./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.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/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.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/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.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 03:44:55,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:44:55,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:44:55,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:44:55,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:44:55,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:44:55,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:44:55,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:44:55,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:44:55,623 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:44:55,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:44:55,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:44:55,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:44:55,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:44:55,625 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:44:55,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:44:55,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:44:55,626 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:44:55,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:44:55,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:44:55,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:44:55,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:44:55,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:44:55,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:44:55,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:44:55,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:44:55,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:44:55,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:44:55,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:44:55,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:44:55,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:44:55,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:44:55,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:44:55,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:44:55,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:44:55,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:44:55,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:44:55,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:44:55,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:44:55,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:44:55,632 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:44:55,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:44:55,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:44:55,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:44:55,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:44:55,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:44:55,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:44:55,866 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:44:55,867 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:44:55,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 03:44:56,026 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:44:56,026 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:44:56,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:44:57,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:44:57,220 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:44:57,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:44:57,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a756f80/3596629ecf2846cf8bd1d500e535d147/FLAG0d98c9cd7 [2024-06-28 03:44:57,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a756f80/3596629ecf2846cf8bd1d500e535d147 [2024-06-28 03:44:57,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:44:57,242 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:44:57,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:44:57,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:44:57,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:44:57,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:44:56" (1/2) ... [2024-06-28 03:44:57,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71489279 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:44:57, skipping insertion in model container [2024-06-28 03:44:57,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:44:56" (1/2) ... [2024-06-28 03:44:57,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5eb13493 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:44:57, skipping insertion in model container [2024-06-28 03:44:57,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:44:57" (2/2) ... [2024-06-28 03:44:57,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71489279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57, skipping insertion in model container [2024-06-28 03:44:57,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:44:57" (2/2) ... [2024-06-28 03:44:57,249 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:44:57,318 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:44:57,320 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:44:57,320 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:44:57,320 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:44:57,320 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:44:57,321 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-28 03:44:57,356 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:44:57,643 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:44:57,653 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:44:57,736 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:44:57,761 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:44:57,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57 WrapperNode [2024-06-28 03:44:57,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:44:57,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:44:57,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:44:57,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:44:57,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,805 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 148 [2024-06-28 03:44:57,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:44:57,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:44:57,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:44:57,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:44:57,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,816 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,834 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 03:44:57,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:44:57,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:44:57,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:44:57,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:44:57,849 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (1/1) ... [2024-06-28 03:44:57,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:44:57,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:44:57,912 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 03:44:57,959 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 03:44:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:44:57,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:44:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:44:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:44:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:44:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:44:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:44:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:44:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:44:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:44:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:44:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:44:57,985 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 03:44:58,106 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:44:58,107 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:44:58,405 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:44:58,405 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:44:58,591 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:44:58,592 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:44:58,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:44:58 BoogieIcfgContainer [2024-06-28 03:44:58,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:44:58,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:44:58,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:44:58,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:44:58,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:44:56" (1/4) ... [2024-06-28 03:44:58,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e9afb9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:44:58, skipping insertion in model container [2024-06-28 03:44:58,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:44:57" (2/4) ... [2024-06-28 03:44:58,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e9afb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:44:58, skipping insertion in model container [2024-06-28 03:44:58,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:44:57" (3/4) ... [2024-06-28 03:44:58,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e9afb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:44:58, skipping insertion in model container [2024-06-28 03:44:58,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:44:58" (4/4) ... [2024-06-28 03:44:58,605 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:44:58,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:44:58,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:44:58,624 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:44:58,673 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:44:58,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:44:58,740 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 03:44:58,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:44:58,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:44:58,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:44:58,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 03:44:58,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:44:58,762 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;@6c1d7061, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:44:58,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:44:58,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:44:58,767 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:44:58,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:44:58,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:58,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:44:58,768 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 03:44:58,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash 399192754, now seen corresponding path program 1 times [2024-06-28 03:44:58,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:58,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729684759] [2024-06-28 03:44:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:59,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:59,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729684759] [2024-06-28 03:44:59,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729684759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:59,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:59,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:44:59,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749319756] [2024-06-28 03:44:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:59,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:44:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:44:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:44:59,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 03:44:59,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 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 03:44:59,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:59,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 03:44:59,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:59,832 INFO L124 PetriNetUnfolderBase]: 891/1376 cut-off events. [2024-06-28 03:44:59,833 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-28 03:44:59,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 1376 events. 891/1376 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6697 event pairs, 520 based on Foata normal form. 2/1345 useless extension candidates. Maximal degree in co-relation 2785. Up to 1335 conditions per place. [2024-06-28 03:44:59,845 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 31 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 03:44:59,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 169 flow [2024-06-28 03:44:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:44:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:44:59,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 03:44:59,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-28 03:44:59,856 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 77 transitions. [2024-06-28 03:44:59,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 169 flow [2024-06-28 03:44:59,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:44:59,860 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 03:44:59,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 03:44:59,864 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 03:44:59,864 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 03:44:59,864 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 03:44:59,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:59,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:59,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:44:59,865 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 03:44:59,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1261754706, now seen corresponding path program 1 times [2024-06-28 03:44:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695540325] [2024-06-28 03:44:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:00,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:00,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695540325] [2024-06-28 03:45:00,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695540325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:00,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:00,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:45:00,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770577295] [2024-06-28 03:45:00,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:00,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:45:00,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:00,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:45:00,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:45:00,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 03:45:00,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 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 03:45:00,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:00,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 03:45:00,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:01,237 INFO L124 PetriNetUnfolderBase]: 1131/1733 cut-off events. [2024-06-28 03:45:01,238 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-06-28 03:45:01,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 1733 events. 1131/1733 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8152 event pairs, 589 based on Foata normal form. 6/1728 useless extension candidates. Maximal degree in co-relation 3989. Up to 1639 conditions per place. [2024-06-28 03:45:01,246 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 37 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2024-06-28 03:45:01,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 222 flow [2024-06-28 03:45:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:45:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:45:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-06-28 03:45:01,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-28 03:45:01,248 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 94 transitions. [2024-06-28 03:45:01,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 222 flow [2024-06-28 03:45:01,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:45:01,250 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 121 flow [2024-06-28 03:45:01,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-28 03:45:01,251 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-06-28 03:45:01,251 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 121 flow [2024-06-28 03:45:01,251 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 03:45:01,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:01,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:01,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:45:01,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:01,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1437879967, now seen corresponding path program 1 times [2024-06-28 03:45:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:01,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843725061] [2024-06-28 03:45:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:01,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843725061] [2024-06-28 03:45:01,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843725061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:01,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:01,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:45:01,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095568464] [2024-06-28 03:45:01,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:01,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:45:01,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:01,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:45:01,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:45:02,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:45:02,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 121 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 03:45:02,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:02,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:45:02,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:02,308 INFO L124 PetriNetUnfolderBase]: 888/1393 cut-off events. [2024-06-28 03:45:02,309 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-28 03:45:02,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 1393 events. 888/1393 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6811 event pairs, 408 based on Foata normal form. 4/1393 useless extension candidates. Maximal degree in co-relation 3482. Up to 1326 conditions per place. [2024-06-28 03:45:02,315 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 39 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-28 03:45:02,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 271 flow [2024-06-28 03:45:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:45:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:45:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-28 03:45:02,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-06-28 03:45:02,317 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 121 flow. Second operand 5 states and 99 transitions. [2024-06-28 03:45:02,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 271 flow [2024-06-28 03:45:02,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 254 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:45:02,319 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 170 flow [2024-06-28 03:45:02,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-06-28 03:45:02,319 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-06-28 03:45:02,320 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 170 flow [2024-06-28 03:45:02,320 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 03:45:02,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:02,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:02,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:45:02,320 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 03:45:02,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1624605075, now seen corresponding path program 1 times [2024-06-28 03:45:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:02,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177564351] [2024-06-28 03:45:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:02,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:03,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177564351] [2024-06-28 03:45:03,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177564351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:03,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:03,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:45:03,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089848943] [2024-06-28 03:45:03,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:03,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:45:03,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:03,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:45:03,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:45:03,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:45:03,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:03,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:03,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:45:03,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:03,650 INFO L124 PetriNetUnfolderBase]: 900/1413 cut-off events. [2024-06-28 03:45:03,651 INFO L125 PetriNetUnfolderBase]: For 1545/1545 co-relation queries the response was YES. [2024-06-28 03:45:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 1413 events. 900/1413 cut-off events. For 1545/1545 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6826 event pairs, 378 based on Foata normal form. 8/1417 useless extension candidates. Maximal degree in co-relation 4039. Up to 1308 conditions per place. [2024-06-28 03:45:03,657 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 44 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-28 03:45:03,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 346 flow [2024-06-28 03:45:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 03:45:03,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 03:45:03,659 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 170 flow. Second operand 6 states and 119 transitions. [2024-06-28 03:45:03,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 346 flow [2024-06-28 03:45:03,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 332 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:45:03,661 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 217 flow [2024-06-28 03:45:03,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 03:45:03,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-28 03:45:03,662 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 217 flow [2024-06-28 03:45:03,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:03,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:03,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:03,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:45:03,663 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 03:45:03,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1945152082, now seen corresponding path program 1 times [2024-06-28 03:45:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:03,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829187368] [2024-06-28 03:45:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:03,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:04,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:04,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829187368] [2024-06-28 03:45:04,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829187368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:04,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:04,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:45:04,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305188123] [2024-06-28 03:45:04,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:04,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:45:04,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:04,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:45:04,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:45:04,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:04,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 217 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 03:45:04,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:04,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:04,780 INFO L124 PetriNetUnfolderBase]: 1129/1756 cut-off events. [2024-06-28 03:45:04,780 INFO L125 PetriNetUnfolderBase]: For 2861/2864 co-relation queries the response was YES. [2024-06-28 03:45:04,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1756 events. 1129/1756 cut-off events. For 2861/2864 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8475 event pairs, 435 based on Foata normal form. 2/1751 useless extension candidates. Maximal degree in co-relation 5482. Up to 1627 conditions per place. [2024-06-28 03:45:04,791 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-28 03:45:04,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 391 flow [2024-06-28 03:45:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:45:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:45:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-28 03:45:04,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-28 03:45:04,792 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 217 flow. Second operand 5 states and 98 transitions. [2024-06-28 03:45:04,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 391 flow [2024-06-28 03:45:04,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 360 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:04,796 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 252 flow [2024-06-28 03:45:04,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-06-28 03:45:04,797 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-28 03:45:04,797 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 252 flow [2024-06-28 03:45:04,797 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 03:45:04,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:04,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:04,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:45:04,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:04,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:04,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1707039555, now seen corresponding path program 1 times [2024-06-28 03:45:04,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:04,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839051587] [2024-06-28 03:45:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:04,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:05,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839051587] [2024-06-28 03:45:05,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839051587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:05,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:05,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:45:05,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355710281] [2024-06-28 03:45:05,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:05,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:45:05,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:05,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:45:05,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:45:05,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:05,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:05,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:05,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:05,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:05,715 INFO L124 PetriNetUnfolderBase]: 1330/2018 cut-off events. [2024-06-28 03:45:05,715 INFO L125 PetriNetUnfolderBase]: For 4438/4438 co-relation queries the response was YES. [2024-06-28 03:45:05,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 2018 events. 1330/2018 cut-off events. For 4438/4438 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9397 event pairs, 522 based on Foata normal form. 2/2017 useless extension candidates. Maximal degree in co-relation 6671. Up to 1987 conditions per place. [2024-06-28 03:45:05,724 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 51 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-06-28 03:45:05,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 423 flow [2024-06-28 03:45:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:45:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:45:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-28 03:45:05,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-06-28 03:45:05,726 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 252 flow. Second operand 5 states and 87 transitions. [2024-06-28 03:45:05,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 423 flow [2024-06-28 03:45:05,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 386 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:45:05,729 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 282 flow [2024-06-28 03:45:05,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2024-06-28 03:45:05,730 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 03:45:05,730 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 282 flow [2024-06-28 03:45:05,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:05,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:05,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:05,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:45:05,731 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 03:45:05,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1140823994, now seen corresponding path program 1 times [2024-06-28 03:45:05,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:05,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988763542] [2024-06-28 03:45:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:05,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:06,739 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 03:45:06,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:06,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988763542] [2024-06-28 03:45:06,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988763542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:06,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:06,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:06,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780030398] [2024-06-28 03:45:06,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:06,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:06,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:06,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:06,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 282 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 03:45:06,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:06,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:06,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:07,223 INFO L124 PetriNetUnfolderBase]: 1134/1765 cut-off events. [2024-06-28 03:45:07,223 INFO L125 PetriNetUnfolderBase]: For 3358/3361 co-relation queries the response was YES. [2024-06-28 03:45:07,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5862 conditions, 1765 events. 1134/1765 cut-off events. For 3358/3361 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8522 event pairs, 394 based on Foata normal form. 2/1760 useless extension candidates. Maximal degree in co-relation 5839. Up to 1594 conditions per place. [2024-06-28 03:45:07,234 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 52 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2024-06-28 03:45:07,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 512 flow [2024-06-28 03:45:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-28 03:45:07,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 03:45:07,237 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 282 flow. Second operand 6 states and 117 transitions. [2024-06-28 03:45:07,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 512 flow [2024-06-28 03:45:07,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 506 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 03:45:07,241 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 374 flow [2024-06-28 03:45:07,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-06-28 03:45:07,242 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-28 03:45:07,242 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 374 flow [2024-06-28 03:45:07,243 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 03:45:07,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:07,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:07,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:45:07,243 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 03:45:07,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:07,244 INFO L85 PathProgramCache]: Analyzing trace with hash -500833466, now seen corresponding path program 2 times [2024-06-28 03:45:07,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:07,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352689512] [2024-06-28 03:45:07,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:07,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:08,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:08,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352689512] [2024-06-28 03:45:08,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352689512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:08,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:08,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695423187] [2024-06-28 03:45:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:08,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:08,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:08,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:08,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 374 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 03:45:08,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:08,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:08,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:08,936 INFO L124 PetriNetUnfolderBase]: 1129/1761 cut-off events. [2024-06-28 03:45:08,936 INFO L125 PetriNetUnfolderBase]: For 4659/4665 co-relation queries the response was YES. [2024-06-28 03:45:08,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 1761 events. 1129/1761 cut-off events. For 4659/4665 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8513 event pairs, 387 based on Foata normal form. 6/1762 useless extension candidates. Maximal degree in co-relation 6352. Up to 1611 conditions per place. [2024-06-28 03:45:08,946 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 64 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2024-06-28 03:45:08,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 629 flow [2024-06-28 03:45:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:45:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:45:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:45:08,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:45:08,950 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 374 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:45:08,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 629 flow [2024-06-28 03:45:08,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 584 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:08,954 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 415 flow [2024-06-28 03:45:08,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=415, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-06-28 03:45:08,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-28 03:45:08,955 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 415 flow [2024-06-28 03:45:08,955 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 03:45:08,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:08,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:08,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:45:08,955 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 03:45:08,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:08,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1377636511, now seen corresponding path program 1 times [2024-06-28 03:45:08,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:08,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678011020] [2024-06-28 03:45:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:08,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:10,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:10,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678011020] [2024-06-28 03:45:10,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678011020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:10,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:10,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:45:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349102303] [2024-06-28 03:45:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:10,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:45:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:45:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:45:10,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:10,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 415 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:10,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:10,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:10,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:11,165 INFO L124 PetriNetUnfolderBase]: 1274/2003 cut-off events. [2024-06-28 03:45:11,166 INFO L125 PetriNetUnfolderBase]: For 7737/7737 co-relation queries the response was YES. [2024-06-28 03:45:11,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7699 conditions, 2003 events. 1274/2003 cut-off events. For 7737/7737 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9728 event pairs, 434 based on Foata normal form. 24/2021 useless extension candidates. Maximal degree in co-relation 7671. Up to 1722 conditions per place. [2024-06-28 03:45:11,177 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 71 selfloop transitions, 24 changer transitions 0/102 dead transitions. [2024-06-28 03:45:11,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 749 flow [2024-06-28 03:45:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:45:11,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 03:45:11,178 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 415 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:45:11,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 749 flow [2024-06-28 03:45:11,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 102 transitions, 702 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:11,183 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 485 flow [2024-06-28 03:45:11,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=485, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-28 03:45:11,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-28 03:45:11,184 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 485 flow [2024-06-28 03:45:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:11,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:11,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:11,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:45:11,184 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 03:45:11,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash 977545297, now seen corresponding path program 1 times [2024-06-28 03:45:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:11,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897483584] [2024-06-28 03:45:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:11,990 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 03:45:11,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897483584] [2024-06-28 03:45:11,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897483584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:11,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:11,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332930603] [2024-06-28 03:45:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:11,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:12,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:12,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 485 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 03:45:12,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:12,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:12,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:12,496 INFO L124 PetriNetUnfolderBase]: 1328/2071 cut-off events. [2024-06-28 03:45:12,497 INFO L125 PetriNetUnfolderBase]: For 9014/9017 co-relation queries the response was YES. [2024-06-28 03:45:12,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8353 conditions, 2071 events. 1328/2071 cut-off events. For 9014/9017 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10229 event pairs, 308 based on Foata normal form. 4/2068 useless extension candidates. Maximal degree in co-relation 8323. Up to 1913 conditions per place. [2024-06-28 03:45:12,513 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 70 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-06-28 03:45:12,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 713 flow [2024-06-28 03:45:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 03:45:12,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-28 03:45:12,515 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 485 flow. Second operand 6 states and 113 transitions. [2024-06-28 03:45:12,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 713 flow [2024-06-28 03:45:12,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 655 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:12,524 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 484 flow [2024-06-28 03:45:12,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=484, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-28 03:45:12,526 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-28 03:45:12,526 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 484 flow [2024-06-28 03:45:12,527 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 03:45:12,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:12,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:12,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:45:12,527 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 03:45:12,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash 41270289, now seen corresponding path program 2 times [2024-06-28 03:45:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:12,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179516722] [2024-06-28 03:45:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:13,401 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 03:45:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179516722] [2024-06-28 03:45:13,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179516722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:13,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:13,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320846791] [2024-06-28 03:45:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:13,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:13,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:13,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 484 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 03:45:13,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:13,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:13,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:14,007 INFO L124 PetriNetUnfolderBase]: 1392/2179 cut-off events. [2024-06-28 03:45:14,008 INFO L125 PetriNetUnfolderBase]: For 10606/10608 co-relation queries the response was YES. [2024-06-28 03:45:14,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8955 conditions, 2179 events. 1392/2179 cut-off events. For 10606/10608 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10835 event pairs, 399 based on Foata normal form. 6/2182 useless extension candidates. Maximal degree in co-relation 8924. Up to 2015 conditions per place. [2024-06-28 03:45:14,020 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 87 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-06-28 03:45:14,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 119 transitions, 924 flow [2024-06-28 03:45:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:45:14,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 03:45:14,022 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 484 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:45:14,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 119 transitions, 924 flow [2024-06-28 03:45:14,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 119 transitions, 869 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:14,034 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 656 flow [2024-06-28 03:45:14,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-06-28 03:45:14,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-28 03:45:14,035 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 656 flow [2024-06-28 03:45:14,035 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 03:45:14,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:14,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:14,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:45:14,035 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 03:45:14,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1005801459, now seen corresponding path program 3 times [2024-06-28 03:45:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:14,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983236651] [2024-06-28 03:45:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:14,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:14,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:14,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983236651] [2024-06-28 03:45:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983236651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:14,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:14,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:14,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150256336] [2024-06-28 03:45:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:14,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:14,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 656 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 03:45:14,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:14,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:14,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:15,325 INFO L124 PetriNetUnfolderBase]: 1384/2164 cut-off events. [2024-06-28 03:45:15,325 INFO L125 PetriNetUnfolderBase]: For 12446/12451 co-relation queries the response was YES. [2024-06-28 03:45:15,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 2164 events. 1384/2164 cut-off events. For 12446/12451 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10754 event pairs, 399 based on Foata normal form. 4/2156 useless extension candidates. Maximal degree in co-relation 9244. Up to 1929 conditions per place. [2024-06-28 03:45:15,337 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 72 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2024-06-28 03:45:15,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 108 transitions, 948 flow [2024-06-28 03:45:15,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 03:45:15,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 03:45:15,338 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 656 flow. Second operand 6 states and 115 transitions. [2024-06-28 03:45:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 108 transitions, 948 flow [2024-06-28 03:45:15,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 861 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:15,349 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 672 flow [2024-06-28 03:45:15,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=672, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-06-28 03:45:15,349 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-28 03:45:15,349 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 672 flow [2024-06-28 03:45:15,349 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 03:45:15,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:15,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:15,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:45:15,350 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:15,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1573631842, now seen corresponding path program 1 times [2024-06-28 03:45:15,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:15,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205680470] [2024-06-28 03:45:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:15,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:15,887 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 03:45:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205680470] [2024-06-28 03:45:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205680470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:15,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:15,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:45:15,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873882242] [2024-06-28 03:45:15,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:45:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:15,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:45:15,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:45:15,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:15,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 672 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:15,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:15,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:15,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:16,373 INFO L124 PetriNetUnfolderBase]: 1477/2273 cut-off events. [2024-06-28 03:45:16,373 INFO L125 PetriNetUnfolderBase]: For 14868/14873 co-relation queries the response was YES. [2024-06-28 03:45:16,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 2273 events. 1477/2273 cut-off events. For 14868/14873 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10958 event pairs, 438 based on Foata normal form. 4/2265 useless extension candidates. Maximal degree in co-relation 9920. Up to 2146 conditions per place. [2024-06-28 03:45:16,385 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 76 selfloop transitions, 23 changer transitions 0/103 dead transitions. [2024-06-28 03:45:16,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 103 transitions, 928 flow [2024-06-28 03:45:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:45:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:45:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-28 03:45:16,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-28 03:45:16,387 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 672 flow. Second operand 5 states and 91 transitions. [2024-06-28 03:45:16,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 103 transitions, 928 flow [2024-06-28 03:45:16,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 103 transitions, 847 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:16,400 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 681 flow [2024-06-28 03:45:16,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=681, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-06-28 03:45:16,401 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-28 03:45:16,401 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 681 flow [2024-06-28 03:45:16,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:16,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:16,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:16,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:45:16,401 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 03:45:16,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:16,402 INFO L85 PathProgramCache]: Analyzing trace with hash 517966306, now seen corresponding path program 2 times [2024-06-28 03:45:16,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:16,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710988622] [2024-06-28 03:45:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:16,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:16,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:16,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710988622] [2024-06-28 03:45:16,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710988622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:16,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:16,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:45:16,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996997639] [2024-06-28 03:45:16,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:16,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:45:16,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:45:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:45:17,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:17,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 681 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:17,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:17,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:17,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:17,478 INFO L124 PetriNetUnfolderBase]: 1465/2257 cut-off events. [2024-06-28 03:45:17,478 INFO L125 PetriNetUnfolderBase]: For 14085/14090 co-relation queries the response was YES. [2024-06-28 03:45:17,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9937 conditions, 2257 events. 1465/2257 cut-off events. For 14085/14090 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10879 event pairs, 436 based on Foata normal form. 4/2249 useless extension candidates. Maximal degree in co-relation 9902. Up to 2114 conditions per place. [2024-06-28 03:45:17,491 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 79 selfloop transitions, 26 changer transitions 0/109 dead transitions. [2024-06-28 03:45:17,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 967 flow [2024-06-28 03:45:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:45:17,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:45:17,492 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 681 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:45:17,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 967 flow [2024-06-28 03:45:17,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 911 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 03:45:17,506 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 719 flow [2024-06-28 03:45:17,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=719, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2024-06-28 03:45:17,507 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-28 03:45:17,507 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 719 flow [2024-06-28 03:45:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:17,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:17,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:45:17,508 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:17,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash -219125086, now seen corresponding path program 1 times [2024-06-28 03:45:17,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:17,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685402200] [2024-06-28 03:45:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:18,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685402200] [2024-06-28 03:45:18,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685402200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:18,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:18,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:45:18,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885942553] [2024-06-28 03:45:18,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:18,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:45:18,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:18,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:45:18,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:45:18,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:18,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 719 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:18,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:18,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:18,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:18,392 INFO L124 PetriNetUnfolderBase]: 1483/2280 cut-off events. [2024-06-28 03:45:18,393 INFO L125 PetriNetUnfolderBase]: For 14330/14332 co-relation queries the response was YES. [2024-06-28 03:45:18,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10144 conditions, 2280 events. 1483/2280 cut-off events. For 14330/14332 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10984 event pairs, 437 based on Foata normal form. 2/2279 useless extension candidates. Maximal degree in co-relation 10108. Up to 2207 conditions per place. [2024-06-28 03:45:18,404 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 103 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-06-28 03:45:18,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 122 transitions, 1094 flow [2024-06-28 03:45:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 03:45:18,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-28 03:45:18,406 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 719 flow. Second operand 6 states and 107 transitions. [2024-06-28 03:45:18,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 122 transitions, 1094 flow [2024-06-28 03:45:18,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 122 transitions, 1025 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:18,418 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 790 flow [2024-06-28 03:45:18,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=790, PETRI_PLACES=87, PETRI_TRANSITIONS=107} [2024-06-28 03:45:18,419 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-28 03:45:18,419 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 790 flow [2024-06-28 03:45:18,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:18,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:18,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:18,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:45:18,420 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:18,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash 846611204, now seen corresponding path program 2 times [2024-06-28 03:45:18,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737629700] [2024-06-28 03:45:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:18,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:18,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737629700] [2024-06-28 03:45:18,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737629700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:18,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:18,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:45:18,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413466130] [2024-06-28 03:45:18,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:18,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:45:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:45:18,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:45:19,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:19,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 790 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:19,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:19,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:19,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:19,415 INFO L124 PetriNetUnfolderBase]: 1477/2274 cut-off events. [2024-06-28 03:45:19,416 INFO L125 PetriNetUnfolderBase]: For 15933/15935 co-relation queries the response was YES. [2024-06-28 03:45:19,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10577 conditions, 2274 events. 1477/2274 cut-off events. For 15933/15935 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10941 event pairs, 433 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 10538. Up to 2217 conditions per place. [2024-06-28 03:45:19,430 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 103 selfloop transitions, 11 changer transitions 0/118 dead transitions. [2024-06-28 03:45:19,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 1055 flow [2024-06-28 03:45:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 03:45:19,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:45:19,431 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 790 flow. Second operand 6 states and 100 transitions. [2024-06-28 03:45:19,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 1055 flow [2024-06-28 03:45:19,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 118 transitions, 1029 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 03:45:19,456 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 801 flow [2024-06-28 03:45:19,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=801, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2024-06-28 03:45:19,457 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-06-28 03:45:19,457 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 801 flow [2024-06-28 03:45:19,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:19,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:19,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:19,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:45:19,463 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:19,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash -212449918, now seen corresponding path program 1 times [2024-06-28 03:45:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:19,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525888755] [2024-06-28 03:45:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:20,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:20,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525888755] [2024-06-28 03:45:20,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525888755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:20,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:20,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:45:20,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014267881] [2024-06-28 03:45:20,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:20,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:45:20,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:20,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:45:20,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:45:20,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:20,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 801 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 03:45:20,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:20,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:20,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:20,680 INFO L124 PetriNetUnfolderBase]: 1472/2265 cut-off events. [2024-06-28 03:45:20,681 INFO L125 PetriNetUnfolderBase]: For 17283/17285 co-relation queries the response was YES. [2024-06-28 03:45:20,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10677 conditions, 2265 events. 1472/2265 cut-off events. For 17283/17285 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10880 event pairs, 434 based on Foata normal form. 2/2264 useless extension candidates. Maximal degree in co-relation 10635. Up to 2207 conditions per place. [2024-06-28 03:45:20,693 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 104 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2024-06-28 03:45:20,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 120 transitions, 1077 flow [2024-06-28 03:45:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 03:45:20,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:45:20,694 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 801 flow. Second operand 6 states and 100 transitions. [2024-06-28 03:45:20,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 120 transitions, 1077 flow [2024-06-28 03:45:20,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 1055 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:20,711 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 828 flow [2024-06-28 03:45:20,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=828, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2024-06-28 03:45:20,712 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-28 03:45:20,712 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 828 flow [2024-06-28 03:45:20,712 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 03:45:20,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:20,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:20,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:45:20,713 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 03:45:20,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 239134077, now seen corresponding path program 1 times [2024-06-28 03:45:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946229280] [2024-06-28 03:45:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:21,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:21,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946229280] [2024-06-28 03:45:21,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946229280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:21,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:21,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:45:21,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497414631] [2024-06-28 03:45:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:21,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:45:21,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:45:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:45:21,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:21,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 828 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:21,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:21,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:21,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:22,391 INFO L124 PetriNetUnfolderBase]: 1416/2220 cut-off events. [2024-06-28 03:45:22,392 INFO L125 PetriNetUnfolderBase]: For 19188/19193 co-relation queries the response was YES. [2024-06-28 03:45:22,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10759 conditions, 2220 events. 1416/2220 cut-off events. For 19188/19193 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11025 event pairs, 278 based on Foata normal form. 4/2212 useless extension candidates. Maximal degree in co-relation 10717. Up to 1991 conditions per place. [2024-06-28 03:45:22,409 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 105 selfloop transitions, 23 changer transitions 0/134 dead transitions. [2024-06-28 03:45:22,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 1174 flow [2024-06-28 03:45:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:45:22,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:45:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 03:45:22,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 03:45:22,411 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 828 flow. Second operand 7 states and 130 transitions. [2024-06-28 03:45:22,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 1174 flow [2024-06-28 03:45:22,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 134 transitions, 1141 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:22,431 INFO L231 Difference]: Finished difference. Result has 97 places, 112 transitions, 878 flow [2024-06-28 03:45:22,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=97, PETRI_TRANSITIONS=112} [2024-06-28 03:45:22,432 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-28 03:45:22,432 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 112 transitions, 878 flow [2024-06-28 03:45:22,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:22,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:22,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:22,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:45:22,432 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 03:45:22,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:22,433 INFO L85 PathProgramCache]: Analyzing trace with hash 948822769, now seen corresponding path program 2 times [2024-06-28 03:45:22,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:22,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204642608] [2024-06-28 03:45:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:22,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:23,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:23,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204642608] [2024-06-28 03:45:23,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204642608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:23,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:23,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:45:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126661836] [2024-06-28 03:45:23,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:23,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:45:23,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:45:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:45:23,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:23,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 112 transitions, 878 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:23,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:23,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:23,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:24,069 INFO L124 PetriNetUnfolderBase]: 1499/2362 cut-off events. [2024-06-28 03:45:24,069 INFO L125 PetriNetUnfolderBase]: For 24166/24171 co-relation queries the response was YES. [2024-06-28 03:45:24,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11785 conditions, 2362 events. 1499/2362 cut-off events. For 24166/24171 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11897 event pairs, 366 based on Foata normal form. 16/2366 useless extension candidates. Maximal degree in co-relation 11742. Up to 2013 conditions per place. [2024-06-28 03:45:24,082 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 99 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-28 03:45:24,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 1248 flow [2024-06-28 03:45:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:45:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:45:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:45:24,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-28 03:45:24,085 INFO L175 Difference]: Start difference. First operand has 97 places, 112 transitions, 878 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:45:24,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 138 transitions, 1248 flow [2024-06-28 03:45:24,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 1183 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:24,108 INFO L231 Difference]: Finished difference. Result has 99 places, 113 transitions, 910 flow [2024-06-28 03:45:24,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=910, PETRI_PLACES=99, PETRI_TRANSITIONS=113} [2024-06-28 03:45:24,108 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-28 03:45:24,109 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 113 transitions, 910 flow [2024-06-28 03:45:24,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:24,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:24,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:24,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:45:24,109 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:24,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2026511123, now seen corresponding path program 3 times [2024-06-28 03:45:24,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:24,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771832904] [2024-06-28 03:45:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:24,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:25,199 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 03:45:25,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:25,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771832904] [2024-06-28 03:45:25,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771832904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:25,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:25,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:45:25,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445849510] [2024-06-28 03:45:25,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:25,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:45:25,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:25,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:45:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:45:25,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:25,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 113 transitions, 910 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:25,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:25,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:25,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:25,752 INFO L124 PetriNetUnfolderBase]: 1519/2402 cut-off events. [2024-06-28 03:45:25,752 INFO L125 PetriNetUnfolderBase]: For 26764/26769 co-relation queries the response was YES. [2024-06-28 03:45:25,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12202 conditions, 2402 events. 1519/2402 cut-off events. For 26764/26769 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12228 event pairs, 376 based on Foata normal form. 8/2398 useless extension candidates. Maximal degree in co-relation 12158. Up to 2109 conditions per place. [2024-06-28 03:45:25,766 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 91 selfloop transitions, 40 changer transitions 0/137 dead transitions. [2024-06-28 03:45:25,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 137 transitions, 1280 flow [2024-06-28 03:45:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:45:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:45:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:45:25,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-28 03:45:25,768 INFO L175 Difference]: Start difference. First operand has 99 places, 113 transitions, 910 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:45:25,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 137 transitions, 1280 flow [2024-06-28 03:45:25,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 137 transitions, 1205 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:25,788 INFO L231 Difference]: Finished difference. Result has 101 places, 115 transitions, 960 flow [2024-06-28 03:45:25,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=960, PETRI_PLACES=101, PETRI_TRANSITIONS=115} [2024-06-28 03:45:25,788 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-28 03:45:25,788 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 115 transitions, 960 flow [2024-06-28 03:45:25,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:25,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:25,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:25,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:45:25,789 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 03:45:25,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2026517075, now seen corresponding path program 1 times [2024-06-28 03:45:25,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:25,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445663456] [2024-06-28 03:45:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:25,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:27,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:27,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445663456] [2024-06-28 03:45:27,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445663456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:27,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:27,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419739541] [2024-06-28 03:45:27,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:27,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:27,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:27,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 115 transitions, 960 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 03:45:27,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:27,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:27,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:27,800 INFO L124 PetriNetUnfolderBase]: 1626/2519 cut-off events. [2024-06-28 03:45:27,801 INFO L125 PetriNetUnfolderBase]: For 28859/28864 co-relation queries the response was YES. [2024-06-28 03:45:27,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12829 conditions, 2519 events. 1626/2519 cut-off events. For 28859/28864 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12387 event pairs, 402 based on Foata normal form. 2/2509 useless extension candidates. Maximal degree in co-relation 12784. Up to 2229 conditions per place. [2024-06-28 03:45:27,815 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 95 selfloop transitions, 49 changer transitions 0/148 dead transitions. [2024-06-28 03:45:27,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 148 transitions, 1417 flow [2024-06-28 03:45:27,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:45:27,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:45:27,817 INFO L175 Difference]: Start difference. First operand has 101 places, 115 transitions, 960 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:45:27,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 148 transitions, 1417 flow [2024-06-28 03:45:27,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 148 transitions, 1311 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:27,845 INFO L231 Difference]: Finished difference. Result has 105 places, 121 transitions, 1051 flow [2024-06-28 03:45:27,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1051, PETRI_PLACES=105, PETRI_TRANSITIONS=121} [2024-06-28 03:45:27,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2024-06-28 03:45:27,845 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 121 transitions, 1051 flow [2024-06-28 03:45:27,846 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 03:45:27,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:27,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:45:27,846 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 03:45:27,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2110294139, now seen corresponding path program 4 times [2024-06-28 03:45:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005490354] [2024-06-28 03:45:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:27,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:29,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:29,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005490354] [2024-06-28 03:45:29,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005490354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:29,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:29,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:45:29,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349149950] [2024-06-28 03:45:29,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:29,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:45:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:29,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:45:29,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:45:29,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:29,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 121 transitions, 1051 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:29,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:29,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:29,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:29,641 INFO L124 PetriNetUnfolderBase]: 1567/2495 cut-off events. [2024-06-28 03:45:29,641 INFO L125 PetriNetUnfolderBase]: For 34944/34956 co-relation queries the response was YES. [2024-06-28 03:45:29,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13368 conditions, 2495 events. 1567/2495 cut-off events. For 34944/34956 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12923 event pairs, 368 based on Foata normal form. 34/2517 useless extension candidates. Maximal degree in co-relation 13321. Up to 2098 conditions per place. [2024-06-28 03:45:29,657 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 119 selfloop transitions, 36 changer transitions 0/162 dead transitions. [2024-06-28 03:45:29,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 1695 flow [2024-06-28 03:45:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:45:29,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-28 03:45:29,658 INFO L175 Difference]: Start difference. First operand has 105 places, 121 transitions, 1051 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:45:29,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 1695 flow [2024-06-28 03:45:29,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 162 transitions, 1574 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:29,690 INFO L231 Difference]: Finished difference. Result has 110 places, 129 transitions, 1194 flow [2024-06-28 03:45:29,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=110, PETRI_TRANSITIONS=129} [2024-06-28 03:45:29,690 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-28 03:45:29,690 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 129 transitions, 1194 flow [2024-06-28 03:45:29,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:29,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:29,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:29,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:45:29,691 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 03:45:29,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash 437399559, now seen corresponding path program 2 times [2024-06-28 03:45:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156756163] [2024-06-28 03:45:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:29,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:31,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:31,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156756163] [2024-06-28 03:45:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156756163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:31,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:31,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:31,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481132383] [2024-06-28 03:45:31,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:31,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:31,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:31,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:31,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:31,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 129 transitions, 1194 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 03:45:31,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:31,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:31,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:32,367 INFO L124 PetriNetUnfolderBase]: 1701/2644 cut-off events. [2024-06-28 03:45:32,367 INFO L125 PetriNetUnfolderBase]: For 40683/40695 co-relation queries the response was YES. [2024-06-28 03:45:32,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14799 conditions, 2644 events. 1701/2644 cut-off events. For 40683/40695 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13306 event pairs, 399 based on Foata normal form. 10/2647 useless extension candidates. Maximal degree in co-relation 14749. Up to 2433 conditions per place. [2024-06-28 03:45:32,383 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 132 selfloop transitions, 34 changer transitions 0/170 dead transitions. [2024-06-28 03:45:32,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 170 transitions, 1747 flow [2024-06-28 03:45:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:45:32,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:45:32,384 INFO L175 Difference]: Start difference. First operand has 110 places, 129 transitions, 1194 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:45:32,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 170 transitions, 1747 flow [2024-06-28 03:45:32,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 170 transitions, 1668 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 03:45:32,426 INFO L231 Difference]: Finished difference. Result has 117 places, 138 transitions, 1310 flow [2024-06-28 03:45:32,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1310, PETRI_PLACES=117, PETRI_TRANSITIONS=138} [2024-06-28 03:45:32,427 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-28 03:45:32,427 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 138 transitions, 1310 flow [2024-06-28 03:45:32,427 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 03:45:32,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:32,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:45:32,428 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 03:45:32,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2110288187, now seen corresponding path program 3 times [2024-06-28 03:45:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519553559] [2024-06-28 03:45:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:33,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:33,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519553559] [2024-06-28 03:45:33,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519553559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:33,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:33,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:33,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086207571] [2024-06-28 03:45:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:33,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:33,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:33,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:33,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:33,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:33,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 138 transitions, 1310 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 03:45:33,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:33,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:33,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:34,950 INFO L124 PetriNetUnfolderBase]: 1839/2863 cut-off events. [2024-06-28 03:45:34,950 INFO L125 PetriNetUnfolderBase]: For 44267/44267 co-relation queries the response was YES. [2024-06-28 03:45:34,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16364 conditions, 2863 events. 1839/2863 cut-off events. For 44267/44267 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14510 event pairs, 400 based on Foata normal form. 2/2860 useless extension candidates. Maximal degree in co-relation 16311. Up to 2657 conditions per place. [2024-06-28 03:45:34,970 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 160 selfloop transitions, 47 changer transitions 0/211 dead transitions. [2024-06-28 03:45:34,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 211 transitions, 2300 flow [2024-06-28 03:45:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:45:34,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:45:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 216 transitions. [2024-06-28 03:45:34,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-28 03:45:34,971 INFO L175 Difference]: Start difference. First operand has 117 places, 138 transitions, 1310 flow. Second operand 13 states and 216 transitions. [2024-06-28 03:45:34,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 211 transitions, 2300 flow [2024-06-28 03:45:35,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 211 transitions, 2176 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:35,041 INFO L231 Difference]: Finished difference. Result has 133 places, 175 transitions, 1840 flow [2024-06-28 03:45:35,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1840, PETRI_PLACES=133, PETRI_TRANSITIONS=175} [2024-06-28 03:45:35,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-28 03:45:35,042 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 175 transitions, 1840 flow [2024-06-28 03:45:35,042 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 03:45:35,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:35,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:35,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:45:35,043 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 03:45:35,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash 792548903, now seen corresponding path program 4 times [2024-06-28 03:45:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855406645] [2024-06-28 03:45:35,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:35,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:36,398 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 03:45:36,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:36,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855406645] [2024-06-28 03:45:36,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855406645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:36,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506459263] [2024-06-28 03:45:36,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:36,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:36,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:36,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:36,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:36,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:36,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 175 transitions, 1840 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 03:45:36,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:36,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:36,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:37,278 INFO L124 PetriNetUnfolderBase]: 1905/2972 cut-off events. [2024-06-28 03:45:37,278 INFO L125 PetriNetUnfolderBase]: For 49196/49199 co-relation queries the response was YES. [2024-06-28 03:45:37,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17568 conditions, 2972 events. 1905/2972 cut-off events. For 49196/49199 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15155 event pairs, 401 based on Foata normal form. 4/2969 useless extension candidates. Maximal degree in co-relation 17507. Up to 2590 conditions per place. [2024-06-28 03:45:37,307 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 150 selfloop transitions, 72 changer transitions 0/226 dead transitions. [2024-06-28 03:45:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 226 transitions, 2669 flow [2024-06-28 03:45:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 03:45:37,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-28 03:45:37,308 INFO L175 Difference]: Start difference. First operand has 133 places, 175 transitions, 1840 flow. Second operand 10 states and 178 transitions. [2024-06-28 03:45:37,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 226 transitions, 2669 flow [2024-06-28 03:45:37,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 226 transitions, 2578 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 03:45:37,393 INFO L231 Difference]: Finished difference. Result has 144 places, 193 transitions, 2215 flow [2024-06-28 03:45:37,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2215, PETRI_PLACES=144, PETRI_TRANSITIONS=193} [2024-06-28 03:45:37,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 03:45:37,394 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 193 transitions, 2215 flow [2024-06-28 03:45:37,394 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 03:45:37,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:37,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:37,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:45:37,395 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 03:45:37,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1977419451, now seen corresponding path program 5 times [2024-06-28 03:45:37,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:37,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755011800] [2024-06-28 03:45:37,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:37,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:38,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:38,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755011800] [2024-06-28 03:45:38,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755011800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:38,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:38,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:38,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830178292] [2024-06-28 03:45:38,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:38,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:38,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:38,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:38,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:39,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:39,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 193 transitions, 2215 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 03:45:39,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:39,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:39,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:39,993 INFO L124 PetriNetUnfolderBase]: 2015/3147 cut-off events. [2024-06-28 03:45:39,994 INFO L125 PetriNetUnfolderBase]: For 55405/55408 co-relation queries the response was YES. [2024-06-28 03:45:40,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19512 conditions, 3147 events. 2015/3147 cut-off events. For 55405/55408 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16218 event pairs, 406 based on Foata normal form. 4/3144 useless extension candidates. Maximal degree in co-relation 19446. Up to 2877 conditions per place. [2024-06-28 03:45:40,019 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 192 selfloop transitions, 53 changer transitions 0/249 dead transitions. [2024-06-28 03:45:40,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 249 transitions, 3226 flow [2024-06-28 03:45:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 03:45:40,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-28 03:45:40,021 INFO L175 Difference]: Start difference. First operand has 144 places, 193 transitions, 2215 flow. Second operand 11 states and 188 transitions. [2024-06-28 03:45:40,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 249 transitions, 3226 flow [2024-06-28 03:45:40,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 249 transitions, 3045 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 03:45:40,197 INFO L231 Difference]: Finished difference. Result has 155 places, 215 transitions, 2586 flow [2024-06-28 03:45:40,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2586, PETRI_PLACES=155, PETRI_TRANSITIONS=215} [2024-06-28 03:45:40,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-28 03:45:40,198 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 215 transitions, 2586 flow [2024-06-28 03:45:40,198 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 03:45:40,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:40,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:40,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:45:40,198 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 03:45:40,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash -264592507, now seen corresponding path program 6 times [2024-06-28 03:45:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:40,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025636770] [2024-06-28 03:45:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:40,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:41,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:41,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025636770] [2024-06-28 03:45:41,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025636770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:41,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:41,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:41,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385540583] [2024-06-28 03:45:41,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:41,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:41,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:41,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:41,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:41,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:41,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 215 transitions, 2586 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 03:45:41,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:41,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:41,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:42,471 INFO L124 PetriNetUnfolderBase]: 2010/3140 cut-off events. [2024-06-28 03:45:42,472 INFO L125 PetriNetUnfolderBase]: For 58941/58944 co-relation queries the response was YES. [2024-06-28 03:45:42,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19463 conditions, 3140 events. 2010/3140 cut-off events. For 58941/58944 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16207 event pairs, 406 based on Foata normal form. 4/3137 useless extension candidates. Maximal degree in co-relation 19393. Up to 2640 conditions per place. [2024-06-28 03:45:42,497 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 134 selfloop transitions, 105 changer transitions 0/243 dead transitions. [2024-06-28 03:45:42,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 243 transitions, 3170 flow [2024-06-28 03:45:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:45:42,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:45:42,498 INFO L175 Difference]: Start difference. First operand has 155 places, 215 transitions, 2586 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:45:42,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 243 transitions, 3170 flow [2024-06-28 03:45:42,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 243 transitions, 2923 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:42,621 INFO L231 Difference]: Finished difference. Result has 158 places, 215 transitions, 2569 flow [2024-06-28 03:45:42,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2569, PETRI_PLACES=158, PETRI_TRANSITIONS=215} [2024-06-28 03:45:42,622 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-28 03:45:42,622 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 215 transitions, 2569 flow [2024-06-28 03:45:42,622 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 03:45:42,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:42,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:42,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:45:42,622 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 03:45:42,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:42,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1573709370, now seen corresponding path program 1 times [2024-06-28 03:45:42,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:42,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459091048] [2024-06-28 03:45:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:42,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:43,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459091048] [2024-06-28 03:45:43,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459091048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:43,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:43,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:45:43,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761031947] [2024-06-28 03:45:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:45:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:45:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:45:43,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:43,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 215 transitions, 2569 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 03:45:43,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:43,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:43,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:44,049 INFO L124 PetriNetUnfolderBase]: 2028/3160 cut-off events. [2024-06-28 03:45:44,049 INFO L125 PetriNetUnfolderBase]: For 61886/61886 co-relation queries the response was YES. [2024-06-28 03:45:44,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19757 conditions, 3160 events. 2028/3160 cut-off events. For 61886/61886 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16249 event pairs, 449 based on Foata normal form. 2/3159 useless extension candidates. Maximal degree in co-relation 19686. Up to 3010 conditions per place. [2024-06-28 03:45:44,071 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 214 selfloop transitions, 25 changer transitions 0/243 dead transitions. [2024-06-28 03:45:44,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 243 transitions, 3248 flow [2024-06-28 03:45:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:45:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:45:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:45:44,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 03:45:44,072 INFO L175 Difference]: Start difference. First operand has 158 places, 215 transitions, 2569 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:45:44,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 243 transitions, 3248 flow [2024-06-28 03:45:44,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 243 transitions, 2929 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:44,190 INFO L231 Difference]: Finished difference. Result has 158 places, 224 transitions, 2420 flow [2024-06-28 03:45:44,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2420, PETRI_PLACES=158, PETRI_TRANSITIONS=224} [2024-06-28 03:45:44,190 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-28 03:45:44,190 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 224 transitions, 2420 flow [2024-06-28 03:45:44,191 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 03:45:44,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:44,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:44,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:45:44,191 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:44,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:44,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1573559640, now seen corresponding path program 2 times [2024-06-28 03:45:44,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:44,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391250392] [2024-06-28 03:45:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:44,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:44,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:44,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391250392] [2024-06-28 03:45:44,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391250392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:44,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:44,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316769416] [2024-06-28 03:45:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:44,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:44,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:44,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:44,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:45,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:45,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 224 transitions, 2420 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 03:45:45,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:45,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:45,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:45,532 INFO L124 PetriNetUnfolderBase]: 2038/3174 cut-off events. [2024-06-28 03:45:45,532 INFO L125 PetriNetUnfolderBase]: For 53869/53869 co-relation queries the response was YES. [2024-06-28 03:45:45,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19362 conditions, 3174 events. 2038/3174 cut-off events. For 53869/53869 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16323 event pairs, 450 based on Foata normal form. 2/3173 useless extension candidates. Maximal degree in co-relation 19289. Up to 3046 conditions per place. [2024-06-28 03:45:45,560 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 218 selfloop transitions, 20 changer transitions 0/242 dead transitions. [2024-06-28 03:45:45,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 242 transitions, 2979 flow [2024-06-28 03:45:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:45:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:45:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:45:45,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:45:45,561 INFO L175 Difference]: Start difference. First operand has 158 places, 224 transitions, 2420 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:45:45,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 242 transitions, 2979 flow [2024-06-28 03:45:45,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 242 transitions, 2926 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 03:45:45,662 INFO L231 Difference]: Finished difference. Result has 162 places, 227 transitions, 2452 flow [2024-06-28 03:45:45,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2452, PETRI_PLACES=162, PETRI_TRANSITIONS=227} [2024-06-28 03:45:45,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-28 03:45:45,663 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 227 transitions, 2452 flow [2024-06-28 03:45:45,663 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 03:45:45,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:45,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:45,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:45:45,663 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:45,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash 501956630, now seen corresponding path program 3 times [2024-06-28 03:45:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:45,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663294916] [2024-06-28 03:45:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:45,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:46,319 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 03:45:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663294916] [2024-06-28 03:45:46,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663294916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:46,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:46,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:45:46,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600263695] [2024-06-28 03:45:46,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:46,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:45:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:46,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:45:46,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:45:46,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:46,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 227 transitions, 2452 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 03:45:46,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:46,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:46,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:46,919 INFO L124 PetriNetUnfolderBase]: 2032/3166 cut-off events. [2024-06-28 03:45:46,919 INFO L125 PetriNetUnfolderBase]: For 56352/56352 co-relation queries the response was YES. [2024-06-28 03:45:46,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19434 conditions, 3166 events. 2032/3166 cut-off events. For 56352/56352 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16255 event pairs, 450 based on Foata normal form. 2/3165 useless extension candidates. Maximal degree in co-relation 19359. Up to 3053 conditions per place. [2024-06-28 03:45:46,945 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 219 selfloop transitions, 15 changer transitions 0/238 dead transitions. [2024-06-28 03:45:46,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 238 transitions, 2954 flow [2024-06-28 03:45:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:45:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:45:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 03:45:46,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 03:45:46,947 INFO L175 Difference]: Start difference. First operand has 162 places, 227 transitions, 2452 flow. Second operand 7 states and 114 transitions. [2024-06-28 03:45:46,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 238 transitions, 2954 flow [2024-06-28 03:45:47,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 238 transitions, 2900 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:47,059 INFO L231 Difference]: Finished difference. Result has 164 places, 227 transitions, 2434 flow [2024-06-28 03:45:47,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2398, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2434, PETRI_PLACES=164, PETRI_TRANSITIONS=227} [2024-06-28 03:45:47,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-28 03:45:47,061 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 227 transitions, 2434 flow [2024-06-28 03:45:47,061 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 03:45:47,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:47,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:47,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:45:47,061 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:47,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash -577402083, now seen corresponding path program 1 times [2024-06-28 03:45:47,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:47,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395359376] [2024-06-28 03:45:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:47,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:47,725 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 03:45:47,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395359376] [2024-06-28 03:45:47,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395359376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:47,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:47,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:45:47,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605175650] [2024-06-28 03:45:47,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:47,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:45:47,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:45:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:45:47,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:47,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 227 transitions, 2434 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 03:45:47,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:47,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:47,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:48,308 INFO L124 PetriNetUnfolderBase]: 2029/3162 cut-off events. [2024-06-28 03:45:48,308 INFO L125 PetriNetUnfolderBase]: For 58999/58999 co-relation queries the response was YES. [2024-06-28 03:45:48,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19493 conditions, 3162 events. 2029/3162 cut-off events. For 58999/58999 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16250 event pairs, 449 based on Foata normal form. 1/3160 useless extension candidates. Maximal degree in co-relation 19417. Up to 3051 conditions per place. [2024-06-28 03:45:48,333 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 218 selfloop transitions, 17 changer transitions 0/239 dead transitions. [2024-06-28 03:45:48,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 239 transitions, 2964 flow [2024-06-28 03:45:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 03:45:48,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 03:45:48,335 INFO L175 Difference]: Start difference. First operand has 164 places, 227 transitions, 2434 flow. Second operand 6 states and 101 transitions. [2024-06-28 03:45:48,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 239 transitions, 2964 flow [2024-06-28 03:45:48,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 239 transitions, 2926 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:48,443 INFO L231 Difference]: Finished difference. Result has 165 places, 230 transitions, 2478 flow [2024-06-28 03:45:48,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2478, PETRI_PLACES=165, PETRI_TRANSITIONS=230} [2024-06-28 03:45:48,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-28 03:45:48,444 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 230 transitions, 2478 flow [2024-06-28 03:45:48,444 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 03:45:48,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:48,445 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 03:45:48,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:45:48,445 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 03:45:48,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:48,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1573529872, now seen corresponding path program 1 times [2024-06-28 03:45:48,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:48,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455441385] [2024-06-28 03:45:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:48,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:49,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455441385] [2024-06-28 03:45:49,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455441385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:49,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:49,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:49,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39109344] [2024-06-28 03:45:49,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:49,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:49,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:49,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:49,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:49,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 230 transitions, 2478 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:49,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:49,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:49,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:50,607 INFO L124 PetriNetUnfolderBase]: 2104/3301 cut-off events. [2024-06-28 03:45:50,607 INFO L125 PetriNetUnfolderBase]: For 66417/66417 co-relation queries the response was YES. [2024-06-28 03:45:50,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20536 conditions, 3301 events. 2104/3301 cut-off events. For 66417/66417 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17245 event pairs, 382 based on Foata normal form. 16/3307 useless extension candidates. Maximal degree in co-relation 20459. Up to 2517 conditions per place. [2024-06-28 03:45:50,631 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 175 selfloop transitions, 83 changer transitions 0/262 dead transitions. [2024-06-28 03:45:50,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 262 transitions, 3182 flow [2024-06-28 03:45:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:45:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:45:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:45:50,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:45:50,633 INFO L175 Difference]: Start difference. First operand has 165 places, 230 transitions, 2478 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:45:50,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 262 transitions, 3182 flow [2024-06-28 03:45:50,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 262 transitions, 3134 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:50,731 INFO L231 Difference]: Finished difference. Result has 168 places, 232 transitions, 2650 flow [2024-06-28 03:45:50,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2650, PETRI_PLACES=168, PETRI_TRANSITIONS=232} [2024-06-28 03:45:50,732 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-28 03:45:50,733 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 232 transitions, 2650 flow [2024-06-28 03:45:50,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:50,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:50,733 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 03:45:50,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:45:50,733 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:50,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -459714621, now seen corresponding path program 1 times [2024-06-28 03:45:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:50,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595382452] [2024-06-28 03:45:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:50,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:51,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:51,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595382452] [2024-06-28 03:45:51,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595382452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:51,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:51,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:45:51,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903771866] [2024-06-28 03:45:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:51,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:45:51,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:51,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:45:51,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:45:51,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:51,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 232 transitions, 2650 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 03:45:51,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:51,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:51,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:52,082 INFO L124 PetriNetUnfolderBase]: 2156/3364 cut-off events. [2024-06-28 03:45:52,083 INFO L125 PetriNetUnfolderBase]: For 68447/68450 co-relation queries the response was YES. [2024-06-28 03:45:52,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21540 conditions, 3364 events. 2156/3364 cut-off events. For 68447/68450 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17589 event pairs, 416 based on Foata normal form. 6/3363 useless extension candidates. Maximal degree in co-relation 21463. Up to 3114 conditions per place. [2024-06-28 03:45:52,109 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 208 selfloop transitions, 47 changer transitions 0/259 dead transitions. [2024-06-28 03:45:52,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 259 transitions, 3398 flow [2024-06-28 03:45:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:45:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:45:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:45:52,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 03:45:52,111 INFO L175 Difference]: Start difference. First operand has 168 places, 232 transitions, 2650 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:45:52,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 259 transitions, 3398 flow [2024-06-28 03:45:52,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 259 transitions, 3232 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:52,224 INFO L231 Difference]: Finished difference. Result has 170 places, 241 transitions, 2725 flow [2024-06-28 03:45:52,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2725, PETRI_PLACES=170, PETRI_TRANSITIONS=241} [2024-06-28 03:45:52,225 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-28 03:45:52,225 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 241 transitions, 2725 flow [2024-06-28 03:45:52,225 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 03:45:52,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:52,225 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 03:45:52,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:45:52,226 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:45:52,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash 431747841, now seen corresponding path program 2 times [2024-06-28 03:45:52,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:52,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359595705] [2024-06-28 03:45:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:52,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:52,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:52,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359595705] [2024-06-28 03:45:52,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359595705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:52,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:52,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:45:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270610554] [2024-06-28 03:45:52,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:52,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:45:52,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:45:52,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:45:52,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:52,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 241 transitions, 2725 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 03:45:52,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:52,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:52,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:53,469 INFO L124 PetriNetUnfolderBase]: 2144/3360 cut-off events. [2024-06-28 03:45:53,469 INFO L125 PetriNetUnfolderBase]: For 71048/71051 co-relation queries the response was YES. [2024-06-28 03:45:53,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21727 conditions, 3360 events. 2144/3360 cut-off events. For 71048/71051 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17627 event pairs, 418 based on Foata normal form. 6/3359 useless extension candidates. Maximal degree in co-relation 21648. Up to 3195 conditions per place. [2024-06-28 03:45:53,497 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 222 selfloop transitions, 26 changer transitions 0/252 dead transitions. [2024-06-28 03:45:53,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 252 transitions, 3269 flow [2024-06-28 03:45:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:45:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:45:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 03:45:53,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 03:45:53,498 INFO L175 Difference]: Start difference. First operand has 170 places, 241 transitions, 2725 flow. Second operand 6 states and 104 transitions. [2024-06-28 03:45:53,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 252 transitions, 3269 flow [2024-06-28 03:45:53,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 252 transitions, 3184 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 03:45:53,626 INFO L231 Difference]: Finished difference. Result has 173 places, 241 transitions, 2702 flow [2024-06-28 03:45:53,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2702, PETRI_PLACES=173, PETRI_TRANSITIONS=241} [2024-06-28 03:45:53,626 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-28 03:45:53,626 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 241 transitions, 2702 flow [2024-06-28 03:45:53,626 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 03:45:53,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:53,627 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 03:45:53,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:45:53,627 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 03:45:53,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:53,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1224944862, now seen corresponding path program 2 times [2024-06-28 03:45:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:53,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721357306] [2024-06-28 03:45:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:53,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:54,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721357306] [2024-06-28 03:45:54,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721357306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:54,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:54,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:54,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097261084] [2024-06-28 03:45:54,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:54,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:54,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:55,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:55,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 241 transitions, 2702 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:55,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:55,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:55,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:55,668 INFO L124 PetriNetUnfolderBase]: 2321/3661 cut-off events. [2024-06-28 03:45:55,669 INFO L125 PetriNetUnfolderBase]: For 78006/78009 co-relation queries the response was YES. [2024-06-28 03:45:55,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23493 conditions, 3661 events. 2321/3661 cut-off events. For 78006/78009 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 19775 event pairs, 431 based on Foata normal form. 14/3668 useless extension candidates. Maximal degree in co-relation 23413. Up to 2430 conditions per place. [2024-06-28 03:45:55,699 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 179 selfloop transitions, 104 changer transitions 0/287 dead transitions. [2024-06-28 03:45:55,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 287 transitions, 3684 flow [2024-06-28 03:45:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:45:55,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 03:45:55,700 INFO L175 Difference]: Start difference. First operand has 173 places, 241 transitions, 2702 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:45:55,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 287 transitions, 3684 flow [2024-06-28 03:45:55,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 287 transitions, 3609 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:55,840 INFO L231 Difference]: Finished difference. Result has 178 places, 246 transitions, 2987 flow [2024-06-28 03:45:55,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2987, PETRI_PLACES=178, PETRI_TRANSITIONS=246} [2024-06-28 03:45:55,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-28 03:45:55,840 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 246 transitions, 2987 flow [2024-06-28 03:45:55,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:55,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:55,841 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 03:45:55,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:45:55,841 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 03:45:55,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1224705852, now seen corresponding path program 3 times [2024-06-28 03:45:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:55,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301135495] [2024-06-28 03:45:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:55,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:57,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:57,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301135495] [2024-06-28 03:45:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301135495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:57,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:57,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:57,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032681976] [2024-06-28 03:45:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:57,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:57,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:57,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:45:57,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 246 transitions, 2987 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:57,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:57,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:45:57,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:58,583 INFO L124 PetriNetUnfolderBase]: 2396/3786 cut-off events. [2024-06-28 03:45:58,583 INFO L125 PetriNetUnfolderBase]: For 89050/89053 co-relation queries the response was YES. [2024-06-28 03:45:58,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25023 conditions, 3786 events. 2396/3786 cut-off events. For 89050/89053 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 20700 event pairs, 485 based on Foata normal form. 18/3797 useless extension candidates. Maximal degree in co-relation 24941. Up to 3149 conditions per place. [2024-06-28 03:45:58,612 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 184 selfloop transitions, 97 changer transitions 0/285 dead transitions. [2024-06-28 03:45:58,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 285 transitions, 3773 flow [2024-06-28 03:45:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 03:45:58,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:45:58,614 INFO L175 Difference]: Start difference. First operand has 178 places, 246 transitions, 2987 flow. Second operand 10 states and 180 transitions. [2024-06-28 03:45:58,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 285 transitions, 3773 flow [2024-06-28 03:45:58,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 285 transitions, 3691 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:58,731 INFO L231 Difference]: Finished difference. Result has 184 places, 248 transitions, 3170 flow [2024-06-28 03:45:58,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3170, PETRI_PLACES=184, PETRI_TRANSITIONS=248} [2024-06-28 03:45:58,731 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-28 03:45:58,732 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 248 transitions, 3170 flow [2024-06-28 03:45:58,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:58,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:58,732 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 03:45:58,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:45:58,732 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 03:45:58,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:58,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1218449742, now seen corresponding path program 4 times [2024-06-28 03:45:58,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:58,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552860993] [2024-06-28 03:45:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:01,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:01,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552860993] [2024-06-28 03:46:01,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552860993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:01,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:01,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:01,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483709283] [2024-06-28 03:46:01,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:01,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:01,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:01,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:01,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:01,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 248 transitions, 3170 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:01,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:01,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:01,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:02,284 INFO L124 PetriNetUnfolderBase]: 2429/3845 cut-off events. [2024-06-28 03:46:02,284 INFO L125 PetriNetUnfolderBase]: For 94158/94161 co-relation queries the response was YES. [2024-06-28 03:46:02,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25762 conditions, 3845 events. 2429/3845 cut-off events. For 94158/94161 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21125 event pairs, 493 based on Foata normal form. 18/3856 useless extension candidates. Maximal degree in co-relation 25678. Up to 3209 conditions per place. [2024-06-28 03:46:02,317 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 174 selfloop transitions, 107 changer transitions 0/285 dead transitions. [2024-06-28 03:46:02,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 285 transitions, 3929 flow [2024-06-28 03:46:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:46:02,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-06-28 03:46:02,319 INFO L175 Difference]: Start difference. First operand has 184 places, 248 transitions, 3170 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:46:02,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 285 transitions, 3929 flow [2024-06-28 03:46:02,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 285 transitions, 3727 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:02,504 INFO L231 Difference]: Finished difference. Result has 186 places, 249 transitions, 3234 flow [2024-06-28 03:46:02,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3234, PETRI_PLACES=186, PETRI_TRANSITIONS=249} [2024-06-28 03:46:02,505 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-28 03:46:02,506 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 249 transitions, 3234 flow [2024-06-28 03:46:02,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:02,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:02,506 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 03:46:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:46:02,506 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:02,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 431756769, now seen corresponding path program 1 times [2024-06-28 03:46:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:02,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650773285] [2024-06-28 03:46:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:03,607 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 03:46:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:03,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650773285] [2024-06-28 03:46:03,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650773285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:03,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:03,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:03,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97806508] [2024-06-28 03:46:03,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:03,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:03,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:03,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 249 transitions, 3234 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 03:46:03,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:03,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:03,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:04,497 INFO L124 PetriNetUnfolderBase]: 2473/3908 cut-off events. [2024-06-28 03:46:04,497 INFO L125 PetriNetUnfolderBase]: For 98114/98114 co-relation queries the response was YES. [2024-06-28 03:46:04,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26211 conditions, 3908 events. 2473/3908 cut-off events. For 98114/98114 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21504 event pairs, 516 based on Foata normal form. 12/3910 useless extension candidates. Maximal degree in co-relation 26126. Up to 3654 conditions per place. [2024-06-28 03:46:04,533 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 231 selfloop transitions, 31 changer transitions 0/266 dead transitions. [2024-06-28 03:46:04,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 266 transitions, 3872 flow [2024-06-28 03:46:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:46:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:46:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 03:46:04,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-28 03:46:04,534 INFO L175 Difference]: Start difference. First operand has 186 places, 249 transitions, 3234 flow. Second operand 6 states and 109 transitions. [2024-06-28 03:46:04,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 266 transitions, 3872 flow [2024-06-28 03:46:04,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 266 transitions, 3647 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:04,706 INFO L231 Difference]: Finished difference. Result has 184 places, 250 transitions, 3093 flow [2024-06-28 03:46:04,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3093, PETRI_PLACES=184, PETRI_TRANSITIONS=250} [2024-06-28 03:46:04,707 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-28 03:46:04,707 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 250 transitions, 3093 flow [2024-06-28 03:46:04,707 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 03:46:04,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:04,708 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 03:46:04,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:46:04,708 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 03:46:04,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:04,708 INFO L85 PathProgramCache]: Analyzing trace with hash -138160383, now seen corresponding path program 3 times [2024-06-28 03:46:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:04,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98169421] [2024-06-28 03:46:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:04,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:05,344 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 03:46:05,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:05,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98169421] [2024-06-28 03:46:05,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98169421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:05,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:05,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:05,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563937962] [2024-06-28 03:46:05,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:05,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:05,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:05,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:05,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 250 transitions, 3093 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 03:46:05,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:05,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:05,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:06,149 INFO L124 PetriNetUnfolderBase]: 2493/3941 cut-off events. [2024-06-28 03:46:06,150 INFO L125 PetriNetUnfolderBase]: For 96755/96758 co-relation queries the response was YES. [2024-06-28 03:46:06,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26153 conditions, 3941 events. 2493/3941 cut-off events. For 96755/96758 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21791 event pairs, 507 based on Foata normal form. 6/3940 useless extension candidates. Maximal degree in co-relation 26067. Up to 3713 conditions per place. [2024-06-28 03:46:06,186 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 234 selfloop transitions, 35 changer transitions 0/273 dead transitions. [2024-06-28 03:46:06,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 273 transitions, 3781 flow [2024-06-28 03:46:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:46:06,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 03:46:06,189 INFO L175 Difference]: Start difference. First operand has 184 places, 250 transitions, 3093 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:46:06,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 273 transitions, 3781 flow [2024-06-28 03:46:06,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 273 transitions, 3723 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 03:46:06,355 INFO L231 Difference]: Finished difference. Result has 187 places, 253 transitions, 3169 flow [2024-06-28 03:46:06,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3169, PETRI_PLACES=187, PETRI_TRANSITIONS=253} [2024-06-28 03:46:06,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-28 03:46:06,357 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 253 transitions, 3169 flow [2024-06-28 03:46:06,357 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 03:46:06,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:06,357 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 03:46:06,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:46:06,357 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 03:46:06,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash -125780223, now seen corresponding path program 4 times [2024-06-28 03:46:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:06,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307074613] [2024-06-28 03:46:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:06,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:06,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307074613] [2024-06-28 03:46:06,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307074613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:06,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:06,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:46:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307359781] [2024-06-28 03:46:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:06,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:46:06,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:46:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:46:06,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:06,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 253 transitions, 3169 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 03:46:06,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:06,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:06,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:07,702 INFO L124 PetriNetUnfolderBase]: 2537/4006 cut-off events. [2024-06-28 03:46:07,702 INFO L125 PetriNetUnfolderBase]: For 104961/104964 co-relation queries the response was YES. [2024-06-28 03:46:07,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27194 conditions, 4006 events. 2537/4006 cut-off events. For 104961/104964 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22190 event pairs, 512 based on Foata normal form. 6/4005 useless extension candidates. Maximal degree in co-relation 27107. Up to 3667 conditions per place. [2024-06-28 03:46:07,733 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 223 selfloop transitions, 55 changer transitions 0/282 dead transitions. [2024-06-28 03:46:07,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 282 transitions, 4027 flow [2024-06-28 03:46:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:46:07,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-28 03:46:07,735 INFO L175 Difference]: Start difference. First operand has 187 places, 253 transitions, 3169 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:46:07,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 282 transitions, 4027 flow [2024-06-28 03:46:07,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 282 transitions, 3921 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:46:07,888 INFO L231 Difference]: Finished difference. Result has 191 places, 262 transitions, 3346 flow [2024-06-28 03:46:07,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3346, PETRI_PLACES=191, PETRI_TRANSITIONS=262} [2024-06-28 03:46:07,889 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 03:46:07,889 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 262 transitions, 3346 flow [2024-06-28 03:46:07,889 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 03:46:07,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:07,889 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 03:46:07,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:46:07,890 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 03:46:07,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1403175061, now seen corresponding path program 5 times [2024-06-28 03:46:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827845107] [2024-06-28 03:46:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:08,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:08,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827845107] [2024-06-28 03:46:08,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827845107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:08,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:08,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:46:08,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728323103] [2024-06-28 03:46:08,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:08,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:46:08,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:08,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:46:08,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:46:08,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:08,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 262 transitions, 3346 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 03:46:08,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:08,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:08,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:09,221 INFO L124 PetriNetUnfolderBase]: 2557/4040 cut-off events. [2024-06-28 03:46:09,221 INFO L125 PetriNetUnfolderBase]: For 113181/113184 co-relation queries the response was YES. [2024-06-28 03:46:09,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28184 conditions, 4040 events. 2557/4040 cut-off events. For 113181/113184 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 22435 event pairs, 521 based on Foata normal form. 6/4039 useless extension candidates. Maximal degree in co-relation 28095. Up to 3822 conditions per place. [2024-06-28 03:46:09,258 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 242 selfloop transitions, 34 changer transitions 0/280 dead transitions. [2024-06-28 03:46:09,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 280 transitions, 4106 flow [2024-06-28 03:46:09,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:46:09,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:46:09,260 INFO L175 Difference]: Start difference. First operand has 191 places, 262 transitions, 3346 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:46:09,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 280 transitions, 4106 flow [2024-06-28 03:46:09,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 280 transitions, 4023 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-28 03:46:09,456 INFO L231 Difference]: Finished difference. Result has 196 places, 265 transitions, 3401 flow [2024-06-28 03:46:09,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3401, PETRI_PLACES=196, PETRI_TRANSITIONS=265} [2024-06-28 03:46:09,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-28 03:46:09,456 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 265 transitions, 3401 flow [2024-06-28 03:46:09,457 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 03:46:09,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:09,457 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 03:46:09,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:46:09,457 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:09,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1979795201, now seen corresponding path program 6 times [2024-06-28 03:46:09,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:09,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641744693] [2024-06-28 03:46:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:09,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:10,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:10,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641744693] [2024-06-28 03:46:10,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641744693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:10,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:10,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:46:10,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905569870] [2024-06-28 03:46:10,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:10,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:46:10,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:10,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:46:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:46:10,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:10,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 265 transitions, 3401 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 03:46:10,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:10,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:10,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:10,820 INFO L124 PetriNetUnfolderBase]: 2545/4022 cut-off events. [2024-06-28 03:46:10,821 INFO L125 PetriNetUnfolderBase]: For 113243/113246 co-relation queries the response was YES. [2024-06-28 03:46:10,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27750 conditions, 4022 events. 2545/4022 cut-off events. For 113243/113246 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22313 event pairs, 523 based on Foata normal form. 6/4021 useless extension candidates. Maximal degree in co-relation 27658. Up to 3850 conditions per place. [2024-06-28 03:46:10,857 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 247 selfloop transitions, 26 changer transitions 0/277 dead transitions. [2024-06-28 03:46:10,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 277 transitions, 4001 flow [2024-06-28 03:46:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 03:46:10,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 03:46:10,859 INFO L175 Difference]: Start difference. First operand has 196 places, 265 transitions, 3401 flow. Second operand 7 states and 116 transitions. [2024-06-28 03:46:10,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 277 transitions, 4001 flow [2024-06-28 03:46:11,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 277 transitions, 3827 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:11,077 INFO L231 Difference]: Finished difference. Result has 198 places, 265 transitions, 3285 flow [2024-06-28 03:46:11,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3227, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3285, PETRI_PLACES=198, PETRI_TRANSITIONS=265} [2024-06-28 03:46:11,078 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 03:46:11,078 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 265 transitions, 3285 flow [2024-06-28 03:46:11,078 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 03:46:11,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:11,078 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 03:46:11,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:46:11,078 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:11,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1993613699, now seen corresponding path program 2 times [2024-06-28 03:46:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913241850] [2024-06-28 03:46:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:11,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:11,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913241850] [2024-06-28 03:46:11,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913241850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:11,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:11,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:11,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778738169] [2024-06-28 03:46:11,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:11,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:11,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:11,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:11,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:11,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:11,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 265 transitions, 3285 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 03:46:11,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:11,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:11,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:12,830 INFO L124 PetriNetUnfolderBase]: 2589/4093 cut-off events. [2024-06-28 03:46:12,831 INFO L125 PetriNetUnfolderBase]: For 120855/120855 co-relation queries the response was YES. [2024-06-28 03:46:12,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28049 conditions, 4093 events. 2589/4093 cut-off events. For 120855/120855 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 22783 event pairs, 534 based on Foata normal form. 12/4095 useless extension candidates. Maximal degree in co-relation 27957. Up to 3813 conditions per place. [2024-06-28 03:46:12,871 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 248 selfloop transitions, 33 changer transitions 0/285 dead transitions. [2024-06-28 03:46:12,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 285 transitions, 3999 flow [2024-06-28 03:46:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:46:12,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 03:46:12,872 INFO L175 Difference]: Start difference. First operand has 198 places, 265 transitions, 3285 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:46:12,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 285 transitions, 3999 flow [2024-06-28 03:46:13,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 285 transitions, 3878 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:13,073 INFO L231 Difference]: Finished difference. Result has 198 places, 266 transitions, 3251 flow [2024-06-28 03:46:13,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3251, PETRI_PLACES=198, PETRI_TRANSITIONS=266} [2024-06-28 03:46:13,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 03:46:13,074 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 266 transitions, 3251 flow [2024-06-28 03:46:13,074 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 03:46:13,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:13,074 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 03:46:13,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:46:13,074 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1994088929, now seen corresponding path program 3 times [2024-06-28 03:46:13,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:13,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386144558] [2024-06-28 03:46:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:13,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386144558] [2024-06-28 03:46:13,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386144558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:13,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:13,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:13,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657332828] [2024-06-28 03:46:13,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:13,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:13,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:13,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:13,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 266 transitions, 3251 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 03:46:13,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:13,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:13,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:14,782 INFO L124 PetriNetUnfolderBase]: 2591/4099 cut-off events. [2024-06-28 03:46:14,782 INFO L125 PetriNetUnfolderBase]: For 121188/121188 co-relation queries the response was YES. [2024-06-28 03:46:14,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27973 conditions, 4099 events. 2591/4099 cut-off events. For 121188/121188 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 22815 event pairs, 524 based on Foata normal form. 8/4097 useless extension candidates. Maximal degree in co-relation 27881. Up to 3729 conditions per place. [2024-06-28 03:46:14,820 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 249 selfloop transitions, 35 changer transitions 0/288 dead transitions. [2024-06-28 03:46:14,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 288 transitions, 3995 flow [2024-06-28 03:46:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:46:14,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 03:46:14,821 INFO L175 Difference]: Start difference. First operand has 198 places, 266 transitions, 3251 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:46:14,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 288 transitions, 3995 flow [2024-06-28 03:46:15,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 288 transitions, 3926 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:15,041 INFO L231 Difference]: Finished difference. Result has 200 places, 267 transitions, 3274 flow [2024-06-28 03:46:15,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3182, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3274, PETRI_PLACES=200, PETRI_TRANSITIONS=267} [2024-06-28 03:46:15,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-28 03:46:15,042 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 267 transitions, 3274 flow [2024-06-28 03:46:15,042 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 03:46:15,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:15,042 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 03:46:15,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:46:15,043 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:15,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash -130533887, now seen corresponding path program 1 times [2024-06-28 03:46:15,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:15,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951742134] [2024-06-28 03:46:15,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:15,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:15,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:15,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951742134] [2024-06-28 03:46:15,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951742134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:15,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:15,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097854394] [2024-06-28 03:46:15,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:15,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:15,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:15,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:15,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:15,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:15,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 267 transitions, 3274 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 03:46:15,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:15,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:15,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:16,698 INFO L124 PetriNetUnfolderBase]: 2651/4188 cut-off events. [2024-06-28 03:46:16,698 INFO L125 PetriNetUnfolderBase]: For 130394/130397 co-relation queries the response was YES. [2024-06-28 03:46:16,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28723 conditions, 4188 events. 2651/4188 cut-off events. For 130394/130397 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 23400 event pairs, 533 based on Foata normal form. 14/4195 useless extension candidates. Maximal degree in co-relation 28630. Up to 3687 conditions per place. [2024-06-28 03:46:16,733 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 227 selfloop transitions, 65 changer transitions 0/296 dead transitions. [2024-06-28 03:46:16,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 296 transitions, 4056 flow [2024-06-28 03:46:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:46:16,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 03:46:16,735 INFO L175 Difference]: Start difference. First operand has 200 places, 267 transitions, 3274 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:46:16,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 296 transitions, 4056 flow [2024-06-28 03:46:16,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 296 transitions, 3980 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:16,960 INFO L231 Difference]: Finished difference. Result has 203 places, 272 transitions, 3430 flow [2024-06-28 03:46:16,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3198, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3430, PETRI_PLACES=203, PETRI_TRANSITIONS=272} [2024-06-28 03:46:16,961 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-28 03:46:16,961 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 272 transitions, 3430 flow [2024-06-28 03:46:16,961 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 03:46:16,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:16,961 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 03:46:16,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:46:16,962 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:16,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash -130413917, now seen corresponding path program 2 times [2024-06-28 03:46:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:16,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336809286] [2024-06-28 03:46:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:16,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:17,824 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 03:46:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336809286] [2024-06-28 03:46:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336809286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:17,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873518444] [2024-06-28 03:46:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:17,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:17,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:17,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 272 transitions, 3430 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 03:46:17,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:17,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:17,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:18,592 INFO L124 PetriNetUnfolderBase]: 2669/4206 cut-off events. [2024-06-28 03:46:18,592 INFO L125 PetriNetUnfolderBase]: For 132779/132779 co-relation queries the response was YES. [2024-06-28 03:46:18,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29836 conditions, 4206 events. 2669/4206 cut-off events. For 132779/132779 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 23451 event pairs, 572 based on Foata normal form. 2/4205 useless extension candidates. Maximal degree in co-relation 29742. Up to 3989 conditions per place. [2024-06-28 03:46:18,634 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 263 selfloop transitions, 37 changer transitions 0/304 dead transitions. [2024-06-28 03:46:18,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 304 transitions, 4367 flow [2024-06-28 03:46:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:46:18,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 03:46:18,636 INFO L175 Difference]: Start difference. First operand has 203 places, 272 transitions, 3430 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:46:18,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 304 transitions, 4367 flow [2024-06-28 03:46:18,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 304 transitions, 4156 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 03:46:18,942 INFO L231 Difference]: Finished difference. Result has 207 places, 283 transitions, 3511 flow [2024-06-28 03:46:18,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3511, PETRI_PLACES=207, PETRI_TRANSITIONS=283} [2024-06-28 03:46:18,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-28 03:46:18,943 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 283 transitions, 3511 flow [2024-06-28 03:46:18,943 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 03:46:18,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:18,943 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 03:46:18,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:46:18,943 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:18,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1535707371, now seen corresponding path program 3 times [2024-06-28 03:46:18,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:18,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369647075] [2024-06-28 03:46:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:18,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:19,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369647075] [2024-06-28 03:46:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369647075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:19,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:19,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351111255] [2024-06-28 03:46:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:19,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:19,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 283 transitions, 3511 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 03:46:19,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:19,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:19,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:20,563 INFO L124 PetriNetUnfolderBase]: 2689/4234 cut-off events. [2024-06-28 03:46:20,564 INFO L125 PetriNetUnfolderBase]: For 139626/139626 co-relation queries the response was YES. [2024-06-28 03:46:20,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30059 conditions, 4234 events. 2689/4234 cut-off events. For 139626/139626 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23575 event pairs, 576 based on Foata normal form. 4/4235 useless extension candidates. Maximal degree in co-relation 29962. Up to 4062 conditions per place. [2024-06-28 03:46:20,608 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 277 selfloop transitions, 25 changer transitions 0/306 dead transitions. [2024-06-28 03:46:20,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 306 transitions, 4292 flow [2024-06-28 03:46:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:46:20,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:46:20,609 INFO L175 Difference]: Start difference. First operand has 207 places, 283 transitions, 3511 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:46:20,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 306 transitions, 4292 flow [2024-06-28 03:46:20,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 306 transitions, 4199 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 03:46:20,829 INFO L231 Difference]: Finished difference. Result has 212 places, 288 transitions, 3576 flow [2024-06-28 03:46:20,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3576, PETRI_PLACES=212, PETRI_TRANSITIONS=288} [2024-06-28 03:46:20,829 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 03:46:20,829 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 288 transitions, 3576 flow [2024-06-28 03:46:20,829 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 03:46:20,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:20,830 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 03:46:20,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:46:20,830 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:20,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash -125765343, now seen corresponding path program 1 times [2024-06-28 03:46:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:20,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180501913] [2024-06-28 03:46:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:20,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:21,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:21,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180501913] [2024-06-28 03:46:21,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180501913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:21,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:21,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:21,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434345461] [2024-06-28 03:46:21,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:21,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:21,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:21,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 288 transitions, 3576 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 03:46:21,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:21,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:21,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:22,590 INFO L124 PetriNetUnfolderBase]: 2697/4246 cut-off events. [2024-06-28 03:46:22,591 INFO L125 PetriNetUnfolderBase]: For 144566/144566 co-relation queries the response was YES. [2024-06-28 03:46:22,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30587 conditions, 4246 events. 2697/4246 cut-off events. For 144566/144566 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23668 event pairs, 578 based on Foata normal form. 2/4245 useless extension candidates. Maximal degree in co-relation 30488. Up to 4092 conditions per place. [2024-06-28 03:46:22,640 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 282 selfloop transitions, 19 changer transitions 0/305 dead transitions. [2024-06-28 03:46:22,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 305 transitions, 4270 flow [2024-06-28 03:46:22,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:46:22,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:46:22,642 INFO L175 Difference]: Start difference. First operand has 212 places, 288 transitions, 3576 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:46:22,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 305 transitions, 4270 flow [2024-06-28 03:46:22,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 305 transitions, 4164 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:46:22,903 INFO L231 Difference]: Finished difference. Result has 213 places, 290 transitions, 3553 flow [2024-06-28 03:46:22,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3553, PETRI_PLACES=213, PETRI_TRANSITIONS=290} [2024-06-28 03:46:22,903 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-28 03:46:22,904 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 290 transitions, 3553 flow [2024-06-28 03:46:22,904 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 03:46:22,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:22,904 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 03:46:22,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:46:22,904 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:22,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:22,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1853163779, now seen corresponding path program 2 times [2024-06-28 03:46:22,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:22,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988528184] [2024-06-28 03:46:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:22,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:23,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988528184] [2024-06-28 03:46:23,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988528184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:23,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:23,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:23,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744521917] [2024-06-28 03:46:23,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:23,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:23,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:23,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:23,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 290 transitions, 3553 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 03:46:23,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:23,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:23,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:24,455 INFO L124 PetriNetUnfolderBase]: 2705/4258 cut-off events. [2024-06-28 03:46:24,455 INFO L125 PetriNetUnfolderBase]: For 150556/150556 co-relation queries the response was YES. [2024-06-28 03:46:24,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30845 conditions, 4258 events. 2705/4258 cut-off events. For 150556/150556 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23688 event pairs, 586 based on Foata normal form. 2/4257 useless extension candidates. Maximal degree in co-relation 30745. Up to 4114 conditions per place. [2024-06-28 03:46:24,502 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 284 selfloop transitions, 15 changer transitions 0/303 dead transitions. [2024-06-28 03:46:24,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 303 transitions, 4221 flow [2024-06-28 03:46:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 03:46:24,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 03:46:24,503 INFO L175 Difference]: Start difference. First operand has 213 places, 290 transitions, 3553 flow. Second operand 7 states and 113 transitions. [2024-06-28 03:46:24,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 303 transitions, 4221 flow [2024-06-28 03:46:24,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 303 transitions, 4154 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:24,771 INFO L231 Difference]: Finished difference. Result has 215 places, 292 transitions, 3565 flow [2024-06-28 03:46:24,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3486, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3565, PETRI_PLACES=215, PETRI_TRANSITIONS=292} [2024-06-28 03:46:24,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-28 03:46:24,772 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 292 transitions, 3565 flow [2024-06-28 03:46:24,772 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 03:46:24,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:24,772 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 03:46:24,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:46:24,772 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 03:46:24,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash -719593959, now seen corresponding path program 3 times [2024-06-28 03:46:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:24,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847213094] [2024-06-28 03:46:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:25,562 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 03:46:25,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847213094] [2024-06-28 03:46:25,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847213094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:25,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:25,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:46:25,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963207413] [2024-06-28 03:46:25,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:25,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:46:25,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:46:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:46:25,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:25,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 292 transitions, 3565 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 03:46:25,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:25,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:25,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:26,476 INFO L124 PetriNetUnfolderBase]: 2700/4247 cut-off events. [2024-06-28 03:46:26,477 INFO L125 PetriNetUnfolderBase]: For 154841/154841 co-relation queries the response was YES. [2024-06-28 03:46:26,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30895 conditions, 4247 events. 2700/4247 cut-off events. For 154841/154841 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23601 event pairs, 591 based on Foata normal form. 2/4246 useless extension candidates. Maximal degree in co-relation 30794. Up to 4104 conditions per place. [2024-06-28 03:46:26,518 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 282 selfloop transitions, 19 changer transitions 0/305 dead transitions. [2024-06-28 03:46:26,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 305 transitions, 4247 flow [2024-06-28 03:46:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:26,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 03:46:26,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 03:46:26,519 INFO L175 Difference]: Start difference. First operand has 215 places, 292 transitions, 3565 flow. Second operand 7 states and 114 transitions. [2024-06-28 03:46:26,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 305 transitions, 4247 flow [2024-06-28 03:46:26,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 305 transitions, 4184 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:26,819 INFO L231 Difference]: Finished difference. Result has 217 places, 294 transitions, 3594 flow [2024-06-28 03:46:26,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3502, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3594, PETRI_PLACES=217, PETRI_TRANSITIONS=294} [2024-06-28 03:46:26,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 03:46:26,820 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 294 transitions, 3594 flow [2024-06-28 03:46:26,820 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 03:46:26,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:26,820 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 03:46:26,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:46:26,821 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:26,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash -727875113, now seen corresponding path program 4 times [2024-06-28 03:46:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114441802] [2024-06-28 03:46:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:27,647 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 03:46:27,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:27,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114441802] [2024-06-28 03:46:27,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114441802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:27,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:27,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:27,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637114470] [2024-06-28 03:46:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:27,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:27,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:27,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 294 transitions, 3594 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 03:46:27,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:27,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:27,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:28,544 INFO L124 PetriNetUnfolderBase]: 2704/4253 cut-off events. [2024-06-28 03:46:28,544 INFO L125 PetriNetUnfolderBase]: For 161046/161046 co-relation queries the response was YES. [2024-06-28 03:46:28,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31075 conditions, 4253 events. 2704/4253 cut-off events. For 161046/161046 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23660 event pairs, 588 based on Foata normal form. 4/4254 useless extension candidates. Maximal degree in co-relation 30973. Up to 4100 conditions per place. [2024-06-28 03:46:28,584 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 287 selfloop transitions, 20 changer transitions 0/311 dead transitions. [2024-06-28 03:46:28,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 311 transitions, 4337 flow [2024-06-28 03:46:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:46:28,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 03:46:28,585 INFO L175 Difference]: Start difference. First operand has 217 places, 294 transitions, 3594 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:46:28,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 311 transitions, 4337 flow [2024-06-28 03:46:28,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 311 transitions, 4231 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:28,881 INFO L231 Difference]: Finished difference. Result has 220 places, 297 transitions, 3612 flow [2024-06-28 03:46:28,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3612, PETRI_PLACES=220, PETRI_TRANSITIONS=297} [2024-06-28 03:46:28,882 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-28 03:46:28,882 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 297 transitions, 3612 flow [2024-06-28 03:46:28,882 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 03:46:28,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:28,882 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 03:46:28,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:46:28,883 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:28,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:28,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1993797963, now seen corresponding path program 1 times [2024-06-28 03:46:28,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392847794] [2024-06-28 03:46:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:28,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:29,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:29,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392847794] [2024-06-28 03:46:29,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392847794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:29,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:29,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:29,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892904360] [2024-06-28 03:46:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:29,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:29,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:29,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:29,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:29,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:29,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 297 transitions, 3612 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 03:46:29,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:29,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:29,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:30,647 INFO L124 PetriNetUnfolderBase]: 2701/4249 cut-off events. [2024-06-28 03:46:30,648 INFO L125 PetriNetUnfolderBase]: For 163802/163802 co-relation queries the response was YES. [2024-06-28 03:46:30,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31352 conditions, 4249 events. 2701/4249 cut-off events. For 163802/163802 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23661 event pairs, 589 based on Foata normal form. 1/4247 useless extension candidates. Maximal degree in co-relation 31249. Up to 4103 conditions per place. [2024-06-28 03:46:30,690 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 284 selfloop transitions, 23 changer transitions 0/311 dead transitions. [2024-06-28 03:46:30,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 311 transitions, 4328 flow [2024-06-28 03:46:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 03:46:30,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 03:46:30,691 INFO L175 Difference]: Start difference. First operand has 220 places, 297 transitions, 3612 flow. Second operand 7 states and 115 transitions. [2024-06-28 03:46:30,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 311 transitions, 4328 flow [2024-06-28 03:46:30,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 311 transitions, 4232 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:46:30,975 INFO L231 Difference]: Finished difference. Result has 221 places, 300 transitions, 3638 flow [2024-06-28 03:46:30,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3516, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3638, PETRI_PLACES=221, PETRI_TRANSITIONS=300} [2024-06-28 03:46:30,975 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-28 03:46:30,976 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 300 transitions, 3638 flow [2024-06-28 03:46:30,976 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 03:46:30,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:30,976 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 03:46:30,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:46:30,976 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 03:46:30,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1822605300, now seen corresponding path program 1 times [2024-06-28 03:46:30,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:30,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128229305] [2024-06-28 03:46:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:32,199 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 03:46:32,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128229305] [2024-06-28 03:46:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128229305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:32,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:32,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681009748] [2024-06-28 03:46:32,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:32,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:32,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:32,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:32,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:32,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 300 transitions, 3638 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:32,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:32,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:32,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:33,390 INFO L124 PetriNetUnfolderBase]: 2742/4324 cut-off events. [2024-06-28 03:46:33,391 INFO L125 PetriNetUnfolderBase]: For 177245/177245 co-relation queries the response was YES. [2024-06-28 03:46:33,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32093 conditions, 4324 events. 2742/4324 cut-off events. For 177245/177245 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24128 event pairs, 399 based on Foata normal form. 12/4326 useless extension candidates. Maximal degree in co-relation 31989. Up to 3964 conditions per place. [2024-06-28 03:46:33,427 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 300 selfloop transitions, 27 changer transitions 0/331 dead transitions. [2024-06-28 03:46:33,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 331 transitions, 4442 flow [2024-06-28 03:46:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:46:33,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 03:46:33,429 INFO L175 Difference]: Start difference. First operand has 221 places, 300 transitions, 3638 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:46:33,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 331 transitions, 4442 flow [2024-06-28 03:46:33,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 331 transitions, 4354 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:46:33,744 INFO L231 Difference]: Finished difference. Result has 224 places, 303 transitions, 3666 flow [2024-06-28 03:46:33,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3666, PETRI_PLACES=224, PETRI_TRANSITIONS=303} [2024-06-28 03:46:33,745 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-28 03:46:33,745 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 303 transitions, 3666 flow [2024-06-28 03:46:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:33,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:33,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:33,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:46:33,746 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 03:46:33,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash 579819580, now seen corresponding path program 2 times [2024-06-28 03:46:33,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:33,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559841584] [2024-06-28 03:46:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:33,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:35,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:35,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559841584] [2024-06-28 03:46:35,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559841584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:35,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:35,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:35,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761188213] [2024-06-28 03:46:35,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:35,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:35,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:35,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:35,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 303 transitions, 3666 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:35,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:35,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:35,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:36,215 INFO L124 PetriNetUnfolderBase]: 2783/4401 cut-off events. [2024-06-28 03:46:36,215 INFO L125 PetriNetUnfolderBase]: For 178487/178487 co-relation queries the response was YES. [2024-06-28 03:46:36,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32704 conditions, 4401 events. 2783/4401 cut-off events. For 178487/178487 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24784 event pairs, 523 based on Foata normal form. 12/4403 useless extension candidates. Maximal degree in co-relation 32599. Up to 3765 conditions per place. [2024-06-28 03:46:36,254 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 251 selfloop transitions, 84 changer transitions 0/339 dead transitions. [2024-06-28 03:46:36,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 339 transitions, 4524 flow [2024-06-28 03:46:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:46:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:46:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:46:36,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 03:46:36,256 INFO L175 Difference]: Start difference. First operand has 224 places, 303 transitions, 3666 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:46:36,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 339 transitions, 4524 flow [2024-06-28 03:46:36,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 339 transitions, 4442 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:36,540 INFO L231 Difference]: Finished difference. Result has 229 places, 307 transitions, 3833 flow [2024-06-28 03:46:36,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3833, PETRI_PLACES=229, PETRI_TRANSITIONS=307} [2024-06-28 03:46:36,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-28 03:46:36,541 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 307 transitions, 3833 flow [2024-06-28 03:46:36,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:36,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:36,541 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 03:46:36,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:46:36,542 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 03:46:36,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:36,542 INFO L85 PathProgramCache]: Analyzing trace with hash 109014664, now seen corresponding path program 3 times [2024-06-28 03:46:36,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:36,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870825426] [2024-06-28 03:46:36,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:36,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:38,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:38,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870825426] [2024-06-28 03:46:38,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870825426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:38,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:38,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:38,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653669876] [2024-06-28 03:46:38,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:38,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:38,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:38,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:38,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 307 transitions, 3833 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:38,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:38,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:38,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:39,802 INFO L124 PetriNetUnfolderBase]: 2763/4370 cut-off events. [2024-06-28 03:46:39,803 INFO L125 PetriNetUnfolderBase]: For 180201/180204 co-relation queries the response was YES. [2024-06-28 03:46:39,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32481 conditions, 4370 events. 2763/4370 cut-off events. For 180201/180204 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24621 event pairs, 515 based on Foata normal form. 14/4377 useless extension candidates. Maximal degree in co-relation 32374. Up to 3774 conditions per place. [2024-06-28 03:46:39,847 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 242 selfloop transitions, 99 changer transitions 0/345 dead transitions. [2024-06-28 03:46:39,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 345 transitions, 4694 flow [2024-06-28 03:46:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 03:46:39,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-28 03:46:39,849 INFO L175 Difference]: Start difference. First operand has 229 places, 307 transitions, 3833 flow. Second operand 10 states and 178 transitions. [2024-06-28 03:46:39,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 345 transitions, 4694 flow [2024-06-28 03:46:40,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 345 transitions, 4478 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:46:40,186 INFO L231 Difference]: Finished difference. Result has 234 places, 309 transitions, 3862 flow [2024-06-28 03:46:40,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3862, PETRI_PLACES=234, PETRI_TRANSITIONS=309} [2024-06-28 03:46:40,187 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-28 03:46:40,188 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 309 transitions, 3862 flow [2024-06-28 03:46:40,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:40,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:40,188 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 03:46:40,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:46:40,188 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 03:46:40,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash 103508134, now seen corresponding path program 4 times [2024-06-28 03:46:40,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:40,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294169169] [2024-06-28 03:46:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:41,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:41,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294169169] [2024-06-28 03:46:41,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294169169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:41,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:41,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594630978] [2024-06-28 03:46:41,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:41,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:41,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:41,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:41,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:41,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 309 transitions, 3862 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:41,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:41,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:41,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:42,939 INFO L124 PetriNetUnfolderBase]: 2743/4338 cut-off events. [2024-06-28 03:46:42,939 INFO L125 PetriNetUnfolderBase]: For 176698/176701 co-relation queries the response was YES. [2024-06-28 03:46:42,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31812 conditions, 4338 events. 2743/4338 cut-off events. For 176698/176701 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 24405 event pairs, 486 based on Foata normal form. 14/4345 useless extension candidates. Maximal degree in co-relation 31703. Up to 3653 conditions per place. [2024-06-28 03:46:42,990 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 243 selfloop transitions, 101 changer transitions 0/348 dead transitions. [2024-06-28 03:46:42,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 348 transitions, 4694 flow [2024-06-28 03:46:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:43,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 03:46:43,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-28 03:46:43,013 INFO L175 Difference]: Start difference. First operand has 234 places, 309 transitions, 3862 flow. Second operand 10 states and 178 transitions. [2024-06-28 03:46:43,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 348 transitions, 4694 flow [2024-06-28 03:46:43,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 348 transitions, 4466 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:43,382 INFO L231 Difference]: Finished difference. Result has 237 places, 311 transitions, 3854 flow [2024-06-28 03:46:43,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3854, PETRI_PLACES=237, PETRI_TRANSITIONS=311} [2024-06-28 03:46:43,383 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 03:46:43,383 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 311 transitions, 3854 flow [2024-06-28 03:46:43,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:43,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:43,384 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 03:46:43,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:46:43,384 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:43,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 177009279, now seen corresponding path program 1 times [2024-06-28 03:46:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:43,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355537326] [2024-06-28 03:46:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:43,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:44,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:44,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355537326] [2024-06-28 03:46:44,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355537326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:44,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:44,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:44,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636534590] [2024-06-28 03:46:44,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:44,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:44,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:44,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:44,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 311 transitions, 3854 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 03:46:44,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:44,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:44,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:45,256 INFO L124 PetriNetUnfolderBase]: 2777/4380 cut-off events. [2024-06-28 03:46:45,257 INFO L125 PetriNetUnfolderBase]: For 182280/182280 co-relation queries the response was YES. [2024-06-28 03:46:45,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32561 conditions, 4380 events. 2777/4380 cut-off events. For 182280/182280 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24554 event pairs, 502 based on Foata normal form. 2/4372 useless extension candidates. Maximal degree in co-relation 32450. Up to 4007 conditions per place. [2024-06-28 03:46:45,300 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 262 selfloop transitions, 70 changer transitions 0/336 dead transitions. [2024-06-28 03:46:45,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 336 transitions, 4878 flow [2024-06-28 03:46:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:46:45,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-28 03:46:45,301 INFO L175 Difference]: Start difference. First operand has 237 places, 311 transitions, 3854 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:46:45,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 336 transitions, 4878 flow [2024-06-28 03:46:45,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 336 transitions, 4541 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:45,596 INFO L231 Difference]: Finished difference. Result has 237 places, 317 transitions, 3833 flow [2024-06-28 03:46:45,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3833, PETRI_PLACES=237, PETRI_TRANSITIONS=317} [2024-06-28 03:46:45,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 03:46:45,597 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 317 transitions, 3833 flow [2024-06-28 03:46:45,597 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 03:46:45,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:45,597 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 03:46:45,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:46:45,597 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:45,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:45,598 INFO L85 PathProgramCache]: Analyzing trace with hash 258006269, now seen corresponding path program 2 times [2024-06-28 03:46:45,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:45,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809488503] [2024-06-28 03:46:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809488503] [2024-06-28 03:46:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809488503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:46,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248280367] [2024-06-28 03:46:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:46,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:46,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:46,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:46,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 317 transitions, 3833 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 03:46:46,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:46,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:46,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:47,263 INFO L124 PetriNetUnfolderBase]: 2779/4381 cut-off events. [2024-06-28 03:46:47,263 INFO L125 PetriNetUnfolderBase]: For 186632/186632 co-relation queries the response was YES. [2024-06-28 03:46:47,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32232 conditions, 4381 events. 2779/4381 cut-off events. For 186632/186632 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24570 event pairs, 523 based on Foata normal form. 2/4373 useless extension candidates. Maximal degree in co-relation 32121. Up to 4156 conditions per place. [2024-06-28 03:46:47,309 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 293 selfloop transitions, 36 changer transitions 0/333 dead transitions. [2024-06-28 03:46:47,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 333 transitions, 4649 flow [2024-06-28 03:46:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:46:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:46:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:46:47,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:46:47,311 INFO L175 Difference]: Start difference. First operand has 237 places, 317 transitions, 3833 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:46:47,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 333 transitions, 4649 flow [2024-06-28 03:46:47,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 333 transitions, 4544 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 03:46:47,713 INFO L231 Difference]: Finished difference. Result has 240 places, 323 transitions, 3951 flow [2024-06-28 03:46:47,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3732, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3951, PETRI_PLACES=240, PETRI_TRANSITIONS=323} [2024-06-28 03:46:47,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-28 03:46:47,714 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 323 transitions, 3951 flow [2024-06-28 03:46:47,714 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 03:46:47,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:47,714 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 03:46:47,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:46:47,715 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 03:46:47,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2089455623, now seen corresponding path program 1 times [2024-06-28 03:46:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:47,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707503594] [2024-06-28 03:46:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:47,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:48,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:48,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707503594] [2024-06-28 03:46:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707503594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:48,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:48,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365340160] [2024-06-28 03:46:48,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:48,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:48,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:48,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:48,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:48,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 323 transitions, 3951 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 03:46:48,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:48,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:48,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:49,482 INFO L124 PetriNetUnfolderBase]: 2831/4456 cut-off events. [2024-06-28 03:46:49,482 INFO L125 PetriNetUnfolderBase]: For 195566/195569 co-relation queries the response was YES. [2024-06-28 03:46:49,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33310 conditions, 4456 events. 2831/4456 cut-off events. For 195566/195569 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24981 event pairs, 491 based on Foata normal form. 6/4455 useless extension candidates. Maximal degree in co-relation 33197. Up to 4066 conditions per place. [2024-06-28 03:46:49,536 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 281 selfloop transitions, 69 changer transitions 0/354 dead transitions. [2024-06-28 03:46:49,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 354 transitions, 5048 flow [2024-06-28 03:46:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:46:49,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:46:49,538 INFO L175 Difference]: Start difference. First operand has 240 places, 323 transitions, 3951 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:46:49,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 354 transitions, 5048 flow [2024-06-28 03:46:50,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 354 transitions, 4945 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 03:46:50,009 INFO L231 Difference]: Finished difference. Result has 245 places, 332 transitions, 4234 flow [2024-06-28 03:46:50,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4234, PETRI_PLACES=245, PETRI_TRANSITIONS=332} [2024-06-28 03:46:50,010 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-28 03:46:50,010 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 332 transitions, 4234 flow [2024-06-28 03:46:50,010 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 03:46:50,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:50,011 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 03:46:50,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:46:50,011 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 03:46:50,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:50,011 INFO L85 PathProgramCache]: Analyzing trace with hash -861993831, now seen corresponding path program 2 times [2024-06-28 03:46:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:50,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032091896] [2024-06-28 03:46:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:50,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032091896] [2024-06-28 03:46:50,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032091896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:50,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:50,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688731828] [2024-06-28 03:46:50,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:50,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:50,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 332 transitions, 4234 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 03:46:50,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:50,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:50,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:51,702 INFO L124 PetriNetUnfolderBase]: 2851/4484 cut-off events. [2024-06-28 03:46:51,702 INFO L125 PetriNetUnfolderBase]: For 201058/201061 co-relation queries the response was YES. [2024-06-28 03:46:51,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34429 conditions, 4484 events. 2851/4484 cut-off events. For 201058/201061 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 25139 event pairs, 489 based on Foata normal form. 6/4483 useless extension candidates. Maximal degree in co-relation 34315. Up to 4192 conditions per place. [2024-06-28 03:46:51,750 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 297 selfloop transitions, 54 changer transitions 0/355 dead transitions. [2024-06-28 03:46:51,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 355 transitions, 5154 flow [2024-06-28 03:46:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:46:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:46:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:46:51,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 03:46:51,751 INFO L175 Difference]: Start difference. First operand has 245 places, 332 transitions, 4234 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:46:51,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 355 transitions, 5154 flow [2024-06-28 03:46:52,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 355 transitions, 4975 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:52,345 INFO L231 Difference]: Finished difference. Result has 248 places, 336 transitions, 4284 flow [2024-06-28 03:46:52,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4284, PETRI_PLACES=248, PETRI_TRANSITIONS=336} [2024-06-28 03:46:52,345 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-28 03:46:52,345 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 336 transitions, 4284 flow [2024-06-28 03:46:52,346 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 03:46:52,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:52,346 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 03:46:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:46:52,346 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:46:52,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash 499282365, now seen corresponding path program 3 times [2024-06-28 03:46:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:52,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252339127] [2024-06-28 03:46:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:52,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:53,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:53,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252339127] [2024-06-28 03:46:53,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252339127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:53,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:53,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:53,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654189314] [2024-06-28 03:46:53,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:53,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:53,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:53,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:53,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:53,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:53,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 336 transitions, 4284 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 03:46:53,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:53,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:54,164 INFO L124 PetriNetUnfolderBase]: 2849/4479 cut-off events. [2024-06-28 03:46:54,164 INFO L125 PetriNetUnfolderBase]: For 198460/198460 co-relation queries the response was YES. [2024-06-28 03:46:54,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34158 conditions, 4479 events. 2849/4479 cut-off events. For 198460/198460 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25078 event pairs, 522 based on Foata normal form. 6/4475 useless extension candidates. Maximal degree in co-relation 34043. Up to 4222 conditions per place. [2024-06-28 03:46:54,207 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 301 selfloop transitions, 46 changer transitions 0/351 dead transitions. [2024-06-28 03:46:54,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 351 transitions, 5124 flow [2024-06-28 03:46:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:46:54,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-28 03:46:54,209 INFO L175 Difference]: Start difference. First operand has 248 places, 336 transitions, 4284 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:46:54,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 351 transitions, 5124 flow [2024-06-28 03:46:54,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 351 transitions, 4931 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:54,648 INFO L231 Difference]: Finished difference. Result has 248 places, 339 transitions, 4284 flow [2024-06-28 03:46:54,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4284, PETRI_PLACES=248, PETRI_TRANSITIONS=339} [2024-06-28 03:46:54,649 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-28 03:46:54,649 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 339 transitions, 4284 flow [2024-06-28 03:46:54,649 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 03:46:54,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:54,649 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 03:46:54,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:46:54,650 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 03:46:54,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:54,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1840586264, now seen corresponding path program 1 times [2024-06-28 03:46:54,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955001152] [2024-06-28 03:46:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:54,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:55,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:55,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955001152] [2024-06-28 03:46:55,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955001152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:55,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:55,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:55,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981095445] [2024-06-28 03:46:55,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:55,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:55,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:55,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:55,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:55,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:55,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 339 transitions, 4284 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 03:46:55,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:55,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:55,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:56,408 INFO L124 PetriNetUnfolderBase]: 2843/4471 cut-off events. [2024-06-28 03:46:56,408 INFO L125 PetriNetUnfolderBase]: For 192622/192622 co-relation queries the response was YES. [2024-06-28 03:46:56,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34080 conditions, 4471 events. 2843/4471 cut-off events. For 192622/192622 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25044 event pairs, 523 based on Foata normal form. 2/4463 useless extension candidates. Maximal degree in co-relation 33965. Up to 4224 conditions per place. [2024-06-28 03:46:56,457 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 301 selfloop transitions, 45 changer transitions 0/350 dead transitions. [2024-06-28 03:46:56,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 350 transitions, 5050 flow [2024-06-28 03:46:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:46:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:46:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:46:56,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:46:56,459 INFO L175 Difference]: Start difference. First operand has 248 places, 339 transitions, 4284 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:46:56,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 350 transitions, 5050 flow [2024-06-28 03:46:56,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 350 transitions, 4853 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 03:46:56,921 INFO L231 Difference]: Finished difference. Result has 249 places, 339 transitions, 4199 flow [2024-06-28 03:46:56,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4087, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4199, PETRI_PLACES=249, PETRI_TRANSITIONS=339} [2024-06-28 03:46:56,922 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-28 03:46:56,922 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 339 transitions, 4199 flow [2024-06-28 03:46:56,922 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 03:46:56,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:56,922 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 03:46:56,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:46:56,923 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 03:46:56,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash 248480093, now seen corresponding path program 1 times [2024-06-28 03:46:56,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:56,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811715790] [2024-06-28 03:46:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:56,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:57,716 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 03:46:57,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:57,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811715790] [2024-06-28 03:46:57,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811715790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:57,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:57,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:57,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461317580] [2024-06-28 03:46:57,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:57,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:57,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:57,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:57,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:46:57,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:46:57,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 339 transitions, 4199 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 03:46:57,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:57,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:46:57,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:58,758 INFO L124 PetriNetUnfolderBase]: 2825/4445 cut-off events. [2024-06-28 03:46:58,758 INFO L125 PetriNetUnfolderBase]: For 194567/194567 co-relation queries the response was YES. [2024-06-28 03:46:58,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33489 conditions, 4445 events. 2825/4445 cut-off events. For 194567/194567 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24840 event pairs, 401 based on Foata normal form. 8/4443 useless extension candidates. Maximal degree in co-relation 33373. Up to 4103 conditions per place. [2024-06-28 03:46:58,806 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 322 selfloop transitions, 36 changer transitions 0/362 dead transitions. [2024-06-28 03:46:58,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 362 transitions, 5119 flow [2024-06-28 03:46:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:46:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:46:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:46:58,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-28 03:46:58,808 INFO L175 Difference]: Start difference. First operand has 249 places, 339 transitions, 4199 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:46:58,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 362 transitions, 5119 flow [2024-06-28 03:46:59,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 362 transitions, 5043 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:46:59,183 INFO L231 Difference]: Finished difference. Result has 252 places, 339 transitions, 4199 flow [2024-06-28 03:46:59,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4199, PETRI_PLACES=252, PETRI_TRANSITIONS=339} [2024-06-28 03:46:59,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-28 03:46:59,184 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 339 transitions, 4199 flow [2024-06-28 03:46:59,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:59,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:59,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:59,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:46:59,184 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 03:46:59,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash 11846875, now seen corresponding path program 4 times [2024-06-28 03:46:59,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:59,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631261113] [2024-06-28 03:46:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:59,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:59,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631261113] [2024-06-28 03:46:59,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631261113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:59,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:59,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:46:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040743283] [2024-06-28 03:46:59,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:59,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:46:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:46:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:00,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:00,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 339 transitions, 4199 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 03:47:00,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:00,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:00,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:00,953 INFO L124 PetriNetUnfolderBase]: 2877/4524 cut-off events. [2024-06-28 03:47:00,953 INFO L125 PetriNetUnfolderBase]: For 198245/198248 co-relation queries the response was YES. [2024-06-28 03:47:00,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34493 conditions, 4524 events. 2877/4524 cut-off events. For 198245/198248 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25389 event pairs, 506 based on Foata normal form. 6/4523 useless extension candidates. Maximal degree in co-relation 34376. Up to 4228 conditions per place. [2024-06-28 03:47:01,006 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 325 selfloop transitions, 47 changer transitions 0/376 dead transitions. [2024-06-28 03:47:01,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 376 transitions, 5434 flow [2024-06-28 03:47:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:47:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:47:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:47:01,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 03:47:01,007 INFO L175 Difference]: Start difference. First operand has 252 places, 339 transitions, 4199 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:47:01,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 376 transitions, 5434 flow [2024-06-28 03:47:01,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 376 transitions, 5352 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:47:01,405 INFO L231 Difference]: Finished difference. Result has 257 places, 348 transitions, 4467 flow [2024-06-28 03:47:01,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4467, PETRI_PLACES=257, PETRI_TRANSITIONS=348} [2024-06-28 03:47:01,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 03:47:01,406 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 348 transitions, 4467 flow [2024-06-28 03:47:01,406 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 03:47:01,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:01,406 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 03:47:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:47:01,406 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:47:01,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash 11996605, now seen corresponding path program 5 times [2024-06-28 03:47:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:01,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987580935] [2024-06-28 03:47:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:02,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:02,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987580935] [2024-06-28 03:47:02,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987580935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:02,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:02,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:02,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460477649] [2024-06-28 03:47:02,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:02,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:02,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:02,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:02,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:02,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 348 transitions, 4467 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 03:47:02,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:02,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:02,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:03,321 INFO L124 PetriNetUnfolderBase]: 2865/4508 cut-off events. [2024-06-28 03:47:03,322 INFO L125 PetriNetUnfolderBase]: For 204403/204406 co-relation queries the response was YES. [2024-06-28 03:47:03,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34842 conditions, 4508 events. 2865/4508 cut-off events. For 204403/204406 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25331 event pairs, 506 based on Foata normal form. 6/4507 useless extension candidates. Maximal degree in co-relation 34723. Up to 4248 conditions per place. [2024-06-28 03:47:03,371 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 327 selfloop transitions, 39 changer transitions 0/370 dead transitions. [2024-06-28 03:47:03,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 370 transitions, 5349 flow [2024-06-28 03:47:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:47:03,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 03:47:03,373 INFO L175 Difference]: Start difference. First operand has 257 places, 348 transitions, 4467 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:47:03,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 370 transitions, 5349 flow [2024-06-28 03:47:03,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 370 transitions, 5127 flow, removed 90 selfloop flow, removed 5 redundant places. [2024-06-28 03:47:03,898 INFO L231 Difference]: Finished difference. Result has 260 places, 348 transitions, 4330 flow [2024-06-28 03:47:03,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4330, PETRI_PLACES=260, PETRI_TRANSITIONS=348} [2024-06-28 03:47:03,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 03:47:03,899 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 348 transitions, 4330 flow [2024-06-28 03:47:03,899 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 03:47:03,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:03,899 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 03:47:03,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:47:03,899 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:47:03,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash 239748025, now seen corresponding path program 6 times [2024-06-28 03:47:03,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:03,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799785064] [2024-06-28 03:47:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:04,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:04,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799785064] [2024-06-28 03:47:04,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799785064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:04,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:04,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246279740] [2024-06-28 03:47:04,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:04,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:04,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:04,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:04,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:04,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 348 transitions, 4330 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 03:47:04,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:04,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:04,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:05,886 INFO L124 PetriNetUnfolderBase]: 2906/4566 cut-off events. [2024-06-28 03:47:05,887 INFO L125 PetriNetUnfolderBase]: For 205790/205793 co-relation queries the response was YES. [2024-06-28 03:47:05,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35067 conditions, 4566 events. 2906/4566 cut-off events. For 205790/205793 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 25627 event pairs, 510 based on Foata normal form. 4/4563 useless extension candidates. Maximal degree in co-relation 34946. Up to 4097 conditions per place. [2024-06-28 03:47:05,931 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 306 selfloop transitions, 71 changer transitions 0/381 dead transitions. [2024-06-28 03:47:05,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 381 transitions, 5365 flow [2024-06-28 03:47:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:47:05,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 03:47:05,933 INFO L175 Difference]: Start difference. First operand has 260 places, 348 transitions, 4330 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:47:05,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 381 transitions, 5365 flow [2024-06-28 03:47:06,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 381 transitions, 5280 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:06,400 INFO L231 Difference]: Finished difference. Result has 263 places, 358 transitions, 4608 flow [2024-06-28 03:47:06,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4608, PETRI_PLACES=263, PETRI_TRANSITIONS=358} [2024-06-28 03:47:06,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-28 03:47:06,410 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 358 transitions, 4608 flow [2024-06-28 03:47:06,410 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 03:47:06,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:06,410 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 03:47:06,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:47:06,410 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:47:06,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash -506186459, now seen corresponding path program 7 times [2024-06-28 03:47:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941586241] [2024-06-28 03:47:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:07,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:07,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941586241] [2024-06-28 03:47:07,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941586241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:07,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:07,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625338675] [2024-06-28 03:47:07,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:07,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:07,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:07,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:07,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:07,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:07,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 358 transitions, 4608 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 03:47:07,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:07,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:07,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:08,157 INFO L124 PetriNetUnfolderBase]: 2940/4607 cut-off events. [2024-06-28 03:47:08,158 INFO L125 PetriNetUnfolderBase]: For 221509/221512 co-relation queries the response was YES. [2024-06-28 03:47:08,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36571 conditions, 4607 events. 2940/4607 cut-off events. For 221509/221512 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 25836 event pairs, 491 based on Foata normal form. 4/4604 useless extension candidates. Maximal degree in co-relation 36448. Up to 4019 conditions per place. [2024-06-28 03:47:08,213 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 280 selfloop transitions, 104 changer transitions 0/388 dead transitions. [2024-06-28 03:47:08,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 388 transitions, 5816 flow [2024-06-28 03:47:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:47:08,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 03:47:08,215 INFO L175 Difference]: Start difference. First operand has 263 places, 358 transitions, 4608 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:47:08,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 388 transitions, 5816 flow [2024-06-28 03:47:08,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 388 transitions, 5629 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 03:47:08,705 INFO L231 Difference]: Finished difference. Result has 267 places, 365 transitions, 4903 flow [2024-06-28 03:47:08,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4421, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4903, PETRI_PLACES=267, PETRI_TRANSITIONS=365} [2024-06-28 03:47:08,705 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-28 03:47:08,706 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 365 transitions, 4903 flow [2024-06-28 03:47:08,706 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 03:47:08,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:08,706 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 03:47:08,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:47:08,706 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:47:08,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash -362533079, now seen corresponding path program 8 times [2024-06-28 03:47:08,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:08,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938735393] [2024-06-28 03:47:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:08,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:09,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:09,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938735393] [2024-06-28 03:47:09,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938735393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:09,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:09,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947505688] [2024-06-28 03:47:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:09,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:09,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:09,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 365 transitions, 4903 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 03:47:09,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:09,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:09,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:10,465 INFO L124 PetriNetUnfolderBase]: 2960/4635 cut-off events. [2024-06-28 03:47:10,465 INFO L125 PetriNetUnfolderBase]: For 238784/238787 co-relation queries the response was YES. [2024-06-28 03:47:10,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37876 conditions, 4635 events. 2960/4635 cut-off events. For 238784/238787 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25954 event pairs, 485 based on Foata normal form. 6/4634 useless extension candidates. Maximal degree in co-relation 37752. Up to 4270 conditions per place. [2024-06-28 03:47:10,518 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 324 selfloop transitions, 62 changer transitions 0/390 dead transitions. [2024-06-28 03:47:10,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 390 transitions, 5985 flow [2024-06-28 03:47:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:47:10,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:47:10,519 INFO L175 Difference]: Start difference. First operand has 267 places, 365 transitions, 4903 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:47:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 390 transitions, 5985 flow [2024-06-28 03:47:11,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 390 transitions, 5806 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-28 03:47:11,081 INFO L231 Difference]: Finished difference. Result has 272 places, 369 transitions, 4997 flow [2024-06-28 03:47:11,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4744, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4997, PETRI_PLACES=272, PETRI_TRANSITIONS=369} [2024-06-28 03:47:11,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-28 03:47:11,082 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 369 transitions, 4997 flow [2024-06-28 03:47:11,082 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 03:47:11,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:11,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:11,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:47:11,083 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 03:47:11,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash -362295929, now seen corresponding path program 9 times [2024-06-28 03:47:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807006912] [2024-06-28 03:47:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:11,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:11,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:11,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807006912] [2024-06-28 03:47:11,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807006912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:11,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:11,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:11,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317435705] [2024-06-28 03:47:11,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:11,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:11,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:11,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:11,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 369 transitions, 4997 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 03:47:11,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:11,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:11,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:12,846 INFO L124 PetriNetUnfolderBase]: 2970/4649 cut-off events. [2024-06-28 03:47:12,846 INFO L125 PetriNetUnfolderBase]: For 241132/241135 co-relation queries the response was YES. [2024-06-28 03:47:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38199 conditions, 4649 events. 2970/4649 cut-off events. For 241132/241135 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26062 event pairs, 489 based on Foata normal form. 4/4646 useless extension candidates. Maximal degree in co-relation 38073. Up to 4236 conditions per place. [2024-06-28 03:47:12,904 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 313 selfloop transitions, 75 changer transitions 0/392 dead transitions. [2024-06-28 03:47:12,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 392 transitions, 6004 flow [2024-06-28 03:47:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:12,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:47:12,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:47:12,905 INFO L175 Difference]: Start difference. First operand has 272 places, 369 transitions, 4997 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:47:12,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 392 transitions, 6004 flow [2024-06-28 03:47:13,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 392 transitions, 5783 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:13,450 INFO L231 Difference]: Finished difference. Result has 274 places, 372 transitions, 5031 flow [2024-06-28 03:47:13,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5031, PETRI_PLACES=274, PETRI_TRANSITIONS=372} [2024-06-28 03:47:13,451 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 03:47:13,451 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 372 transitions, 5031 flow [2024-06-28 03:47:13,451 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 03:47:13,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:13,451 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 03:47:13,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:47:13,451 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 03:47:13,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:13,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1223095237, now seen corresponding path program 3 times [2024-06-28 03:47:13,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:13,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108369062] [2024-06-28 03:47:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:13,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:14,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:14,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108369062] [2024-06-28 03:47:14,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108369062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:14,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:14,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:14,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837959214] [2024-06-28 03:47:14,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:14,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:14,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:14,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:14,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:14,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:14,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 372 transitions, 5031 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 03:47:14,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:14,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:14,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:15,244 INFO L124 PetriNetUnfolderBase]: 2972/4651 cut-off events. [2024-06-28 03:47:15,244 INFO L125 PetriNetUnfolderBase]: For 242911/242911 co-relation queries the response was YES. [2024-06-28 03:47:15,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37965 conditions, 4651 events. 2972/4651 cut-off events. For 242911/242911 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26061 event pairs, 541 based on Foata normal form. 2/4643 useless extension candidates. Maximal degree in co-relation 37838. Up to 4440 conditions per place. [2024-06-28 03:47:15,298 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 349 selfloop transitions, 36 changer transitions 0/389 dead transitions. [2024-06-28 03:47:15,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 389 transitions, 5963 flow [2024-06-28 03:47:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:47:15,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 03:47:15,299 INFO L175 Difference]: Start difference. First operand has 274 places, 372 transitions, 5031 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:47:15,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 389 transitions, 5963 flow [2024-06-28 03:47:15,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 389 transitions, 5751 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:15,810 INFO L231 Difference]: Finished difference. Result has 277 places, 378 transitions, 5037 flow [2024-06-28 03:47:15,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5037, PETRI_PLACES=277, PETRI_TRANSITIONS=378} [2024-06-28 03:47:15,810 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-28 03:47:15,810 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 378 transitions, 5037 flow [2024-06-28 03:47:15,810 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 03:47:15,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:15,811 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 03:47:15,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:47:15,811 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 03:47:15,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1082151642, now seen corresponding path program 2 times [2024-06-28 03:47:15,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:15,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159993641] [2024-06-28 03:47:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:15,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:16,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:16,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159993641] [2024-06-28 03:47:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159993641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506888003] [2024-06-28 03:47:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:16,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:16,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:16,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:16,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:16,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 378 transitions, 5037 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 03:47:16,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:16,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:16,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:17,593 INFO L124 PetriNetUnfolderBase]: 2982/4671 cut-off events. [2024-06-28 03:47:17,594 INFO L125 PetriNetUnfolderBase]: For 251942/251942 co-relation queries the response was YES. [2024-06-28 03:47:17,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38473 conditions, 4671 events. 2982/4671 cut-off events. For 251942/251942 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26207 event pairs, 537 based on Foata normal form. 2/4663 useless extension candidates. Maximal degree in co-relation 38344. Up to 4411 conditions per place. [2024-06-28 03:47:17,650 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 345 selfloop transitions, 45 changer transitions 0/394 dead transitions. [2024-06-28 03:47:17,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 394 transitions, 6039 flow [2024-06-28 03:47:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:47:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:47:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:47:17,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:47:17,651 INFO L175 Difference]: Start difference. First operand has 277 places, 378 transitions, 5037 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:47:17,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 394 transitions, 6039 flow [2024-06-28 03:47:18,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 394 transitions, 5869 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 03:47:18,353 INFO L231 Difference]: Finished difference. Result has 279 places, 381 transitions, 5083 flow [2024-06-28 03:47:18,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4867, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5083, PETRI_PLACES=279, PETRI_TRANSITIONS=381} [2024-06-28 03:47:18,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 03:47:18,355 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 381 transitions, 5083 flow [2024-06-28 03:47:18,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:18,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:18,356 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 03:47:18,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:47:18,356 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:47:18,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1421241789, now seen corresponding path program 10 times [2024-06-28 03:47:18,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:18,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426448947] [2024-06-28 03:47:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:18,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:19,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426448947] [2024-06-28 03:47:19,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426448947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:19,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:19,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:19,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765513168] [2024-06-28 03:47:19,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:19,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:19,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:19,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:19,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 381 transitions, 5083 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 03:47:19,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:19,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:19,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:20,147 INFO L124 PetriNetUnfolderBase]: 3002/4700 cut-off events. [2024-06-28 03:47:20,147 INFO L125 PetriNetUnfolderBase]: For 264849/264852 co-relation queries the response was YES. [2024-06-28 03:47:20,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39156 conditions, 4700 events. 3002/4700 cut-off events. For 264849/264852 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 26428 event pairs, 520 based on Foata normal form. 6/4699 useless extension candidates. Maximal degree in co-relation 39026. Up to 4468 conditions per place. [2024-06-28 03:47:20,204 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 359 selfloop transitions, 38 changer transitions 0/401 dead transitions. [2024-06-28 03:47:20,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 401 transitions, 6127 flow [2024-06-28 03:47:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:47:20,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:47:20,206 INFO L175 Difference]: Start difference. First operand has 279 places, 381 transitions, 5083 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:47:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 401 transitions, 6127 flow [2024-06-28 03:47:20,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 401 transitions, 5959 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:20,848 INFO L231 Difference]: Finished difference. Result has 281 places, 385 transitions, 5134 flow [2024-06-28 03:47:20,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4915, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5134, PETRI_PLACES=281, PETRI_TRANSITIONS=385} [2024-06-28 03:47:20,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-28 03:47:20,849 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 385 transitions, 5134 flow [2024-06-28 03:47:20,849 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 03:47:20,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:20,849 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 03:47:20,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:47:20,850 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 03:47:20,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1421478939, now seen corresponding path program 11 times [2024-06-28 03:47:20,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:20,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462516716] [2024-06-28 03:47:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:20,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:21,552 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 03:47:21,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:21,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462516716] [2024-06-28 03:47:21,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462516716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:21,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:21,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:21,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731280165] [2024-06-28 03:47:21,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:21,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:21,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:21,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:21,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 385 transitions, 5134 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 03:47:21,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:21,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:21,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:22,621 INFO L124 PetriNetUnfolderBase]: 3012/4714 cut-off events. [2024-06-28 03:47:22,622 INFO L125 PetriNetUnfolderBase]: For 252249/252252 co-relation queries the response was YES. [2024-06-28 03:47:22,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38861 conditions, 4714 events. 3012/4714 cut-off events. For 252249/252252 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26489 event pairs, 518 based on Foata normal form. 4/4711 useless extension candidates. Maximal degree in co-relation 38731. Up to 4428 conditions per place. [2024-06-28 03:47:22,694 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 349 selfloop transitions, 51 changer transitions 0/404 dead transitions. [2024-06-28 03:47:22,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 404 transitions, 6243 flow [2024-06-28 03:47:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:47:22,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 03:47:22,695 INFO L175 Difference]: Start difference. First operand has 281 places, 385 transitions, 5134 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:47:22,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 404 transitions, 6243 flow [2024-06-28 03:47:23,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 404 transitions, 6068 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:23,278 INFO L231 Difference]: Finished difference. Result has 283 places, 388 transitions, 5164 flow [2024-06-28 03:47:23,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4959, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5164, PETRI_PLACES=283, PETRI_TRANSITIONS=388} [2024-06-28 03:47:23,279 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-28 03:47:23,279 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 388 transitions, 5164 flow [2024-06-28 03:47:23,279 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 03:47:23,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:23,279 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 03:47:23,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:47:23,280 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 03:47:23,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1244110269, now seen corresponding path program 12 times [2024-06-28 03:47:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:23,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239045750] [2024-06-28 03:47:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:23,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:23,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:23,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239045750] [2024-06-28 03:47:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239045750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:23,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:23,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062539506] [2024-06-28 03:47:23,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:23,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:23,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:24,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:24,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 388 transitions, 5164 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 03:47:24,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:24,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:24,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:25,014 INFO L124 PetriNetUnfolderBase]: 3000/4696 cut-off events. [2024-06-28 03:47:25,014 INFO L125 PetriNetUnfolderBase]: For 253478/253481 co-relation queries the response was YES. [2024-06-28 03:47:25,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38368 conditions, 4696 events. 3000/4696 cut-off events. For 253478/253481 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26382 event pairs, 532 based on Foata normal form. 6/4695 useless extension candidates. Maximal degree in co-relation 38237. Up to 4502 conditions per place. [2024-06-28 03:47:25,074 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 368 selfloop transitions, 30 changer transitions 0/402 dead transitions. [2024-06-28 03:47:25,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 402 transitions, 6044 flow [2024-06-28 03:47:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:47:25,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:47:25,076 INFO L175 Difference]: Start difference. First operand has 283 places, 388 transitions, 5164 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:47:25,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 402 transitions, 6044 flow [2024-06-28 03:47:25,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 402 transitions, 5743 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:25,746 INFO L231 Difference]: Finished difference. Result has 285 places, 388 transitions, 4930 flow [2024-06-28 03:47:25,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4863, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4930, PETRI_PLACES=285, PETRI_TRANSITIONS=388} [2024-06-28 03:47:25,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-28 03:47:25,747 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 388 transitions, 4930 flow [2024-06-28 03:47:25,747 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 03:47:25,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:25,747 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 03:47:25,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:47:25,748 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 03:47:25,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1678187986, now seen corresponding path program 3 times [2024-06-28 03:47:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75141857] [2024-06-28 03:47:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:25,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:26,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:26,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75141857] [2024-06-28 03:47:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75141857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:26,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:26,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858527584] [2024-06-28 03:47:26,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:26,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:26,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:26,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:26,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:26,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 388 transitions, 4930 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 03:47:26,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:26,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:26,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:27,680 INFO L124 PetriNetUnfolderBase]: 2994/4689 cut-off events. [2024-06-28 03:47:27,680 INFO L125 PetriNetUnfolderBase]: For 250662/250662 co-relation queries the response was YES. [2024-06-28 03:47:27,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37803 conditions, 4689 events. 2994/4689 cut-off events. For 250662/250662 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26398 event pairs, 522 based on Foata normal form. 2/4681 useless extension candidates. Maximal degree in co-relation 37671. Up to 4370 conditions per place. [2024-06-28 03:47:27,736 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 337 selfloop transitions, 64 changer transitions 0/405 dead transitions. [2024-06-28 03:47:27,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 405 transitions, 5966 flow [2024-06-28 03:47:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:47:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:47:27,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:47:27,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-28 03:47:27,737 INFO L175 Difference]: Start difference. First operand has 285 places, 388 transitions, 4930 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:47:27,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 405 transitions, 5966 flow [2024-06-28 03:47:28,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 405 transitions, 5879 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:28,301 INFO L231 Difference]: Finished difference. Result has 286 places, 391 transitions, 5093 flow [2024-06-28 03:47:28,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4843, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5093, PETRI_PLACES=286, PETRI_TRANSITIONS=391} [2024-06-28 03:47:28,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-28 03:47:28,302 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 391 transitions, 5093 flow [2024-06-28 03:47:28,302 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 03:47:28,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:28,302 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 03:47:28,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:47:28,302 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 03:47:28,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash 252143065, now seen corresponding path program 1 times [2024-06-28 03:47:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490309269] [2024-06-28 03:47:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:28,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:29,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:29,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490309269] [2024-06-28 03:47:29,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490309269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:29,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:29,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:29,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294939960] [2024-06-28 03:47:29,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:29,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:29,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:29,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:29,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 391 transitions, 5093 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 03:47:29,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:29,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:29,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:30,429 INFO L124 PetriNetUnfolderBase]: 3002/4697 cut-off events. [2024-06-28 03:47:30,430 INFO L125 PetriNetUnfolderBase]: For 261032/261032 co-relation queries the response was YES. [2024-06-28 03:47:30,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38376 conditions, 4697 events. 3002/4697 cut-off events. For 261032/261032 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 26370 event pairs, 543 based on Foata normal form. 2/4696 useless extension candidates. Maximal degree in co-relation 38243. Up to 4510 conditions per place. [2024-06-28 03:47:30,485 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 379 selfloop transitions, 30 changer transitions 0/413 dead transitions. [2024-06-28 03:47:30,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 413 transitions, 6059 flow [2024-06-28 03:47:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:47:30,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:47:30,487 INFO L175 Difference]: Start difference. First operand has 286 places, 391 transitions, 5093 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:47:30,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 413 transitions, 6059 flow [2024-06-28 03:47:31,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 413 transitions, 5851 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:31,063 INFO L231 Difference]: Finished difference. Result has 288 places, 393 transitions, 5012 flow [2024-06-28 03:47:31,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5012, PETRI_PLACES=288, PETRI_TRANSITIONS=393} [2024-06-28 03:47:31,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 03:47:31,063 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 393 transitions, 5012 flow [2024-06-28 03:47:31,064 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 03:47:31,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:31,064 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 03:47:31,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:47:31,064 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 03:47:31,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash 252137113, now seen corresponding path program 1 times [2024-06-28 03:47:31,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:31,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471150805] [2024-06-28 03:47:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:31,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:32,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:32,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471150805] [2024-06-28 03:47:32,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471150805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:32,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750500272] [2024-06-28 03:47:32,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:32,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:32,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:32,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:32,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:32,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:32,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 393 transitions, 5012 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 03:47:32,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:32,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:32,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:33,420 INFO L124 PetriNetUnfolderBase]: 3004/4700 cut-off events. [2024-06-28 03:47:33,420 INFO L125 PetriNetUnfolderBase]: For 259139/259139 co-relation queries the response was YES. [2024-06-28 03:47:33,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38246 conditions, 4700 events. 3004/4700 cut-off events. For 259139/259139 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26401 event pairs, 544 based on Foata normal form. 2/4699 useless extension candidates. Maximal degree in co-relation 38113. Up to 4472 conditions per place. [2024-06-28 03:47:33,475 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 372 selfloop transitions, 42 changer transitions 0/418 dead transitions. [2024-06-28 03:47:33,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 418 transitions, 6046 flow [2024-06-28 03:47:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:47:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:47:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:47:33,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:47:33,477 INFO L175 Difference]: Start difference. First operand has 288 places, 393 transitions, 5012 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:47:33,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 418 transitions, 6046 flow [2024-06-28 03:47:34,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 418 transitions, 5935 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:34,057 INFO L231 Difference]: Finished difference. Result has 291 places, 396 transitions, 5089 flow [2024-06-28 03:47:34,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4901, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5089, PETRI_PLACES=291, PETRI_TRANSITIONS=396} [2024-06-28 03:47:34,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-28 03:47:34,058 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 396 transitions, 5089 flow [2024-06-28 03:47:34,058 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 03:47:34,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:34,059 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 03:47:34,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:47:34,059 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 03:47:34,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash -362079239, now seen corresponding path program 2 times [2024-06-28 03:47:34,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:34,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676290779] [2024-06-28 03:47:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:34,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676290779] [2024-06-28 03:47:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676290779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:35,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:35,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876837576] [2024-06-28 03:47:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:35,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:35,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:35,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:35,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 396 transitions, 5089 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 03:47:35,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:35,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:35,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:36,093 INFO L124 PetriNetUnfolderBase]: 3012/4712 cut-off events. [2024-06-28 03:47:36,094 INFO L125 PetriNetUnfolderBase]: For 267533/267533 co-relation queries the response was YES. [2024-06-28 03:47:36,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38758 conditions, 4712 events. 3012/4712 cut-off events. For 267533/267533 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 26479 event pairs, 552 based on Foata normal form. 2/4711 useless extension candidates. Maximal degree in co-relation 38624. Up to 4548 conditions per place. [2024-06-28 03:47:36,151 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 389 selfloop transitions, 22 changer transitions 0/415 dead transitions. [2024-06-28 03:47:36,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 415 transitions, 6053 flow [2024-06-28 03:47:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:47:36,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:47:36,152 INFO L175 Difference]: Start difference. First operand has 291 places, 396 transitions, 5089 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:47:36,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 415 transitions, 6053 flow [2024-06-28 03:47:36,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 415 transitions, 5887 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 03:47:36,812 INFO L231 Difference]: Finished difference. Result has 292 places, 398 transitions, 5040 flow [2024-06-28 03:47:36,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4923, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5040, PETRI_PLACES=292, PETRI_TRANSITIONS=398} [2024-06-28 03:47:36,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 03:47:36,813 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 398 transitions, 5040 flow [2024-06-28 03:47:36,813 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 03:47:36,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:36,813 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 03:47:36,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:47:36,813 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 03:47:36,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 396242845, now seen corresponding path program 3 times [2024-06-28 03:47:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:36,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922875953] [2024-06-28 03:47:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:36,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:37,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:37,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922875953] [2024-06-28 03:47:37,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922875953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:37,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:37,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:47:37,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650893155] [2024-06-28 03:47:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:37,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:47:37,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:47:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:47:37,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:37,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 398 transitions, 5040 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 03:47:37,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:37,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:37,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:38,859 INFO L124 PetriNetUnfolderBase]: 3020/4724 cut-off events. [2024-06-28 03:47:38,859 INFO L125 PetriNetUnfolderBase]: For 275040/275040 co-relation queries the response was YES. [2024-06-28 03:47:38,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38946 conditions, 4724 events. 3020/4724 cut-off events. For 275040/275040 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 26552 event pairs, 552 based on Foata normal form. 2/4723 useless extension candidates. Maximal degree in co-relation 38811. Up to 4560 conditions per place. [2024-06-28 03:47:38,910 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 392 selfloop transitions, 21 changer transitions 0/417 dead transitions. [2024-06-28 03:47:38,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 417 transitions, 6002 flow [2024-06-28 03:47:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:47:38,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:47:38,912 INFO L175 Difference]: Start difference. First operand has 292 places, 398 transitions, 5040 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:47:38,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 417 transitions, 6002 flow [2024-06-28 03:47:39,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 417 transitions, 5901 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:39,544 INFO L231 Difference]: Finished difference. Result has 294 places, 400 transitions, 5058 flow [2024-06-28 03:47:39,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4939, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5058, PETRI_PLACES=294, PETRI_TRANSITIONS=400} [2024-06-28 03:47:39,545 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-28 03:47:39,545 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 400 transitions, 5058 flow [2024-06-28 03:47:39,545 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 03:47:39,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:39,545 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 03:47:39,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:47:39,545 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 03:47:39,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:39,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1354956043, now seen corresponding path program 4 times [2024-06-28 03:47:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:39,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298715429] [2024-06-28 03:47:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:40,343 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 03:47:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298715429] [2024-06-28 03:47:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298715429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:40,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:40,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363463050] [2024-06-28 03:47:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:40,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:40,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:40,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:40,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 400 transitions, 5058 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 03:47:40,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:40,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:40,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:41,505 INFO L124 PetriNetUnfolderBase]: 3028/4732 cut-off events. [2024-06-28 03:47:41,505 INFO L125 PetriNetUnfolderBase]: For 283208/283208 co-relation queries the response was YES. [2024-06-28 03:47:41,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39217 conditions, 4732 events. 3028/4732 cut-off events. For 283208/283208 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 26561 event pairs, 581 based on Foata normal form. 2/4731 useless extension candidates. Maximal degree in co-relation 39081. Up to 4579 conditions per place. [2024-06-28 03:47:41,556 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 390 selfloop transitions, 21 changer transitions 0/415 dead transitions. [2024-06-28 03:47:41,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 415 transitions, 5996 flow [2024-06-28 03:47:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 03:47:41,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 03:47:41,557 INFO L175 Difference]: Start difference. First operand has 294 places, 400 transitions, 5058 flow. Second operand 8 states and 126 transitions. [2024-06-28 03:47:41,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 415 transitions, 5996 flow [2024-06-28 03:47:42,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 415 transitions, 5893 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:42,194 INFO L231 Difference]: Finished difference. Result has 296 places, 402 transitions, 5078 flow [2024-06-28 03:47:42,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4955, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5078, PETRI_PLACES=296, PETRI_TRANSITIONS=402} [2024-06-28 03:47:42,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-28 03:47:42,195 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 402 transitions, 5078 flow [2024-06-28 03:47:42,195 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 03:47:42,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:42,195 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 03:47:42,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:47:42,196 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 03:47:42,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash 697289895, now seen corresponding path program 5 times [2024-06-28 03:47:42,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:42,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203559343] [2024-06-28 03:47:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:43,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:43,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203559343] [2024-06-28 03:47:43,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203559343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:43,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:43,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:43,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093787882] [2024-06-28 03:47:43,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:43,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:43,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:43,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:43,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 402 transitions, 5078 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 03:47:43,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:43,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:43,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:44,426 INFO L124 PetriNetUnfolderBase]: 3036/4744 cut-off events. [2024-06-28 03:47:44,426 INFO L125 PetriNetUnfolderBase]: For 291169/291169 co-relation queries the response was YES. [2024-06-28 03:47:44,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39486 conditions, 4744 events. 3036/4744 cut-off events. For 291169/291169 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 26662 event pairs, 581 based on Foata normal form. 2/4743 useless extension candidates. Maximal degree in co-relation 39349. Up to 4588 conditions per place. [2024-06-28 03:47:44,479 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 388 selfloop transitions, 25 changer transitions 0/417 dead transitions. [2024-06-28 03:47:44,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 417 transitions, 6034 flow [2024-06-28 03:47:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:44,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:47:44,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 03:47:44,481 INFO L175 Difference]: Start difference. First operand has 296 places, 402 transitions, 5078 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:47:44,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 417 transitions, 6034 flow [2024-06-28 03:47:45,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 417 transitions, 5927 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:45,131 INFO L231 Difference]: Finished difference. Result has 298 places, 404 transitions, 5107 flow [2024-06-28 03:47:45,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4971, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5107, PETRI_PLACES=298, PETRI_TRANSITIONS=404} [2024-06-28 03:47:45,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-28 03:47:45,132 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 404 transitions, 5107 flow [2024-06-28 03:47:45,132 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 03:47:45,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:45,132 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 03:47:45,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:47:45,132 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 03:47:45,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash 697556805, now seen corresponding path program 6 times [2024-06-28 03:47:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839542734] [2024-06-28 03:47:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:46,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:46,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839542734] [2024-06-28 03:47:46,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839542734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:46,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:46,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:46,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512161979] [2024-06-28 03:47:46,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:46,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:46,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:46,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:46,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:46,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 404 transitions, 5107 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 03:47:46,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:46,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:46,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:47,322 INFO L124 PetriNetUnfolderBase]: 3031/4739 cut-off events. [2024-06-28 03:47:47,322 INFO L125 PetriNetUnfolderBase]: For 294034/294034 co-relation queries the response was YES. [2024-06-28 03:47:47,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39379 conditions, 4739 events. 3031/4739 cut-off events. For 294034/294034 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 26635 event pairs, 576 based on Foata normal form. 2/4738 useless extension candidates. Maximal degree in co-relation 39241. Up to 4587 conditions per place. [2024-06-28 03:47:47,374 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 398 selfloop transitions, 17 changer transitions 0/419 dead transitions. [2024-06-28 03:47:47,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 419 transitions, 6051 flow [2024-06-28 03:47:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:47,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:47:47,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:47:47,375 INFO L175 Difference]: Start difference. First operand has 298 places, 404 transitions, 5107 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:47:47,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 419 transitions, 6051 flow [2024-06-28 03:47:48,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 419 transitions, 5933 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:48,079 INFO L231 Difference]: Finished difference. Result has 300 places, 406 transitions, 5112 flow [2024-06-28 03:47:48,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5112, PETRI_PLACES=300, PETRI_TRANSITIONS=406} [2024-06-28 03:47:48,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-28 03:47:48,083 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 406 transitions, 5112 flow [2024-06-28 03:47:48,083 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 03:47:48,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:48,083 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 03:47:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:47:48,083 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 03:47:48,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1428845252, now seen corresponding path program 1 times [2024-06-28 03:47:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:48,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503710668] [2024-06-28 03:47:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:49,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503710668] [2024-06-28 03:47:49,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503710668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:49,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:49,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:49,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829639107] [2024-06-28 03:47:49,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:49,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:49,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:49,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:49,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:49,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:49,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 406 transitions, 5112 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 03:47:49,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:49,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:49,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:50,263 INFO L124 PetriNetUnfolderBase]: 3028/4733 cut-off events. [2024-06-28 03:47:50,263 INFO L125 PetriNetUnfolderBase]: For 296553/296553 co-relation queries the response was YES. [2024-06-28 03:47:50,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39319 conditions, 4733 events. 3028/4733 cut-off events. For 296553/296553 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 26598 event pairs, 577 based on Foata normal form. 1/4731 useless extension candidates. Maximal degree in co-relation 39180. Up to 4574 conditions per place. [2024-06-28 03:47:50,321 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 390 selfloop transitions, 29 changer transitions 0/423 dead transitions. [2024-06-28 03:47:50,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 423 transitions, 6125 flow [2024-06-28 03:47:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 03:47:50,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:47:50,324 INFO L175 Difference]: Start difference. First operand has 300 places, 406 transitions, 5112 flow. Second operand 8 states and 128 transitions. [2024-06-28 03:47:50,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 423 transitions, 6125 flow [2024-06-28 03:47:51,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 423 transitions, 6018 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:51,019 INFO L231 Difference]: Finished difference. Result has 302 places, 410 transitions, 5192 flow [2024-06-28 03:47:51,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5192, PETRI_PLACES=302, PETRI_TRANSITIONS=410} [2024-06-28 03:47:51,027 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-28 03:47:51,027 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 410 transitions, 5192 flow [2024-06-28 03:47:51,027 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 03:47:51,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:51,027 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 03:47:51,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:47:51,028 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 03:47:51,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash -65374053, now seen corresponding path program 1 times [2024-06-28 03:47:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:51,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434492506] [2024-06-28 03:47:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:51,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434492506] [2024-06-28 03:47:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434492506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:52,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:52,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:52,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287235959] [2024-06-28 03:47:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:52,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:52,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:52,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:52,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:52,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 410 transitions, 5192 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 03:47:52,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:52,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:52,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:53,353 INFO L124 PetriNetUnfolderBase]: 3062/4786 cut-off events. [2024-06-28 03:47:53,353 INFO L125 PetriNetUnfolderBase]: For 315787/315787 co-relation queries the response was YES. [2024-06-28 03:47:53,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40504 conditions, 4786 events. 3062/4786 cut-off events. For 315787/315787 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 26924 event pairs, 491 based on Foata normal form. 2/4778 useless extension candidates. Maximal degree in co-relation 40364. Up to 4243 conditions per place. [2024-06-28 03:47:53,411 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 320 selfloop transitions, 115 changer transitions 0/439 dead transitions. [2024-06-28 03:47:53,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 439 transitions, 6616 flow [2024-06-28 03:47:53,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:47:53,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 03:47:53,413 INFO L175 Difference]: Start difference. First operand has 302 places, 410 transitions, 5192 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:47:53,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 439 transitions, 6616 flow [2024-06-28 03:47:54,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 439 transitions, 6476 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:54,239 INFO L231 Difference]: Finished difference. Result has 305 places, 417 transitions, 5636 flow [2024-06-28 03:47:54,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5052, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5636, PETRI_PLACES=305, PETRI_TRANSITIONS=417} [2024-06-28 03:47:54,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-28 03:47:54,240 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 417 transitions, 5636 flow [2024-06-28 03:47:54,240 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 03:47:54,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:54,240 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 03:47:54,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:47:54,240 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 03:47:54,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash 521538375, now seen corresponding path program 2 times [2024-06-28 03:47:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605013509] [2024-06-28 03:47:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:55,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605013509] [2024-06-28 03:47:55,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605013509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:55,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:55,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005904734] [2024-06-28 03:47:55,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:55,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:55,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:55,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:55,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 417 transitions, 5636 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 03:47:55,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:55,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:55,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:56,277 INFO L124 PetriNetUnfolderBase]: 3064/4789 cut-off events. [2024-06-28 03:47:56,278 INFO L125 PetriNetUnfolderBase]: For 328273/328273 co-relation queries the response was YES. [2024-06-28 03:47:56,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41561 conditions, 4789 events. 3064/4789 cut-off events. For 328273/328273 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 26945 event pairs, 499 based on Foata normal form. 2/4781 useless extension candidates. Maximal degree in co-relation 41419. Up to 4408 conditions per place. [2024-06-28 03:47:56,342 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 358 selfloop transitions, 76 changer transitions 0/438 dead transitions. [2024-06-28 03:47:56,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 438 transitions, 6771 flow [2024-06-28 03:47:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:47:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:47:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:47:56,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 03:47:56,343 INFO L175 Difference]: Start difference. First operand has 305 places, 417 transitions, 5636 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:47:56,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 438 transitions, 6771 flow [2024-06-28 03:47:57,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 438 transitions, 6525 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-28 03:47:57,187 INFO L231 Difference]: Finished difference. Result has 309 places, 420 transitions, 5698 flow [2024-06-28 03:47:57,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5698, PETRI_PLACES=309, PETRI_TRANSITIONS=420} [2024-06-28 03:47:57,188 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-28 03:47:57,188 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 420 transitions, 5698 flow [2024-06-28 03:47:57,188 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 03:47:57,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:57,189 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 03:47:57,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:47:57,189 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 03:47:57,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:57,189 INFO L85 PathProgramCache]: Analyzing trace with hash -786584603, now seen corresponding path program 3 times [2024-06-28 03:47:57,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:57,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728146798] [2024-06-28 03:47:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:57,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:58,268 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 03:47:58,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:58,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728146798] [2024-06-28 03:47:58,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728146798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:58,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:58,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:47:58,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615313912] [2024-06-28 03:47:58,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:58,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:47:58,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:47:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:47:58,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:47:58,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 420 transitions, 5698 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 03:47:58,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:58,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:47:58,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:59,553 INFO L124 PetriNetUnfolderBase]: 3090/4832 cut-off events. [2024-06-28 03:47:59,553 INFO L125 PetriNetUnfolderBase]: For 337259/337262 co-relation queries the response was YES. [2024-06-28 03:47:59,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42136 conditions, 4832 events. 3090/4832 cut-off events. For 337259/337262 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 27278 event pairs, 488 based on Foata normal form. 4/4829 useless extension candidates. Maximal degree in co-relation 41992. Up to 4387 conditions per place. [2024-06-28 03:47:59,620 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 367 selfloop transitions, 82 changer transitions 0/453 dead transitions. [2024-06-28 03:47:59,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 453 transitions, 7136 flow [2024-06-28 03:47:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:47:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:47:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:47:59,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:47:59,624 INFO L175 Difference]: Start difference. First operand has 309 places, 420 transitions, 5698 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:47:59,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 453 transitions, 7136 flow [2024-06-28 03:48:00,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 453 transitions, 6896 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:00,416 INFO L231 Difference]: Finished difference. Result has 311 places, 426 transitions, 5889 flow [2024-06-28 03:48:00,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5460, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5889, PETRI_PLACES=311, PETRI_TRANSITIONS=426} [2024-06-28 03:48:00,417 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-28 03:48:00,417 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 426 transitions, 5889 flow [2024-06-28 03:48:00,417 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 03:48:00,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:00,417 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 03:48:00,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:48:00,418 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 03:48:00,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:00,418 INFO L85 PathProgramCache]: Analyzing trace with hash -786256096, now seen corresponding path program 1 times [2024-06-28 03:48:00,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:00,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667948530] [2024-06-28 03:48:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667948530] [2024-06-28 03:48:01,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667948530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:01,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:01,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:01,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492001141] [2024-06-28 03:48:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:01,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:01,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:01,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:01,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:01,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:01,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 426 transitions, 5889 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 03:48:01,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:01,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:01,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:02,464 INFO L124 PetriNetUnfolderBase]: 3256/5064 cut-off events. [2024-06-28 03:48:02,465 INFO L125 PetriNetUnfolderBase]: For 379904/379907 co-relation queries the response was YES. [2024-06-28 03:48:02,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45260 conditions, 5064 events. 3256/5064 cut-off events. For 379904/379907 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 28608 event pairs, 493 based on Foata normal form. 10/5067 useless extension candidates. Maximal degree in co-relation 45116. Up to 4394 conditions per place. [2024-06-28 03:48:02,531 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 355 selfloop transitions, 110 changer transitions 0/469 dead transitions. [2024-06-28 03:48:02,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 469 transitions, 7509 flow [2024-06-28 03:48:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:48:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:48:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:48:02,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:48:02,532 INFO L175 Difference]: Start difference. First operand has 311 places, 426 transitions, 5889 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:48:02,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 469 transitions, 7509 flow [2024-06-28 03:48:03,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 469 transitions, 7239 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-28 03:48:03,454 INFO L231 Difference]: Finished difference. Result has 316 places, 442 transitions, 6319 flow [2024-06-28 03:48:03,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6319, PETRI_PLACES=316, PETRI_TRANSITIONS=442} [2024-06-28 03:48:03,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-28 03:48:03,455 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 442 transitions, 6319 flow [2024-06-28 03:48:03,455 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 03:48:03,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:03,456 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 03:48:03,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:48:03,456 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 03:48:03,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash -956645619, now seen corresponding path program 4 times [2024-06-28 03:48:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:03,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831929766] [2024-06-28 03:48:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:04,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:04,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:04,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831929766] [2024-06-28 03:48:04,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831929766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:04,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:04,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:04,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179313157] [2024-06-28 03:48:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:04,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:04,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:04,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:04,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:04,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:04,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 442 transitions, 6319 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 03:48:04,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:04,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:04,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:05,791 INFO L124 PetriNetUnfolderBase]: 3266/5082 cut-off events. [2024-06-28 03:48:05,792 INFO L125 PetriNetUnfolderBase]: For 383290/383293 co-relation queries the response was YES. [2024-06-28 03:48:05,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46676 conditions, 5082 events. 3266/5082 cut-off events. For 383290/383293 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 28773 event pairs, 493 based on Foata normal form. 4/5079 useless extension candidates. Maximal degree in co-relation 46529. Up to 4629 conditions per place. [2024-06-28 03:48:05,864 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 381 selfloop transitions, 84 changer transitions 0/469 dead transitions. [2024-06-28 03:48:05,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 469 transitions, 7619 flow [2024-06-28 03:48:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:48:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:48:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:48:05,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 03:48:05,865 INFO L175 Difference]: Start difference. First operand has 316 places, 442 transitions, 6319 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:48:05,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 469 transitions, 7619 flow [2024-06-28 03:48:06,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 469 transitions, 7418 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-28 03:48:06,845 INFO L231 Difference]: Finished difference. Result has 320 places, 445 transitions, 6382 flow [2024-06-28 03:48:06,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6120, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6382, PETRI_PLACES=320, PETRI_TRANSITIONS=445} [2024-06-28 03:48:06,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-28 03:48:06,846 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 445 transitions, 6382 flow [2024-06-28 03:48:06,846 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 03:48:06,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:06,846 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 03:48:06,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:48:06,846 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 03:48:06,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash -895962788, now seen corresponding path program 1 times [2024-06-28 03:48:06,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:06,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630503202] [2024-06-28 03:48:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:06,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:07,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:07,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630503202] [2024-06-28 03:48:07,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630503202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:07,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:07,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500679730] [2024-06-28 03:48:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:07,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:07,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:08,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:08,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 445 transitions, 6382 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 03:48:08,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:08,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:08,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:09,384 INFO L124 PetriNetUnfolderBase]: 3355/5213 cut-off events. [2024-06-28 03:48:09,384 INFO L125 PetriNetUnfolderBase]: For 407047/407047 co-relation queries the response was YES. [2024-06-28 03:48:09,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47808 conditions, 5213 events. 3355/5213 cut-off events. For 407047/407047 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 29593 event pairs, 559 based on Foata normal form. 12/5220 useless extension candidates. Maximal degree in co-relation 47660. Up to 4929 conditions per place. [2024-06-28 03:48:09,450 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 442 selfloop transitions, 36 changer transitions 0/482 dead transitions. [2024-06-28 03:48:09,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 482 transitions, 7820 flow [2024-06-28 03:48:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:48:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:48:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 03:48:09,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:48:09,451 INFO L175 Difference]: Start difference. First operand has 320 places, 445 transitions, 6382 flow. Second operand 10 states and 165 transitions. [2024-06-28 03:48:09,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 482 transitions, 7820 flow [2024-06-28 03:48:10,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 482 transitions, 7602 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:48:10,321 INFO L231 Difference]: Finished difference. Result has 327 places, 455 transitions, 6485 flow [2024-06-28 03:48:10,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6180, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6485, PETRI_PLACES=327, PETRI_TRANSITIONS=455} [2024-06-28 03:48:10,322 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 03:48:10,322 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 455 transitions, 6485 flow [2024-06-28 03:48:10,322 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 03:48:10,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:10,322 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 03:48:10,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:48:10,322 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 03:48:10,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2116403881, now seen corresponding path program 5 times [2024-06-28 03:48:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:10,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405537410] [2024-06-28 03:48:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:10,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:11,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:11,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405537410] [2024-06-28 03:48:11,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405537410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:11,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:11,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:11,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773574352] [2024-06-28 03:48:11,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:11,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:11,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:11,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:11,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:11,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:11,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 455 transitions, 6485 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 03:48:11,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:11,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:11,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:12,921 INFO L124 PetriNetUnfolderBase]: 3365/5234 cut-off events. [2024-06-28 03:48:12,922 INFO L125 PetriNetUnfolderBase]: For 392403/392406 co-relation queries the response was YES. [2024-06-28 03:48:12,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47999 conditions, 5234 events. 3365/5234 cut-off events. For 392403/392406 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 29785 event pairs, 511 based on Foata normal form. 4/5230 useless extension candidates. Maximal degree in co-relation 47847. Up to 4880 conditions per place. [2024-06-28 03:48:12,990 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 409 selfloop transitions, 66 changer transitions 0/479 dead transitions. [2024-06-28 03:48:12,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 479 transitions, 7686 flow [2024-06-28 03:48:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:48:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:48:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:48:12,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:48:12,991 INFO L175 Difference]: Start difference. First operand has 327 places, 455 transitions, 6485 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:48:12,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 479 transitions, 7686 flow [2024-06-28 03:48:14,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 479 transitions, 7613 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:48:14,043 INFO L231 Difference]: Finished difference. Result has 331 places, 458 transitions, 6647 flow [2024-06-28 03:48:14,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6412, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6647, PETRI_PLACES=331, PETRI_TRANSITIONS=458} [2024-06-28 03:48:14,043 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-28 03:48:14,043 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 458 transitions, 6647 flow [2024-06-28 03:48:14,043 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 03:48:14,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:14,044 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 03:48:14,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:48:14,044 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 03:48:14,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash 481563296, now seen corresponding path program 2 times [2024-06-28 03:48:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:14,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470204069] [2024-06-28 03:48:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:14,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470204069] [2024-06-28 03:48:14,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470204069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:14,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:14,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098787959] [2024-06-28 03:48:14,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:14,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:14,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:14,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:15,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:15,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 458 transitions, 6647 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 03:48:15,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:15,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:15,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:16,289 INFO L124 PetriNetUnfolderBase]: 3405/5290 cut-off events. [2024-06-28 03:48:16,289 INFO L125 PetriNetUnfolderBase]: For 416635/416638 co-relation queries the response was YES. [2024-06-28 03:48:16,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48828 conditions, 5290 events. 3405/5290 cut-off events. For 416635/416638 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 30082 event pairs, 513 based on Foata normal form. 10/5292 useless extension candidates. Maximal degree in co-relation 48675. Up to 4896 conditions per place. [2024-06-28 03:48:16,363 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 408 selfloop transitions, 72 changer transitions 0/484 dead transitions. [2024-06-28 03:48:16,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 484 transitions, 7915 flow [2024-06-28 03:48:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:48:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:48:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:48:16,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 03:48:16,364 INFO L175 Difference]: Start difference. First operand has 331 places, 458 transitions, 6647 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:48:16,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 484 transitions, 7915 flow [2024-06-28 03:48:17,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 484 transitions, 7711 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:17,440 INFO L231 Difference]: Finished difference. Result has 333 places, 462 transitions, 6740 flow [2024-06-28 03:48:17,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6443, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6740, PETRI_PLACES=333, PETRI_TRANSITIONS=462} [2024-06-28 03:48:17,441 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-28 03:48:17,441 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 462 transitions, 6740 flow [2024-06-28 03:48:17,441 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 03:48:17,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:17,441 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 03:48:17,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:48:17,442 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 03:48:17,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1693536832, now seen corresponding path program 2 times [2024-06-28 03:48:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753338360] [2024-06-28 03:48:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:18,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:18,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753338360] [2024-06-28 03:48:18,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753338360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:18,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:18,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:18,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743684333] [2024-06-28 03:48:18,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:18,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:18,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:18,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:18,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:18,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:18,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 462 transitions, 6740 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 03:48:18,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:18,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:18,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:19,542 INFO L124 PetriNetUnfolderBase]: 3433/5338 cut-off events. [2024-06-28 03:48:19,543 INFO L125 PetriNetUnfolderBase]: For 427120/427123 co-relation queries the response was YES. [2024-06-28 03:48:19,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49423 conditions, 5338 events. 3433/5338 cut-off events. For 427120/427123 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 30424 event pairs, 579 based on Foata normal form. 10/5340 useless extension candidates. Maximal degree in co-relation 49269. Up to 5095 conditions per place. [2024-06-28 03:48:19,619 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 446 selfloop transitions, 33 changer transitions 0/483 dead transitions. [2024-06-28 03:48:19,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 483 transitions, 7942 flow [2024-06-28 03:48:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:48:19,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:48:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 03:48:19,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-28 03:48:19,620 INFO L175 Difference]: Start difference. First operand has 333 places, 462 transitions, 6740 flow. Second operand 7 states and 118 transitions. [2024-06-28 03:48:19,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 483 transitions, 7942 flow [2024-06-28 03:48:20,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 483 transitions, 7713 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:20,734 INFO L231 Difference]: Finished difference. Result has 335 places, 468 transitions, 6746 flow [2024-06-28 03:48:20,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6511, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6746, PETRI_PLACES=335, PETRI_TRANSITIONS=468} [2024-06-28 03:48:20,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-06-28 03:48:20,735 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 468 transitions, 6746 flow [2024-06-28 03:48:20,735 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 03:48:20,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:20,735 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 03:48:20,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:48:20,735 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 03:48:20,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1693833502, now seen corresponding path program 3 times [2024-06-28 03:48:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:20,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236312789] [2024-06-28 03:48:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:21,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:21,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236312789] [2024-06-28 03:48:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236312789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:21,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354008735] [2024-06-28 03:48:21,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:21,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:21,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:21,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 468 transitions, 6746 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 03:48:21,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:21,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:21,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:22,890 INFO L124 PetriNetUnfolderBase]: 3482/5417 cut-off events. [2024-06-28 03:48:22,890 INFO L125 PetriNetUnfolderBase]: For 453420/453423 co-relation queries the response was YES. [2024-06-28 03:48:22,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50209 conditions, 5417 events. 3482/5417 cut-off events. For 453420/453423 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 31078 event pairs, 594 based on Foata normal form. 14/5423 useless extension candidates. Maximal degree in co-relation 50052. Up to 5105 conditions per place. [2024-06-28 03:48:22,971 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 442 selfloop transitions, 44 changer transitions 0/490 dead transitions. [2024-06-28 03:48:22,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 490 transitions, 8027 flow [2024-06-28 03:48:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:48:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:48:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:48:22,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 03:48:22,972 INFO L175 Difference]: Start difference. First operand has 335 places, 468 transitions, 6746 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:48:22,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 490 transitions, 8027 flow [2024-06-28 03:48:23,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 490 transitions, 7912 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 03:48:24,001 INFO L231 Difference]: Finished difference. Result has 340 places, 472 transitions, 6841 flow [2024-06-28 03:48:24,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6631, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6841, PETRI_PLACES=340, PETRI_TRANSITIONS=472} [2024-06-28 03:48:24,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-28 03:48:24,001 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 472 transitions, 6841 flow [2024-06-28 03:48:24,001 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 03:48:24,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:24,002 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 03:48:24,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:48:24,002 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 03:48:24,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:24,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1702114873, now seen corresponding path program 6 times [2024-06-28 03:48:24,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:24,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186498487] [2024-06-28 03:48:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:24,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:25,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:25,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186498487] [2024-06-28 03:48:25,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186498487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:25,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:25,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:25,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380527357] [2024-06-28 03:48:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:25,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:25,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:25,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:25,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 472 transitions, 6841 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 03:48:25,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:25,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:25,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:26,708 INFO L124 PetriNetUnfolderBase]: 3476/5408 cut-off events. [2024-06-28 03:48:26,708 INFO L125 PetriNetUnfolderBase]: For 430034/430034 co-relation queries the response was YES. [2024-06-28 03:48:26,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50075 conditions, 5408 events. 3476/5408 cut-off events. For 430034/430034 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 31032 event pairs, 596 based on Foata normal form. 2/5399 useless extension candidates. Maximal degree in co-relation 49916. Up to 5089 conditions per place. [2024-06-28 03:48:26,791 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 428 selfloop transitions, 54 changer transitions 0/486 dead transitions. [2024-06-28 03:48:26,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 486 transitions, 7905 flow [2024-06-28 03:48:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:48:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:48:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:48:26,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:48:26,792 INFO L175 Difference]: Start difference. First operand has 340 places, 472 transitions, 6841 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:48:26,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 486 transitions, 7905 flow [2024-06-28 03:48:27,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 486 transitions, 7764 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 03:48:27,989 INFO L231 Difference]: Finished difference. Result has 344 places, 472 transitions, 6814 flow [2024-06-28 03:48:27,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6700, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6814, PETRI_PLACES=344, PETRI_TRANSITIONS=472} [2024-06-28 03:48:27,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-28 03:48:27,990 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 472 transitions, 6814 flow [2024-06-28 03:48:27,990 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 03:48:27,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:27,990 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 03:48:27,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:48:27,990 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 03:48:27,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:27,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1223600518, now seen corresponding path program 1 times [2024-06-28 03:48:27,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:27,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323932841] [2024-06-28 03:48:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:27,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323932841] [2024-06-28 03:48:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323932841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:28,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:28,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467281980] [2024-06-28 03:48:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:29,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:29,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 472 transitions, 6814 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 03:48:29,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:29,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:29,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:30,364 INFO L124 PetriNetUnfolderBase]: 3478/5412 cut-off events. [2024-06-28 03:48:30,364 INFO L125 PetriNetUnfolderBase]: For 434970/434973 co-relation queries the response was YES. [2024-06-28 03:48:30,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50007 conditions, 5412 events. 3478/5412 cut-off events. For 434970/434973 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 31087 event pairs, 587 based on Foata normal form. 4/5408 useless extension candidates. Maximal degree in co-relation 49847. Up to 5133 conditions per place. [2024-06-28 03:48:30,455 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 429 selfloop transitions, 55 changer transitions 0/488 dead transitions. [2024-06-28 03:48:30,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 488 transitions, 7993 flow [2024-06-28 03:48:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:48:30,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:48:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:48:30,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:48:30,456 INFO L175 Difference]: Start difference. First operand has 344 places, 472 transitions, 6814 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:48:30,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 488 transitions, 7993 flow [2024-06-28 03:48:31,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 488 transitions, 7877 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:48:31,619 INFO L231 Difference]: Finished difference. Result has 345 places, 475 transitions, 6954 flow [2024-06-28 03:48:31,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6698, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6954, PETRI_PLACES=345, PETRI_TRANSITIONS=475} [2024-06-28 03:48:31,620 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 03:48:31,620 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 475 transitions, 6954 flow [2024-06-28 03:48:31,620 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 03:48:31,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:31,620 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 03:48:31,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:48:31,621 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 03:48:31,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1215319612, now seen corresponding path program 3 times [2024-06-28 03:48:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444748380] [2024-06-28 03:48:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:31,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:32,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:32,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444748380] [2024-06-28 03:48:32,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444748380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:32,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:32,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:32,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906867124] [2024-06-28 03:48:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:32,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:32,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:32,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:32,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 475 transitions, 6954 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 03:48:32,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:32,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:32,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:33,926 INFO L124 PetriNetUnfolderBase]: 3476/5407 cut-off events. [2024-06-28 03:48:33,926 INFO L125 PetriNetUnfolderBase]: For 444073/444073 co-relation queries the response was YES. [2024-06-28 03:48:33,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49851 conditions, 5407 events. 3476/5407 cut-off events. For 444073/444073 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 31080 event pairs, 582 based on Foata normal form. 6/5402 useless extension candidates. Maximal degree in co-relation 49690. Up to 5066 conditions per place. [2024-06-28 03:48:34,006 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 431 selfloop transitions, 60 changer transitions 0/495 dead transitions. [2024-06-28 03:48:34,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 495 transitions, 8265 flow [2024-06-28 03:48:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:48:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:48:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:48:34,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:48:34,008 INFO L175 Difference]: Start difference. First operand has 345 places, 475 transitions, 6954 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:48:34,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 495 transitions, 8265 flow [2024-06-28 03:48:35,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 495 transitions, 8084 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 03:48:35,355 INFO L231 Difference]: Finished difference. Result has 348 places, 481 transitions, 7148 flow [2024-06-28 03:48:35,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6773, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7148, PETRI_PLACES=348, PETRI_TRANSITIONS=481} [2024-06-28 03:48:35,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-28 03:48:35,355 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 481 transitions, 7148 flow [2024-06-28 03:48:35,355 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 03:48:35,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:35,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:35,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:48:35,356 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 03:48:35,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 366925831, now seen corresponding path program 7 times [2024-06-28 03:48:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:35,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553956874] [2024-06-28 03:48:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:36,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:36,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553956874] [2024-06-28 03:48:36,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553956874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:36,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:36,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:36,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264081697] [2024-06-28 03:48:36,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:36,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:36,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:36,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:36,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 481 transitions, 7148 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 03:48:36,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:36,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:36,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:38,030 INFO L124 PetriNetUnfolderBase]: 3502/5460 cut-off events. [2024-06-28 03:48:38,030 INFO L125 PetriNetUnfolderBase]: For 453967/453970 co-relation queries the response was YES. [2024-06-28 03:48:38,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51115 conditions, 5460 events. 3502/5460 cut-off events. For 453967/453970 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 31538 event pairs, 581 based on Foata normal form. 4/5456 useless extension candidates. Maximal degree in co-relation 50953. Up to 5103 conditions per place. [2024-06-28 03:48:38,112 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 461 selfloop transitions, 55 changer transitions 0/520 dead transitions. [2024-06-28 03:48:38,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 520 transitions, 8860 flow [2024-06-28 03:48:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:48:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:48:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 03:48:38,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:48:38,113 INFO L175 Difference]: Start difference. First operand has 348 places, 481 transitions, 7148 flow. Second operand 10 states and 175 transitions. [2024-06-28 03:48:38,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 520 transitions, 8860 flow [2024-06-28 03:48:39,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 520 transitions, 8568 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-28 03:48:39,421 INFO L231 Difference]: Finished difference. Result has 352 places, 487 transitions, 7258 flow [2024-06-28 03:48:39,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6856, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7258, PETRI_PLACES=352, PETRI_TRANSITIONS=487} [2024-06-28 03:48:39,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 03:48:39,422 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 487 transitions, 7258 flow [2024-06-28 03:48:39,422 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 03:48:39,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:39,422 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 03:48:39,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:48:39,423 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 03:48:39,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash 367254338, now seen corresponding path program 4 times [2024-06-28 03:48:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:39,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991490284] [2024-06-28 03:48:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:39,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:40,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:40,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991490284] [2024-06-28 03:48:40,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991490284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:40,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:40,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:40,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449191249] [2024-06-28 03:48:40,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:40,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:40,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:40,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:40,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 487 transitions, 7258 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 03:48:40,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:40,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:40,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:41,940 INFO L124 PetriNetUnfolderBase]: 3554/5530 cut-off events. [2024-06-28 03:48:41,940 INFO L125 PetriNetUnfolderBase]: For 492979/492982 co-relation queries the response was YES. [2024-06-28 03:48:41,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52550 conditions, 5530 events. 3554/5530 cut-off events. For 492979/492982 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 31870 event pairs, 581 based on Foata normal form. 6/5528 useless extension candidates. Maximal degree in co-relation 52387. Up to 5137 conditions per place. [2024-06-28 03:48:42,018 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 464 selfloop transitions, 61 changer transitions 0/529 dead transitions. [2024-06-28 03:48:42,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 529 transitions, 9062 flow [2024-06-28 03:48:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:48:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:48:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 03:48:42,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:48:42,019 INFO L175 Difference]: Start difference. First operand has 352 places, 487 transitions, 7258 flow. Second operand 10 states and 175 transitions. [2024-06-28 03:48:42,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 529 transitions, 9062 flow [2024-06-28 03:48:43,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 529 transitions, 8768 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:43,373 INFO L231 Difference]: Finished difference. Result has 357 places, 499 transitions, 7499 flow [2024-06-28 03:48:43,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6972, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7499, PETRI_PLACES=357, PETRI_TRANSITIONS=499} [2024-06-28 03:48:43,373 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 03:48:43,374 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 499 transitions, 7499 flow [2024-06-28 03:48:43,374 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 03:48:43,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:43,374 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 03:48:43,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:48:43,374 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 03:48:43,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash -778161384, now seen corresponding path program 5 times [2024-06-28 03:48:43,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:43,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046273168] [2024-06-28 03:48:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:43,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046273168] [2024-06-28 03:48:44,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046273168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:44,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:44,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:44,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653955060] [2024-06-28 03:48:44,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:44,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:44,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:44,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:44,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:44,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:44,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 499 transitions, 7499 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 03:48:44,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:44,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:44,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:45,896 INFO L124 PetriNetUnfolderBase]: 3564/5540 cut-off events. [2024-06-28 03:48:45,896 INFO L125 PetriNetUnfolderBase]: For 496859/496862 co-relation queries the response was YES. [2024-06-28 03:48:45,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53041 conditions, 5540 events. 3564/5540 cut-off events. For 496859/496862 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 31899 event pairs, 597 based on Foata normal form. 4/5536 useless extension candidates. Maximal degree in co-relation 52875. Up to 5075 conditions per place. [2024-06-28 03:48:45,975 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 448 selfloop transitions, 80 changer transitions 0/532 dead transitions. [2024-06-28 03:48:45,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 532 transitions, 8872 flow [2024-06-28 03:48:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:48:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:48:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:48:45,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 03:48:45,976 INFO L175 Difference]: Start difference. First operand has 357 places, 499 transitions, 7499 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:48:45,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 532 transitions, 8872 flow [2024-06-28 03:48:47,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 532 transitions, 8618 flow, removed 106 selfloop flow, removed 5 redundant places. [2024-06-28 03:48:47,354 INFO L231 Difference]: Finished difference. Result has 362 places, 508 transitions, 7626 flow [2024-06-28 03:48:47,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7626, PETRI_PLACES=362, PETRI_TRANSITIONS=508} [2024-06-28 03:48:47,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-28 03:48:47,355 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 508 transitions, 7626 flow [2024-06-28 03:48:47,355 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 03:48:47,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:47,355 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 03:48:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:48:47,355 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 03:48:47,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1080991913, now seen corresponding path program 8 times [2024-06-28 03:48:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:47,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245657792] [2024-06-28 03:48:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:47,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:48,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245657792] [2024-06-28 03:48:48,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245657792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:48,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:48,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470855802] [2024-06-28 03:48:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:48,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:48,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 508 transitions, 7626 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 03:48:48,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:48,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:48,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:49,954 INFO L124 PetriNetUnfolderBase]: 3574/5558 cut-off events. [2024-06-28 03:48:49,955 INFO L125 PetriNetUnfolderBase]: For 505890/505893 co-relation queries the response was YES. [2024-06-28 03:48:50,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53563 conditions, 5558 events. 3574/5558 cut-off events. For 505890/505893 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 32094 event pairs, 585 based on Foata normal form. 4/5554 useless extension candidates. Maximal degree in co-relation 53394. Up to 5199 conditions per place. [2024-06-28 03:48:50,042 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 480 selfloop transitions, 57 changer transitions 0/541 dead transitions. [2024-06-28 03:48:50,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 541 transitions, 9204 flow [2024-06-28 03:48:50,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:48:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:48:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 03:48:50,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 03:48:50,043 INFO L175 Difference]: Start difference. First operand has 362 places, 508 transitions, 7626 flow. Second operand 10 states and 172 transitions. [2024-06-28 03:48:50,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 541 transitions, 9204 flow [2024-06-28 03:48:51,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 541 transitions, 9003 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 03:48:51,337 INFO L231 Difference]: Finished difference. Result has 367 places, 511 transitions, 7637 flow [2024-06-28 03:48:51,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7425, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7637, PETRI_PLACES=367, PETRI_TRANSITIONS=511} [2024-06-28 03:48:51,338 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-28 03:48:51,338 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 511 transitions, 7637 flow [2024-06-28 03:48:51,338 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 03:48:51,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:51,338 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 03:48:51,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:48:51,338 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 03:48:51,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1158073111, now seen corresponding path program 9 times [2024-06-28 03:48:51,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:51,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071050491] [2024-06-28 03:48:51,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:51,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:52,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:52,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071050491] [2024-06-28 03:48:52,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071050491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:52,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:52,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31513667] [2024-06-28 03:48:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:52,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:52,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:52,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 511 transitions, 7637 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 03:48:52,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:52,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:52,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:54,605 INFO L124 PetriNetUnfolderBase]: 3690/5739 cut-off events. [2024-06-28 03:48:54,606 INFO L125 PetriNetUnfolderBase]: For 569509/569512 co-relation queries the response was YES. [2024-06-28 03:48:54,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56569 conditions, 5739 events. 3690/5739 cut-off events. For 569509/569512 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 33331 event pairs, 602 based on Foata normal form. 8/5739 useless extension candidates. Maximal degree in co-relation 56398. Up to 4939 conditions per place. [2024-06-28 03:48:54,694 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 427 selfloop transitions, 132 changer transitions 0/563 dead transitions. [2024-06-28 03:48:54,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 563 transitions, 9821 flow [2024-06-28 03:48:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 03:48:54,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-28 03:48:54,705 INFO L175 Difference]: Start difference. First operand has 367 places, 511 transitions, 7637 flow. Second operand 11 states and 199 transitions. [2024-06-28 03:48:54,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 563 transitions, 9821 flow [2024-06-28 03:48:56,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 563 transitions, 9637 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:56,342 INFO L231 Difference]: Finished difference. Result has 371 places, 530 transitions, 8297 flow [2024-06-28 03:48:56,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7453, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8297, PETRI_PLACES=371, PETRI_TRANSITIONS=530} [2024-06-28 03:48:56,343 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-28 03:48:56,343 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 530 transitions, 8297 flow [2024-06-28 03:48:56,343 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 03:48:56,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:56,344 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 03:48:56,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:48:56,344 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 03:48:56,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:56,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1157744821, now seen corresponding path program 10 times [2024-06-28 03:48:56,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:56,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971127533] [2024-06-28 03:48:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:57,350 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 03:48:57,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:57,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971127533] [2024-06-28 03:48:57,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971127533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:57,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:57,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:48:57,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589628583] [2024-06-28 03:48:57,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:57,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:48:57,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:57,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:48:57,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:48:57,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:48:57,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 530 transitions, 8297 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 03:48:57,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:57,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:48:57,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:59,060 INFO L124 PetriNetUnfolderBase]: 3672/5715 cut-off events. [2024-06-28 03:48:59,060 INFO L125 PetriNetUnfolderBase]: For 567162/567165 co-relation queries the response was YES. [2024-06-28 03:48:59,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56596 conditions, 5715 events. 3672/5715 cut-off events. For 567162/567165 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 33184 event pairs, 602 based on Foata normal form. 8/5715 useless extension candidates. Maximal degree in co-relation 56424. Up to 4926 conditions per place. [2024-06-28 03:48:59,163 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 426 selfloop transitions, 126 changer transitions 0/556 dead transitions. [2024-06-28 03:48:59,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 556 transitions, 9716 flow [2024-06-28 03:48:59,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:48:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:48:59,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:48:59,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 03:48:59,164 INFO L175 Difference]: Start difference. First operand has 371 places, 530 transitions, 8297 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:48:59,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 556 transitions, 9716 flow [2024-06-28 03:49:00,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 556 transitions, 9278 flow, removed 199 selfloop flow, removed 4 redundant places. [2024-06-28 03:49:00,936 INFO L231 Difference]: Finished difference. Result has 376 places, 530 transitions, 8121 flow [2024-06-28 03:49:00,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7859, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8121, PETRI_PLACES=376, PETRI_TRANSITIONS=530} [2024-06-28 03:49:00,936 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-28 03:49:00,936 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 530 transitions, 8121 flow [2024-06-28 03:49:00,936 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 03:49:00,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:00,937 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 03:49:00,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:49:00,937 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 03:49:00,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:00,937 INFO L85 PathProgramCache]: Analyzing trace with hash 214933594, now seen corresponding path program 4 times [2024-06-28 03:49:00,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:00,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647945210] [2024-06-28 03:49:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:00,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647945210] [2024-06-28 03:49:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647945210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:01,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:01,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:49:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730609158] [2024-06-28 03:49:01,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:01,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:49:01,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:01,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:49:01,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:49:01,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:01,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 530 transitions, 8121 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 03:49:01,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:01,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:01,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:03,355 INFO L124 PetriNetUnfolderBase]: 3716/5783 cut-off events. [2024-06-28 03:49:03,355 INFO L125 PetriNetUnfolderBase]: For 589678/589681 co-relation queries the response was YES. [2024-06-28 03:49:03,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56780 conditions, 5783 events. 3716/5783 cut-off events. For 589678/589681 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 33741 event pairs, 608 based on Foata normal form. 14/5789 useless extension candidates. Maximal degree in co-relation 56607. Up to 5433 conditions per place. [2024-06-28 03:49:03,447 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 518 selfloop transitions, 36 changer transitions 0/558 dead transitions. [2024-06-28 03:49:03,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 558 transitions, 9627 flow [2024-06-28 03:49:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:49:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:49:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:49:03,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:49:03,449 INFO L175 Difference]: Start difference. First operand has 376 places, 530 transitions, 8121 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:49:03,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 558 transitions, 9627 flow [2024-06-28 03:49:05,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 558 transitions, 9375 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:49:05,088 INFO L231 Difference]: Finished difference. Result has 376 places, 531 transitions, 7982 flow [2024-06-28 03:49:05,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7869, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7982, PETRI_PLACES=376, PETRI_TRANSITIONS=531} [2024-06-28 03:49:05,089 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-28 03:49:05,089 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 531 transitions, 7982 flow [2024-06-28 03:49:05,089 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 03:49:05,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:05,089 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 03:49:05,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:49:05,090 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 03:49:05,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1661021516, now seen corresponding path program 6 times [2024-06-28 03:49:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782766338] [2024-06-28 03:49:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:05,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:05,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782766338] [2024-06-28 03:49:05,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782766338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:05,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:05,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:05,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939383212] [2024-06-28 03:49:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:05,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:05,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:06,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:06,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 531 transitions, 7982 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 03:49:06,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:06,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:06,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:07,603 INFO L124 PetriNetUnfolderBase]: 3704/5764 cut-off events. [2024-06-28 03:49:07,604 INFO L125 PetriNetUnfolderBase]: For 557918/557918 co-relation queries the response was YES. [2024-06-28 03:49:07,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56072 conditions, 5764 events. 3704/5764 cut-off events. For 557918/557918 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 33574 event pairs, 611 based on Foata normal form. 4/5757 useless extension candidates. Maximal degree in co-relation 55898. Up to 5380 conditions per place. [2024-06-28 03:49:07,704 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 496 selfloop transitions, 54 changer transitions 0/554 dead transitions. [2024-06-28 03:49:07,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 554 transitions, 9298 flow [2024-06-28 03:49:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:49:07,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 03:49:07,706 INFO L175 Difference]: Start difference. First operand has 376 places, 531 transitions, 7982 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:49:07,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 554 transitions, 9298 flow [2024-06-28 03:49:09,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 554 transitions, 9131 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 03:49:09,338 INFO L231 Difference]: Finished difference. Result has 379 places, 531 transitions, 7930 flow [2024-06-28 03:49:09,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7815, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7930, PETRI_PLACES=379, PETRI_TRANSITIONS=531} [2024-06-28 03:49:09,338 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-28 03:49:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 531 transitions, 7930 flow [2024-06-28 03:49:09,339 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 03:49:09,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:09,339 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 03:49:09,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:49:09,339 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 03:49:09,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:09,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1171169293, now seen corresponding path program 11 times [2024-06-28 03:49:09,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:09,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734698814] [2024-06-28 03:49:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:09,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:10,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:10,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734698814] [2024-06-28 03:49:10,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734698814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:10,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:10,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:10,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402394713] [2024-06-28 03:49:10,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:10,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:10,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:10,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:10,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:10,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 531 transitions, 7930 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 03:49:10,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:10,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:10,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:12,051 INFO L124 PetriNetUnfolderBase]: 3698/5759 cut-off events. [2024-06-28 03:49:12,052 INFO L125 PetriNetUnfolderBase]: For 549110/549113 co-relation queries the response was YES. [2024-06-28 03:49:12,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55638 conditions, 5759 events. 3698/5759 cut-off events. For 549110/549113 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 33592 event pairs, 601 based on Foata normal form. 4/5755 useless extension candidates. Maximal degree in co-relation 55463. Up to 5437 conditions per place. [2024-06-28 03:49:12,144 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 509 selfloop transitions, 42 changer transitions 0/555 dead transitions. [2024-06-28 03:49:12,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 555 transitions, 9254 flow [2024-06-28 03:49:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:49:12,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 03:49:12,145 INFO L175 Difference]: Start difference. First operand has 379 places, 531 transitions, 7930 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:49:12,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 555 transitions, 9254 flow [2024-06-28 03:49:13,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 555 transitions, 8995 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 03:49:13,968 INFO L231 Difference]: Finished difference. Result has 379 places, 531 transitions, 7761 flow [2024-06-28 03:49:13,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7671, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7761, PETRI_PLACES=379, PETRI_TRANSITIONS=531} [2024-06-28 03:49:13,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-28 03:49:13,969 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 531 transitions, 7761 flow [2024-06-28 03:49:13,969 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 03:49:13,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:13,969 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 03:49:13,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:49:13,970 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 03:49:13,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1474608512, now seen corresponding path program 7 times [2024-06-28 03:49:13,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:13,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987771255] [2024-06-28 03:49:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:14,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:14,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987771255] [2024-06-28 03:49:14,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987771255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:14,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:14,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:14,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460661398] [2024-06-28 03:49:14,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:14,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:14,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:14,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 531 transitions, 7761 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 03:49:14,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:14,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:14,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:16,420 INFO L124 PetriNetUnfolderBase]: 3718/5781 cut-off events. [2024-06-28 03:49:16,420 INFO L125 PetriNetUnfolderBase]: For 565450/565453 co-relation queries the response was YES. [2024-06-28 03:49:16,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55915 conditions, 5781 events. 3718/5781 cut-off events. For 565450/565453 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 33644 event pairs, 607 based on Foata normal form. 6/5779 useless extension candidates. Maximal degree in co-relation 55739. Up to 5240 conditions per place. [2024-06-28 03:49:16,516 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 476 selfloop transitions, 80 changer transitions 0/560 dead transitions. [2024-06-28 03:49:16,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 560 transitions, 9166 flow [2024-06-28 03:49:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:49:16,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:49:16,517 INFO L175 Difference]: Start difference. First operand has 379 places, 531 transitions, 7761 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:49:16,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 560 transitions, 9166 flow [2024-06-28 03:49:18,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 560 transitions, 9080 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:49:18,457 INFO L231 Difference]: Finished difference. Result has 381 places, 534 transitions, 7969 flow [2024-06-28 03:49:18,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7675, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7969, PETRI_PLACES=381, PETRI_TRANSITIONS=534} [2024-06-28 03:49:18,458 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-28 03:49:18,458 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 534 transitions, 7969 flow [2024-06-28 03:49:18,458 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 03:49:18,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:18,458 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 03:49:18,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:49:18,458 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 03:49:18,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1488357078, now seen corresponding path program 8 times [2024-06-28 03:49:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:18,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117399721] [2024-06-28 03:49:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:18,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:19,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:19,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117399721] [2024-06-28 03:49:19,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117399721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:19,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:19,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:19,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633211071] [2024-06-28 03:49:19,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:19,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:19,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:19,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:19,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:19,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:19,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 534 transitions, 7969 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 03:49:19,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:19,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:19,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:20,937 INFO L124 PetriNetUnfolderBase]: 3850/5963 cut-off events. [2024-06-28 03:49:20,937 INFO L125 PetriNetUnfolderBase]: For 654060/654063 co-relation queries the response was YES. [2024-06-28 03:49:21,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60808 conditions, 5963 events. 3850/5963 cut-off events. For 654060/654063 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 34639 event pairs, 528 based on Foata normal form. 6/5961 useless extension candidates. Maximal degree in co-relation 60631. Up to 4638 conditions per place. [2024-06-28 03:49:21,035 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 369 selfloop transitions, 206 changer transitions 0/579 dead transitions. [2024-06-28 03:49:21,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 579 transitions, 10513 flow [2024-06-28 03:49:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:49:21,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 03:49:21,037 INFO L175 Difference]: Start difference. First operand has 381 places, 534 transitions, 7969 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:49:21,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 579 transitions, 10513 flow [2024-06-28 03:49:22,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 579 transitions, 10257 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 03:49:22,858 INFO L231 Difference]: Finished difference. Result has 383 places, 549 transitions, 8802 flow [2024-06-28 03:49:22,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7713, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8802, PETRI_PLACES=383, PETRI_TRANSITIONS=549} [2024-06-28 03:49:22,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 03:49:22,859 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 549 transitions, 8802 flow [2024-06-28 03:49:22,859 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 03:49:22,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:22,859 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 03:49:22,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:49:22,859 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 03:49:22,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash -773959861, now seen corresponding path program 12 times [2024-06-28 03:49:22,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842710643] [2024-06-28 03:49:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:22,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:24,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:24,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842710643] [2024-06-28 03:49:24,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842710643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:24,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:24,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:49:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185282457] [2024-06-28 03:49:24,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:49:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:49:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:49:24,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:24,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 549 transitions, 8802 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 03:49:24,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:24,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:24,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:26,081 INFO L124 PetriNetUnfolderBase]: 3876/6011 cut-off events. [2024-06-28 03:49:26,081 INFO L125 PetriNetUnfolderBase]: For 680764/680767 co-relation queries the response was YES. [2024-06-28 03:49:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62753 conditions, 6011 events. 3876/6011 cut-off events. For 680764/680767 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 35050 event pairs, 536 based on Foata normal form. 4/6007 useless extension candidates. Maximal degree in co-relation 62575. Up to 5157 conditions per place. [2024-06-28 03:49:26,179 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 422 selfloop transitions, 157 changer transitions 0/583 dead transitions. [2024-06-28 03:49:26,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 583 transitions, 10596 flow [2024-06-28 03:49:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:49:26,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:49:26,181 INFO L175 Difference]: Start difference. First operand has 383 places, 549 transitions, 8802 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:49:26,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 583 transitions, 10596 flow [2024-06-28 03:49:28,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 583 transitions, 10320 flow, removed 127 selfloop flow, removed 2 redundant places. [2024-06-28 03:49:28,280 INFO L231 Difference]: Finished difference. Result has 391 places, 559 transitions, 9234 flow [2024-06-28 03:49:28,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8526, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9234, PETRI_PLACES=391, PETRI_TRANSITIONS=559} [2024-06-28 03:49:28,280 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-28 03:49:28,280 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 559 transitions, 9234 flow [2024-06-28 03:49:28,280 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 03:49:28,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:28,281 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 03:49:28,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:49:28,281 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 03:49:28,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:28,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1488090168, now seen corresponding path program 9 times [2024-06-28 03:49:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:28,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691536231] [2024-06-28 03:49:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:29,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:29,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691536231] [2024-06-28 03:49:29,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691536231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:29,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:29,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:29,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248342101] [2024-06-28 03:49:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:29,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:29,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:29,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:29,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:29,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 559 transitions, 9234 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 03:49:29,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:29,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:29,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:30,844 INFO L124 PetriNetUnfolderBase]: 3880/6011 cut-off events. [2024-06-28 03:49:30,844 INFO L125 PetriNetUnfolderBase]: For 679076/679079 co-relation queries the response was YES. [2024-06-28 03:49:30,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62084 conditions, 6011 events. 3880/6011 cut-off events. For 679076/679079 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 35035 event pairs, 545 based on Foata normal form. 6/6009 useless extension candidates. Maximal degree in co-relation 61903. Up to 4681 conditions per place. [2024-06-28 03:49:30,946 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 381 selfloop transitions, 208 changer transitions 0/593 dead transitions. [2024-06-28 03:49:30,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 593 transitions, 11282 flow [2024-06-28 03:49:30,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:49:30,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 03:49:30,947 INFO L175 Difference]: Start difference. First operand has 391 places, 559 transitions, 9234 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:49:30,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 593 transitions, 11282 flow [2024-06-28 03:49:33,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 593 transitions, 11025 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-06-28 03:49:33,233 INFO L231 Difference]: Finished difference. Result has 396 places, 562 transitions, 9499 flow [2024-06-28 03:49:33,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8977, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9499, PETRI_PLACES=396, PETRI_TRANSITIONS=562} [2024-06-28 03:49:33,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 03:49:33,234 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 562 transitions, 9499 flow [2024-06-28 03:49:33,234 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 03:49:33,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:33,234 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 03:49:33,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:49:33,234 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 03:49:33,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1660194166, now seen corresponding path program 5 times [2024-06-28 03:49:33,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:33,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796906224] [2024-06-28 03:49:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:34,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:34,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796906224] [2024-06-28 03:49:34,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796906224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:34,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:34,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:34,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739488418] [2024-06-28 03:49:34,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:34,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:34,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:34,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:34,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 562 transitions, 9499 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 03:49:34,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:34,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:34,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:35,837 INFO L124 PetriNetUnfolderBase]: 3924/6077 cut-off events. [2024-06-28 03:49:35,837 INFO L125 PetriNetUnfolderBase]: For 729203/729206 co-relation queries the response was YES. [2024-06-28 03:49:35,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63727 conditions, 6077 events. 3924/6077 cut-off events. For 729203/729206 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 35446 event pairs, 556 based on Foata normal form. 14/6083 useless extension candidates. Maximal degree in co-relation 63544. Up to 5591 conditions per place. [2024-06-28 03:49:35,935 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 516 selfloop transitions, 68 changer transitions 0/588 dead transitions. [2024-06-28 03:49:35,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 588 transitions, 10981 flow [2024-06-28 03:49:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:49:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:49:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:49:35,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 03:49:35,937 INFO L175 Difference]: Start difference. First operand has 396 places, 562 transitions, 9499 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:49:35,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 588 transitions, 10981 flow [2024-06-28 03:49:37,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 588 transitions, 10565 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 03:49:37,952 INFO L231 Difference]: Finished difference. Result has 399 places, 563 transitions, 9262 flow [2024-06-28 03:49:37,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9083, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9262, PETRI_PLACES=399, PETRI_TRANSITIONS=563} [2024-06-28 03:49:37,953 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-28 03:49:37,953 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 563 transitions, 9262 flow [2024-06-28 03:49:37,953 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 03:49:37,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:37,953 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 03:49:37,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:49:37,953 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 03:49:37,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash -601380416, now seen corresponding path program 6 times [2024-06-28 03:49:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648163450] [2024-06-28 03:49:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:37,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:38,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:38,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648163450] [2024-06-28 03:49:38,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648163450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:38,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:38,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:38,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614340652] [2024-06-28 03:49:38,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:38,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:38,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:38,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:38,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:38,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 563 transitions, 9262 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 03:49:38,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:38,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:38,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:40,467 INFO L124 PetriNetUnfolderBase]: 4024/6233 cut-off events. [2024-06-28 03:49:40,468 INFO L125 PetriNetUnfolderBase]: For 779175/779178 co-relation queries the response was YES. [2024-06-28 03:49:40,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66136 conditions, 6233 events. 4024/6233 cut-off events. For 779175/779178 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 36557 event pairs, 570 based on Foata normal form. 10/6235 useless extension candidates. Maximal degree in co-relation 65952. Up to 5521 conditions per place. [2024-06-28 03:49:40,573 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 516 selfloop transitions, 73 changer transitions 0/593 dead transitions. [2024-06-28 03:49:40,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 593 transitions, 11058 flow [2024-06-28 03:49:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:49:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:49:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:49:40,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:49:40,575 INFO L175 Difference]: Start difference. First operand has 399 places, 563 transitions, 9262 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:49:40,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 593 transitions, 11058 flow [2024-06-28 03:49:43,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 593 transitions, 10907 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:49:43,169 INFO L231 Difference]: Finished difference. Result has 401 places, 565 transitions, 9339 flow [2024-06-28 03:49:43,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9111, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9339, PETRI_PLACES=401, PETRI_TRANSITIONS=565} [2024-06-28 03:49:43,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-28 03:49:43,169 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 565 transitions, 9339 flow [2024-06-28 03:49:43,170 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 03:49:43,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:43,170 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 03:49:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:49:43,170 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 03:49:43,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1646377435, now seen corresponding path program 13 times [2024-06-28 03:49:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229191641] [2024-06-28 03:49:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:44,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229191641] [2024-06-28 03:49:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229191641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:44,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:44,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122797835] [2024-06-28 03:49:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:44,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:44,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 565 transitions, 9339 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 03:49:44,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:44,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:44,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:46,277 INFO L124 PetriNetUnfolderBase]: 4034/6257 cut-off events. [2024-06-28 03:49:46,277 INFO L125 PetriNetUnfolderBase]: For 770951/770954 co-relation queries the response was YES. [2024-06-28 03:49:46,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66498 conditions, 6257 events. 4034/6257 cut-off events. For 770951/770954 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 36804 event pairs, 586 based on Foata normal form. 4/6253 useless extension candidates. Maximal degree in co-relation 66313. Up to 5785 conditions per place. [2024-06-28 03:49:46,377 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 512 selfloop transitions, 74 changer transitions 0/590 dead transitions. [2024-06-28 03:49:46,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 590 transitions, 10787 flow [2024-06-28 03:49:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:49:46,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 03:49:46,379 INFO L175 Difference]: Start difference. First operand has 401 places, 565 transitions, 9339 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:49:46,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 590 transitions, 10787 flow [2024-06-28 03:49:49,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 590 transitions, 10682 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:49:49,146 INFO L231 Difference]: Finished difference. Result has 406 places, 568 transitions, 9542 flow [2024-06-28 03:49:49,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9234, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9542, PETRI_PLACES=406, PETRI_TRANSITIONS=568} [2024-06-28 03:49:49,146 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-28 03:49:49,146 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 568 transitions, 9542 flow [2024-06-28 03:49:49,147 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 03:49:49,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:49,147 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 03:49:49,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:49:49,147 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 03:49:49,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1646377652, now seen corresponding path program 10 times [2024-06-28 03:49:49,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:49,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563266436] [2024-06-28 03:49:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:49,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:50,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:50,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563266436] [2024-06-28 03:49:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563266436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468008270] [2024-06-28 03:49:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:50,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:50,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:50,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:50,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 568 transitions, 9542 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 03:49:50,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:50,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:50,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:51,828 INFO L124 PetriNetUnfolderBase]: 4054/6285 cut-off events. [2024-06-28 03:49:51,828 INFO L125 PetriNetUnfolderBase]: For 793631/793634 co-relation queries the response was YES. [2024-06-28 03:49:51,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67180 conditions, 6285 events. 4054/6285 cut-off events. For 793631/793634 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 36950 event pairs, 586 based on Foata normal form. 6/6283 useless extension candidates. Maximal degree in co-relation 66993. Up to 5805 conditions per place. [2024-06-28 03:49:51,947 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 515 selfloop transitions, 75 changer transitions 0/594 dead transitions. [2024-06-28 03:49:51,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 594 transitions, 11018 flow [2024-06-28 03:49:51,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:49:51,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 03:49:51,949 INFO L175 Difference]: Start difference. First operand has 406 places, 568 transitions, 9542 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:49:51,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 594 transitions, 11018 flow [2024-06-28 03:49:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 594 transitions, 10738 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 03:49:54,766 INFO L231 Difference]: Finished difference. Result has 408 places, 572 transitions, 9595 flow [2024-06-28 03:49:54,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9262, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9595, PETRI_PLACES=408, PETRI_TRANSITIONS=572} [2024-06-28 03:49:54,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-28 03:49:54,766 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 572 transitions, 9595 flow [2024-06-28 03:49:54,766 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 03:49:54,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:54,767 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 03:49:54,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:49:54,767 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 03:49:54,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash -608053600, now seen corresponding path program 11 times [2024-06-28 03:49:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216152468] [2024-06-28 03:49:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:55,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:55,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216152468] [2024-06-28 03:49:55,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216152468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:55,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:55,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:49:55,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403310616] [2024-06-28 03:49:55,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:55,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:49:55,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:49:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:49:55,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:49:55,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 572 transitions, 9595 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 03:49:55,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:55,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:49:55,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:57,574 INFO L124 PetriNetUnfolderBase]: 4080/6321 cut-off events. [2024-06-28 03:49:57,575 INFO L125 PetriNetUnfolderBase]: For 808750/808753 co-relation queries the response was YES. [2024-06-28 03:49:57,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68008 conditions, 6321 events. 4080/6321 cut-off events. For 808750/808753 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 37185 event pairs, 590 based on Foata normal form. 4/6317 useless extension candidates. Maximal degree in co-relation 67820. Up to 5726 conditions per place. [2024-06-28 03:49:57,688 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 496 selfloop transitions, 103 changer transitions 0/603 dead transitions. [2024-06-28 03:49:57,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 603 transitions, 11392 flow [2024-06-28 03:49:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:49:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:49:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:49:57,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 03:49:57,689 INFO L175 Difference]: Start difference. First operand has 408 places, 572 transitions, 9595 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:49:57,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 603 transitions, 11392 flow [2024-06-28 03:50:00,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 603 transitions, 11097 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-28 03:50:00,843 INFO L231 Difference]: Finished difference. Result has 411 places, 581 transitions, 9835 flow [2024-06-28 03:50:00,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9300, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9835, PETRI_PLACES=411, PETRI_TRANSITIONS=581} [2024-06-28 03:50:00,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-28 03:50:00,844 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 581 transitions, 9835 flow [2024-06-28 03:50:00,844 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 03:50:00,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:00,844 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 03:50:00,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:50:00,844 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 03:50:00,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash -608320510, now seen corresponding path program 12 times [2024-06-28 03:50:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:00,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428717755] [2024-06-28 03:50:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:00,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:01,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:01,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428717755] [2024-06-28 03:50:01,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428717755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:01,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743632427] [2024-06-28 03:50:01,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:01,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:01,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:01,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:01,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 581 transitions, 9835 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 03:50:01,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:01,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:01,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:03,499 INFO L124 PetriNetUnfolderBase]: 4132/6393 cut-off events. [2024-06-28 03:50:03,500 INFO L125 PetriNetUnfolderBase]: For 848595/848598 co-relation queries the response was YES. [2024-06-28 03:50:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69695 conditions, 6393 events. 4132/6393 cut-off events. For 848595/848598 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 37637 event pairs, 592 based on Foata normal form. 6/6391 useless extension candidates. Maximal degree in co-relation 69505. Up to 5724 conditions per place. [2024-06-28 03:50:03,620 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 499 selfloop transitions, 112 changer transitions 0/615 dead transitions. [2024-06-28 03:50:03,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 615 transitions, 12028 flow [2024-06-28 03:50:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:50:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:50:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:50:03,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:50:03,622 INFO L175 Difference]: Start difference. First operand has 411 places, 581 transitions, 9835 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:50:03,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 615 transitions, 12028 flow [2024-06-28 03:50:06,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 615 transitions, 11699 flow, removed 113 selfloop flow, removed 5 redundant places. [2024-06-28 03:50:06,921 INFO L231 Difference]: Finished difference. Result has 416 places, 591 transitions, 10238 flow [2024-06-28 03:50:06,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9524, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10238, PETRI_PLACES=416, PETRI_TRANSITIONS=591} [2024-06-28 03:50:06,922 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-28 03:50:06,922 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 591 transitions, 10238 flow [2024-06-28 03:50:06,922 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 03:50:06,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:06,922 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 03:50:06,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:50:06,922 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 03:50:06,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash -615470567, now seen corresponding path program 14 times [2024-06-28 03:50:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:06,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998684990] [2024-06-28 03:50:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:08,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998684990] [2024-06-28 03:50:08,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998684990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:08,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:08,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:08,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859003870] [2024-06-28 03:50:08,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:08,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:08,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 591 transitions, 10238 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 03:50:08,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:08,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:08,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:09,918 INFO L124 PetriNetUnfolderBase]: 4142/6411 cut-off events. [2024-06-28 03:50:09,918 INFO L125 PetriNetUnfolderBase]: For 856609/856612 co-relation queries the response was YES. [2024-06-28 03:50:10,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70330 conditions, 6411 events. 4142/6411 cut-off events. For 856609/856612 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 37761 event pairs, 594 based on Foata normal form. 4/6407 useless extension candidates. Maximal degree in co-relation 70137. Up to 5855 conditions per place. [2024-06-28 03:50:10,045 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 518 selfloop transitions, 93 changer transitions 0/615 dead transitions. [2024-06-28 03:50:10,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 615 transitions, 11732 flow [2024-06-28 03:50:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:50:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:50:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:50:10,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 03:50:10,046 INFO L175 Difference]: Start difference. First operand has 416 places, 591 transitions, 10238 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:50:10,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 615 transitions, 11732 flow [2024-06-28 03:50:13,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 615 transitions, 11499 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-28 03:50:13,296 INFO L231 Difference]: Finished difference. Result has 421 places, 594 transitions, 10357 flow [2024-06-28 03:50:13,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10005, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10357, PETRI_PLACES=421, PETRI_TRANSITIONS=594} [2024-06-28 03:50:13,296 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-28 03:50:13,297 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 594 transitions, 10357 flow [2024-06-28 03:50:13,297 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 03:50:13,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:13,297 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 03:50:13,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:50:13,297 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 03:50:13,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1526720222, now seen corresponding path program 7 times [2024-06-28 03:50:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:13,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898231200] [2024-06-28 03:50:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:14,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:14,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898231200] [2024-06-28 03:50:14,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898231200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:14,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:14,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:14,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381525875] [2024-06-28 03:50:14,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:14,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:14,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:14,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:14,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:14,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 594 transitions, 10357 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 03:50:14,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:14,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:14,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:16,128 INFO L124 PetriNetUnfolderBase]: 4226/6550 cut-off events. [2024-06-28 03:50:16,129 INFO L125 PetriNetUnfolderBase]: For 905539/905539 co-relation queries the response was YES. [2024-06-28 03:50:16,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71949 conditions, 6550 events. 4226/6550 cut-off events. For 905539/905539 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 38725 event pairs, 710 based on Foata normal form. 8/6547 useless extension candidates. Maximal degree in co-relation 71754. Up to 6101 conditions per place. [2024-06-28 03:50:16,230 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 569 selfloop transitions, 48 changer transitions 0/621 dead transitions. [2024-06-28 03:50:16,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 621 transitions, 12051 flow [2024-06-28 03:50:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:50:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:50:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:50:16,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:50:16,231 INFO L175 Difference]: Start difference. First operand has 421 places, 594 transitions, 10357 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:50:16,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 621 transitions, 12051 flow [2024-06-28 03:50:19,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 621 transitions, 11727 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-28 03:50:19,379 INFO L231 Difference]: Finished difference. Result has 424 places, 601 transitions, 10332 flow [2024-06-28 03:50:19,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10033, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10332, PETRI_PLACES=424, PETRI_TRANSITIONS=601} [2024-06-28 03:50:19,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-28 03:50:19,380 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 601 transitions, 10332 flow [2024-06-28 03:50:19,380 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 03:50:19,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:19,380 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 03:50:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:50:19,381 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 03:50:19,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash 769796544, now seen corresponding path program 8 times [2024-06-28 03:50:19,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:19,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927742601] [2024-06-28 03:50:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:19,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:20,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:20,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927742601] [2024-06-28 03:50:20,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927742601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:20,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:20,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:50:20,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124028215] [2024-06-28 03:50:20,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:20,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:50:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:50:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:50:20,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:20,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 601 transitions, 10332 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 03:50:20,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:20,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:20,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:22,244 INFO L124 PetriNetUnfolderBase]: 4326/6706 cut-off events. [2024-06-28 03:50:22,244 INFO L125 PetriNetUnfolderBase]: For 988893/988893 co-relation queries the response was YES. [2024-06-28 03:50:22,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75643 conditions, 6706 events. 4326/6706 cut-off events. For 988893/988893 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 39913 event pairs, 719 based on Foata normal form. 8/6703 useless extension candidates. Maximal degree in co-relation 75445. Up to 6065 conditions per place. [2024-06-28 03:50:22,365 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 573 selfloop transitions, 52 changer transitions 0/629 dead transitions. [2024-06-28 03:50:22,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 629 transitions, 12348 flow [2024-06-28 03:50:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:50:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:50:22,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:50:22,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 03:50:22,367 INFO L175 Difference]: Start difference. First operand has 424 places, 601 transitions, 10332 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:50:22,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 629 transitions, 12348 flow [2024-06-28 03:50:26,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 629 transitions, 12171 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 03:50:26,151 INFO L231 Difference]: Finished difference. Result has 428 places, 603 transitions, 10349 flow [2024-06-28 03:50:26,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10155, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10349, PETRI_PLACES=428, PETRI_TRANSITIONS=603} [2024-06-28 03:50:26,151 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-28 03:50:26,151 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 603 transitions, 10349 flow [2024-06-28 03:50:26,152 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 03:50:26,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:26,152 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 03:50:26,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:50:26,152 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 03:50:26,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:26,152 INFO L85 PathProgramCache]: Analyzing trace with hash 484696674, now seen corresponding path program 9 times [2024-06-28 03:50:26,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:26,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350318861] [2024-06-28 03:50:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:26,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:27,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:27,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350318861] [2024-06-28 03:50:27,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350318861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:27,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:27,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:27,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167029723] [2024-06-28 03:50:27,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:27,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:27,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:27,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:27,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:27,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:27,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 603 transitions, 10349 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 03:50:27,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:27,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:27,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:29,103 INFO L124 PetriNetUnfolderBase]: 4413/6849 cut-off events. [2024-06-28 03:50:29,103 INFO L125 PetriNetUnfolderBase]: For 1062866/1062866 co-relation queries the response was YES. [2024-06-28 03:50:29,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78387 conditions, 6849 events. 4413/6849 cut-off events. For 1062866/1062866 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 41104 event pairs, 778 based on Foata normal form. 8/6846 useless extension candidates. Maximal degree in co-relation 78188. Up to 6196 conditions per place. [2024-06-28 03:50:29,236 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 550 selfloop transitions, 76 changer transitions 0/630 dead transitions. [2024-06-28 03:50:29,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 630 transitions, 12317 flow [2024-06-28 03:50:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:50:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:50:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:50:29,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:50:29,237 INFO L175 Difference]: Start difference. First operand has 428 places, 603 transitions, 10349 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:50:29,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 630 transitions, 12317 flow [2024-06-28 03:50:32,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 630 transitions, 12213 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:50:32,707 INFO L231 Difference]: Finished difference. Result has 432 places, 605 transitions, 10499 flow [2024-06-28 03:50:32,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10253, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10499, PETRI_PLACES=432, PETRI_TRANSITIONS=605} [2024-06-28 03:50:32,707 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 391 predicate places. [2024-06-28 03:50:32,707 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 605 transitions, 10499 flow [2024-06-28 03:50:32,707 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 03:50:32,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:32,709 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 03:50:32,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:50:32,709 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 03:50:32,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:32,709 INFO L85 PathProgramCache]: Analyzing trace with hash 484458346, now seen corresponding path program 2 times [2024-06-28 03:50:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299369053] [2024-06-28 03:50:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:32,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:33,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299369053] [2024-06-28 03:50:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299369053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:33,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:33,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728674691] [2024-06-28 03:50:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:33,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:33,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:33,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:33,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:33,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 605 transitions, 10499 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 03:50:33,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:33,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:33,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:35,621 INFO L124 PetriNetUnfolderBase]: 4431/6873 cut-off events. [2024-06-28 03:50:35,621 INFO L125 PetriNetUnfolderBase]: For 1053346/1053349 co-relation queries the response was YES. [2024-06-28 03:50:35,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79067 conditions, 6873 events. 4431/6873 cut-off events. For 1053346/1053349 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 41245 event pairs, 771 based on Foata normal form. 3/6868 useless extension candidates. Maximal degree in co-relation 78866. Up to 6422 conditions per place. [2024-06-28 03:50:35,752 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 545 selfloop transitions, 86 changer transitions 0/635 dead transitions. [2024-06-28 03:50:35,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 635 transitions, 12556 flow [2024-06-28 03:50:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:50:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:50:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:50:35,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:50:35,754 INFO L175 Difference]: Start difference. First operand has 432 places, 605 transitions, 10499 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:50:35,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 635 transitions, 12556 flow [2024-06-28 03:50:40,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 635 transitions, 12427 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:50:40,487 INFO L231 Difference]: Finished difference. Result has 439 places, 619 transitions, 11163 flow [2024-06-28 03:50:40,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10376, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11163, PETRI_PLACES=439, PETRI_TRANSITIONS=619} [2024-06-28 03:50:40,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 03:50:40,487 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 619 transitions, 11163 flow [2024-06-28 03:50:40,487 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 03:50:40,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:40,488 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 03:50:40,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:50:40,488 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 03:50:40,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash 484221444, now seen corresponding path program 10 times [2024-06-28 03:50:40,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:40,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376376610] [2024-06-28 03:50:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:40,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376376610] [2024-06-28 03:50:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376376610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320632640] [2024-06-28 03:50:41,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:41,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:41,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 619 transitions, 11163 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 03:50:41,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:41,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:41,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:43,670 INFO L124 PetriNetUnfolderBase]: 4475/6944 cut-off events. [2024-06-28 03:50:43,671 INFO L125 PetriNetUnfolderBase]: For 1139704/1139704 co-relation queries the response was YES. [2024-06-28 03:50:43,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80908 conditions, 6944 events. 4475/6944 cut-off events. For 1139704/1139704 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41783 event pairs, 792 based on Foata normal form. 12/6945 useless extension candidates. Maximal degree in co-relation 80702. Up to 6452 conditions per place. [2024-06-28 03:50:43,802 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 558 selfloop transitions, 79 changer transitions 0/641 dead transitions. [2024-06-28 03:50:43,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 641 transitions, 12785 flow [2024-06-28 03:50:43,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:50:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:50:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:50:43,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 03:50:43,803 INFO L175 Difference]: Start difference. First operand has 439 places, 619 transitions, 11163 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:50:43,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 641 transitions, 12785 flow [2024-06-28 03:50:48,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 641 transitions, 12466 flow, removed 150 selfloop flow, removed 3 redundant places. [2024-06-28 03:50:48,055 INFO L231 Difference]: Finished difference. Result has 444 places, 620 transitions, 11085 flow [2024-06-28 03:50:48,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10876, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11085, PETRI_PLACES=444, PETRI_TRANSITIONS=620} [2024-06-28 03:50:48,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-28 03:50:48,056 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 620 transitions, 11085 flow [2024-06-28 03:50:48,056 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 03:50:48,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:48,056 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 03:50:48,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:50:48,056 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 03:50:48,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash 484221196, now seen corresponding path program 3 times [2024-06-28 03:50:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116983469] [2024-06-28 03:50:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:48,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116983469] [2024-06-28 03:50:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116983469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818030430] [2024-06-28 03:50:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:49,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:49,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 620 transitions, 11085 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 03:50:49,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:49,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:49,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:51,084 INFO L124 PetriNetUnfolderBase]: 4485/6957 cut-off events. [2024-06-28 03:50:51,084 INFO L125 PetriNetUnfolderBase]: For 1091545/1091548 co-relation queries the response was YES. [2024-06-28 03:50:51,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81110 conditions, 6957 events. 4485/6957 cut-off events. For 1091545/1091548 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 41895 event pairs, 781 based on Foata normal form. 4/6953 useless extension candidates. Maximal degree in co-relation 80903. Up to 6578 conditions per place. [2024-06-28 03:50:51,215 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 573 selfloop transitions, 64 changer transitions 0/641 dead transitions. [2024-06-28 03:50:51,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 641 transitions, 12641 flow [2024-06-28 03:50:51,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:50:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:50:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:50:51,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 03:50:51,216 INFO L175 Difference]: Start difference. First operand has 444 places, 620 transitions, 11085 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:50:51,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 641 transitions, 12641 flow [2024-06-28 03:50:56,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 641 transitions, 12448 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:50:56,051 INFO L231 Difference]: Finished difference. Result has 446 places, 624 transitions, 11214 flow [2024-06-28 03:50:56,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10892, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11214, PETRI_PLACES=446, PETRI_TRANSITIONS=624} [2024-06-28 03:50:56,051 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-28 03:50:56,052 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 624 transitions, 11214 flow [2024-06-28 03:50:56,052 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 03:50:56,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:56,052 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 03:50:56,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:50:56,052 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 03:50:56,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:56,053 INFO L85 PathProgramCache]: Analyzing trace with hash 307089676, now seen corresponding path program 4 times [2024-06-28 03:50:56,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:56,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609000789] [2024-06-28 03:50:56,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:56,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:56,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:56,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609000789] [2024-06-28 03:50:56,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609000789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:56,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:56,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:50:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206131163] [2024-06-28 03:50:56,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:56,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:50:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:56,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:50:56,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:50:56,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:50:56,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 624 transitions, 11214 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 03:50:56,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:56,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:50:56,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:59,175 INFO L124 PetriNetUnfolderBase]: 4479/6947 cut-off events. [2024-06-28 03:50:59,175 INFO L125 PetriNetUnfolderBase]: For 1091193/1091196 co-relation queries the response was YES. [2024-06-28 03:50:59,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80643 conditions, 6947 events. 4479/6947 cut-off events. For 1091193/1091196 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 41792 event pairs, 809 based on Foata normal form. 4/6943 useless extension candidates. Maximal degree in co-relation 80435. Up to 6635 conditions per place. [2024-06-28 03:50:59,295 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 590 selfloop transitions, 45 changer transitions 0/639 dead transitions. [2024-06-28 03:50:59,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 639 transitions, 12568 flow [2024-06-28 03:50:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:50:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:50:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:50:59,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:50:59,296 INFO L175 Difference]: Start difference. First operand has 446 places, 624 transitions, 11214 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:50:59,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 639 transitions, 12568 flow [2024-06-28 03:51:04,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 639 transitions, 12249 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-06-28 03:51:04,042 INFO L231 Difference]: Finished difference. Result has 448 places, 624 transitions, 10997 flow [2024-06-28 03:51:04,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10895, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10997, PETRI_PLACES=448, PETRI_TRANSITIONS=624} [2024-06-28 03:51:04,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-28 03:51:04,042 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 624 transitions, 10997 flow [2024-06-28 03:51:04,043 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 03:51:04,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:04,043 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 03:51:04,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:51:04,043 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 03:51:04,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:04,043 INFO L85 PathProgramCache]: Analyzing trace with hash 308873862, now seen corresponding path program 11 times [2024-06-28 03:51:04,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:04,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612679221] [2024-06-28 03:51:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:04,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:04,955 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 03:51:04,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:04,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612679221] [2024-06-28 03:51:04,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612679221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:04,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:04,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:51:04,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449720702] [2024-06-28 03:51:04,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:04,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:51:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:51:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:51:05,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:51:05,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 624 transitions, 10997 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 03:51:05,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:05,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:51:05,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:07,061 INFO L124 PetriNetUnfolderBase]: 4510/6995 cut-off events. [2024-06-28 03:51:07,062 INFO L125 PetriNetUnfolderBase]: For 1134465/1134465 co-relation queries the response was YES. [2024-06-28 03:51:07,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80758 conditions, 6995 events. 4510/6995 cut-off events. For 1134465/1134465 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42165 event pairs, 821 based on Foata normal form. 12/6996 useless extension candidates. Maximal degree in co-relation 80550. Up to 6571 conditions per place. [2024-06-28 03:51:07,193 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 586 selfloop transitions, 54 changer transitions 0/644 dead transitions. [2024-06-28 03:51:07,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 644 transitions, 12571 flow [2024-06-28 03:51:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:51:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:51:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:51:07,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:51:07,195 INFO L175 Difference]: Start difference. First operand has 448 places, 624 transitions, 10997 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:51:07,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 644 transitions, 12571 flow [2024-06-28 03:51:11,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 644 transitions, 12367 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:51:11,993 INFO L231 Difference]: Finished difference. Result has 448 places, 625 transitions, 10958 flow [2024-06-28 03:51:11,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10793, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10958, PETRI_PLACES=448, PETRI_TRANSITIONS=625} [2024-06-28 03:51:11,994 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-28 03:51:11,994 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 625 transitions, 10958 flow [2024-06-28 03:51:11,994 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 03:51:11,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:11,994 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 03:51:11,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:51:11,995 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 03:51:11,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash 922280096, now seen corresponding path program 12 times [2024-06-28 03:51:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:11,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202220909] [2024-06-28 03:51:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:12,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:12,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202220909] [2024-06-28 03:51:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202220909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:12,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:12,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:51:12,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94904621] [2024-06-28 03:51:12,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:12,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:51:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:51:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:51:12,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:51:12,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 625 transitions, 10958 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 03:51:12,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:12,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:51:12,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:15,221 INFO L124 PetriNetUnfolderBase]: 4525/7021 cut-off events. [2024-06-28 03:51:15,221 INFO L125 PetriNetUnfolderBase]: For 1104529/1104532 co-relation queries the response was YES. [2024-06-28 03:51:15,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80823 conditions, 7021 events. 4525/7021 cut-off events. For 1104529/1104532 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42365 event pairs, 815 based on Foata normal form. 10/7023 useless extension candidates. Maximal degree in co-relation 80615. Up to 6713 conditions per place. [2024-06-28 03:51:15,354 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 605 selfloop transitions, 34 changer transitions 0/643 dead transitions. [2024-06-28 03:51:15,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 643 transitions, 12433 flow [2024-06-28 03:51:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:51:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:51:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 03:51:15,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:51:15,356 INFO L175 Difference]: Start difference. First operand has 448 places, 625 transitions, 10958 flow. Second operand 8 states and 130 transitions. [2024-06-28 03:51:15,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 643 transitions, 12433 flow [2024-06-28 03:51:19,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 643 transitions, 12310 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:51:19,448 INFO L231 Difference]: Finished difference. Result has 451 places, 627 transitions, 10969 flow [2024-06-28 03:51:19,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10835, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10969, PETRI_PLACES=451, PETRI_TRANSITIONS=627} [2024-06-28 03:51:19,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 03:51:19,449 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 627 transitions, 10969 flow [2024-06-28 03:51:19,449 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 03:51:19,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:19,450 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 03:51:19,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:51:19,451 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 03:51:19,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:19,451 INFO L85 PathProgramCache]: Analyzing trace with hash -87286112, now seen corresponding path program 13 times [2024-06-28 03:51:19,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:19,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888763828] [2024-06-28 03:51:19,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:19,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888763828] [2024-06-28 03:51:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888763828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:20,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:20,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:51:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576096941] [2024-06-28 03:51:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:20,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:51:20,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:51:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:51:20,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:51:20,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 627 transitions, 10969 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 03:51:20,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:20,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:51:20,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:22,418 INFO L124 PetriNetUnfolderBase]: 4601/7129 cut-off events. [2024-06-28 03:51:22,418 INFO L125 PetriNetUnfolderBase]: For 1160079/1160079 co-relation queries the response was YES. [2024-06-28 03:51:22,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82870 conditions, 7129 events. 4601/7129 cut-off events. For 1160079/1160079 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 43054 event pairs, 824 based on Foata normal form. 12/7130 useless extension candidates. Maximal degree in co-relation 82660. Up to 6722 conditions per place. [2024-06-28 03:51:22,555 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 596 selfloop transitions, 54 changer transitions 0/654 dead transitions. [2024-06-28 03:51:22,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 654 transitions, 13097 flow [2024-06-28 03:51:22,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:51:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:51:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:51:22,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:51:22,556 INFO L175 Difference]: Start difference. First operand has 451 places, 627 transitions, 10969 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:51:22,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 654 transitions, 13097 flow [2024-06-28 03:51:27,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 654 transitions, 12986 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:51:27,262 INFO L231 Difference]: Finished difference. Result has 456 places, 637 transitions, 11510 flow [2024-06-28 03:51:27,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10858, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11510, PETRI_PLACES=456, PETRI_TRANSITIONS=637} [2024-06-28 03:51:27,263 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-28 03:51:27,263 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 637 transitions, 11510 flow [2024-06-28 03:51:27,263 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 03:51:27,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:27,263 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 03:51:27,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:51:27,264 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 03:51:27,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:27,264 INFO L85 PathProgramCache]: Analyzing trace with hash -91010979, now seen corresponding path program 15 times [2024-06-28 03:51:27,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:27,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968987092] [2024-06-28 03:51:27,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:27,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:28,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968987092] [2024-06-28 03:51:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968987092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:28,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:51:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654273223] [2024-06-28 03:51:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:28,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:51:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:51:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:51:28,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:51:28,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 637 transitions, 11510 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 03:51:28,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:28,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:51:28,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:30,378 INFO L124 PetriNetUnfolderBase]: 4587/7109 cut-off events. [2024-06-28 03:51:30,379 INFO L125 PetriNetUnfolderBase]: For 1126332/1126332 co-relation queries the response was YES. [2024-06-28 03:51:30,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82943 conditions, 7109 events. 4587/7109 cut-off events. For 1126332/1126332 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 42913 event pairs, 844 based on Foata normal form. 2/7100 useless extension candidates. Maximal degree in co-relation 82731. Up to 6789 conditions per place. [2024-06-28 03:51:30,526 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 605 selfloop transitions, 41 changer transitions 0/650 dead transitions. [2024-06-28 03:51:30,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 650 transitions, 12860 flow [2024-06-28 03:51:30,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:51:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:51:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 03:51:30,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 03:51:30,527 INFO L175 Difference]: Start difference. First operand has 456 places, 637 transitions, 11510 flow. Second operand 9 states and 143 transitions. [2024-06-28 03:51:30,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 650 transitions, 12860 flow [2024-06-28 03:51:35,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 650 transitions, 12415 flow, removed 197 selfloop flow, removed 5 redundant places. [2024-06-28 03:51:35,269 INFO L231 Difference]: Finished difference. Result has 460 places, 637 transitions, 11153 flow [2024-06-28 03:51:35,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11065, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11153, PETRI_PLACES=460, PETRI_TRANSITIONS=637} [2024-06-28 03:51:35,270 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-28 03:51:35,270 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 637 transitions, 11153 flow [2024-06-28 03:51:35,270 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 03:51:35,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:35,271 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 03:51:35,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:51:35,272 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 03:51:35,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1116175145, now seen corresponding path program 16 times [2024-06-28 03:51:35,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:35,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259434993] [2024-06-28 03:51:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:35,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:36,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:36,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259434993] [2024-06-28 03:51:36,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259434993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:36,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:36,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:51:36,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707136764] [2024-06-28 03:51:36,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:36,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:51:36,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:51:36,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:51:36,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:51:36,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 637 transitions, 11153 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 03:51:36,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:36,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:51:36,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:38,733 INFO L124 PetriNetUnfolderBase]: 4597/7134 cut-off events. [2024-06-28 03:51:38,733 INFO L125 PetriNetUnfolderBase]: For 1131430/1131433 co-relation queries the response was YES. [2024-06-28 03:51:38,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82420 conditions, 7134 events. 4597/7134 cut-off events. For 1131430/1131433 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 43214 event pairs, 794 based on Foata normal form. 4/7130 useless extension candidates. Maximal degree in co-relation 82206. Up to 6698 conditions per place. [2024-06-28 03:51:38,860 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 591 selfloop transitions, 63 changer transitions 0/658 dead transitions. [2024-06-28 03:51:38,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 658 transitions, 12937 flow [2024-06-28 03:51:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:51:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:51:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:51:38,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 03:51:38,863 INFO L175 Difference]: Start difference. First operand has 460 places, 637 transitions, 11153 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:51:38,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 658 transitions, 12937 flow [2024-06-28 03:51:43,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 658 transitions, 12828 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:51:43,801 INFO L231 Difference]: Finished difference. Result has 461 places, 640 transitions, 11336 flow [2024-06-28 03:51:43,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11044, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11336, PETRI_PLACES=461, PETRI_TRANSITIONS=640} [2024-06-28 03:51:43,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-28 03:51:43,802 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 640 transitions, 11336 flow [2024-06-28 03:51:43,803 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 03:51:43,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:43,803 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 03:51:43,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:51:43,804 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 03:51:43,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash -87286329, now seen corresponding path program 17 times [2024-06-28 03:51:43,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:43,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936830062] [2024-06-28 03:51:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:43,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:44,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:44,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936830062] [2024-06-28 03:51:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936830062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:44,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:44,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:51:44,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493865823] [2024-06-28 03:51:44,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:44,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:51:44,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:44,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:51:44,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:51:44,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:51:44,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 640 transitions, 11336 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 03:51:44,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:44,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:51:44,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:47,169 INFO L124 PetriNetUnfolderBase]: 4607/7147 cut-off events. [2024-06-28 03:51:47,170 INFO L125 PetriNetUnfolderBase]: For 1150849/1150849 co-relation queries the response was YES. [2024-06-28 03:51:47,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82962 conditions, 7147 events. 4607/7147 cut-off events. For 1150849/1150849 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 43246 event pairs, 834 based on Foata normal form. 2/7138 useless extension candidates. Maximal degree in co-relation 82747. Up to 6779 conditions per place. [2024-06-28 03:51:47,317 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 604 selfloop transitions, 50 changer transitions 0/658 dead transitions. [2024-06-28 03:51:47,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 658 transitions, 12892 flow [2024-06-28 03:51:47,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:51:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:51:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:51:47,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 03:51:47,319 INFO L175 Difference]: Start difference. First operand has 461 places, 640 transitions, 11336 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:51:47,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 658 transitions, 12892 flow [2024-06-28 03:51:51,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 658 transitions, 12508 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-28 03:51:51,862 INFO L231 Difference]: Finished difference. Result has 463 places, 643 transitions, 11230 flow [2024-06-28 03:51:51,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10980, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11230, PETRI_PLACES=463, PETRI_TRANSITIONS=643} [2024-06-28 03:51:51,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-28 03:51:51,862 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 643 transitions, 11230 flow [2024-06-28 03:51:51,863 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 03:51:51,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:51,863 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 03:51:51,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:51:51,863 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 03:51:51,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:51,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1116442272, now seen corresponding path program 14 times [2024-06-28 03:51:51,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:51,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466636481] [2024-06-28 03:51:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:51,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:52,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:52,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466636481] [2024-06-28 03:51:52,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466636481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:52,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:52,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:51:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787195786] [2024-06-28 03:51:52,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:52,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:51:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:51:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:51:52,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:51:52,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 643 transitions, 11230 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 03:51:52,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:52,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:51:52,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:54,998 INFO L124 PetriNetUnfolderBase]: 4617/7158 cut-off events. [2024-06-28 03:51:54,999 INFO L125 PetriNetUnfolderBase]: For 1169308/1169311 co-relation queries the response was YES. [2024-06-28 03:51:55,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82892 conditions, 7158 events. 4617/7158 cut-off events. For 1169308/1169311 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 43351 event pairs, 776 based on Foata normal form. 4/7154 useless extension candidates. Maximal degree in co-relation 82676. Up to 6683 conditions per place. [2024-06-28 03:51:55,153 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 595 selfloop transitions, 73 changer transitions 0/672 dead transitions. [2024-06-28 03:51:55,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 672 transitions, 13281 flow [2024-06-28 03:51:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:51:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:51:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:51:55,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:51:55,154 INFO L175 Difference]: Start difference. First operand has 463 places, 643 transitions, 11230 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:51:55,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 672 transitions, 13281 flow [2024-06-28 03:52:00,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 672 transitions, 13059 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 03:52:00,312 INFO L231 Difference]: Finished difference. Result has 466 places, 654 transitions, 11590 flow [2024-06-28 03:52:00,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11008, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11590, PETRI_PLACES=466, PETRI_TRANSITIONS=654} [2024-06-28 03:52:00,313 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-28 03:52:00,313 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 654 transitions, 11590 flow [2024-06-28 03:52:00,313 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 03:52:00,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:00,314 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 03:52:00,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:52:00,314 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 03:52:00,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1116175362, now seen corresponding path program 15 times [2024-06-28 03:52:00,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:00,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966243715] [2024-06-28 03:52:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:00,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:01,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966243715] [2024-06-28 03:52:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966243715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:52:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847687683] [2024-06-28 03:52:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:01,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:52:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:52:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:52:01,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:01,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 654 transitions, 11590 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 03:52:01,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:01,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:01,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:03,334 INFO L124 PetriNetUnfolderBase]: 4653/7208 cut-off events. [2024-06-28 03:52:03,334 INFO L125 PetriNetUnfolderBase]: For 1209119/1209122 co-relation queries the response was YES. [2024-06-28 03:52:03,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84316 conditions, 7208 events. 4653/7208 cut-off events. For 1209119/1209122 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 43624 event pairs, 775 based on Foata normal form. 6/7206 useless extension candidates. Maximal degree in co-relation 84098. Up to 6634 conditions per place. [2024-06-28 03:52:03,475 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 589 selfloop transitions, 89 changer transitions 0/682 dead transitions. [2024-06-28 03:52:03,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 682 transitions, 13923 flow [2024-06-28 03:52:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:52:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:52:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:52:03,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 03:52:03,476 INFO L175 Difference]: Start difference. First operand has 466 places, 654 transitions, 11590 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:52:03,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 682 transitions, 13923 flow [2024-06-28 03:52:08,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 682 transitions, 13629 flow, removed 112 selfloop flow, removed 5 redundant places. [2024-06-28 03:52:08,064 INFO L231 Difference]: Finished difference. Result has 470 places, 662 transitions, 11894 flow [2024-06-28 03:52:08,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11332, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11894, PETRI_PLACES=470, PETRI_TRANSITIONS=662} [2024-06-28 03:52:08,065 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-28 03:52:08,065 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 662 transitions, 11894 flow [2024-06-28 03:52:08,065 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 03:52:08,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:08,065 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 03:52:08,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:52:08,066 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 03:52:08,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1108823495, now seen corresponding path program 18 times [2024-06-28 03:52:08,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660116177] [2024-06-28 03:52:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:09,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:09,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660116177] [2024-06-28 03:52:09,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660116177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:09,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:09,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:52:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882320246] [2024-06-28 03:52:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:52:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:52:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:52:09,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:09,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 662 transitions, 11894 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 03:52:09,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:09,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:09,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:11,564 INFO L124 PetriNetUnfolderBase]: 4647/7208 cut-off events. [2024-06-28 03:52:11,564 INFO L125 PetriNetUnfolderBase]: For 1202617/1202620 co-relation queries the response was YES. [2024-06-28 03:52:11,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83983 conditions, 7208 events. 4647/7208 cut-off events. For 1202617/1202620 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 43693 event pairs, 817 based on Foata normal form. 4/7204 useless extension candidates. Maximal degree in co-relation 83763. Up to 6847 conditions per place. [2024-06-28 03:52:11,707 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 629 selfloop transitions, 47 changer transitions 0/680 dead transitions. [2024-06-28 03:52:11,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 680 transitions, 13358 flow [2024-06-28 03:52:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:52:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:52:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:52:11,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 03:52:11,709 INFO L175 Difference]: Start difference. First operand has 470 places, 662 transitions, 11894 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:52:11,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 680 transitions, 13358 flow [2024-06-28 03:52:16,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 680 transitions, 12628 flow, removed 173 selfloop flow, removed 8 redundant places. [2024-06-28 03:52:16,928 INFO L231 Difference]: Finished difference. Result has 471 places, 662 transitions, 11264 flow [2024-06-28 03:52:16,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11164, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11264, PETRI_PLACES=471, PETRI_TRANSITIONS=662} [2024-06-28 03:52:16,929 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-28 03:52:16,929 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 662 transitions, 11264 flow [2024-06-28 03:52:16,929 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 03:52:16,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:16,929 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 03:52:16,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:52:16,929 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 03:52:16,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1108823712, now seen corresponding path program 16 times [2024-06-28 03:52:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:16,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882386168] [2024-06-28 03:52:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:16,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:17,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:17,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882386168] [2024-06-28 03:52:17,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882386168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:17,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:17,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:52:17,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564167250] [2024-06-28 03:52:17,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:17,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:52:17,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:52:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:52:17,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:17,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 662 transitions, 11264 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 03:52:17,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:17,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:17,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:20,050 INFO L124 PetriNetUnfolderBase]: 4635/7190 cut-off events. [2024-06-28 03:52:20,050 INFO L125 PetriNetUnfolderBase]: For 1197768/1197771 co-relation queries the response was YES. [2024-06-28 03:52:20,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82069 conditions, 7190 events. 4635/7190 cut-off events. For 1197768/1197771 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 43547 event pairs, 807 based on Foata normal form. 6/7188 useless extension candidates. Maximal degree in co-relation 81850. Up to 6823 conditions per place. [2024-06-28 03:52:20,213 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 629 selfloop transitions, 48 changer transitions 0/681 dead transitions. [2024-06-28 03:52:20,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 681 transitions, 12753 flow [2024-06-28 03:52:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:52:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:52:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:52:20,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 03:52:20,215 INFO L175 Difference]: Start difference. First operand has 471 places, 662 transitions, 11264 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:52:20,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 681 transitions, 12753 flow [2024-06-28 03:52:25,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 681 transitions, 12467 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-06-28 03:52:25,351 INFO L231 Difference]: Finished difference. Result has 472 places, 663 transitions, 11106 flow [2024-06-28 03:52:25,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10990, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11106, PETRI_PLACES=472, PETRI_TRANSITIONS=663} [2024-06-28 03:52:25,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-28 03:52:25,352 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 663 transitions, 11106 flow [2024-06-28 03:52:25,352 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 03:52:25,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:25,352 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 03:52:25,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:52:25,352 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 03:52:25,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2145827998, now seen corresponding path program 13 times [2024-06-28 03:52:25,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:25,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594619399] [2024-06-28 03:52:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:25,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:26,140 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 03:52:26,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:26,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594619399] [2024-06-28 03:52:26,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594619399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:26,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:26,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:52:26,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983761956] [2024-06-28 03:52:26,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:26,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:52:26,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:52:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:52:26,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:26,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 663 transitions, 11106 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 03:52:26,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:26,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:26,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:28,372 INFO L124 PetriNetUnfolderBase]: 4607/7146 cut-off events. [2024-06-28 03:52:28,372 INFO L125 PetriNetUnfolderBase]: For 1183429/1183432 co-relation queries the response was YES. [2024-06-28 03:52:28,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80011 conditions, 7146 events. 4607/7146 cut-off events. For 1183429/1183432 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 43255 event pairs, 701 based on Foata normal form. 14/7152 useless extension candidates. Maximal degree in co-relation 79791. Up to 6637 conditions per place. [2024-06-28 03:52:28,527 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 623 selfloop transitions, 60 changer transitions 0/687 dead transitions. [2024-06-28 03:52:28,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 687 transitions, 12756 flow [2024-06-28 03:52:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:52:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:52:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:52:28,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 03:52:28,529 INFO L175 Difference]: Start difference. First operand has 472 places, 663 transitions, 11106 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:52:28,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 687 transitions, 12756 flow [2024-06-28 03:52:33,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 687 transitions, 12621 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:52:33,696 INFO L231 Difference]: Finished difference. Result has 473 places, 663 transitions, 11102 flow [2024-06-28 03:52:33,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10971, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11102, PETRI_PLACES=473, PETRI_TRANSITIONS=663} [2024-06-28 03:52:33,709 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-28 03:52:33,709 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 663 transitions, 11102 flow [2024-06-28 03:52:33,709 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 03:52:33,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:33,709 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 03:52:33,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:52:33,709 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 03:52:33,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash -891830944, now seen corresponding path program 1 times [2024-06-28 03:52:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546316705] [2024-06-28 03:52:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:35,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:35,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546316705] [2024-06-28 03:52:35,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546316705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:35,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:35,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:52:35,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109848954] [2024-06-28 03:52:35,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:35,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:52:35,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:35,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:52:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:52:35,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:35,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 663 transitions, 11102 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:52:35,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:35,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:35,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:37,777 INFO L124 PetriNetUnfolderBase]: 5088/7908 cut-off events. [2024-06-28 03:52:37,777 INFO L125 PetriNetUnfolderBase]: For 1806648/1806651 co-relation queries the response was YES. [2024-06-28 03:52:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94421 conditions, 7908 events. 5088/7908 cut-off events. For 1806648/1806651 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 48225 event pairs, 919 based on Foata normal form. 50/7950 useless extension candidates. Maximal degree in co-relation 94200. Up to 6429 conditions per place. [2024-06-28 03:52:37,950 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 611 selfloop transitions, 102 changer transitions 5/722 dead transitions. [2024-06-28 03:52:37,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 722 transitions, 13562 flow [2024-06-28 03:52:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:52:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:52:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 03:52:37,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-28 03:52:37,952 INFO L175 Difference]: Start difference. First operand has 473 places, 663 transitions, 11102 flow. Second operand 11 states and 206 transitions. [2024-06-28 03:52:37,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 722 transitions, 13562 flow [2024-06-28 03:52:43,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 722 transitions, 13432 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:52:43,477 INFO L231 Difference]: Finished difference. Result has 479 places, 672 transitions, 11484 flow [2024-06-28 03:52:43,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10972, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11484, PETRI_PLACES=479, PETRI_TRANSITIONS=672} [2024-06-28 03:52:43,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 03:52:43,477 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 672 transitions, 11484 flow [2024-06-28 03:52:43,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:52:43,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:43,478 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 03:52:43,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:52:43,478 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 03:52:43,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:43,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1483783028, now seen corresponding path program 2 times [2024-06-28 03:52:43,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:43,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288160910] [2024-06-28 03:52:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:43,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:44,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288160910] [2024-06-28 03:52:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288160910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:44,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:44,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:52:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840570461] [2024-06-28 03:52:44,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:44,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:52:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:52:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:52:44,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:44,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 672 transitions, 11484 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:52:44,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:44,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:44,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:47,505 INFO L124 PetriNetUnfolderBase]: 5098/7950 cut-off events. [2024-06-28 03:52:47,505 INFO L125 PetriNetUnfolderBase]: For 1896861/1896864 co-relation queries the response was YES. [2024-06-28 03:52:47,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89751 conditions, 7950 events. 5098/7950 cut-off events. For 1896861/1896864 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 48844 event pairs, 1005 based on Foata normal form. 112/8054 useless extension candidates. Maximal degree in co-relation 89527. Up to 6728 conditions per place. [2024-06-28 03:52:47,668 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 604 selfloop transitions, 99 changer transitions 6/713 dead transitions. [2024-06-28 03:52:47,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 713 transitions, 13399 flow [2024-06-28 03:52:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:52:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:52:47,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 03:52:47,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-28 03:52:47,669 INFO L175 Difference]: Start difference. First operand has 479 places, 672 transitions, 11484 flow. Second operand 11 states and 196 transitions. [2024-06-28 03:52:47,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 713 transitions, 13399 flow [2024-06-28 03:52:53,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 713 transitions, 13132 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-28 03:52:53,420 INFO L231 Difference]: Finished difference. Result has 484 places, 672 transitions, 11565 flow [2024-06-28 03:52:53,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11245, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11565, PETRI_PLACES=484, PETRI_TRANSITIONS=672} [2024-06-28 03:52:53,421 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-28 03:52:53,421 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 672 transitions, 11565 flow [2024-06-28 03:52:53,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:52:53,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:53,421 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 03:52:53,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:52:53,422 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 03:52:53,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:53,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1488544938, now seen corresponding path program 1 times [2024-06-28 03:52:53,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:53,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687785006] [2024-06-28 03:52:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:53,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:54,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:54,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687785006] [2024-06-28 03:52:54,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687785006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:54,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:54,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:52:54,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901858545] [2024-06-28 03:52:54,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:54,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:52:54,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:52:54,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:52:54,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:52:54,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 672 transitions, 11565 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:52:54,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:54,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:52:54,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:57,442 INFO L124 PetriNetUnfolderBase]: 5018/7827 cut-off events. [2024-06-28 03:52:57,442 INFO L125 PetriNetUnfolderBase]: For 1233759/1233759 co-relation queries the response was YES. [2024-06-28 03:52:57,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88129 conditions, 7827 events. 5018/7827 cut-off events. For 1233759/1233759 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 48030 event pairs, 1014 based on Foata normal form. 2/7826 useless extension candidates. Maximal degree in co-relation 87904. Up to 7499 conditions per place. [2024-06-28 03:52:57,587 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 650 selfloop transitions, 42 changer transitions 0/696 dead transitions. [2024-06-28 03:52:57,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 696 transitions, 13141 flow [2024-06-28 03:52:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:52:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:52:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:52:57,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 03:52:57,588 INFO L175 Difference]: Start difference. First operand has 484 places, 672 transitions, 11565 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:52:57,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 696 transitions, 13141 flow [2024-06-28 03:53:03,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 696 transitions, 12917 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 03:53:03,621 INFO L231 Difference]: Finished difference. Result has 485 places, 674 transitions, 11514 flow [2024-06-28 03:53:03,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11341, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11514, PETRI_PLACES=485, PETRI_TRANSITIONS=674} [2024-06-28 03:53:03,622 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-28 03:53:03,622 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 674 transitions, 11514 flow [2024-06-28 03:53:03,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:03,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:03,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:53:03,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:53:03,623 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 03:53:03,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1488551448, now seen corresponding path program 2 times [2024-06-28 03:53:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920275848] [2024-06-28 03:53:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:03,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:04,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920275848] [2024-06-28 03:53:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920275848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:53:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858525581] [2024-06-28 03:53:04,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:04,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:53:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:53:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:53:04,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:53:04,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 674 transitions, 11514 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:04,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:04,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:53:04,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:07,331 INFO L124 PetriNetUnfolderBase]: 5026/7839 cut-off events. [2024-06-28 03:53:07,331 INFO L125 PetriNetUnfolderBase]: For 1245918/1245918 co-relation queries the response was YES. [2024-06-28 03:53:07,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87887 conditions, 7839 events. 5026/7839 cut-off events. For 1245918/1245918 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 48173 event pairs, 1007 based on Foata normal form. 2/7838 useless extension candidates. Maximal degree in co-relation 87661. Up to 7491 conditions per place. [2024-06-28 03:53:07,494 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 649 selfloop transitions, 47 changer transitions 0/700 dead transitions. [2024-06-28 03:53:07,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 700 transitions, 13148 flow [2024-06-28 03:53:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:53:07,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 03:53:07,495 INFO L175 Difference]: Start difference. First operand has 485 places, 674 transitions, 11514 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:53:07,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 700 transitions, 13148 flow [2024-06-28 03:53:13,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 700 transitions, 12991 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:53:13,421 INFO L231 Difference]: Finished difference. Result has 488 places, 678 transitions, 11613 flow [2024-06-28 03:53:13,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11357, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11613, PETRI_PLACES=488, PETRI_TRANSITIONS=678} [2024-06-28 03:53:13,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-28 03:53:13,422 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 678 transitions, 11613 flow [2024-06-28 03:53:13,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:13,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:13,422 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 03:53:13,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:53:13,422 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 03:53:13,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:13,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1488366998, now seen corresponding path program 3 times [2024-06-28 03:53:13,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:13,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444129349] [2024-06-28 03:53:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:13,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:14,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444129349] [2024-06-28 03:53:14,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444129349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:14,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:14,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:53:14,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108542834] [2024-06-28 03:53:14,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:14,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:53:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:53:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:53:14,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:53:14,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 678 transitions, 11613 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:53:14,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:14,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:53:14,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:17,207 INFO L124 PetriNetUnfolderBase]: 5062/7895 cut-off events. [2024-06-28 03:53:17,208 INFO L125 PetriNetUnfolderBase]: For 1319767/1319767 co-relation queries the response was YES. [2024-06-28 03:53:17,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88926 conditions, 7895 events. 5062/7895 cut-off events. For 1319767/1319767 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 48610 event pairs, 1015 based on Foata normal form. 10/7902 useless extension candidates. Maximal degree in co-relation 88698. Up to 7513 conditions per place. [2024-06-28 03:53:17,387 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 658 selfloop transitions, 45 changer transitions 0/707 dead transitions. [2024-06-28 03:53:17,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 707 transitions, 13313 flow [2024-06-28 03:53:17,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:53:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:53:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 03:53:17,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:53:17,388 INFO L175 Difference]: Start difference. First operand has 488 places, 678 transitions, 11613 flow. Second operand 10 states and 170 transitions. [2024-06-28 03:53:17,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 707 transitions, 13313 flow [2024-06-28 03:53:23,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 707 transitions, 13136 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 03:53:23,048 INFO L231 Difference]: Finished difference. Result has 493 places, 679 transitions, 11589 flow [2024-06-28 03:53:23,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11436, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11589, PETRI_PLACES=493, PETRI_TRANSITIONS=679} [2024-06-28 03:53:23,048 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-28 03:53:23,048 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 679 transitions, 11589 flow [2024-06-28 03:53:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:53:23,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:23,049 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 03:53:23,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:53:23,049 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 03:53:23,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1660440182, now seen corresponding path program 3 times [2024-06-28 03:53:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:23,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315796051] [2024-06-28 03:53:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:23,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:24,199 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 03:53:24,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315796051] [2024-06-28 03:53:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315796051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:24,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:24,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:53:24,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616037537] [2024-06-28 03:53:24,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:24,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:53:24,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:53:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:53:24,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:53:24,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 679 transitions, 11589 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:24,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:24,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:53:24,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:26,653 INFO L124 PetriNetUnfolderBase]: 5070/7907 cut-off events. [2024-06-28 03:53:26,653 INFO L125 PetriNetUnfolderBase]: For 1289017/1289017 co-relation queries the response was YES. [2024-06-28 03:53:26,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89210 conditions, 7907 events. 5070/7907 cut-off events. For 1289017/1289017 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 48649 event pairs, 1039 based on Foata normal form. 2/7906 useless extension candidates. Maximal degree in co-relation 88980. Up to 7633 conditions per place. [2024-06-28 03:53:26,819 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 671 selfloop transitions, 25 changer transitions 0/700 dead transitions. [2024-06-28 03:53:26,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 700 transitions, 13171 flow [2024-06-28 03:53:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:53:26,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-28 03:53:26,820 INFO L175 Difference]: Start difference. First operand has 493 places, 679 transitions, 11589 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:53:26,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 700 transitions, 13171 flow [2024-06-28 03:53:33,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 700 transitions, 13074 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:53:33,428 INFO L231 Difference]: Finished difference. Result has 495 places, 681 transitions, 11641 flow [2024-06-28 03:53:33,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11492, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11641, PETRI_PLACES=495, PETRI_TRANSITIONS=681} [2024-06-28 03:53:33,428 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 454 predicate places. [2024-06-28 03:53:33,429 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 681 transitions, 11641 flow [2024-06-28 03:53:33,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:33,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:33,429 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 03:53:33,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:53:33,429 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 03:53:33,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash -601603120, now seen corresponding path program 4 times [2024-06-28 03:53:33,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:33,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366295638] [2024-06-28 03:53:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:34,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:34,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366295638] [2024-06-28 03:53:34,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366295638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:34,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:34,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:53:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873214779] [2024-06-28 03:53:34,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:34,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:53:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:34,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:53:34,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:53:34,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:53:34,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 681 transitions, 11641 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:34,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:34,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:53:34,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:37,357 INFO L124 PetriNetUnfolderBase]: 5078/7919 cut-off events. [2024-06-28 03:53:37,357 INFO L125 PetriNetUnfolderBase]: For 1303848/1303848 co-relation queries the response was YES. [2024-06-28 03:53:37,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89342 conditions, 7919 events. 5078/7919 cut-off events. For 1303848/1303848 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 48812 event pairs, 1039 based on Foata normal form. 2/7918 useless extension candidates. Maximal degree in co-relation 89111. Up to 7631 conditions per place. [2024-06-28 03:53:37,504 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 670 selfloop transitions, 28 changer transitions 0/702 dead transitions. [2024-06-28 03:53:37,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 702 transitions, 13219 flow [2024-06-28 03:53:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:53:37,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 03:53:37,506 INFO L175 Difference]: Start difference. First operand has 495 places, 681 transitions, 11641 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:53:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 702 transitions, 13219 flow [2024-06-28 03:53:43,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 702 transitions, 13098 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 03:53:43,335 INFO L231 Difference]: Finished difference. Result has 500 places, 683 transitions, 11679 flow [2024-06-28 03:53:43,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11520, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11679, PETRI_PLACES=500, PETRI_TRANSITIONS=683} [2024-06-28 03:53:43,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-28 03:53:43,336 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 683 transitions, 11679 flow [2024-06-28 03:53:43,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:43,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:43,336 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 03:53:43,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:53:43,337 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 03:53:43,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash -608043680, now seen corresponding path program 4 times [2024-06-28 03:53:43,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:43,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548253759] [2024-06-28 03:53:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:43,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:44,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:44,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548253759] [2024-06-28 03:53:44,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548253759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:44,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:44,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:53:44,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133688050] [2024-06-28 03:53:44,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:44,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:53:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:53:44,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:53:44,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:53:44,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 683 transitions, 11679 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:44,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:44,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:53:44,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:47,046 INFO L124 PetriNetUnfolderBase]: 5114/7975 cut-off events. [2024-06-28 03:53:47,046 INFO L125 PetriNetUnfolderBase]: For 1383655/1383655 co-relation queries the response was YES. [2024-06-28 03:53:47,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90386 conditions, 7975 events. 5114/7975 cut-off events. For 1383655/1383655 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 49173 event pairs, 1046 based on Foata normal form. 10/7982 useless extension candidates. Maximal degree in co-relation 90154. Up to 7647 conditions per place. [2024-06-28 03:53:47,212 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 677 selfloop transitions, 28 changer transitions 0/709 dead transitions. [2024-06-28 03:53:47,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 709 transitions, 13377 flow [2024-06-28 03:53:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:53:47,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:53:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 03:53:47,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 03:53:47,213 INFO L175 Difference]: Start difference. First operand has 500 places, 683 transitions, 11679 flow. Second operand 10 states and 164 transitions. [2024-06-28 03:53:47,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 709 transitions, 13377 flow [2024-06-28 03:53:53,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 709 transitions, 13230 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 03:53:53,864 INFO L231 Difference]: Finished difference. Result has 502 places, 684 transitions, 11657 flow [2024-06-28 03:53:53,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11532, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11657, PETRI_PLACES=502, PETRI_TRANSITIONS=684} [2024-06-28 03:53:53,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-28 03:53:53,865 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 684 transitions, 11657 flow [2024-06-28 03:53:53,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:53:53,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:53:53,865 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 03:53:53,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:53:53,866 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 03:53:53,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:53:53,866 INFO L85 PathProgramCache]: Analyzing trace with hash -601372480, now seen corresponding path program 5 times [2024-06-28 03:53:53,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:53:53,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666711261] [2024-06-28 03:53:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:53:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:53:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:53:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:53:54,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:53:54,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666711261] [2024-06-28 03:53:54,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666711261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:53:54,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:53:54,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:53:54,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963135980] [2024-06-28 03:53:54,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:53:54,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:53:54,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:53:54,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:53:54,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:53:54,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:53:54,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 684 transitions, 11657 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 03:53:54,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:53:54,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:53:54,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:53:57,284 INFO L124 PetriNetUnfolderBase]: 5122/7987 cut-off events. [2024-06-28 03:53:57,284 INFO L125 PetriNetUnfolderBase]: For 1349556/1349556 co-relation queries the response was YES. [2024-06-28 03:53:57,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90643 conditions, 7987 events. 5122/7987 cut-off events. For 1349556/1349556 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 49280 event pairs, 1039 based on Foata normal form. 2/7986 useless extension candidates. Maximal degree in co-relation 90410. Up to 7713 conditions per place. [2024-06-28 03:53:57,450 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 678 selfloop transitions, 23 changer transitions 0/705 dead transitions. [2024-06-28 03:53:57,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 705 transitions, 13235 flow [2024-06-28 03:53:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:53:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:53:57,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 03:53:57,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:53:57,451 INFO L175 Difference]: Start difference. First operand has 502 places, 684 transitions, 11657 flow. Second operand 9 states and 144 transitions. [2024-06-28 03:53:57,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 705 transitions, 13235 flow [2024-06-28 03:54:04,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 705 transitions, 13142 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:54:04,578 INFO L231 Difference]: Finished difference. Result has 503 places, 686 transitions, 11719 flow [2024-06-28 03:54:04,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11564, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11719, PETRI_PLACES=503, PETRI_TRANSITIONS=686} [2024-06-28 03:54:04,579 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-28 03:54:04,579 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 686 transitions, 11719 flow [2024-06-28 03:54:04,579 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 03:54:04,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:04,579 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 03:54:04,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:54:04,580 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:04,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1167916604, now seen corresponding path program 6 times [2024-06-28 03:54:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:04,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789435795] [2024-06-28 03:54:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:04,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:05,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:05,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789435795] [2024-06-28 03:54:05,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789435795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:05,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:54:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765252652] [2024-06-28 03:54:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:05,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:54:05,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:05,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:54:05,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:54:05,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:54:05,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 686 transitions, 11719 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:05,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:05,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:54:05,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:08,312 INFO L124 PetriNetUnfolderBase]: 5130/7995 cut-off events. [2024-06-28 03:54:08,313 INFO L125 PetriNetUnfolderBase]: For 1364185/1364185 co-relation queries the response was YES. [2024-06-28 03:54:08,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90767 conditions, 7995 events. 5130/7995 cut-off events. For 1364185/1364185 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 49315 event pairs, 1122 based on Foata normal form. 2/7994 useless extension candidates. Maximal degree in co-relation 90533. Up to 7740 conditions per place. [2024-06-28 03:54:08,470 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 679 selfloop transitions, 20 changer transitions 0/703 dead transitions. [2024-06-28 03:54:08,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 703 transitions, 13295 flow [2024-06-28 03:54:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 03:54:08,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:54:08,471 INFO L175 Difference]: Start difference. First operand has 503 places, 686 transitions, 11719 flow. Second operand 9 states and 140 transitions. [2024-06-28 03:54:08,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 703 transitions, 13295 flow [2024-06-28 03:54:14,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 703 transitions, 13156 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 03:54:14,613 INFO L231 Difference]: Finished difference. Result has 505 places, 688 transitions, 11733 flow [2024-06-28 03:54:14,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11580, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11733, PETRI_PLACES=505, PETRI_TRANSITIONS=688} [2024-06-28 03:54:14,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-28 03:54:14,616 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 688 transitions, 11733 flow [2024-06-28 03:54:14,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:14,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:14,617 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 03:54:14,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:54:14,617 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:14,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:14,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1122892752, now seen corresponding path program 7 times [2024-06-28 03:54:14,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:14,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376278830] [2024-06-28 03:54:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:14,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:15,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376278830] [2024-06-28 03:54:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376278830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:15,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:15,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:54:15,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535376999] [2024-06-28 03:54:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:54:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:54:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:54:15,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:54:15,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 688 transitions, 11733 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:15,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:15,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:54:15,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:18,260 INFO L124 PetriNetUnfolderBase]: 5146/8021 cut-off events. [2024-06-28 03:54:18,261 INFO L125 PetriNetUnfolderBase]: For 1382906/1382906 co-relation queries the response was YES. [2024-06-28 03:54:18,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91121 conditions, 8021 events. 5146/8021 cut-off events. For 1382906/1382906 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 49556 event pairs, 1117 based on Foata normal form. 2/8020 useless extension candidates. Maximal degree in co-relation 90886. Up to 7750 conditions per place. [2024-06-28 03:54:18,427 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 680 selfloop transitions, 23 changer transitions 0/707 dead transitions. [2024-06-28 03:54:18,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 707 transitions, 13317 flow [2024-06-28 03:54:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 03:54:18,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 03:54:18,428 INFO L175 Difference]: Start difference. First operand has 505 places, 688 transitions, 11733 flow. Second operand 9 states and 141 transitions. [2024-06-28 03:54:18,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 707 transitions, 13317 flow [2024-06-28 03:54:25,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 707 transitions, 13188 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 03:54:25,233 INFO L231 Difference]: Finished difference. Result has 510 places, 692 transitions, 11785 flow [2024-06-28 03:54:25,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11604, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11785, PETRI_PLACES=510, PETRI_TRANSITIONS=692} [2024-06-28 03:54:25,233 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-28 03:54:25,234 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 692 transitions, 11785 flow [2024-06-28 03:54:25,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:25,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:25,234 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 03:54:25,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:54:25,234 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:25,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash 769804480, now seen corresponding path program 8 times [2024-06-28 03:54:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557549461] [2024-06-28 03:54:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:25,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:26,199 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 03:54:26,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:26,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557549461] [2024-06-28 03:54:26,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557549461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:26,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:26,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:54:26,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100529242] [2024-06-28 03:54:26,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:26,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:54:26,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:54:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:54:26,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:54:26,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 692 transitions, 11785 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:26,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:26,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:54:26,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:28,616 INFO L124 PetriNetUnfolderBase]: 5154/8035 cut-off events. [2024-06-28 03:54:28,616 INFO L125 PetriNetUnfolderBase]: For 1403782/1403782 co-relation queries the response was YES. [2024-06-28 03:54:28,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91500 conditions, 8035 events. 5154/8035 cut-off events. For 1403782/1403782 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 49602 event pairs, 1103 based on Foata normal form. 2/8034 useless extension candidates. Maximal degree in co-relation 91263. Up to 7771 conditions per place. [2024-06-28 03:54:28,785 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 686 selfloop transitions, 19 changer transitions 0/709 dead transitions. [2024-06-28 03:54:28,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 709 transitions, 13345 flow [2024-06-28 03:54:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 03:54:28,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:54:28,787 INFO L175 Difference]: Start difference. First operand has 510 places, 692 transitions, 11785 flow. Second operand 9 states and 138 transitions. [2024-06-28 03:54:28,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 709 transitions, 13345 flow [2024-06-28 03:54:35,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 709 transitions, 13208 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 03:54:35,908 INFO L231 Difference]: Finished difference. Result has 514 places, 694 transitions, 11807 flow [2024-06-28 03:54:35,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11648, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11807, PETRI_PLACES=514, PETRI_TRANSITIONS=694} [2024-06-28 03:54:35,909 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-28 03:54:35,909 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 694 transitions, 11807 flow [2024-06-28 03:54:35,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:35,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:35,909 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 03:54:35,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:54:35,909 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:35,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash 484704610, now seen corresponding path program 9 times [2024-06-28 03:54:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:35,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748470158] [2024-06-28 03:54:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:36,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:36,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748470158] [2024-06-28 03:54:36,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748470158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:36,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:36,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:54:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12255587] [2024-06-28 03:54:36,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:36,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:54:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:54:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:54:37,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:54:37,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 694 transitions, 11807 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:37,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:37,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:54:37,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:39,814 INFO L124 PetriNetUnfolderBase]: 5182/8077 cut-off events. [2024-06-28 03:54:39,815 INFO L125 PetriNetUnfolderBase]: For 1471148/1471148 co-relation queries the response was YES. [2024-06-28 03:54:39,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92350 conditions, 8077 events. 5182/8077 cut-off events. For 1471148/1471148 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 49914 event pairs, 1125 based on Foata normal form. 8/8082 useless extension candidates. Maximal degree in co-relation 92112. Up to 7788 conditions per place. [2024-06-28 03:54:39,960 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 687 selfloop transitions, 22 changer transitions 0/713 dead transitions. [2024-06-28 03:54:39,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 713 transitions, 13421 flow [2024-06-28 03:54:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:39,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 03:54:39,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 03:54:39,961 INFO L175 Difference]: Start difference. First operand has 514 places, 694 transitions, 11807 flow. Second operand 9 states and 141 transitions. [2024-06-28 03:54:39,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 713 transitions, 13421 flow [2024-06-28 03:54:47,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 713 transitions, 13278 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 03:54:47,013 INFO L231 Difference]: Finished difference. Result has 516 places, 695 transitions, 11784 flow [2024-06-28 03:54:47,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11664, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11784, PETRI_PLACES=516, PETRI_TRANSITIONS=695} [2024-06-28 03:54:47,013 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-28 03:54:47,013 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 695 transitions, 11784 flow [2024-06-28 03:54:47,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:47,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:47,014 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 03:54:47,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:54:47,014 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:47,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:47,014 INFO L85 PathProgramCache]: Analyzing trace with hash 484473970, now seen corresponding path program 10 times [2024-06-28 03:54:47,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:47,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716524535] [2024-06-28 03:54:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:48,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:48,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716524535] [2024-06-28 03:54:48,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716524535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:48,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:48,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:54:48,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422936111] [2024-06-28 03:54:48,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:48,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:54:48,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:48,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:54:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:54:48,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:54:48,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 695 transitions, 11784 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:48,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:48,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:54:48,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:50,748 INFO L124 PetriNetUnfolderBase]: 5243/8172 cut-off events. [2024-06-28 03:54:50,748 INFO L125 PetriNetUnfolderBase]: For 1554826/1554826 co-relation queries the response was YES. [2024-06-28 03:54:50,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94707 conditions, 8172 events. 5243/8172 cut-off events. For 1554826/1554826 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 50633 event pairs, 1135 based on Foata normal form. 8/8177 useless extension candidates. Maximal degree in co-relation 94468. Up to 7745 conditions per place. [2024-06-28 03:54:50,936 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 682 selfloop transitions, 39 changer transitions 0/725 dead transitions. [2024-06-28 03:54:50,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 725 transitions, 14342 flow [2024-06-28 03:54:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:54:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:54:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:54:50,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 03:54:50,937 INFO L175 Difference]: Start difference. First operand has 516 places, 695 transitions, 11784 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:54:50,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 725 transitions, 14342 flow [2024-06-28 03:54:58,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 725 transitions, 14258 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:54:58,502 INFO L231 Difference]: Finished difference. Result has 519 places, 700 transitions, 12118 flow [2024-06-28 03:54:58,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11700, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12118, PETRI_PLACES=519, PETRI_TRANSITIONS=700} [2024-06-28 03:54:58,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-28 03:54:58,503 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 700 transitions, 12118 flow [2024-06-28 03:54:58,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:58,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:58,503 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 03:54:58,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:54:58,503 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:58,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:58,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1116452192, now seen corresponding path program 5 times [2024-06-28 03:54:58,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:58,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604219099] [2024-06-28 03:54:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:59,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604219099] [2024-06-28 03:54:59,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604219099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:59,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:59,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:54:59,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178247427] [2024-06-28 03:54:59,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:59,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:54:59,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:54:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:54:59,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:54:59,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 700 transitions, 12118 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:54:59,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:59,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:54:59,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:02,386 INFO L124 PetriNetUnfolderBase]: 5266/8209 cut-off events. [2024-06-28 03:55:02,386 INFO L125 PetriNetUnfolderBase]: For 1580205/1580205 co-relation queries the response was YES. [2024-06-28 03:55:02,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95580 conditions, 8209 events. 5266/8209 cut-off events. For 1580205/1580205 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 50882 event pairs, 1153 based on Foata normal form. 10/8216 useless extension candidates. Maximal degree in co-relation 95339. Up to 7898 conditions per place. [2024-06-28 03:55:02,554 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 695 selfloop transitions, 23 changer transitions 0/722 dead transitions. [2024-06-28 03:55:02,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 722 transitions, 13834 flow [2024-06-28 03:55:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:55:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:55:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 03:55:02,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-06-28 03:55:02,556 INFO L175 Difference]: Start difference. First operand has 519 places, 700 transitions, 12118 flow. Second operand 10 states and 158 transitions. [2024-06-28 03:55:02,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 722 transitions, 13834 flow [2024-06-28 03:55:09,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 722 transitions, 13720 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:09,705 INFO L231 Difference]: Finished difference. Result has 524 places, 701 transitions, 12133 flow [2024-06-28 03:55:09,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12010, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12133, PETRI_PLACES=524, PETRI_TRANSITIONS=701} [2024-06-28 03:55:09,705 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-28 03:55:09,705 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 701 transitions, 12133 flow [2024-06-28 03:55:09,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:55:09,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:09,706 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 03:55:09,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:55:09,706 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:09,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1344531282, now seen corresponding path program 11 times [2024-06-28 03:55:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853480021] [2024-06-28 03:55:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:10,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853480021] [2024-06-28 03:55:10,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853480021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:10,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:10,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:55:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584094086] [2024-06-28 03:55:10,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:10,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:55:10,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:10,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:55:10,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:55:10,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:55:10,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 701 transitions, 12133 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:55:10,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:10,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:55:10,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:13,382 INFO L124 PetriNetUnfolderBase]: 5240/8172 cut-off events. [2024-06-28 03:55:13,383 INFO L125 PetriNetUnfolderBase]: For 1509500/1509500 co-relation queries the response was YES. [2024-06-28 03:55:13,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93243 conditions, 8172 events. 5240/8172 cut-off events. For 1509500/1509500 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 50639 event pairs, 1141 based on Foata normal form. 11/8180 useless extension candidates. Maximal degree in co-relation 93001. Up to 7804 conditions per place. [2024-06-28 03:55:13,582 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 681 selfloop transitions, 36 changer transitions 0/721 dead transitions. [2024-06-28 03:55:13,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 721 transitions, 13803 flow [2024-06-28 03:55:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:55:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:55:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:55:13,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 03:55:13,583 INFO L175 Difference]: Start difference. First operand has 524 places, 701 transitions, 12133 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:55:13,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 721 transitions, 13803 flow [2024-06-28 03:55:21,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 721 transitions, 13594 flow, removed 83 selfloop flow, removed 8 redundant places. [2024-06-28 03:55:21,457 INFO L231 Difference]: Finished difference. Result has 526 places, 701 transitions, 12021 flow [2024-06-28 03:55:21,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11924, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12021, PETRI_PLACES=526, PETRI_TRANSITIONS=701} [2024-06-28 03:55:21,458 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-28 03:55:21,458 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 701 transitions, 12021 flow [2024-06-28 03:55:21,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:55:21,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:21,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:21,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:55:21,458 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:21,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:21,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1516635330, now seen corresponding path program 1 times [2024-06-28 03:55:21,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:21,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676427915] [2024-06-28 03:55:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:21,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:22,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676427915] [2024-06-28 03:55:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676427915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:22,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:22,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633520417] [2024-06-28 03:55:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:22,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:22,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:55:22,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 701 transitions, 12021 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 03:55:22,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:22,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:55:22,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:25,325 INFO L124 PetriNetUnfolderBase]: 5373/8378 cut-off events. [2024-06-28 03:55:25,325 INFO L125 PetriNetUnfolderBase]: For 1679203/1679203 co-relation queries the response was YES. [2024-06-28 03:55:25,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97912 conditions, 8378 events. 5373/8378 cut-off events. For 1679203/1679203 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 52022 event pairs, 960 based on Foata normal form. 8/8376 useless extension candidates. Maximal degree in co-relation 97668. Up to 7734 conditions per place. [2024-06-28 03:55:25,499 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 684 selfloop transitions, 50 changer transitions 0/738 dead transitions. [2024-06-28 03:55:25,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 738 transitions, 14384 flow [2024-06-28 03:55:25,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:55:25,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 03:55:25,500 INFO L175 Difference]: Start difference. First operand has 526 places, 701 transitions, 12021 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:55:25,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 738 transitions, 14384 flow [2024-06-28 03:55:34,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 738 transitions, 14276 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:55:34,199 INFO L231 Difference]: Finished difference. Result has 528 places, 707 transitions, 12221 flow [2024-06-28 03:55:34,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11915, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12221, PETRI_PLACES=528, PETRI_TRANSITIONS=707} [2024-06-28 03:55:34,200 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 487 predicate places. [2024-06-28 03:55:34,200 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 707 transitions, 12221 flow [2024-06-28 03:55:34,200 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 03:55:34,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:34,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:55:34,201 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:34,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1480601954, now seen corresponding path program 2 times [2024-06-28 03:55:34,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:34,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676478590] [2024-06-28 03:55:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:34,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:35,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:35,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676478590] [2024-06-28 03:55:35,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676478590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:35,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:35,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123410132] [2024-06-28 03:55:35,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:35,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:35,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:35,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:35,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:35,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:55:35,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 707 transitions, 12221 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 03:55:35,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:35,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:55:35,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:38,003 INFO L124 PetriNetUnfolderBase]: 5355/8350 cut-off events. [2024-06-28 03:55:38,003 INFO L125 PetriNetUnfolderBase]: For 1611100/1611100 co-relation queries the response was YES. [2024-06-28 03:55:38,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97325 conditions, 8350 events. 5355/8350 cut-off events. For 1611100/1611100 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 51840 event pairs, 1005 based on Foata normal form. 8/8348 useless extension candidates. Maximal degree in co-relation 97078. Up to 7957 conditions per place. [2024-06-28 03:55:38,194 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 687 selfloop transitions, 36 changer transitions 0/727 dead transitions. [2024-06-28 03:55:38,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 727 transitions, 13822 flow [2024-06-28 03:55:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:55:38,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 03:55:38,196 INFO L175 Difference]: Start difference. First operand has 528 places, 707 transitions, 12221 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:55:38,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 727 transitions, 13822 flow [2024-06-28 03:55:46,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 727 transitions, 13737 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:46,408 INFO L231 Difference]: Finished difference. Result has 534 places, 708 transitions, 12243 flow [2024-06-28 03:55:46,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12136, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12243, PETRI_PLACES=534, PETRI_TRANSITIONS=708} [2024-06-28 03:55:46,409 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 493 predicate places. [2024-06-28 03:55:46,409 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 708 transitions, 12243 flow [2024-06-28 03:55:46,409 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 03:55:46,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:46,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:46,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:55:46,410 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:46,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:46,410 INFO L85 PathProgramCache]: Analyzing trace with hash 189301782, now seen corresponding path program 3 times [2024-06-28 03:55:46,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:46,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535172714] [2024-06-28 03:55:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:46,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:47,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:47,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535172714] [2024-06-28 03:55:47,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535172714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:47,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:47,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128560576] [2024-06-28 03:55:47,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:47,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:47,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:47,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:55:47,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 708 transitions, 12243 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 03:55:47,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:47,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:55:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:50,733 INFO L124 PetriNetUnfolderBase]: 5549/8650 cut-off events. [2024-06-28 03:55:50,734 INFO L125 PetriNetUnfolderBase]: For 1801999/1801999 co-relation queries the response was YES. [2024-06-28 03:55:50,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103497 conditions, 8650 events. 5549/8650 cut-off events. For 1801999/1801999 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 54213 event pairs, 1028 based on Foata normal form. 8/8648 useless extension candidates. Maximal degree in co-relation 103247. Up to 7777 conditions per place. [2024-06-28 03:55:51,023 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 660 selfloop transitions, 81 changer transitions 0/745 dead transitions. [2024-06-28 03:55:51,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 745 transitions, 14554 flow [2024-06-28 03:55:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:55:51,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 03:55:51,040 INFO L175 Difference]: Start difference. First operand has 534 places, 708 transitions, 12243 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:55:51,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 745 transitions, 14554 flow [2024-06-28 03:55:59,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 745 transitions, 14453 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:59,254 INFO L231 Difference]: Finished difference. Result has 539 places, 716 transitions, 12555 flow [2024-06-28 03:55:59,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12142, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12555, PETRI_PLACES=539, PETRI_TRANSITIONS=716} [2024-06-28 03:55:59,255 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 498 predicate places. [2024-06-28 03:55:59,255 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 716 transitions, 12555 flow [2024-06-28 03:55:59,256 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 03:55:59,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:59,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:59,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:55:59,256 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:59,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:59,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1019632188, now seen corresponding path program 4 times [2024-06-28 03:55:59,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:59,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976964164] [2024-06-28 03:55:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:59,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:00,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:00,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976964164] [2024-06-28 03:56:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976964164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:00,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:00,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244627932] [2024-06-28 03:56:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:00,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:00,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:00,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:00,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:56:00,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 716 transitions, 12555 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 03:56:00,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:00,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:56:00,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:03,857 INFO L124 PetriNetUnfolderBase]: 5526/8617 cut-off events. [2024-06-28 03:56:03,858 INFO L125 PetriNetUnfolderBase]: For 1759310/1759310 co-relation queries the response was YES. [2024-06-28 03:56:04,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102290 conditions, 8617 events. 5526/8617 cut-off events. For 1759310/1759310 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 53992 event pairs, 1022 based on Foata normal form. 10/8617 useless extension candidates. Maximal degree in co-relation 102038. Up to 7961 conditions per place. [2024-06-28 03:56:04,055 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 644 selfloop transitions, 92 changer transitions 0/740 dead transitions. [2024-06-28 03:56:04,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 740 transitions, 14329 flow [2024-06-28 03:56:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:56:04,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:56:04,057 INFO L175 Difference]: Start difference. First operand has 539 places, 716 transitions, 12555 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:56:04,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 740 transitions, 14329 flow [2024-06-28 03:56:12,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 740 transitions, 14203 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:12,465 INFO L231 Difference]: Finished difference. Result has 543 places, 716 transitions, 12627 flow [2024-06-28 03:56:12,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12429, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12627, PETRI_PLACES=543, PETRI_TRANSITIONS=716} [2024-06-28 03:56:12,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 502 predicate places. [2024-06-28 03:56:12,466 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 716 transitions, 12627 flow [2024-06-28 03:56:12,466 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 03:56:12,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:12,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:12,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:56:12,466 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:12,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1861180256, now seen corresponding path program 5 times [2024-06-28 03:56:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497356929] [2024-06-28 03:56:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:12,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:13,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:13,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497356929] [2024-06-28 03:56:13,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497356929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:13,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:13,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:13,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673065849] [2024-06-28 03:56:13,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:13,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:13,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:13,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:56:13,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 716 transitions, 12627 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 03:56:13,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:13,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:56:13,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:16,870 INFO L124 PetriNetUnfolderBase]: 5541/8640 cut-off events. [2024-06-28 03:56:16,870 INFO L125 PetriNetUnfolderBase]: For 1747105/1747105 co-relation queries the response was YES. [2024-06-28 03:56:17,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102683 conditions, 8640 events. 5541/8640 cut-off events. For 1747105/1747105 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 54110 event pairs, 1177 based on Foata normal form. 8/8638 useless extension candidates. Maximal degree in co-relation 102429. Up to 8297 conditions per place. [2024-06-28 03:56:17,078 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 695 selfloop transitions, 32 changer transitions 0/731 dead transitions. [2024-06-28 03:56:17,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 731 transitions, 14246 flow [2024-06-28 03:56:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 03:56:17,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41785714285714287 [2024-06-28 03:56:17,080 INFO L175 Difference]: Start difference. First operand has 543 places, 716 transitions, 12627 flow. Second operand 7 states and 117 transitions. [2024-06-28 03:56:17,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 731 transitions, 14246 flow [2024-06-28 03:56:26,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 731 transitions, 14043 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:26,411 INFO L231 Difference]: Finished difference. Result has 543 places, 717 transitions, 12541 flow [2024-06-28 03:56:26,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12424, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12541, PETRI_PLACES=543, PETRI_TRANSITIONS=717} [2024-06-28 03:56:26,411 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 502 predicate places. [2024-06-28 03:56:26,411 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 717 transitions, 12541 flow [2024-06-28 03:56:26,412 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 03:56:26,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:26,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:26,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:56:26,412 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:26,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -917896672, now seen corresponding path program 6 times [2024-06-28 03:56:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:26,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388144427] [2024-06-28 03:56:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:27,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:27,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388144427] [2024-06-28 03:56:27,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388144427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:27,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:27,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:27,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335759617] [2024-06-28 03:56:27,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:27,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:27,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:56:27,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 717 transitions, 12541 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 03:56:27,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:27,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:56:27,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:30,745 INFO L124 PetriNetUnfolderBase]: 5518/8609 cut-off events. [2024-06-28 03:56:30,745 INFO L125 PetriNetUnfolderBase]: For 1676186/1676186 co-relation queries the response was YES. [2024-06-28 03:56:30,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100436 conditions, 8609 events. 5518/8609 cut-off events. For 1676186/1676186 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 53988 event pairs, 1154 based on Foata normal form. 10/8609 useless extension candidates. Maximal degree in co-relation 100182. Up to 8154 conditions per place. [2024-06-28 03:56:30,944 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 685 selfloop transitions, 45 changer transitions 0/734 dead transitions. [2024-06-28 03:56:30,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 734 transitions, 14251 flow [2024-06-28 03:56:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:56:30,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 03:56:30,958 INFO L175 Difference]: Start difference. First operand has 543 places, 717 transitions, 12541 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:56:30,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 734 transitions, 14251 flow [2024-06-28 03:56:38,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 734 transitions, 14142 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:38,841 INFO L231 Difference]: Finished difference. Result has 545 places, 717 transitions, 12535 flow [2024-06-28 03:56:38,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12432, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12535, PETRI_PLACES=545, PETRI_TRANSITIONS=717} [2024-06-28 03:56:38,842 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 504 predicate places. [2024-06-28 03:56:38,842 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 717 transitions, 12535 flow [2024-06-28 03:56:38,842 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 03:56:38,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:38,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:38,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:56:38,842 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:38,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1261024640, now seen corresponding path program 1 times [2024-06-28 03:56:38,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:38,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233840636] [2024-06-28 03:56:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:38,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:39,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:39,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233840636] [2024-06-28 03:56:39,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233840636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:39,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:39,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:56:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288294586] [2024-06-28 03:56:39,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:39,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:56:39,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:39,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:56:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:56:40,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:56:40,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 717 transitions, 12535 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:56:40,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:40,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:56:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:43,301 INFO L124 PetriNetUnfolderBase]: 5538/8639 cut-off events. [2024-06-28 03:56:43,301 INFO L125 PetriNetUnfolderBase]: For 1641916/1641916 co-relation queries the response was YES. [2024-06-28 03:56:43,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100925 conditions, 8639 events. 5538/8639 cut-off events. For 1641916/1641916 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 54192 event pairs, 1146 based on Foata normal form. 4/8633 useless extension candidates. Maximal degree in co-relation 100670. Up to 7869 conditions per place. [2024-06-28 03:56:43,489 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 624 selfloop transitions, 114 changer transitions 0/742 dead transitions. [2024-06-28 03:56:43,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 742 transitions, 14307 flow [2024-06-28 03:56:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:56:43,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 03:56:43,491 INFO L175 Difference]: Start difference. First operand has 545 places, 717 transitions, 12535 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:56:43,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 742 transitions, 14307 flow [2024-06-28 03:56:53,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 742 transitions, 14222 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:53,510 INFO L231 Difference]: Finished difference. Result has 548 places, 720 transitions, 12881 flow [2024-06-28 03:56:53,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12450, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12881, PETRI_PLACES=548, PETRI_TRANSITIONS=720} [2024-06-28 03:56:53,511 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 507 predicate places. [2024-06-28 03:56:53,511 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 720 transitions, 12881 flow [2024-06-28 03:56:53,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:56:53,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:53,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:53,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:56:53,512 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:53,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1892902250, now seen corresponding path program 2 times [2024-06-28 03:56:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:53,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414803285] [2024-06-28 03:56:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:53,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:54,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:54,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414803285] [2024-06-28 03:56:54,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414803285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:54,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:54,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:56:54,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965145636] [2024-06-28 03:56:54,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:54,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:56:54,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:54,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:56:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:56:54,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:56:54,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 720 transitions, 12881 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:56:54,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:54,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:56:54,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:57,817 INFO L124 PetriNetUnfolderBase]: 5590/8709 cut-off events. [2024-06-28 03:56:57,817 INFO L125 PetriNetUnfolderBase]: For 1713069/1713069 co-relation queries the response was YES. [2024-06-28 03:56:57,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104248 conditions, 8709 events. 5590/8709 cut-off events. For 1713069/1713069 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 54664 event pairs, 976 based on Foata normal form. 4/8703 useless extension candidates. Maximal degree in co-relation 103992. Up to 7684 conditions per place. [2024-06-28 03:56:58,005 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 580 selfloop transitions, 170 changer transitions 0/754 dead transitions. [2024-06-28 03:56:58,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 754 transitions, 15273 flow [2024-06-28 03:56:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:56:58,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-28 03:56:58,007 INFO L175 Difference]: Start difference. First operand has 548 places, 720 transitions, 12881 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:56:58,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 754 transitions, 15273 flow [2024-06-28 03:57:05,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 754 transitions, 14968 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:06,003 INFO L231 Difference]: Finished difference. Result has 551 places, 726 transitions, 13271 flow [2024-06-28 03:57:06,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12576, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13271, PETRI_PLACES=551, PETRI_TRANSITIONS=726} [2024-06-28 03:57:06,003 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 510 predicate places. [2024-06-28 03:57:06,004 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 726 transitions, 13271 flow [2024-06-28 03:57:06,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:57:06,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:06,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:57:06,004 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:06,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1019637148, now seen corresponding path program 3 times [2024-06-28 03:57:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270665780] [2024-06-28 03:57:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:07,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:07,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270665780] [2024-06-28 03:57:07,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270665780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:07,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:07,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:07,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667837731] [2024-06-28 03:57:07,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:07,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:07,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:57:07,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 726 transitions, 13271 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:57:07,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:07,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:57:07,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:10,731 INFO L124 PetriNetUnfolderBase]: 5594/8715 cut-off events. [2024-06-28 03:57:10,731 INFO L125 PetriNetUnfolderBase]: For 1737345/1737345 co-relation queries the response was YES. [2024-06-28 03:57:10,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104968 conditions, 8715 events. 5594/8715 cut-off events. For 1737345/1737345 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 54605 event pairs, 1031 based on Foata normal form. 4/8709 useless extension candidates. Maximal degree in co-relation 104711. Up to 8107 conditions per place. [2024-06-28 03:57:10,911 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 636 selfloop transitions, 112 changer transitions 0/752 dead transitions. [2024-06-28 03:57:10,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 752 transitions, 15134 flow [2024-06-28 03:57:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:57:10,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:57:10,913 INFO L175 Difference]: Start difference. First operand has 551 places, 726 transitions, 13271 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:57:10,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 752 transitions, 15134 flow [2024-06-28 03:57:19,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 752 transitions, 14888 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:19,142 INFO L231 Difference]: Finished difference. Result has 556 places, 729 transitions, 13447 flow [2024-06-28 03:57:19,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13043, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13447, PETRI_PLACES=556, PETRI_TRANSITIONS=729} [2024-06-28 03:57:19,142 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 515 predicate places. [2024-06-28 03:57:19,142 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 729 transitions, 13447 flow [2024-06-28 03:57:19,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:57:19,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:19,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:19,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:57:19,143 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:19,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1155462980, now seen corresponding path program 1 times [2024-06-28 03:57:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:19,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250042144] [2024-06-28 03:57:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:19,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:20,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:20,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250042144] [2024-06-28 03:57:20,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250042144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:20,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:20,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484197931] [2024-06-28 03:57:20,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:20,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 03:57:20,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 729 transitions, 13447 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 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 03:57:20,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:20,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 03:57:20,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand