1864500/1864500 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 56138 event pairs, 927 based on Foata normal form. 2/8862 useless extension candidates. Maximal degree in co-relation 98025. Up to 8465 conditions per place. [2024-06-28 03:23:56,448 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 725 selfloop transitions, 96 changer transitions 0/825 dead transitions. [2024-06-28 03:23:56,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 825 transitions, 14421 flow [2024-06-28 03:23:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:23:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:23:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:23:56,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-28 03:23:56,449 INFO L175 Difference]: Start difference. First operand has 474 places, 808 transitions, 12729 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:23:56,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 825 transitions, 14421 flow [2024-06-28 03:24:06,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 825 transitions, 14279 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:06,910 INFO L231 Difference]: Finished difference. Result has 478 places, 808 transitions, 12784 flow [2024-06-28 03:24:06,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12587, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12784, PETRI_PLACES=478, PETRI_TRANSITIONS=808} [2024-06-28 03:24:06,911 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-28 03:24:06,911 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 808 transitions, 12784 flow [2024-06-28 03:24:06,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:06,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:06,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:06,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:24:06,912 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:06,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1665585493, now seen corresponding path program 1 times [2024-06-28 03:24:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:06,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393717508] [2024-06-28 03:24:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:06,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:07,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393717508] [2024-06-28 03:24:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393717508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:07,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:07,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270258469] [2024-06-28 03:24:07,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:07,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:07,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:07,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:24:07,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 808 transitions, 12784 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:07,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:07,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:24:07,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:11,179 INFO L124 PetriNetUnfolderBase]: 5691/8929 cut-off events. [2024-06-28 03:24:11,179 INFO L125 PetriNetUnfolderBase]: For 1983840/1983840 co-relation queries the response was YES. [2024-06-28 03:24:11,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99070 conditions, 8929 events. 5691/8929 cut-off events. For 1983840/1983840 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 56647 event pairs, 931 based on Foata normal form. 12/8940 useless extension candidates. Maximal degree in co-relation 98846. Up to 8404 conditions per place. [2024-06-28 03:24:11,340 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 722 selfloop transitions, 109 changer transitions 0/835 dead transitions. [2024-06-28 03:24:11,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 835 transitions, 14666 flow [2024-06-28 03:24:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:24:11,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:24:11,341 INFO L175 Difference]: Start difference. First operand has 478 places, 808 transitions, 12784 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:24:11,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 835 transitions, 14666 flow [2024-06-28 03:24:20,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 835 transitions, 14460 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:24:20,104 INFO L231 Difference]: Finished difference. Result has 479 places, 809 transitions, 12823 flow [2024-06-28 03:24:20,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12578, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12823, PETRI_PLACES=479, PETRI_TRANSITIONS=809} [2024-06-28 03:24:20,105 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-06-28 03:24:20,105 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 809 transitions, 12823 flow [2024-06-28 03:24:20,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:20,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:20,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:20,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:24:20,105 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:20,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1619269069, now seen corresponding path program 2 times [2024-06-28 03:24:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:20,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412366492] [2024-06-28 03:24:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:20,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412366492] [2024-06-28 03:24:20,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412366492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:20,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:20,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598293459] [2024-06-28 03:24:20,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:20,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:20,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:20,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:20,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:21,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:24:21,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 809 transitions, 12823 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:21,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:21,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:24:21,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:24,161 INFO L124 PetriNetUnfolderBase]: 5717/8979 cut-off events. [2024-06-28 03:24:24,161 INFO L125 PetriNetUnfolderBase]: For 1939532/1939536 co-relation queries the response was YES. [2024-06-28 03:24:24,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100395 conditions, 8979 events. 5717/8979 cut-off events. For 1939532/1939536 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 57226 event pairs, 1078 based on Foata normal form. 6/8984 useless extension candidates. Maximal degree in co-relation 100170. Up to 8269 conditions per place. [2024-06-28 03:24:24,327 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 701 selfloop transitions, 134 changer transitions 0/839 dead transitions. [2024-06-28 03:24:24,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 839 transitions, 15193 flow [2024-06-28 03:24:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:24:24,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:24:24,328 INFO L175 Difference]: Start difference. First operand has 479 places, 809 transitions, 12823 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:24:24,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 839 transitions, 15193 flow [2024-06-28 03:24:32,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 839 transitions, 14970 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:24:32,842 INFO L231 Difference]: Finished difference. Result has 481 places, 817 transitions, 13237 flow [2024-06-28 03:24:32,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12600, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13237, PETRI_PLACES=481, PETRI_TRANSITIONS=817} [2024-06-28 03:24:32,843 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-28 03:24:32,843 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 817 transitions, 13237 flow [2024-06-28 03:24:32,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:32,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:32,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:32,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:24:32,843 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:32,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1984735958, now seen corresponding path program 5 times [2024-06-28 03:24:32,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:32,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912569038] [2024-06-28 03:24:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:32,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:33,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:33,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912569038] [2024-06-28 03:24:33,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912569038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:33,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:33,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271494567] [2024-06-28 03:24:33,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:33,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:33,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:33,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:33,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:24:33,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 817 transitions, 13237 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:33,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:33,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:24:33,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:36,889 INFO L124 PetriNetUnfolderBase]: 5727/8994 cut-off events. [2024-06-28 03:24:36,889 INFO L125 PetriNetUnfolderBase]: For 1979511/1979515 co-relation queries the response was YES. [2024-06-28 03:24:37,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101734 conditions, 8994 events. 5727/8994 cut-off events. For 1979511/1979515 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 57363 event pairs, 1064 based on Foata normal form. 6/8999 useless extension candidates. Maximal degree in co-relation 101508. Up to 8024 conditions per place. [2024-06-28 03:24:37,049 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 667 selfloop transitions, 173 changer transitions 0/844 dead transitions. [2024-06-28 03:24:37,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 844 transitions, 15682 flow [2024-06-28 03:24:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:24:37,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 03:24:37,051 INFO L175 Difference]: Start difference. First operand has 481 places, 817 transitions, 13237 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:24:37,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 844 transitions, 15682 flow [2024-06-28 03:24:45,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 844 transitions, 15339 flow, removed 107 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:45,782 INFO L231 Difference]: Finished difference. Result has 485 places, 820 transitions, 13301 flow [2024-06-28 03:24:45,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12894, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13301, PETRI_PLACES=485, PETRI_TRANSITIONS=820} [2024-06-28 03:24:45,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-28 03:24:45,782 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 820 transitions, 13301 flow [2024-06-28 03:24:45,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:45,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:45,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:45,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:24:45,783 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:45,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:45,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1932334080, now seen corresponding path program 6 times [2024-06-28 03:24:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:45,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840442369] [2024-06-28 03:24:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:45,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:46,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:46,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840442369] [2024-06-28 03:24:46,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840442369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:46,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:46,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871522669] [2024-06-28 03:24:46,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:46,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:46,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:46,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:46,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:46,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:24:46,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 820 transitions, 13301 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:46,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:46,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:24:46,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:49,597 INFO L124 PetriNetUnfolderBase]: 5753/9024 cut-off events. [2024-06-28 03:24:49,598 INFO L125 PetriNetUnfolderBase]: For 2020640/2020644 co-relation queries the response was YES. [2024-06-28 03:24:49,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102698 conditions, 9024 events. 5753/9024 cut-off events. For 2020640/2020644 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 57455 event pairs, 1066 based on Foata normal form. 6/9029 useless extension candidates. Maximal degree in co-relation 102470. Up to 8049 conditions per place. [2024-06-28 03:24:49,768 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 661 selfloop transitions, 187 changer transitions 0/852 dead transitions. [2024-06-28 03:24:49,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 852 transitions, 16117 flow [2024-06-28 03:24:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:24:49,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 03:24:49,769 INFO L175 Difference]: Start difference. First operand has 485 places, 820 transitions, 13301 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:24:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 852 transitions, 16117 flow [2024-06-28 03:25:01,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 852 transitions, 15719 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:25:01,127 INFO L231 Difference]: Finished difference. Result has 486 places, 826 transitions, 13407 flow [2024-06-28 03:25:01,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12915, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13407, PETRI_PLACES=486, PETRI_TRANSITIONS=826} [2024-06-28 03:25:01,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 444 predicate places. [2024-06-28 03:25:01,127 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 826 transitions, 13407 flow [2024-06-28 03:25:01,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:01,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:01,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:01,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:25:01,128 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:01,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1984735741, now seen corresponding path program 5 times [2024-06-28 03:25:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:01,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502049189] [2024-06-28 03:25:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:01,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:01,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502049189] [2024-06-28 03:25:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502049189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:01,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:01,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:25:01,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512980257] [2024-06-28 03:25:01,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:25:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:25:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:25:02,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 03:25:02,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 826 transitions, 13407 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:02,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:02,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 03:25:02,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:05,304 INFO L124 PetriNetUnfolderBase]: 5905/9238 cut-off events. [2024-06-28 03:25:05,304 INFO L125 PetriNetUnfolderBase]: For 2268332/2268336 co-relation queries the response was YES. [2024-06-28 03:25:05,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107929 conditions, 9238 events. 5905/9238 cut-off events. For 2268332/2268336 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 58749 event pairs, 1095 based on Foata normal form. 12/9249 useless extension candidates. Maximal degree in co-relation 107700. Up to 7627 conditions per place. [2024-06-28 03:25:05,474 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 653 selfloop transitions, 208 changer transitions 0/865 dead transitions. [2024-06-28 03:25:05,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 865 transitions, 16357 flow [2024-06-28 03:25:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:25:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:25:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:25:05,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 03:25:05,475 INFO L175 Difference]: Start difference. First operand has 486 places, 826 transitions, 13407 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:25:05,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 865 transitions, 16357 flow