./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe011_power.opt_pso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe011_power.opt_pso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:00:14,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:00:14,213 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:00:14,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:00:14,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:00:14,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:00:14,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:00:14,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:00:14,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:00:14,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:00:14,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:00:14,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:00:14,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:00:14,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:00:14,246 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:00:14,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:00:14,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:00:14,247 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:00:14,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:00:14,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:00:14,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:00:14,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:00:14,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:00:14,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:00:14,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:00:14,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:00:14,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:00:14,250 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:00:14,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:00:14,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:00:14,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:00:14,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:00:14,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:00:14,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:00:14,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:00:14,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:00:14,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:00:14,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:00:14,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:00:14,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:00:14,254 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:00:14,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:00:14,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:00:14,254 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:00:14,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:00:14,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:00:14,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:00:14,465 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:00:14,466 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:00:14,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe011_power.opt_pso.opt.yml/witness.yml [2024-06-28 04:00:14,641 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:00:14,641 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:00:14,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-06-28 04:00:15,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:00:15,968 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:00:15,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-06-28 04:00:15,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/015c06a5e/9f1a27c7ab8048768b5ee4d044430428/FLAG7b8274cc9 [2024-06-28 04:00:15,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/015c06a5e/9f1a27c7ab8048768b5ee4d044430428 [2024-06-28 04:00:15,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:00:15,991 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:00:15,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:00:15,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:00:15,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:00:15,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:00:14" (1/2) ... [2024-06-28 04:00:15,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f39a07 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:00:15, skipping insertion in model container [2024-06-28 04:00:15,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:00:14" (1/2) ... [2024-06-28 04:00:15,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6677664f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:00:15, skipping insertion in model container [2024-06-28 04:00:15,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:00:15" (2/2) ... [2024-06-28 04:00:15,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f39a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:15, skipping insertion in model container [2024-06-28 04:00:15,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:00:15" (2/2) ... [2024-06-28 04:00:15,999 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:00:16,058 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:00:16,059 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 04:00:16,060 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 04:00:16,060 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1)) [2024-06-28 04:00:16,060 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:00:16,060 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-06-28 04:00:16,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:00:16,399 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:00:16,407 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:00:16,511 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:00:16,539 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:00:16,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16 WrapperNode [2024-06-28 04:00:16,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:00:16,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:00:16,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:00:16,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:00:16,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,584 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 143 [2024-06-28 04:00:16,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:00:16,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:00:16,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:00:16,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:00:16,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,597 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,609 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 04:00:16,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:00:16,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:00:16,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:00:16,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:00:16,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (1/1) ... [2024-06-28 04:00:16,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:00:16,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:00:16,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 04:00:16,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 04:00:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:00:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:00:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:00:16,684 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:00:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:00:16,684 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:00:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:00:16,684 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:00:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:00:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:00:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:00:16,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:00:16,689 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 04:00:16,819 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:00:16,821 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:00:17,117 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:00:17,117 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:00:17,337 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:00:17,337 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:00:17,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:00:17 BoogieIcfgContainer [2024-06-28 04:00:17,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:00:17,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:00:17,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:00:17,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:00:17,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:00:14" (1/4) ... [2024-06-28 04:00:17,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f95b613 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:00:17, skipping insertion in model container [2024-06-28 04:00:17,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:00:15" (2/4) ... [2024-06-28 04:00:17,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f95b613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:00:17, skipping insertion in model container [2024-06-28 04:00:17,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:00:16" (3/4) ... [2024-06-28 04:00:17,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f95b613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:00:17, skipping insertion in model container [2024-06-28 04:00:17,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:00:17" (4/4) ... [2024-06-28 04:00:17,351 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_power.opt_pso.opt.i [2024-06-28 04:00:17,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:00:17,366 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 04:00:17,366 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:00:17,403 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:00:17,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 04:00:17,456 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 04:00:17,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:00:17,458 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 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:00:17,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 04:00:17,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 04:00:17,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:00:17,472 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;@393e9727, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:00:17,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 04:00:17,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:00:17,475 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:00:17,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:00:17,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:17,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:00:17,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:17,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash 368623954, now seen corresponding path program 1 times [2024-06-28 04:00:17,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:17,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599610743] [2024-06-28 04:00:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:17,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599610743] [2024-06-28 04:00:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599610743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:18,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:18,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:00:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806632786] [2024-06-28 04:00:18,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:18,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:00:18,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:00:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:00:18,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:00:18,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:18,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:18,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:00:18,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:18,529 INFO L124 PetriNetUnfolderBase]: 1407/2118 cut-off events. [2024-06-28 04:00:18,530 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 04:00:18,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 2118 events. 1407/2118 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9683 event pairs, 989 based on Foata normal form. 1/2076 useless extension candidates. Maximal degree in co-relation 4310. Up to 2105 conditions per place. [2024-06-28 04:00:18,543 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 32 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-28 04:00:18,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 169 flow [2024-06-28 04:00:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:00:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:00:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-06-28 04:00:18,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 04:00:18,553 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 69 transitions. [2024-06-28 04:00:18,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 169 flow [2024-06-28 04:00:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:18,557 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 04:00:18,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 04:00:18,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 04:00:18,561 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 04:00:18,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:18,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:18,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:18,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:00:18,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:18,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2060553313, now seen corresponding path program 1 times [2024-06-28 04:00:18,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:18,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219352455] [2024-06-28 04:00:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:19,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219352455] [2024-06-28 04:00:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219352455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:19,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:00:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841840543] [2024-06-28 04:00:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:00:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:00:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:00:19,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:00:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:19,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:19,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:00:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:19,327 INFO L124 PetriNetUnfolderBase]: 1415/2129 cut-off events. [2024-06-28 04:00:19,328 INFO L125 PetriNetUnfolderBase]: For 400/408 co-relation queries the response was YES. [2024-06-28 04:00:19,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 2129 events. 1415/2129 cut-off events. For 400/408 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9668 event pairs, 866 based on Foata normal form. 8/2135 useless extension candidates. Maximal degree in co-relation 4900. Up to 2072 conditions per place. [2024-06-28 04:00:19,339 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 43 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-06-28 04:00:19,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 274 flow [2024-06-28 04:00:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:00:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:00:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-28 04:00:19,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 04:00:19,343 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 95 transitions. [2024-06-28 04:00:19,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 274 flow [2024-06-28 04:00:19,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:00:19,346 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 170 flow [2024-06-28 04:00:19,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-06-28 04:00:19,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 04:00:19,347 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 170 flow [2024-06-28 04:00:19,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:19,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:19,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:19,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:00:19,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:19,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:19,352 INFO L85 PathProgramCache]: Analyzing trace with hash -547356015, now seen corresponding path program 1 times [2024-06-28 04:00:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:19,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324280724] [2024-06-28 04:00:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:19,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:19,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:19,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324280724] [2024-06-28 04:00:19,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324280724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:19,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:19,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:00:19,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444586432] [2024-06-28 04:00:19,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:19,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:00:19,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:00:19,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:00:19,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:00:19,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:19,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:19,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:00:19,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:20,138 INFO L124 PetriNetUnfolderBase]: 1431/2151 cut-off events. [2024-06-28 04:00:20,138 INFO L125 PetriNetUnfolderBase]: For 1373/1390 co-relation queries the response was YES. [2024-06-28 04:00:20,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5806 conditions, 2151 events. 1431/2151 cut-off events. For 1373/1390 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9807 event pairs, 618 based on Foata normal form. 16/2165 useless extension candidates. Maximal degree in co-relation 5791. Up to 2012 conditions per place. [2024-06-28 04:00:20,148 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 54 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-06-28 04:00:20,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 76 transitions, 412 flow [2024-06-28 04:00:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:00:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:00:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 04:00:20,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 04:00:20,160 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 170 flow. Second operand 5 states and 120 transitions. [2024-06-28 04:00:20,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 76 transitions, 412 flow [2024-06-28 04:00:20,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 408 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 04:00:20,163 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 249 flow [2024-06-28 04:00:20,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-06-28 04:00:20,165 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 04:00:20,165 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 249 flow [2024-06-28 04:00:20,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:20,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:20,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:20,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:00:20,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:20,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:20,166 INFO L85 PathProgramCache]: Analyzing trace with hash -304157824, now seen corresponding path program 1 times [2024-06-28 04:00:20,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:20,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435662344] [2024-06-28 04:00:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:20,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:21,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435662344] [2024-06-28 04:00:21,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435662344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:21,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:21,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:00:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537639095] [2024-06-28 04:00:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:21,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:00:21,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:21,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:00:21,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:00:21,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:00:21,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:21,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:21,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:00:21,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:21,537 INFO L124 PetriNetUnfolderBase]: 1482/2232 cut-off events. [2024-06-28 04:00:21,538 INFO L125 PetriNetUnfolderBase]: For 2719/2734 co-relation queries the response was YES. [2024-06-28 04:00:21,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6796 conditions, 2232 events. 1482/2232 cut-off events. For 2719/2734 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10257 event pairs, 484 based on Foata normal form. 24/2254 useless extension candidates. Maximal degree in co-relation 6778. Up to 1991 conditions per place. [2024-06-28 04:00:21,549 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 63 selfloop transitions, 19 changer transitions 0/87 dead transitions. [2024-06-28 04:00:21,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 521 flow [2024-06-28 04:00:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:00:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:00:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 04:00:21,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-28 04:00:21,550 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 249 flow. Second operand 6 states and 141 transitions. [2024-06-28 04:00:21,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 521 flow [2024-06-28 04:00:21,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 505 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 04:00:21,554 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 291 flow [2024-06-28 04:00:21,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-28 04:00:21,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-28 04:00:21,556 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 291 flow [2024-06-28 04:00:21,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:21,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:21,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:21,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:00:21,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:21,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:21,557 INFO L85 PathProgramCache]: Analyzing trace with hash -546325912, now seen corresponding path program 1 times [2024-06-28 04:00:21,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:21,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633477937] [2024-06-28 04:00:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:21,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633477937] [2024-06-28 04:00:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633477937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:22,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:22,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:00:22,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108663682] [2024-06-28 04:00:22,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:22,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:00:22,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:00:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:00:22,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:22,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:22,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:22,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:22,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:22,333 INFO L124 PetriNetUnfolderBase]: 1477/2225 cut-off events. [2024-06-28 04:00:22,334 INFO L125 PetriNetUnfolderBase]: For 3933/3948 co-relation queries the response was YES. [2024-06-28 04:00:22,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 2225 events. 1477/2225 cut-off events. For 3933/3948 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10131 event pairs, 700 based on Foata normal form. 8/2231 useless extension candidates. Maximal degree in co-relation 7255. Up to 2203 conditions per place. [2024-06-28 04:00:22,345 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 52 selfloop transitions, 8 changer transitions 0/64 dead transitions. [2024-06-28 04:00:22,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 457 flow [2024-06-28 04:00:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:00:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:00:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 04:00:22,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:00:22,347 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 291 flow. Second operand 5 states and 85 transitions. [2024-06-28 04:00:22,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 457 flow [2024-06-28 04:00:22,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 415 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:22,354 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 297 flow [2024-06-28 04:00:22,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-06-28 04:00:22,358 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 04:00:22,358 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 297 flow [2024-06-28 04:00:22,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:22,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:22,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:22,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:00:22,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:22,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:22,360 INFO L85 PathProgramCache]: Analyzing trace with hash 243767570, now seen corresponding path program 1 times [2024-06-28 04:00:22,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239651588] [2024-06-28 04:00:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:22,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239651588] [2024-06-28 04:00:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239651588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:22,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:22,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:00:22,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709112359] [2024-06-28 04:00:22,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:22,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:00:22,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:00:22,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:00:22,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:22,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:22,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:22,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:22,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:23,250 INFO L124 PetriNetUnfolderBase]: 1704/2550 cut-off events. [2024-06-28 04:00:23,250 INFO L125 PetriNetUnfolderBase]: For 5457/5457 co-relation queries the response was YES. [2024-06-28 04:00:23,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8512 conditions, 2550 events. 1704/2550 cut-off events. For 5457/5457 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11720 event pairs, 828 based on Foata normal form. 2/2550 useless extension candidates. Maximal degree in co-relation 8488. Up to 2520 conditions per place. [2024-06-28 04:00:23,266 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 63 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-06-28 04:00:23,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 536 flow [2024-06-28 04:00:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:00:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:00:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-28 04:00:23,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:00:23,267 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 297 flow. Second operand 6 states and 95 transitions. [2024-06-28 04:00:23,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 536 flow [2024-06-28 04:00:23,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 503 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:23,272 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 369 flow [2024-06-28 04:00:23,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2024-06-28 04:00:23,273 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-28 04:00:23,273 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 369 flow [2024-06-28 04:00:23,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:23,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:23,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:23,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:00:23,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:23,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1038860089, now seen corresponding path program 1 times [2024-06-28 04:00:23,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:23,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897334360] [2024-06-28 04:00:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:23,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:23,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897334360] [2024-06-28 04:00:23,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897334360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:23,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:23,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:00:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134534542] [2024-06-28 04:00:23,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:23,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:00:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:00:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:00:23,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:23,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 369 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:23,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:23,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:23,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:24,203 INFO L124 PetriNetUnfolderBase]: 1650/2481 cut-off events. [2024-06-28 04:00:24,203 INFO L125 PetriNetUnfolderBase]: For 7642/7691 co-relation queries the response was YES. [2024-06-28 04:00:24,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9083 conditions, 2481 events. 1650/2481 cut-off events. For 7642/7691 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11426 event pairs, 720 based on Foata normal form. 16/2487 useless extension candidates. Maximal degree in co-relation 9056. Up to 2412 conditions per place. [2024-06-28 04:00:24,218 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 68 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 04:00:24,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 93 transitions, 669 flow [2024-06-28 04:00:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:00:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:00:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 04:00:24,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-28 04:00:24,220 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 369 flow. Second operand 6 states and 109 transitions. [2024-06-28 04:00:24,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 93 transitions, 669 flow [2024-06-28 04:00:24,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 93 transitions, 661 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 04:00:24,225 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 511 flow [2024-06-28 04:00:24,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=511, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2024-06-28 04:00:24,226 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-28 04:00:24,226 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 511 flow [2024-06-28 04:00:24,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:24,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:24,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:24,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:00:24,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:24,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:24,227 INFO L85 PathProgramCache]: Analyzing trace with hash 130490291, now seen corresponding path program 2 times [2024-06-28 04:00:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:24,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020649179] [2024-06-28 04:00:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:24,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020649179] [2024-06-28 04:00:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020649179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:24,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:24,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:00:24,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277563414] [2024-06-28 04:00:24,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:24,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:00:24,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:00:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:00:24,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:24,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:24,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:24,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:24,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:25,124 INFO L124 PetriNetUnfolderBase]: 1704/2560 cut-off events. [2024-06-28 04:00:25,125 INFO L125 PetriNetUnfolderBase]: For 10266/10336 co-relation queries the response was YES. [2024-06-28 04:00:25,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10560 conditions, 2560 events. 1704/2560 cut-off events. For 10266/10336 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11830 event pairs, 722 based on Foata normal form. 17/2566 useless extension candidates. Maximal degree in co-relation 10528. Up to 2428 conditions per place. [2024-06-28 04:00:25,138 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 68 selfloop transitions, 25 changer transitions 0/100 dead transitions. [2024-06-28 04:00:25,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 843 flow [2024-06-28 04:00:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:00:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:00:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 04:00:25,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-28 04:00:25,139 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 511 flow. Second operand 6 states and 109 transitions. [2024-06-28 04:00:25,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 843 flow [2024-06-28 04:00:25,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 100 transitions, 811 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:25,146 INFO L231 Difference]: Finished difference. Result has 72 places, 81 transitions, 630 flow [2024-06-28 04:00:25,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=72, PETRI_TRANSITIONS=81} [2024-06-28 04:00:25,146 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-28 04:00:25,147 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 81 transitions, 630 flow [2024-06-28 04:00:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:25,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:25,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:25,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:00:25,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:25,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1033138233, now seen corresponding path program 1 times [2024-06-28 04:00:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710613056] [2024-06-28 04:00:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:25,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:25,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710613056] [2024-06-28 04:00:25,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710613056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:25,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:25,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143799548] [2024-06-28 04:00:25,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:25,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:25,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:25,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 81 transitions, 630 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:25,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:25,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:25,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:26,230 INFO L124 PetriNetUnfolderBase]: 1751/2617 cut-off events. [2024-06-28 04:00:26,230 INFO L125 PetriNetUnfolderBase]: For 12753/12753 co-relation queries the response was YES. [2024-06-28 04:00:26,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11265 conditions, 2617 events. 1751/2617 cut-off events. For 12753/12753 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11966 event pairs, 792 based on Foata normal form. 2/2617 useless extension candidates. Maximal degree in co-relation 11230. Up to 2578 conditions per place. [2024-06-28 04:00:26,247 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 86 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-28 04:00:26,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 896 flow [2024-06-28 04:00:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 04:00:26,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-06-28 04:00:26,248 INFO L175 Difference]: Start difference. First operand has 72 places, 81 transitions, 630 flow. Second operand 7 states and 109 transitions. [2024-06-28 04:00:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 896 flow [2024-06-28 04:00:26,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 851 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:26,272 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 645 flow [2024-06-28 04:00:26,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=645, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-28 04:00:26,273 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-28 04:00:26,273 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 645 flow [2024-06-28 04:00:26,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:26,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:26,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:26,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:00:26,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:26,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2053725543, now seen corresponding path program 1 times [2024-06-28 04:00:26,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:26,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997418841] [2024-06-28 04:00:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:26,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997418841] [2024-06-28 04:00:26,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997418841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:26,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:26,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246472568] [2024-06-28 04:00:26,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:26,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:26,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:26,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:26,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 645 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:26,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:26,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:26,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:27,361 INFO L124 PetriNetUnfolderBase]: 1767/2664 cut-off events. [2024-06-28 04:00:27,361 INFO L125 PetriNetUnfolderBase]: For 17551/17617 co-relation queries the response was YES. [2024-06-28 04:00:27,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12219 conditions, 2664 events. 1767/2664 cut-off events. For 17551/17617 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12512 event pairs, 590 based on Foata normal form. 31/2639 useless extension candidates. Maximal degree in co-relation 12182. Up to 2389 conditions per place. [2024-06-28 04:00:27,376 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 85 selfloop transitions, 38 changer transitions 0/131 dead transitions. [2024-06-28 04:00:27,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 1141 flow [2024-06-28 04:00:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:00:27,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:00:27,378 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 645 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:00:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 1141 flow [2024-06-28 04:00:27,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 131 transitions, 1103 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:27,393 INFO L231 Difference]: Finished difference. Result has 84 places, 102 transitions, 899 flow [2024-06-28 04:00:27,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=899, PETRI_PLACES=84, PETRI_TRANSITIONS=102} [2024-06-28 04:00:27,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-28 04:00:27,396 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 102 transitions, 899 flow [2024-06-28 04:00:27,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:27,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:27,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:27,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:00:27,396 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:27,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash -999834693, now seen corresponding path program 2 times [2024-06-28 04:00:27,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443211266] [2024-06-28 04:00:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:27,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:27,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443211266] [2024-06-28 04:00:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443211266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:27,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:27,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:27,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126438867] [2024-06-28 04:00:27,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:27,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:27,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:27,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:27,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:27,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:27,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 102 transitions, 899 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:27,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:27,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:27,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:28,448 INFO L124 PetriNetUnfolderBase]: 1822/2746 cut-off events. [2024-06-28 04:00:28,449 INFO L125 PetriNetUnfolderBase]: For 22466/22597 co-relation queries the response was YES. [2024-06-28 04:00:28,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13955 conditions, 2746 events. 1822/2746 cut-off events. For 22466/22597 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12985 event pairs, 562 based on Foata normal form. 49/2740 useless extension candidates. Maximal degree in co-relation 13913. Up to 2461 conditions per place. [2024-06-28 04:00:28,468 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 90 selfloop transitions, 54 changer transitions 0/152 dead transitions. [2024-06-28 04:00:28,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 152 transitions, 1454 flow [2024-06-28 04:00:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:00:28,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 04:00:28,470 INFO L175 Difference]: Start difference. First operand has 84 places, 102 transitions, 899 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:00:28,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 152 transitions, 1454 flow [2024-06-28 04:00:28,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 152 transitions, 1367 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:28,489 INFO L231 Difference]: Finished difference. Result has 92 places, 119 transitions, 1114 flow [2024-06-28 04:00:28,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1114, PETRI_PLACES=92, PETRI_TRANSITIONS=119} [2024-06-28 04:00:28,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-06-28 04:00:28,490 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 119 transitions, 1114 flow [2024-06-28 04:00:28,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:28,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:28,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:28,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:00:28,490 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:28,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:28,491 INFO L85 PathProgramCache]: Analyzing trace with hash 467126149, now seen corresponding path program 3 times [2024-06-28 04:00:28,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:28,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911600910] [2024-06-28 04:00:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:28,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:28,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:28,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911600910] [2024-06-28 04:00:28,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911600910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:28,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:28,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:28,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70407352] [2024-06-28 04:00:28,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:28,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:28,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:28,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:29,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:29,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 119 transitions, 1114 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:29,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:29,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:29,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:29,578 INFO L124 PetriNetUnfolderBase]: 1900/2864 cut-off events. [2024-06-28 04:00:29,579 INFO L125 PetriNetUnfolderBase]: For 28660/28840 co-relation queries the response was YES. [2024-06-28 04:00:29,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15570 conditions, 2864 events. 1900/2864 cut-off events. For 28660/28840 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13560 event pairs, 522 based on Foata normal form. 61/2867 useless extension candidates. Maximal degree in co-relation 15524. Up to 2538 conditions per place. [2024-06-28 04:00:29,598 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 102 selfloop transitions, 65 changer transitions 0/175 dead transitions. [2024-06-28 04:00:29,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 175 transitions, 1867 flow [2024-06-28 04:00:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 04:00:29,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 04:00:29,599 INFO L175 Difference]: Start difference. First operand has 92 places, 119 transitions, 1114 flow. Second operand 8 states and 148 transitions. [2024-06-28 04:00:29,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 175 transitions, 1867 flow [2024-06-28 04:00:29,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 175 transitions, 1760 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:29,622 INFO L231 Difference]: Finished difference. Result has 100 places, 145 transitions, 1525 flow [2024-06-28 04:00:29,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1525, PETRI_PLACES=100, PETRI_TRANSITIONS=145} [2024-06-28 04:00:29,622 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-28 04:00:29,623 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 145 transitions, 1525 flow [2024-06-28 04:00:29,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:29,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:29,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:29,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:00:29,623 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:29,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 464620529, now seen corresponding path program 1 times [2024-06-28 04:00:29,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:29,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423154457] [2024-06-28 04:00:29,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:29,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:30,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:30,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423154457] [2024-06-28 04:00:30,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423154457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:30,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:30,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:30,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303776326] [2024-06-28 04:00:30,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:30,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:30,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:30,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:30,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:30,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:30,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 145 transitions, 1525 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:30,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:30,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:30,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:30,683 INFO L124 PetriNetUnfolderBase]: 2104/3142 cut-off events. [2024-06-28 04:00:30,683 INFO L125 PetriNetUnfolderBase]: For 29598/29598 co-relation queries the response was YES. [2024-06-28 04:00:30,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17424 conditions, 3142 events. 2104/3142 cut-off events. For 29598/29598 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14717 event pairs, 870 based on Foata normal form. 2/3142 useless extension candidates. Maximal degree in co-relation 17374. Up to 3069 conditions per place. [2024-06-28 04:00:30,705 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 159 selfloop transitions, 23 changer transitions 0/185 dead transitions. [2024-06-28 04:00:30,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 185 transitions, 2152 flow [2024-06-28 04:00:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:00:30,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 04:00:30,707 INFO L175 Difference]: Start difference. First operand has 100 places, 145 transitions, 1525 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:00:30,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 185 transitions, 2152 flow [2024-06-28 04:00:30,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 185 transitions, 2064 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:30,738 INFO L231 Difference]: Finished difference. Result has 108 places, 161 transitions, 1720 flow [2024-06-28 04:00:30,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1720, PETRI_PLACES=108, PETRI_TRANSITIONS=161} [2024-06-28 04:00:30,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-06-28 04:00:30,739 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 161 transitions, 1720 flow [2024-06-28 04:00:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:30,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:30,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:30,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:00:30,740 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:30,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash 504782779, now seen corresponding path program 4 times [2024-06-28 04:00:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:30,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467993703] [2024-06-28 04:00:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:30,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:31,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467993703] [2024-06-28 04:00:31,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467993703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:31,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:31,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:31,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494149295] [2024-06-28 04:00:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:31,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:31,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:31,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:31,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:31,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:31,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 161 transitions, 1720 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:31,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:31,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:31,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:31,845 INFO L124 PetriNetUnfolderBase]: 1996/3013 cut-off events. [2024-06-28 04:00:31,845 INFO L125 PetriNetUnfolderBase]: For 38571/38707 co-relation queries the response was YES. [2024-06-28 04:00:31,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17764 conditions, 3013 events. 1996/3013 cut-off events. For 38571/38707 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14375 event pairs, 515 based on Foata normal form. 68/3017 useless extension candidates. Maximal degree in co-relation 17710. Up to 2572 conditions per place. [2024-06-28 04:00:31,870 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 109 selfloop transitions, 82 changer transitions 0/203 dead transitions. [2024-06-28 04:00:31,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 203 transitions, 2428 flow [2024-06-28 04:00:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 04:00:31,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 04:00:31,871 INFO L175 Difference]: Start difference. First operand has 108 places, 161 transitions, 1720 flow. Second operand 8 states and 151 transitions. [2024-06-28 04:00:31,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 203 transitions, 2428 flow [2024-06-28 04:00:31,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 203 transitions, 2394 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 04:00:31,909 INFO L231 Difference]: Finished difference. Result has 116 places, 170 transitions, 2019 flow [2024-06-28 04:00:31,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2019, PETRI_PLACES=116, PETRI_TRANSITIONS=170} [2024-06-28 04:00:31,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-28 04:00:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 170 transitions, 2019 flow [2024-06-28 04:00:31,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:31,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:31,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:00:31,910 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:31,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -356135449, now seen corresponding path program 5 times [2024-06-28 04:00:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589783208] [2024-06-28 04:00:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:32,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:32,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589783208] [2024-06-28 04:00:32,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589783208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:32,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:32,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109089549] [2024-06-28 04:00:32,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:32,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:32,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:32,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 170 transitions, 2019 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:32,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:32,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:32,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:33,080 INFO L124 PetriNetUnfolderBase]: 2095/3154 cut-off events. [2024-06-28 04:00:33,080 INFO L125 PetriNetUnfolderBase]: For 47657/47818 co-relation queries the response was YES. [2024-06-28 04:00:33,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19851 conditions, 3154 events. 2095/3154 cut-off events. For 47657/47818 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15104 event pairs, 518 based on Foata normal form. 82/3174 useless extension candidates. Maximal degree in co-relation 19793. Up to 2572 conditions per place. [2024-06-28 04:00:33,103 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 105 selfloop transitions, 93 changer transitions 0/210 dead transitions. [2024-06-28 04:00:33,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 210 transitions, 2775 flow [2024-06-28 04:00:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 04:00:33,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2024-06-28 04:00:33,105 INFO L175 Difference]: Start difference. First operand has 116 places, 170 transitions, 2019 flow. Second operand 7 states and 137 transitions. [2024-06-28 04:00:33,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 210 transitions, 2775 flow [2024-06-28 04:00:33,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 210 transitions, 2649 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:33,151 INFO L231 Difference]: Finished difference. Result has 120 places, 179 transitions, 2294 flow [2024-06-28 04:00:33,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2294, PETRI_PLACES=120, PETRI_TRANSITIONS=179} [2024-06-28 04:00:33,153 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-28 04:00:33,153 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 179 transitions, 2294 flow [2024-06-28 04:00:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:33,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:33,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:33,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:00:33,153 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:33,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2139890029, now seen corresponding path program 2 times [2024-06-28 04:00:33,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:33,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206177576] [2024-06-28 04:00:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:33,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206177576] [2024-06-28 04:00:33,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206177576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:33,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:33,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992661175] [2024-06-28 04:00:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:33,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:33,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:33,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 179 transitions, 2294 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:33,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:33,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:33,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:34,334 INFO L124 PetriNetUnfolderBase]: 2306/3429 cut-off events. [2024-06-28 04:00:34,335 INFO L125 PetriNetUnfolderBase]: For 49890/49893 co-relation queries the response was YES. [2024-06-28 04:00:34,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22353 conditions, 3429 events. 2306/3429 cut-off events. For 49890/49893 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16237 event pairs, 887 based on Foata normal form. 4/3429 useless extension candidates. Maximal degree in co-relation 22292. Up to 3349 conditions per place. [2024-06-28 04:00:34,362 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 178 selfloop transitions, 29 changer transitions 0/210 dead transitions. [2024-06-28 04:00:34,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 210 transitions, 2887 flow [2024-06-28 04:00:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 04:00:34,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:00:34,364 INFO L175 Difference]: Start difference. First operand has 120 places, 179 transitions, 2294 flow. Second operand 8 states and 120 transitions. [2024-06-28 04:00:34,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 210 transitions, 2887 flow [2024-06-28 04:00:34,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 210 transitions, 2745 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:34,434 INFO L231 Difference]: Finished difference. Result has 125 places, 192 transitions, 2371 flow [2024-06-28 04:00:34,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2371, PETRI_PLACES=125, PETRI_TRANSITIONS=192} [2024-06-28 04:00:34,435 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-28 04:00:34,435 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 192 transitions, 2371 flow [2024-06-28 04:00:34,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:34,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:34,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:34,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:00:34,435 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:34,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:34,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1962521359, now seen corresponding path program 3 times [2024-06-28 04:00:34,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:34,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701454229] [2024-06-28 04:00:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:34,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:34,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701454229] [2024-06-28 04:00:34,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701454229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:34,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:34,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328424783] [2024-06-28 04:00:34,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:34,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:34,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:35,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:35,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 192 transitions, 2371 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:35,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:35,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:35,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:35,577 INFO L124 PetriNetUnfolderBase]: 2317/3448 cut-off events. [2024-06-28 04:00:35,577 INFO L125 PetriNetUnfolderBase]: For 47365/47371 co-relation queries the response was YES. [2024-06-28 04:00:35,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22294 conditions, 3448 events. 2317/3448 cut-off events. For 47365/47371 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16364 event pairs, 889 based on Foata normal form. 6/3448 useless extension candidates. Maximal degree in co-relation 22231. Up to 3300 conditions per place. [2024-06-28 04:00:35,603 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 172 selfloop transitions, 46 changer transitions 0/221 dead transitions. [2024-06-28 04:00:35,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 221 transitions, 3017 flow [2024-06-28 04:00:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 04:00:35,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 04:00:35,605 INFO L175 Difference]: Start difference. First operand has 125 places, 192 transitions, 2371 flow. Second operand 7 states and 114 transitions. [2024-06-28 04:00:35,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 221 transitions, 3017 flow [2024-06-28 04:00:35,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 221 transitions, 2991 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 04:00:35,649 INFO L231 Difference]: Finished difference. Result has 132 places, 201 transitions, 2557 flow [2024-06-28 04:00:35,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2557, PETRI_PLACES=132, PETRI_TRANSITIONS=201} [2024-06-28 04:00:35,650 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-28 04:00:35,650 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 201 transitions, 2557 flow [2024-06-28 04:00:35,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:35,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:35,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:35,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:00:35,651 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:35,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1962758509, now seen corresponding path program 4 times [2024-06-28 04:00:35,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:35,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437915767] [2024-06-28 04:00:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:36,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437915767] [2024-06-28 04:00:36,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437915767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:36,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:36,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:36,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913643981] [2024-06-28 04:00:36,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:36,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:36,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:36,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:36,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:36,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 201 transitions, 2557 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:36,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:36,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:36,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:36,777 INFO L124 PetriNetUnfolderBase]: 2312/3441 cut-off events. [2024-06-28 04:00:36,777 INFO L125 PetriNetUnfolderBase]: For 52459/52465 co-relation queries the response was YES. [2024-06-28 04:00:36,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23014 conditions, 3441 events. 2312/3441 cut-off events. For 52459/52465 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16342 event pairs, 889 based on Foata normal form. 6/3441 useless extension candidates. Maximal degree in co-relation 22947. Up to 3295 conditions per place. [2024-06-28 04:00:36,803 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 173 selfloop transitions, 43 changer transitions 0/219 dead transitions. [2024-06-28 04:00:36,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 219 transitions, 3051 flow [2024-06-28 04:00:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:00:36,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 04:00:36,805 INFO L175 Difference]: Start difference. First operand has 132 places, 201 transitions, 2557 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:00:36,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 219 transitions, 3051 flow [2024-06-28 04:00:36,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 219 transitions, 2992 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:36,871 INFO L231 Difference]: Finished difference. Result has 137 places, 201 transitions, 2592 flow [2024-06-28 04:00:36,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2592, PETRI_PLACES=137, PETRI_TRANSITIONS=201} [2024-06-28 04:00:36,871 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-28 04:00:36,872 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 201 transitions, 2592 flow [2024-06-28 04:00:36,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:36,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:36,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:36,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:00:36,872 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:36,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1962758695, now seen corresponding path program 6 times [2024-06-28 04:00:36,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:36,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438836919] [2024-06-28 04:00:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:36,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:37,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:37,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438836919] [2024-06-28 04:00:37,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438836919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:37,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:37,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:00:37,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380251531] [2024-06-28 04:00:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:37,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:00:37,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:37,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:00:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:00:37,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:37,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 201 transitions, 2592 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:37,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:37,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:37,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:38,102 INFO L124 PetriNetUnfolderBase]: 2162/3252 cut-off events. [2024-06-28 04:00:38,102 INFO L125 PetriNetUnfolderBase]: For 59610/59747 co-relation queries the response was YES. [2024-06-28 04:00:38,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22312 conditions, 3252 events. 2162/3252 cut-off events. For 59610/59747 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15590 event pairs, 582 based on Foata normal form. 84/3266 useless extension candidates. Maximal degree in co-relation 22243. Up to 2428 conditions per place. [2024-06-28 04:00:38,126 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 136 selfloop transitions, 86 changer transitions 0/242 dead transitions. [2024-06-28 04:00:38,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 242 transitions, 3482 flow [2024-06-28 04:00:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 04:00:38,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-28 04:00:38,128 INFO L175 Difference]: Start difference. First operand has 137 places, 201 transitions, 2592 flow. Second operand 7 states and 134 transitions. [2024-06-28 04:00:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 242 transitions, 3482 flow [2024-06-28 04:00:38,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 242 transitions, 3336 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:00:38,186 INFO L231 Difference]: Finished difference. Result has 139 places, 212 transitions, 2885 flow [2024-06-28 04:00:38,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2885, PETRI_PLACES=139, PETRI_TRANSITIONS=212} [2024-06-28 04:00:38,187 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 98 predicate places. [2024-06-28 04:00:38,187 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 212 transitions, 2885 flow [2024-06-28 04:00:38,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:38,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:38,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:38,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:00:38,187 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:38,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1962512431, now seen corresponding path program 1 times [2024-06-28 04:00:38,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656049480] [2024-06-28 04:00:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:39,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656049480] [2024-06-28 04:00:39,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656049480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:39,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:39,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017669573] [2024-06-28 04:00:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:39,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:39,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:39,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:39,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 212 transitions, 2885 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:39,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:39,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:39,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:39,778 INFO L124 PetriNetUnfolderBase]: 2324/3460 cut-off events. [2024-06-28 04:00:39,778 INFO L125 PetriNetUnfolderBase]: For 63306/63306 co-relation queries the response was YES. [2024-06-28 04:00:39,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24493 conditions, 3460 events. 2324/3460 cut-off events. For 63306/63306 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16432 event pairs, 957 based on Foata normal form. 4/3462 useless extension candidates. Maximal degree in co-relation 24423. Up to 3380 conditions per place. [2024-06-28 04:00:39,808 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 217 selfloop transitions, 17 changer transitions 0/237 dead transitions. [2024-06-28 04:00:39,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 237 transitions, 3453 flow [2024-06-28 04:00:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 04:00:39,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 04:00:39,809 INFO L175 Difference]: Start difference. First operand has 139 places, 212 transitions, 2885 flow. Second operand 8 states and 123 transitions. [2024-06-28 04:00:39,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 237 transitions, 3453 flow [2024-06-28 04:00:39,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 237 transitions, 3339 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:39,885 INFO L231 Difference]: Finished difference. Result has 145 places, 214 transitions, 2838 flow [2024-06-28 04:00:39,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2838, PETRI_PLACES=145, PETRI_TRANSITIONS=214} [2024-06-28 04:00:39,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-28 04:00:39,886 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 214 transitions, 2838 flow [2024-06-28 04:00:39,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:39,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:39,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:39,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:00:39,887 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:39,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1234383844, now seen corresponding path program 1 times [2024-06-28 04:00:39,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:39,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156342385] [2024-06-28 04:00:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156342385] [2024-06-28 04:00:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156342385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:40,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:40,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:40,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018848454] [2024-06-28 04:00:40,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:40,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:40,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:40,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 214 transitions, 2838 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:40,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:40,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:40,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:41,284 INFO L124 PetriNetUnfolderBase]: 2167/3263 cut-off events. [2024-06-28 04:00:41,292 INFO L125 PetriNetUnfolderBase]: For 69565/69771 co-relation queries the response was YES. [2024-06-28 04:00:41,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23641 conditions, 3263 events. 2167/3263 cut-off events. For 69565/69771 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15617 event pairs, 716 based on Foata normal form. 76/3286 useless extension candidates. Maximal degree in co-relation 23569. Up to 2858 conditions per place. [2024-06-28 04:00:41,336 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 151 selfloop transitions, 87 changer transitions 0/259 dead transitions. [2024-06-28 04:00:41,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 259 transitions, 3683 flow [2024-06-28 04:00:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 04:00:41,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 04:00:41,343 INFO L175 Difference]: Start difference. First operand has 145 places, 214 transitions, 2838 flow. Second operand 8 states and 152 transitions. [2024-06-28 04:00:41,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 259 transitions, 3683 flow [2024-06-28 04:00:41,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 259 transitions, 3636 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:41,418 INFO L231 Difference]: Finished difference. Result has 148 places, 228 transitions, 3241 flow [2024-06-28 04:00:41,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3241, PETRI_PLACES=148, PETRI_TRANSITIONS=228} [2024-06-28 04:00:41,418 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-06-28 04:00:41,418 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 228 transitions, 3241 flow [2024-06-28 04:00:41,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:41,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:41,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:41,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:00:41,419 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:41,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:41,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1790115079, now seen corresponding path program 1 times [2024-06-28 04:00:41,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:41,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338819058] [2024-06-28 04:00:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:41,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:41,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:41,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338819058] [2024-06-28 04:00:41,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338819058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:41,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:41,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:41,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417466843] [2024-06-28 04:00:41,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:41,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:42,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:42,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 228 transitions, 3241 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:42,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:42,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:42,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:42,631 INFO L124 PetriNetUnfolderBase]: 2398/3556 cut-off events. [2024-06-28 04:00:42,631 INFO L125 PetriNetUnfolderBase]: For 72612/72614 co-relation queries the response was YES. [2024-06-28 04:00:42,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26222 conditions, 3556 events. 2398/3556 cut-off events. For 72612/72614 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16710 event pairs, 650 based on Foata normal form. 6/3560 useless extension candidates. Maximal degree in co-relation 26148. Up to 3347 conditions per place. [2024-06-28 04:00:42,662 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 236 selfloop transitions, 56 changer transitions 0/295 dead transitions. [2024-06-28 04:00:42,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 295 transitions, 4514 flow [2024-06-28 04:00:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:00:42,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:00:42,673 INFO L175 Difference]: Start difference. First operand has 148 places, 228 transitions, 3241 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:00:42,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 295 transitions, 4514 flow [2024-06-28 04:00:42,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 295 transitions, 4393 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:42,768 INFO L231 Difference]: Finished difference. Result has 158 places, 263 transitions, 3933 flow [2024-06-28 04:00:42,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3137, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3933, PETRI_PLACES=158, PETRI_TRANSITIONS=263} [2024-06-28 04:00:42,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-28 04:00:42,768 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 263 transitions, 3933 flow [2024-06-28 04:00:42,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:42,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:42,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:42,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:00:42,769 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:42,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1611377862, now seen corresponding path program 2 times [2024-06-28 04:00:42,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:42,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750075197] [2024-06-28 04:00:42,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:42,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:43,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750075197] [2024-06-28 04:00:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750075197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:43,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796583908] [2024-06-28 04:00:43,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:43,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:43,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:43,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 263 transitions, 3933 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:43,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:43,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:43,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:44,360 INFO L124 PetriNetUnfolderBase]: 2276/3412 cut-off events. [2024-06-28 04:00:44,360 INFO L125 PetriNetUnfolderBase]: For 84909/85026 co-relation queries the response was YES. [2024-06-28 04:00:44,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26595 conditions, 3412 events. 2276/3412 cut-off events. For 84909/85026 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16492 event pairs, 504 based on Foata normal form. 23/3347 useless extension candidates. Maximal degree in co-relation 26516. Up to 2953 conditions per place. [2024-06-28 04:00:44,389 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 167 selfloop transitions, 107 changer transitions 0/300 dead transitions. [2024-06-28 04:00:44,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 300 transitions, 4788 flow [2024-06-28 04:00:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:00:44,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2024-06-28 04:00:44,393 INFO L175 Difference]: Start difference. First operand has 158 places, 263 transitions, 3933 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:00:44,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 300 transitions, 4788 flow [2024-06-28 04:00:44,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 300 transitions, 4719 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:44,507 INFO L231 Difference]: Finished difference. Result has 164 places, 271 transitions, 4262 flow [2024-06-28 04:00:44,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4262, PETRI_PLACES=164, PETRI_TRANSITIONS=271} [2024-06-28 04:00:44,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-28 04:00:44,508 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 271 transitions, 4262 flow [2024-06-28 04:00:44,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:44,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:44,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:44,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:00:44,509 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:44,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1596010389, now seen corresponding path program 2 times [2024-06-28 04:00:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864999226] [2024-06-28 04:00:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:45,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:45,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864999226] [2024-06-28 04:00:45,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864999226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:45,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:45,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:45,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228724523] [2024-06-28 04:00:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:45,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:45,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:45,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:45,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 271 transitions, 4262 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:45,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:45,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:45,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:45,729 INFO L124 PetriNetUnfolderBase]: 2450/3631 cut-off events. [2024-06-28 04:00:45,729 INFO L125 PetriNetUnfolderBase]: For 86024/86030 co-relation queries the response was YES. [2024-06-28 04:00:45,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27911 conditions, 3631 events. 2450/3631 cut-off events. For 86024/86030 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17084 event pairs, 620 based on Foata normal form. 10/3639 useless extension candidates. Maximal degree in co-relation 27830. Up to 3413 conditions per place. [2024-06-28 04:00:45,763 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 251 selfloop transitions, 62 changer transitions 0/316 dead transitions. [2024-06-28 04:00:45,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 316 transitions, 5169 flow [2024-06-28 04:00:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:00:45,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 04:00:45,766 INFO L175 Difference]: Start difference. First operand has 164 places, 271 transitions, 4262 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:00:45,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 316 transitions, 5169 flow [2024-06-28 04:00:45,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 316 transitions, 5034 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:45,900 INFO L231 Difference]: Finished difference. Result has 170 places, 286 transitions, 4462 flow [2024-06-28 04:00:45,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4131, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4462, PETRI_PLACES=170, PETRI_TRANSITIONS=286} [2024-06-28 04:00:45,901 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-28 04:00:45,901 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 286 transitions, 4462 flow [2024-06-28 04:00:45,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:45,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:45,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:45,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:00:45,902 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:45,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:45,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1599729459, now seen corresponding path program 3 times [2024-06-28 04:00:45,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:45,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916842963] [2024-06-28 04:00:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:45,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:46,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916842963] [2024-06-28 04:00:46,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916842963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:46,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780936772] [2024-06-28 04:00:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:46,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:46,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:46,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 286 transitions, 4462 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:46,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:46,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:46,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:47,314 INFO L124 PetriNetUnfolderBase]: 2600/3848 cut-off events. [2024-06-28 04:00:47,315 INFO L125 PetriNetUnfolderBase]: For 97623/97625 co-relation queries the response was YES. [2024-06-28 04:00:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30068 conditions, 3848 events. 2600/3848 cut-off events. For 97623/97625 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18226 event pairs, 575 based on Foata normal form. 6/3852 useless extension candidates. Maximal degree in co-relation 29985. Up to 3309 conditions per place. [2024-06-28 04:00:47,346 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 257 selfloop transitions, 81 changer transitions 0/341 dead transitions. [2024-06-28 04:00:47,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 341 transitions, 5762 flow [2024-06-28 04:00:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:00:47,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 04:00:47,348 INFO L175 Difference]: Start difference. First operand has 170 places, 286 transitions, 4462 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:00:47,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 341 transitions, 5762 flow [2024-06-28 04:00:47,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 341 transitions, 5723 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:47,480 INFO L231 Difference]: Finished difference. Result has 179 places, 302 transitions, 4896 flow [2024-06-28 04:00:47,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4896, PETRI_PLACES=179, PETRI_TRANSITIONS=302} [2024-06-28 04:00:47,481 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-28 04:00:47,481 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 302 transitions, 4896 flow [2024-06-28 04:00:47,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:47,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:47,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:47,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:00:47,482 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:47,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:47,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1599735039, now seen corresponding path program 4 times [2024-06-28 04:00:47,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:47,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688917480] [2024-06-28 04:00:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:47,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:48,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688917480] [2024-06-28 04:00:48,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688917480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:48,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:48,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:48,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615684905] [2024-06-28 04:00:48,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:48,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:48,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:48,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:48,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:48,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:48,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 302 transitions, 4896 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:48,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:48,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:48,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:48,839 INFO L124 PetriNetUnfolderBase]: 2586/3830 cut-off events. [2024-06-28 04:00:48,839 INFO L125 PetriNetUnfolderBase]: For 107297/107299 co-relation queries the response was YES. [2024-06-28 04:00:48,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31222 conditions, 3830 events. 2586/3830 cut-off events. For 107297/107299 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18136 event pairs, 558 based on Foata normal form. 10/3838 useless extension candidates. Maximal degree in co-relation 31135. Up to 3305 conditions per place. [2024-06-28 04:00:48,871 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 248 selfloop transitions, 90 changer transitions 0/341 dead transitions. [2024-06-28 04:00:48,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 341 transitions, 5911 flow [2024-06-28 04:00:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:00:48,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 04:00:48,873 INFO L175 Difference]: Start difference. First operand has 179 places, 302 transitions, 4896 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:00:48,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 341 transitions, 5911 flow [2024-06-28 04:00:49,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 341 transitions, 5765 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:49,031 INFO L231 Difference]: Finished difference. Result has 185 places, 307 transitions, 5079 flow [2024-06-28 04:00:49,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4760, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5079, PETRI_PLACES=185, PETRI_TRANSITIONS=307} [2024-06-28 04:00:49,031 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-28 04:00:49,031 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 307 transitions, 5079 flow [2024-06-28 04:00:49,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:49,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:49,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:49,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:00:49,032 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:49,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1599735256, now seen corresponding path program 1 times [2024-06-28 04:00:49,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:49,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653614200] [2024-06-28 04:00:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:49,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:49,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653614200] [2024-06-28 04:00:49,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653614200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:49,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:49,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:49,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154821542] [2024-06-28 04:00:49,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:49,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:49,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:49,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:49,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:49,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 307 transitions, 5079 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:49,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:49,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:49,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:50,564 INFO L124 PetriNetUnfolderBase]: 2575/3819 cut-off events. [2024-06-28 04:00:50,565 INFO L125 PetriNetUnfolderBase]: For 109807/109811 co-relation queries the response was YES. [2024-06-28 04:00:50,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31378 conditions, 3819 events. 2575/3819 cut-off events. For 109807/109811 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18235 event pairs, 843 based on Foata normal form. 6/3823 useless extension candidates. Maximal degree in co-relation 31288. Up to 3726 conditions per place. [2024-06-28 04:00:50,598 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 301 selfloop transitions, 33 changer transitions 0/337 dead transitions. [2024-06-28 04:00:50,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 337 transitions, 5877 flow [2024-06-28 04:00:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 04:00:50,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 04:00:50,599 INFO L175 Difference]: Start difference. First operand has 185 places, 307 transitions, 5079 flow. Second operand 9 states and 141 transitions. [2024-06-28 04:00:50,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 337 transitions, 5877 flow [2024-06-28 04:00:50,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 337 transitions, 5753 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:50,767 INFO L231 Difference]: Finished difference. Result has 189 places, 309 transitions, 5060 flow [2024-06-28 04:00:50,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4957, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5060, PETRI_PLACES=189, PETRI_TRANSITIONS=309} [2024-06-28 04:00:50,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-28 04:00:50,768 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 309 transitions, 5060 flow [2024-06-28 04:00:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:50,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:50,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:00:50,769 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:50,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash 647715542, now seen corresponding path program 3 times [2024-06-28 04:00:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:50,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559968315] [2024-06-28 04:00:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:51,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:51,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559968315] [2024-06-28 04:00:51,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559968315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:51,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:51,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:51,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842312371] [2024-06-28 04:00:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:51,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:51,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:51,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:00:51,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 309 transitions, 5060 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:51,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:51,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:00:51,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:52,499 INFO L124 PetriNetUnfolderBase]: 2459/3677 cut-off events. [2024-06-28 04:00:52,499 INFO L125 PetriNetUnfolderBase]: For 123870/124069 co-relation queries the response was YES. [2024-06-28 04:00:52,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30949 conditions, 3677 events. 2459/3677 cut-off events. For 123870/124069 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17853 event pairs, 681 based on Foata normal form. 30/3618 useless extension candidates. Maximal degree in co-relation 30858. Up to 3060 conditions per place. [2024-06-28 04:00:52,540 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 164 selfloop transitions, 136 changer transitions 0/339 dead transitions. [2024-06-28 04:00:52,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 339 transitions, 5876 flow [2024-06-28 04:00:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 04:00:52,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 04:00:52,542 INFO L175 Difference]: Start difference. First operand has 189 places, 309 transitions, 5060 flow. Second operand 7 states and 135 transitions. [2024-06-28 04:00:52,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 339 transitions, 5876 flow [2024-06-28 04:00:52,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 339 transitions, 5795 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 04:00:52,741 INFO L231 Difference]: Finished difference. Result has 189 places, 311 transitions, 5368 flow [2024-06-28 04:00:52,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5368, PETRI_PLACES=189, PETRI_TRANSITIONS=311} [2024-06-28 04:00:52,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-28 04:00:52,742 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 311 transitions, 5368 flow [2024-06-28 04:00:52,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:52,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:52,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:52,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:00:52,743 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:52,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1915804637, now seen corresponding path program 5 times [2024-06-28 04:00:52,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:52,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521168552] [2024-06-28 04:00:52,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:53,322 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 04:00:53,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:53,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521168552] [2024-06-28 04:00:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521168552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:53,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:53,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:53,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405317052] [2024-06-28 04:00:53,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:53,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:53,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:53,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:53,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 311 transitions, 5368 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:53,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:53,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:53,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:54,163 INFO L124 PetriNetUnfolderBase]: 2614/3871 cut-off events. [2024-06-28 04:00:54,163 INFO L125 PetriNetUnfolderBase]: For 122929/122932 co-relation queries the response was YES. [2024-06-28 04:00:54,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32454 conditions, 3871 events. 2614/3871 cut-off events. For 122929/122932 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18356 event pairs, 594 based on Foata normal form. 6/3865 useless extension candidates. Maximal degree in co-relation 32362. Up to 3645 conditions per place. [2024-06-28 04:00:54,204 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 283 selfloop transitions, 66 changer transitions 0/352 dead transitions. [2024-06-28 04:00:54,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 352 transitions, 6360 flow [2024-06-28 04:00:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:00:54,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-28 04:00:54,205 INFO L175 Difference]: Start difference. First operand has 189 places, 311 transitions, 5368 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:00:54,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 352 transitions, 6360 flow [2024-06-28 04:00:54,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 352 transitions, 6127 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:54,407 INFO L231 Difference]: Finished difference. Result has 194 places, 328 transitions, 5521 flow [2024-06-28 04:00:54,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5521, PETRI_PLACES=194, PETRI_TRANSITIONS=328} [2024-06-28 04:00:54,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 04:00:54,408 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 328 transitions, 5521 flow [2024-06-28 04:00:54,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:54,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:54,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:54,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:00:54,409 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:54,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1912085567, now seen corresponding path program 6 times [2024-06-28 04:00:54,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:54,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938142318] [2024-06-28 04:00:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:54,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:55,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:55,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938142318] [2024-06-28 04:00:55,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938142318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:55,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:55,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:55,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921831668] [2024-06-28 04:00:55,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:55,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:55,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:55,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:55,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:55,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 328 transitions, 5521 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:55,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:55,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:55,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:55,956 INFO L124 PetriNetUnfolderBase]: 2871/4239 cut-off events. [2024-06-28 04:00:55,956 INFO L125 PetriNetUnfolderBase]: For 128754/128757 co-relation queries the response was YES. [2024-06-28 04:00:55,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35362 conditions, 4239 events. 2871/4239 cut-off events. For 128754/128757 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 20391 event pairs, 627 based on Foata normal form. 6/4233 useless extension candidates. Maximal degree in co-relation 35268. Up to 3698 conditions per place. [2024-06-28 04:00:56,003 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 295 selfloop transitions, 96 changer transitions 0/394 dead transitions. [2024-06-28 04:00:56,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 394 transitions, 7154 flow [2024-06-28 04:00:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:00:56,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 04:00:56,005 INFO L175 Difference]: Start difference. First operand has 194 places, 328 transitions, 5521 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:00:56,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 394 transitions, 7154 flow [2024-06-28 04:00:56,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 394 transitions, 7110 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:56,231 INFO L231 Difference]: Finished difference. Result has 203 places, 361 transitions, 6241 flow [2024-06-28 04:00:56,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5477, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6241, PETRI_PLACES=203, PETRI_TRANSITIONS=361} [2024-06-28 04:00:56,232 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-28 04:00:56,232 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 361 transitions, 6241 flow [2024-06-28 04:00:56,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:56,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:56,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:56,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:00:56,232 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:56,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1912079987, now seen corresponding path program 7 times [2024-06-28 04:00:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247320087] [2024-06-28 04:00:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:56,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247320087] [2024-06-28 04:00:56,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247320087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:56,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:56,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668375140] [2024-06-28 04:00:56,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:56,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:56,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 361 transitions, 6241 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:56,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:56,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:56,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:57,831 INFO L124 PetriNetUnfolderBase]: 2857/4221 cut-off events. [2024-06-28 04:00:57,831 INFO L125 PetriNetUnfolderBase]: For 141302/141305 co-relation queries the response was YES. [2024-06-28 04:00:57,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36769 conditions, 4221 events. 2857/4221 cut-off events. For 141302/141305 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 20348 event pairs, 612 based on Foata normal form. 10/4219 useless extension candidates. Maximal degree in co-relation 36671. Up to 3694 conditions per place. [2024-06-28 04:00:57,873 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 289 selfloop transitions, 102 changer transitions 0/394 dead transitions. [2024-06-28 04:00:57,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 394 transitions, 7365 flow [2024-06-28 04:00:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:00:57,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 04:00:57,875 INFO L175 Difference]: Start difference. First operand has 203 places, 361 transitions, 6241 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:00:57,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 394 transitions, 7365 flow [2024-06-28 04:00:58,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 394 transitions, 7218 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:58,130 INFO L231 Difference]: Finished difference. Result has 209 places, 366 transitions, 6455 flow [2024-06-28 04:00:58,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6102, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6455, PETRI_PLACES=209, PETRI_TRANSITIONS=366} [2024-06-28 04:00:58,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-28 04:00:58,131 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 366 transitions, 6455 flow [2024-06-28 04:00:58,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:58,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:58,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:58,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:00:58,132 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:58,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash -755291082, now seen corresponding path program 2 times [2024-06-28 04:00:58,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:58,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26005774] [2024-06-28 04:00:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:58,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:58,745 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 04:00:58,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:58,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26005774] [2024-06-28 04:00:58,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26005774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:58,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:58,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:58,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884941476] [2024-06-28 04:00:58,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:58,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:58,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:58,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:00:58,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 366 transitions, 6455 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:58,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:58,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:00:58,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:59,601 INFO L124 PetriNetUnfolderBase]: 2828/4181 cut-off events. [2024-06-28 04:00:59,602 INFO L125 PetriNetUnfolderBase]: For 142584/142586 co-relation queries the response was YES. [2024-06-28 04:00:59,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36621 conditions, 4181 events. 2828/4181 cut-off events. For 142584/142586 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20123 event pairs, 569 based on Foata normal form. 14/4193 useless extension candidates. Maximal degree in co-relation 36520. Up to 3398 conditions per place. [2024-06-28 04:00:59,721 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 252 selfloop transitions, 153 changer transitions 0/408 dead transitions. [2024-06-28 04:00:59,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 408 transitions, 7713 flow [2024-06-28 04:00:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:00:59,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:00:59,723 INFO L175 Difference]: Start difference. First operand has 209 places, 366 transitions, 6455 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:00:59,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 408 transitions, 7713 flow [2024-06-28 04:00:59,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 408 transitions, 7582 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:59,966 INFO L231 Difference]: Finished difference. Result has 214 places, 379 transitions, 6963 flow [2024-06-28 04:00:59,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6340, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6963, PETRI_PLACES=214, PETRI_TRANSITIONS=379} [2024-06-28 04:00:59,967 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-28 04:00:59,967 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 379 transitions, 6963 flow [2024-06-28 04:00:59,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:59,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:59,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:59,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:00:59,968 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:59,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -708618296, now seen corresponding path program 3 times [2024-06-28 04:00:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643578230] [2024-06-28 04:00:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:00,649 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 04:01:00,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:00,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643578230] [2024-06-28 04:01:00,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643578230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:00,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:00,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:00,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108240891] [2024-06-28 04:01:00,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:00,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:00,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:00,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:00,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 379 transitions, 6963 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:00,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:00,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:00,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:01,501 INFO L124 PetriNetUnfolderBase]: 2839/4207 cut-off events. [2024-06-28 04:01:01,502 INFO L125 PetriNetUnfolderBase]: For 151778/151790 co-relation queries the response was YES. [2024-06-28 04:01:01,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37801 conditions, 4207 events. 2839/4207 cut-off events. For 151778/151790 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20493 event pairs, 865 based on Foata normal form. 10/4211 useless extension candidates. Maximal degree in co-relation 37698. Up to 4050 conditions per place. [2024-06-28 04:01:01,548 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 352 selfloop transitions, 49 changer transitions 0/404 dead transitions. [2024-06-28 04:01:01,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 404 transitions, 7893 flow [2024-06-28 04:01:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:01:01,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 04:01:01,550 INFO L175 Difference]: Start difference. First operand has 214 places, 379 transitions, 6963 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:01:01,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 404 transitions, 7893 flow [2024-06-28 04:01:01,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 404 transitions, 7612 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:01,892 INFO L231 Difference]: Finished difference. Result has 217 places, 382 transitions, 6836 flow [2024-06-28 04:01:01,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6682, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6836, PETRI_PLACES=217, PETRI_TRANSITIONS=382} [2024-06-28 04:01:01,893 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 04:01:01,893 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 382 transitions, 6836 flow [2024-06-28 04:01:01,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:01,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:01,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:01,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:01:01,894 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:01,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:01,894 INFO L85 PathProgramCache]: Analyzing trace with hash 847372747, now seen corresponding path program 8 times [2024-06-28 04:01:01,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:01,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922365267] [2024-06-28 04:01:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:01,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:02,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922365267] [2024-06-28 04:01:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922365267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:02,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:02,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:02,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505930112] [2024-06-28 04:01:02,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:02,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:02,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:02,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:02,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:02,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 382 transitions, 6836 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:02,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:02,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:02,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:03,238 INFO L124 PetriNetUnfolderBase]: 2937/4343 cut-off events. [2024-06-28 04:01:03,239 INFO L125 PetriNetUnfolderBase]: For 163322/163325 co-relation queries the response was YES. [2024-06-28 04:01:03,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39004 conditions, 4343 events. 2937/4343 cut-off events. For 163322/163325 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 21134 event pairs, 548 based on Foata normal form. 10/4335 useless extension candidates. Maximal degree in co-relation 38900. Up to 3260 conditions per place. [2024-06-28 04:01:03,288 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 255 selfloop transitions, 170 changer transitions 0/428 dead transitions. [2024-06-28 04:01:03,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 428 transitions, 8320 flow [2024-06-28 04:01:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 04:01:03,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 04:01:03,290 INFO L175 Difference]: Start difference. First operand has 217 places, 382 transitions, 6836 flow. Second operand 8 states and 142 transitions. [2024-06-28 04:01:03,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 428 transitions, 8320 flow [2024-06-28 04:01:03,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 428 transitions, 8190 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:03,616 INFO L231 Difference]: Finished difference. Result has 221 places, 396 transitions, 7372 flow [2024-06-28 04:01:03,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6706, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7372, PETRI_PLACES=221, PETRI_TRANSITIONS=396} [2024-06-28 04:01:03,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-28 04:01:03,617 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 396 transitions, 7372 flow [2024-06-28 04:01:03,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:03,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:03,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:03,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:01:03,617 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:03,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash -611191302, now seen corresponding path program 4 times [2024-06-28 04:01:03,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066065041] [2024-06-28 04:01:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:04,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:04,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066065041] [2024-06-28 04:01:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066065041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:04,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:04,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146918392] [2024-06-28 04:01:04,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:04,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:04,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:04,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:04,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:04,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 396 transitions, 7372 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:04,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:04,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:04,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:05,318 INFO L124 PetriNetUnfolderBase]: 2926/4333 cut-off events. [2024-06-28 04:01:05,318 INFO L125 PetriNetUnfolderBase]: For 175151/175163 co-relation queries the response was YES. [2024-06-28 04:01:05,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40468 conditions, 4333 events. 2926/4333 cut-off events. For 175151/175163 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 21243 event pairs, 872 based on Foata normal form. 10/4337 useless extension candidates. Maximal degree in co-relation 40361. Up to 4124 conditions per place. [2024-06-28 04:01:05,366 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 361 selfloop transitions, 67 changer transitions 0/431 dead transitions. [2024-06-28 04:01:05,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 431 transitions, 8566 flow [2024-06-28 04:01:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:05,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 04:01:05,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 04:01:05,368 INFO L175 Difference]: Start difference. First operand has 221 places, 396 transitions, 7372 flow. Second operand 9 states and 143 transitions. [2024-06-28 04:01:05,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 431 transitions, 8566 flow [2024-06-28 04:01:05,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 431 transitions, 8399 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-06-28 04:01:05,746 INFO L231 Difference]: Finished difference. Result has 229 places, 403 transitions, 7493 flow [2024-06-28 04:01:05,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7213, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7493, PETRI_PLACES=229, PETRI_TRANSITIONS=403} [2024-06-28 04:01:05,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-28 04:01:05,747 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 403 transitions, 7493 flow [2024-06-28 04:01:05,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:05,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:05,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:05,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:01:05,748 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:05,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash -715970163, now seen corresponding path program 9 times [2024-06-28 04:01:05,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:05,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207057274] [2024-06-28 04:01:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:05,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:06,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207057274] [2024-06-28 04:01:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207057274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:06,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:06,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:06,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532205538] [2024-06-28 04:01:06,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:06,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:06,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:06,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:06,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 403 transitions, 7493 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:06,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:06,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:07,247 INFO L124 PetriNetUnfolderBase]: 2976/4400 cut-off events. [2024-06-28 04:01:07,247 INFO L125 PetriNetUnfolderBase]: For 181127/181130 co-relation queries the response was YES. [2024-06-28 04:01:07,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40792 conditions, 4400 events. 2976/4400 cut-off events. For 181127/181130 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21390 event pairs, 589 based on Foata normal form. 10/4392 useless extension candidates. Maximal degree in co-relation 40682. Up to 3285 conditions per place. [2024-06-28 04:01:07,291 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 277 selfloop transitions, 160 changer transitions 0/440 dead transitions. [2024-06-28 04:01:07,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 440 transitions, 8989 flow [2024-06-28 04:01:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:01:07,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 04:01:07,293 INFO L175 Difference]: Start difference. First operand has 229 places, 403 transitions, 7493 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:01:07,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 440 transitions, 8989 flow [2024-06-28 04:01:07,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 440 transitions, 8853 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:07,628 INFO L231 Difference]: Finished difference. Result has 231 places, 407 transitions, 7769 flow [2024-06-28 04:01:07,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7357, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7769, PETRI_PLACES=231, PETRI_TRANSITIONS=407} [2024-06-28 04:01:07,629 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-28 04:01:07,629 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 407 transitions, 7769 flow [2024-06-28 04:01:07,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:07,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:07,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:07,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:01:07,630 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:07,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:07,630 INFO L85 PathProgramCache]: Analyzing trace with hash -715969946, now seen corresponding path program 5 times [2024-06-28 04:01:07,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:07,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869290912] [2024-06-28 04:01:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:07,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:08,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:08,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869290912] [2024-06-28 04:01:08,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869290912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:08,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:08,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:08,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669610379] [2024-06-28 04:01:08,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:08,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:08,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:08,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:08,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:08,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:08,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 407 transitions, 7769 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:08,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:08,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:08,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:09,278 INFO L124 PetriNetUnfolderBase]: 2965/4390 cut-off events. [2024-06-28 04:01:09,278 INFO L125 PetriNetUnfolderBase]: For 189207/189219 co-relation queries the response was YES. [2024-06-28 04:01:09,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41421 conditions, 4390 events. 2965/4390 cut-off events. For 189207/189219 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 21571 event pairs, 873 based on Foata normal form. 10/4394 useless extension candidates. Maximal degree in co-relation 41310. Up to 4233 conditions per place. [2024-06-28 04:01:09,329 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 380 selfloop transitions, 46 changer transitions 0/429 dead transitions. [2024-06-28 04:01:09,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 429 transitions, 8707 flow [2024-06-28 04:01:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:01:09,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 04:01:09,330 INFO L175 Difference]: Start difference. First operand has 231 places, 407 transitions, 7769 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:01:09,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 429 transitions, 8707 flow [2024-06-28 04:01:09,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 429 transitions, 8141 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:09,704 INFO L231 Difference]: Finished difference. Result has 233 places, 407 transitions, 7303 flow [2024-06-28 04:01:09,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7203, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7303, PETRI_PLACES=233, PETRI_TRANSITIONS=407} [2024-06-28 04:01:09,705 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-28 04:01:09,705 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 407 transitions, 7303 flow [2024-06-28 04:01:09,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:09,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:09,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:09,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:01:09,705 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:09,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash -715975743, now seen corresponding path program 10 times [2024-06-28 04:01:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:09,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418028426] [2024-06-28 04:01:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:10,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:10,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418028426] [2024-06-28 04:01:10,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418028426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:10,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:10,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:10,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203735541] [2024-06-28 04:01:10,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:10,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:10,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:10,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 407 transitions, 7303 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:10,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:10,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:10,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:11,354 INFO L124 PetriNetUnfolderBase]: 2955/4369 cut-off events. [2024-06-28 04:01:11,355 INFO L125 PetriNetUnfolderBase]: For 189026/189029 co-relation queries the response was YES. [2024-06-28 04:01:11,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39976 conditions, 4369 events. 2955/4369 cut-off events. For 189026/189029 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21216 event pairs, 582 based on Foata normal form. 6/4357 useless extension candidates. Maximal degree in co-relation 39865. Up to 3270 conditions per place. [2024-06-28 04:01:11,410 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 270 selfloop transitions, 167 changer transitions 0/440 dead transitions. [2024-06-28 04:01:11,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 440 transitions, 8635 flow [2024-06-28 04:01:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:01:11,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 04:01:11,411 INFO L175 Difference]: Start difference. First operand has 233 places, 407 transitions, 7303 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:01:11,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 440 transitions, 8635 flow [2024-06-28 04:01:11,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 440 transitions, 8543 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:11,826 INFO L231 Difference]: Finished difference. Result has 235 places, 410 transitions, 7615 flow [2024-06-28 04:01:11,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7211, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7615, PETRI_PLACES=235, PETRI_TRANSITIONS=410} [2024-06-28 04:01:11,827 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 04:01:11,827 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 410 transitions, 7615 flow [2024-06-28 04:01:11,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:11,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:11,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:11,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:01:11,828 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 04:01:11,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:11,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1426608859, now seen corresponding path program 1 times [2024-06-28 04:01:11,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:11,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869519727] [2024-06-28 04:01:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:11,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:12,226 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 04:01:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:12,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869519727] [2024-06-28 04:01:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869519727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:12,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:12,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:01:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675745270] [2024-06-28 04:01:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:12,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:01:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:01:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:01:12,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:12,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 410 transitions, 7615 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:12,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:12,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:12,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:13,079 INFO L124 PetriNetUnfolderBase]: 2889/4272 cut-off events. [2024-06-28 04:01:13,079 INFO L125 PetriNetUnfolderBase]: For 192939/192951 co-relation queries the response was YES. [2024-06-28 04:01:13,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39992 conditions, 4272 events. 2889/4272 cut-off events. For 192939/192951 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 20804 event pairs, 841 based on Foata normal form. 12/4278 useless extension candidates. Maximal degree in co-relation 39880. Up to 4180 conditions per place. [2024-06-28 04:01:13,131 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 383 selfloop transitions, 31 changer transitions 0/417 dead transitions. [2024-06-28 04:01:13,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 417 transitions, 8467 flow [2024-06-28 04:01:13,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:01:13,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:01:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-28 04:01:13,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-06-28 04:01:13,133 INFO L175 Difference]: Start difference. First operand has 235 places, 410 transitions, 7615 flow. Second operand 5 states and 83 transitions. [2024-06-28 04:01:13,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 417 transitions, 8467 flow [2024-06-28 04:01:13,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 417 transitions, 8129 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:13,520 INFO L231 Difference]: Finished difference. Result has 236 places, 410 transitions, 7352 flow [2024-06-28 04:01:13,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7277, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7352, PETRI_PLACES=236, PETRI_TRANSITIONS=410} [2024-06-28 04:01:13,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-28 04:01:13,522 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 410 transitions, 7352 flow [2024-06-28 04:01:13,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:13,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:13,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:13,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:01:13,522 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:13,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1027782334, now seen corresponding path program 1 times [2024-06-28 04:01:13,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:13,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899919741] [2024-06-28 04:01:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:14,174 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 04:01:14,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:14,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899919741] [2024-06-28 04:01:14,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899919741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:14,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:14,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:14,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447445737] [2024-06-28 04:01:14,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:14,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:14,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:14,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:14,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:14,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:14,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 410 transitions, 7352 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:14,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:14,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:14,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:15,179 INFO L124 PetriNetUnfolderBase]: 2864/4267 cut-off events. [2024-06-28 04:01:15,179 INFO L125 PetriNetUnfolderBase]: For 219588/219649 co-relation queries the response was YES. [2024-06-28 04:01:15,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39867 conditions, 4267 events. 2864/4267 cut-off events. For 219588/219649 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 21187 event pairs, 555 based on Foata normal form. 15/4180 useless extension candidates. Maximal degree in co-relation 39754. Up to 3628 conditions per place. [2024-06-28 04:01:15,228 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 285 selfloop transitions, 98 changer transitions 0/458 dead transitions. [2024-06-28 04:01:15,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 458 transitions, 8464 flow [2024-06-28 04:01:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 04:01:15,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 04:01:15,230 INFO L175 Difference]: Start difference. First operand has 236 places, 410 transitions, 7352 flow. Second operand 9 states and 168 transitions. [2024-06-28 04:01:15,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 458 transitions, 8464 flow [2024-06-28 04:01:15,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 458 transitions, 8389 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:15,660 INFO L231 Difference]: Finished difference. Result has 242 places, 418 transitions, 7605 flow [2024-06-28 04:01:15,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7277, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7605, PETRI_PLACES=242, PETRI_TRANSITIONS=418} [2024-06-28 04:01:15,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-28 04:01:15,661 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 418 transitions, 7605 flow [2024-06-28 04:01:15,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:15,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:15,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:15,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:01:15,662 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:15,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash 386971284, now seen corresponding path program 2 times [2024-06-28 04:01:15,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:15,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916446778] [2024-06-28 04:01:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:15,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:16,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916446778] [2024-06-28 04:01:16,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916446778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:16,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:16,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:16,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068114689] [2024-06-28 04:01:16,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:16,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:16,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:16,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:16,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:16,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:16,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 418 transitions, 7605 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:16,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:16,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:16,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:17,454 INFO L124 PetriNetUnfolderBase]: 2915/4356 cut-off events. [2024-06-28 04:01:17,454 INFO L125 PetriNetUnfolderBase]: For 231539/231694 co-relation queries the response was YES. [2024-06-28 04:01:17,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41598 conditions, 4356 events. 2915/4356 cut-off events. For 231539/231694 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21922 event pairs, 715 based on Foata normal form. 27/4274 useless extension candidates. Maximal degree in co-relation 41484. Up to 3788 conditions per place. [2024-06-28 04:01:17,510 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 286 selfloop transitions, 102 changer transitions 0/463 dead transitions. [2024-06-28 04:01:17,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 463 transitions, 8751 flow [2024-06-28 04:01:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:01:17,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 04:01:17,512 INFO L175 Difference]: Start difference. First operand has 242 places, 418 transitions, 7605 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:01:17,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 463 transitions, 8751 flow [2024-06-28 04:01:18,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 463 transitions, 8512 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:18,024 INFO L231 Difference]: Finished difference. Result has 247 places, 426 transitions, 7745 flow [2024-06-28 04:01:18,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7416, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7745, PETRI_PLACES=247, PETRI_TRANSITIONS=426} [2024-06-28 04:01:18,024 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-28 04:01:18,025 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 426 transitions, 7745 flow [2024-06-28 04:01:18,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:18,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:18,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:18,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:01:18,025 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:18,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:18,026 INFO L85 PathProgramCache]: Analyzing trace with hash 388808034, now seen corresponding path program 3 times [2024-06-28 04:01:18,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:18,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476961858] [2024-06-28 04:01:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:18,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:18,766 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 04:01:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476961858] [2024-06-28 04:01:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476961858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156915190] [2024-06-28 04:01:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:18,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:18,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:18,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 426 transitions, 7745 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:18,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:18,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:18,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:19,856 INFO L124 PetriNetUnfolderBase]: 2921/4385 cut-off events. [2024-06-28 04:01:19,857 INFO L125 PetriNetUnfolderBase]: For 242652/242767 co-relation queries the response was YES. [2024-06-28 04:01:19,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42227 conditions, 4385 events. 2921/4385 cut-off events. For 242652/242767 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22248 event pairs, 680 based on Foata normal form. 18/4297 useless extension candidates. Maximal degree in co-relation 42111. Up to 3773 conditions per place. [2024-06-28 04:01:19,910 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 266 selfloop transitions, 123 changer transitions 0/464 dead transitions. [2024-06-28 04:01:19,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 464 transitions, 8817 flow [2024-06-28 04:01:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:01:19,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 04:01:19,912 INFO L175 Difference]: Start difference. First operand has 247 places, 426 transitions, 7745 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:01:19,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 464 transitions, 8817 flow [2024-06-28 04:01:20,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 464 transitions, 8567 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:20,424 INFO L231 Difference]: Finished difference. Result has 250 places, 428 transitions, 7814 flow [2024-06-28 04:01:20,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7495, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7814, PETRI_PLACES=250, PETRI_TRANSITIONS=428} [2024-06-28 04:01:20,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 04:01:20,424 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 428 transitions, 7814 flow [2024-06-28 04:01:20,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:20,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:20,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:20,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:01:20,430 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:20,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 388849078, now seen corresponding path program 1 times [2024-06-28 04:01:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:20,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371048100] [2024-06-28 04:01:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:20,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:21,062 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 04:01:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371048100] [2024-06-28 04:01:21,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371048100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:21,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:21,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:21,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276622610] [2024-06-28 04:01:21,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:21,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:21,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:21,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 428 transitions, 7814 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:21,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:21,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:21,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:22,154 INFO L124 PetriNetUnfolderBase]: 3100/4610 cut-off events. [2024-06-28 04:01:22,154 INFO L125 PetriNetUnfolderBase]: For 227715/227719 co-relation queries the response was YES. [2024-06-28 04:01:22,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43438 conditions, 4610 events. 3100/4610 cut-off events. For 227715/227719 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 23239 event pairs, 768 based on Foata normal form. 7/4615 useless extension candidates. Maximal degree in co-relation 43321. Up to 4332 conditions per place. [2024-06-28 04:01:22,204 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 383 selfloop transitions, 83 changer transitions 0/469 dead transitions. [2024-06-28 04:01:22,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 469 transitions, 9069 flow [2024-06-28 04:01:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:01:22,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 04:01:22,206 INFO L175 Difference]: Start difference. First operand has 250 places, 428 transitions, 7814 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:01:22,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 469 transitions, 9069 flow [2024-06-28 04:01:22,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 469 transitions, 8827 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:22,713 INFO L231 Difference]: Finished difference. Result has 254 places, 437 transitions, 7982 flow [2024-06-28 04:01:22,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7572, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7982, PETRI_PLACES=254, PETRI_TRANSITIONS=437} [2024-06-28 04:01:22,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 04:01:22,714 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 437 transitions, 7982 flow [2024-06-28 04:01:22,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:22,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:22,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:22,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:01:22,715 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:22,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2066145724, now seen corresponding path program 4 times [2024-06-28 04:01:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:22,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705784272] [2024-06-28 04:01:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:22,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:23,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:23,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705784272] [2024-06-28 04:01:23,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705784272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:23,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:23,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:23,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645195647] [2024-06-28 04:01:23,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:23,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:23,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:23,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:23,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 437 transitions, 7982 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:23,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:23,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:23,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:24,615 INFO L124 PetriNetUnfolderBase]: 3017/4526 cut-off events. [2024-06-28 04:01:24,616 INFO L125 PetriNetUnfolderBase]: For 259364/259509 co-relation queries the response was YES. [2024-06-28 04:01:24,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43583 conditions, 4526 events. 3017/4526 cut-off events. For 259364/259509 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 23203 event pairs, 556 based on Foata normal form. 52/4461 useless extension candidates. Maximal degree in co-relation 43464. Up to 3925 conditions per place. [2024-06-28 04:01:24,672 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 301 selfloop transitions, 102 changer transitions 0/484 dead transitions. [2024-06-28 04:01:24,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 484 transitions, 9154 flow [2024-06-28 04:01:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:01:24,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 04:01:24,674 INFO L175 Difference]: Start difference. First operand has 254 places, 437 transitions, 7982 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:01:24,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 484 transitions, 9154 flow [2024-06-28 04:01:25,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 484 transitions, 9019 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:25,253 INFO L231 Difference]: Finished difference. Result has 260 places, 449 transitions, 8241 flow [2024-06-28 04:01:25,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7847, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8241, PETRI_PLACES=260, PETRI_TRANSITIONS=449} [2024-06-28 04:01:25,254 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 04:01:25,254 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 449 transitions, 8241 flow [2024-06-28 04:01:25,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:25,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:25,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:25,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:01:25,255 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:25,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2066085150, now seen corresponding path program 2 times [2024-06-28 04:01:25,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:25,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702543226] [2024-06-28 04:01:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:25,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:26,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:26,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702543226] [2024-06-28 04:01:26,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702543226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:26,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:26,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:26,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634889805] [2024-06-28 04:01:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:26,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:26,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:26,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 449 transitions, 8241 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:26,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:26,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:26,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:27,190 INFO L124 PetriNetUnfolderBase]: 3221/4792 cut-off events. [2024-06-28 04:01:27,190 INFO L125 PetriNetUnfolderBase]: For 245599/245605 co-relation queries the response was YES. [2024-06-28 04:01:27,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45006 conditions, 4792 events. 3221/4792 cut-off events. For 245599/245605 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24393 event pairs, 647 based on Foata normal form. 9/4799 useless extension candidates. Maximal degree in co-relation 44885. Up to 4518 conditions per place. [2024-06-28 04:01:27,248 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 396 selfloop transitions, 86 changer transitions 0/485 dead transitions. [2024-06-28 04:01:27,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 485 transitions, 9442 flow [2024-06-28 04:01:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:01:27,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 04:01:27,255 INFO L175 Difference]: Start difference. First operand has 260 places, 449 transitions, 8241 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:01:27,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 485 transitions, 9442 flow [2024-06-28 04:01:27,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 485 transitions, 9191 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:27,920 INFO L231 Difference]: Finished difference. Result has 264 places, 455 transitions, 8332 flow [2024-06-28 04:01:27,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7990, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8332, PETRI_PLACES=264, PETRI_TRANSITIONS=455} [2024-06-28 04:01:27,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-28 04:01:27,921 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 455 transitions, 8332 flow [2024-06-28 04:01:27,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:27,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:27,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:01:27,922 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:27,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2063404084, now seen corresponding path program 5 times [2024-06-28 04:01:27,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:27,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807422407] [2024-06-28 04:01:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:27,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807422407] [2024-06-28 04:01:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807422407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608339392] [2024-06-28 04:01:28,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:28,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:28,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:28,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 455 transitions, 8332 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:28,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:28,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:28,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:29,885 INFO L124 PetriNetUnfolderBase]: 3031/4562 cut-off events. [2024-06-28 04:01:29,885 INFO L125 PetriNetUnfolderBase]: For 280472/280683 co-relation queries the response was YES. [2024-06-28 04:01:29,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44281 conditions, 4562 events. 3031/4562 cut-off events. For 280472/280683 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23608 event pairs, 563 based on Foata normal form. 50/4494 useless extension candidates. Maximal degree in co-relation 44158. Up to 3939 conditions per place. [2024-06-28 04:01:29,949 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 288 selfloop transitions, 121 changer transitions 0/493 dead transitions. [2024-06-28 04:01:29,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 493 transitions, 9456 flow [2024-06-28 04:01:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:29,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:01:29,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 04:01:29,951 INFO L175 Difference]: Start difference. First operand has 264 places, 455 transitions, 8332 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:01:29,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 493 transitions, 9456 flow [2024-06-28 04:01:30,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 493 transitions, 9342 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:30,651 INFO L231 Difference]: Finished difference. Result has 269 places, 459 transitions, 8555 flow [2024-06-28 04:01:30,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8218, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8555, PETRI_PLACES=269, PETRI_TRANSITIONS=459} [2024-06-28 04:01:30,652 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-28 04:01:30,652 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 459 transitions, 8555 flow [2024-06-28 04:01:30,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:30,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:30,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:01:30,652 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:30,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:30,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1947997594, now seen corresponding path program 6 times [2024-06-28 04:01:30,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:30,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634485295] [2024-06-28 04:01:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:31,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:31,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634485295] [2024-06-28 04:01:31,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634485295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:31,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:31,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:31,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119175064] [2024-06-28 04:01:31,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:31,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:31,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:31,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:31,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:31,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:31,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 459 transitions, 8555 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:31,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:31,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:31,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:32,779 INFO L124 PetriNetUnfolderBase]: 3057/4596 cut-off events. [2024-06-28 04:01:32,779 INFO L125 PetriNetUnfolderBase]: For 297704/297931 co-relation queries the response was YES. [2024-06-28 04:01:32,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45275 conditions, 4596 events. 3057/4596 cut-off events. For 297704/297931 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23687 event pairs, 548 based on Foata normal form. 48/4522 useless extension candidates. Maximal degree in co-relation 45151. Up to 3891 conditions per place. [2024-06-28 04:01:32,840 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 266 selfloop transitions, 146 changer transitions 0/496 dead transitions. [2024-06-28 04:01:32,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 496 transitions, 9699 flow [2024-06-28 04:01:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:01:32,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 04:01:32,842 INFO L175 Difference]: Start difference. First operand has 269 places, 459 transitions, 8555 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:01:32,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 496 transitions, 9699 flow [2024-06-28 04:01:33,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 496 transitions, 9483 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:33,486 INFO L231 Difference]: Finished difference. Result has 273 places, 461 transitions, 8710 flow [2024-06-28 04:01:33,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8341, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8710, PETRI_PLACES=273, PETRI_TRANSITIONS=461} [2024-06-28 04:01:33,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-28 04:01:33,487 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 461 transitions, 8710 flow [2024-06-28 04:01:33,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:33,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:33,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:33,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:01:33,488 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:33,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1947812896, now seen corresponding path program 1 times [2024-06-28 04:01:33,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:33,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240616339] [2024-06-28 04:01:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240616339] [2024-06-28 04:01:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240616339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:34,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:34,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977962201] [2024-06-28 04:01:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:34,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:34,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:34,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:34,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:34,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:34,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 461 transitions, 8710 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:34,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:34,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:34,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:35,387 INFO L124 PetriNetUnfolderBase]: 3382/5051 cut-off events. [2024-06-28 04:01:35,387 INFO L125 PetriNetUnfolderBase]: For 292906/292910 co-relation queries the response was YES. [2024-06-28 04:01:35,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47364 conditions, 5051 events. 3382/5051 cut-off events. For 292906/292910 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 26179 event pairs, 648 based on Foata normal form. 28/5077 useless extension candidates. Maximal degree in co-relation 47239. Up to 4292 conditions per place. [2024-06-28 04:01:35,453 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 353 selfloop transitions, 147 changer transitions 0/503 dead transitions. [2024-06-28 04:01:35,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 503 transitions, 9956 flow [2024-06-28 04:01:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 04:01:35,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225 [2024-06-28 04:01:35,455 INFO L175 Difference]: Start difference. First operand has 273 places, 461 transitions, 8710 flow. Second operand 10 states and 169 transitions. [2024-06-28 04:01:35,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 503 transitions, 9956 flow [2024-06-28 04:01:36,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 503 transitions, 9609 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:36,177 INFO L231 Difference]: Finished difference. Result has 276 places, 463 transitions, 8713 flow [2024-06-28 04:01:36,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8363, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8713, PETRI_PLACES=276, PETRI_TRANSITIONS=463} [2024-06-28 04:01:36,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 04:01:36,178 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 463 transitions, 8713 flow [2024-06-28 04:01:36,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:36,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:36,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:36,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:01:36,179 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:36,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash 736738166, now seen corresponding path program 7 times [2024-06-28 04:01:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:36,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866127067] [2024-06-28 04:01:36,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866127067] [2024-06-28 04:01:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866127067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:37,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:37,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:37,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198988114] [2024-06-28 04:01:37,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:37,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:37,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:37,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:37,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 463 transitions, 8713 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:37,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:37,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:37,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:38,275 INFO L124 PetriNetUnfolderBase]: 3265/4943 cut-off events. [2024-06-28 04:01:38,275 INFO L125 PetriNetUnfolderBase]: For 331097/331418 co-relation queries the response was YES. [2024-06-28 04:01:38,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47730 conditions, 4943 events. 3265/4943 cut-off events. For 331097/331418 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 26266 event pairs, 594 based on Foata normal form. 105/4913 useless extension candidates. Maximal degree in co-relation 47604. Up to 4177 conditions per place. [2024-06-28 04:01:38,338 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 330 selfloop transitions, 99 changer transitions 0/514 dead transitions. [2024-06-28 04:01:38,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 514 transitions, 10069 flow [2024-06-28 04:01:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 04:01:38,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 04:01:38,339 INFO L175 Difference]: Start difference. First operand has 276 places, 463 transitions, 8713 flow. Second operand 9 states and 166 transitions. [2024-06-28 04:01:38,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 514 transitions, 10069 flow [2024-06-28 04:01:39,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 514 transitions, 9736 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:39,035 INFO L231 Difference]: Finished difference. Result has 279 places, 477 transitions, 8829 flow [2024-06-28 04:01:39,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8380, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8829, PETRI_PLACES=279, PETRI_TRANSITIONS=477} [2024-06-28 04:01:39,036 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 04:01:39,036 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 477 transitions, 8829 flow [2024-06-28 04:01:39,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:39,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:39,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:39,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:01:39,036 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:39,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 736798616, now seen corresponding path program 8 times [2024-06-28 04:01:39,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:39,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391586800] [2024-06-28 04:01:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:39,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:39,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391586800] [2024-06-28 04:01:39,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391586800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:39,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:39,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:39,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583393277] [2024-06-28 04:01:39,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:39,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:39,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:39,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:39,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:40,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:40,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 477 transitions, 8829 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:40,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:40,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:40,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:41,298 INFO L124 PetriNetUnfolderBase]: 3329/5067 cut-off events. [2024-06-28 04:01:41,298 INFO L125 PetriNetUnfolderBase]: For 356478/356896 co-relation queries the response was YES. [2024-06-28 04:01:41,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49069 conditions, 5067 events. 3329/5067 cut-off events. For 356478/356896 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27413 event pairs, 772 based on Foata normal form. 91/5027 useless extension candidates. Maximal degree in co-relation 48941. Up to 4168 conditions per place. [2024-06-28 04:01:41,366 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 280 selfloop transitions, 152 changer transitions 0/517 dead transitions. [2024-06-28 04:01:41,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 517 transitions, 10083 flow [2024-06-28 04:01:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 04:01:41,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 04:01:41,371 INFO L175 Difference]: Start difference. First operand has 279 places, 477 transitions, 8829 flow. Second operand 8 states and 155 transitions. [2024-06-28 04:01:41,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 517 transitions, 10083 flow [2024-06-28 04:01:42,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 517 transitions, 9916 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:42,055 INFO L231 Difference]: Finished difference. Result has 282 places, 479 transitions, 9078 flow [2024-06-28 04:01:42,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8662, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9078, PETRI_PLACES=282, PETRI_TRANSITIONS=479} [2024-06-28 04:01:42,056 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-28 04:01:42,056 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 479 transitions, 9078 flow [2024-06-28 04:01:42,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:42,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:42,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:42,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:01:42,056 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:42,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2057457596, now seen corresponding path program 3 times [2024-06-28 04:01:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591455789] [2024-06-28 04:01:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:42,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:42,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591455789] [2024-06-28 04:01:42,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591455789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:42,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:42,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:42,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871742282] [2024-06-28 04:01:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:42,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:42,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:42,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:42,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:42,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 479 transitions, 9078 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:42,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:42,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:42,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:44,058 INFO L124 PetriNetUnfolderBase]: 3626/5443 cut-off events. [2024-06-28 04:01:44,058 INFO L125 PetriNetUnfolderBase]: For 309345/309349 co-relation queries the response was YES. [2024-06-28 04:01:44,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51241 conditions, 5443 events. 3626/5443 cut-off events. For 309345/309349 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 29153 event pairs, 951 based on Foata normal form. 6/5447 useless extension candidates. Maximal degree in co-relation 51112. Up to 5002 conditions per place. [2024-06-28 04:01:44,130 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 387 selfloop transitions, 117 changer transitions 0/507 dead transitions. [2024-06-28 04:01:44,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 507 transitions, 10214 flow [2024-06-28 04:01:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:44,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:01:44,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:01:44,131 INFO L175 Difference]: Start difference. First operand has 282 places, 479 transitions, 9078 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:01:44,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 507 transitions, 10214 flow [2024-06-28 04:01:45,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 507 transitions, 9878 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:45,135 INFO L231 Difference]: Finished difference. Result has 284 places, 479 transitions, 9026 flow [2024-06-28 04:01:45,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8742, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9026, PETRI_PLACES=284, PETRI_TRANSITIONS=479} [2024-06-28 04:01:45,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-28 04:01:45,135 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 479 transitions, 9026 flow [2024-06-28 04:01:45,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:45,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:45,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:45,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:01:45,136 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:45,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash 855070994, now seen corresponding path program 2 times [2024-06-28 04:01:45,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142191893] [2024-06-28 04:01:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:45,887 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 04:01:45,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:45,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142191893] [2024-06-28 04:01:45,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142191893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:45,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:45,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:45,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806851054] [2024-06-28 04:01:45,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:45,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:45,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:45,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:45,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:45,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 479 transitions, 9026 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:45,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:45,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:45,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:47,311 INFO L124 PetriNetUnfolderBase]: 3643/5460 cut-off events. [2024-06-28 04:01:47,311 INFO L125 PetriNetUnfolderBase]: For 299210/299214 co-relation queries the response was YES. [2024-06-28 04:01:47,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50760 conditions, 5460 events. 3643/5460 cut-off events. For 299210/299214 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 29171 event pairs, 1081 based on Foata normal form. 8/5466 useless extension candidates. Maximal degree in co-relation 50630. Up to 5289 conditions per place. [2024-06-28 04:01:47,376 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 461 selfloop transitions, 47 changer transitions 0/511 dead transitions. [2024-06-28 04:01:47,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 511 transitions, 10218 flow [2024-06-28 04:01:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 04:01:47,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 04:01:47,377 INFO L175 Difference]: Start difference. First operand has 284 places, 479 transitions, 9026 flow. Second operand 9 states and 140 transitions. [2024-06-28 04:01:47,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 511 transitions, 10218 flow [2024-06-28 04:01:48,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 511 transitions, 10052 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:48,108 INFO L231 Difference]: Finished difference. Result has 288 places, 482 transitions, 9025 flow [2024-06-28 04:01:48,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8860, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9025, PETRI_PLACES=288, PETRI_TRANSITIONS=482} [2024-06-28 04:01:48,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 04:01:48,109 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 482 transitions, 9025 flow [2024-06-28 04:01:48,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:48,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:48,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:48,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:01:48,110 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:48,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash 854886296, now seen corresponding path program 9 times [2024-06-28 04:01:48,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:48,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404224526] [2024-06-28 04:01:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:48,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:48,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:48,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404224526] [2024-06-28 04:01:48,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404224526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:48,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:48,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:48,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832664583] [2024-06-28 04:01:48,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:48,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:48,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:49,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:49,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 482 transitions, 9025 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:49,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:49,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:49,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:50,213 INFO L124 PetriNetUnfolderBase]: 3401/5164 cut-off events. [2024-06-28 04:01:50,214 INFO L125 PetriNetUnfolderBase]: For 333125/333503 co-relation queries the response was YES. [2024-06-28 04:01:50,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49609 conditions, 5164 events. 3401/5164 cut-off events. For 333125/333503 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 27813 event pairs, 601 based on Foata normal form. 89/5119 useless extension candidates. Maximal degree in co-relation 49478. Up to 4220 conditions per place. [2024-06-28 04:01:50,281 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 267 selfloop transitions, 169 changer transitions 0/523 dead transitions. [2024-06-28 04:01:50,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 523 transitions, 10387 flow [2024-06-28 04:01:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 04:01:50,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 04:01:50,282 INFO L175 Difference]: Start difference. First operand has 288 places, 482 transitions, 9025 flow. Second operand 8 states and 156 transitions. [2024-06-28 04:01:50,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 523 transitions, 10387 flow [2024-06-28 04:01:50,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 523 transitions, 10248 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:50,951 INFO L231 Difference]: Finished difference. Result has 289 places, 484 transitions, 9310 flow [2024-06-28 04:01:50,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8886, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9310, PETRI_PLACES=289, PETRI_TRANSITIONS=484} [2024-06-28 04:01:50,951 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-28 04:01:50,952 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 484 transitions, 9310 flow [2024-06-28 04:01:50,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:50,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:50,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:50,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:01:50,952 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:50,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:50,953 INFO L85 PathProgramCache]: Analyzing trace with hash -720414824, now seen corresponding path program 10 times [2024-06-28 04:01:50,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:50,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424898547] [2024-06-28 04:01:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:50,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:51,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424898547] [2024-06-28 04:01:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424898547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:51,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:51,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:51,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336349790] [2024-06-28 04:01:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:51,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 04:01:51,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 484 transitions, 9310 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:51,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:51,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 04:01:51,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:53,049 INFO L124 PetriNetUnfolderBase]: 3451/5245 cut-off events. [2024-06-28 04:01:53,050 INFO L125 PetriNetUnfolderBase]: For 350389/350769 co-relation queries the response was YES. [2024-06-28 04:01:53,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50921 conditions, 5245 events. 3451/5245 cut-off events. For 350389/350769 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 28169 event pairs, 588 based on Foata normal form. 89/5189 useless extension candidates. Maximal degree in co-relation 50789. Up to 4114 conditions per place. [2024-06-28 04:01:53,120 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 285 selfloop transitions, 153 changer transitions 0/525 dead transitions. [2024-06-28 04:01:53,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 525 transitions, 10804 flow [2024-06-28 04:01:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 04:01:53,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-28 04:01:53,122 INFO L175 Difference]: Start difference. First operand has 289 places, 484 transitions, 9310 flow. Second operand 8 states and 153 transitions. [2024-06-28 04:01:53,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 525 transitions, 10804 flow [2024-06-28 04:01:53,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 525 transitions, 10422 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:53,849 INFO L231 Difference]: Finished difference. Result has 291 places, 486 transitions, 9325 flow [2024-06-28 04:01:53,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8938, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9325, PETRI_PLACES=291, PETRI_TRANSITIONS=486} [2024-06-28 04:01:53,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-28 04:01:53,850 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 486 transitions, 9325 flow [2024-06-28 04:01:53,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:53,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:53,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:53,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:01:53,850 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:53,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash -720409864, now seen corresponding path program 1 times [2024-06-28 04:01:53,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:53,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316806188] [2024-06-28 04:01:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:53,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316806188] [2024-06-28 04:01:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316806188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:54,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:54,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329539853] [2024-06-28 04:01:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:54,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:54,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:54,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:54,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 486 transitions, 9325 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:54,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:54,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:54,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:55,866 INFO L124 PetriNetUnfolderBase]: 3794/5698 cut-off events. [2024-06-28 04:01:55,867 INFO L125 PetriNetUnfolderBase]: For 304672/304681 co-relation queries the response was YES. [2024-06-28 04:01:55,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52958 conditions, 5698 events. 3794/5698 cut-off events. For 304672/304681 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 30462 event pairs, 782 based on Foata normal form. 10/5690 useless extension candidates. Maximal degree in co-relation 52825. Up to 4565 conditions per place. [2024-06-28 04:01:55,947 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 337 selfloop transitions, 182 changer transitions 0/522 dead transitions. [2024-06-28 04:01:55,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 522 transitions, 10752 flow [2024-06-28 04:01:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:01:55,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:01:55,949 INFO L175 Difference]: Start difference. First operand has 291 places, 486 transitions, 9325 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:01:55,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 522 transitions, 10752 flow [2024-06-28 04:01:56,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 522 transitions, 10411 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:56,771 INFO L231 Difference]: Finished difference. Result has 294 places, 489 transitions, 9399 flow [2024-06-28 04:01:56,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8984, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9399, PETRI_PLACES=294, PETRI_TRANSITIONS=489} [2024-06-28 04:01:56,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-28 04:01:56,772 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 489 transitions, 9399 flow [2024-06-28 04:01:56,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:56,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:56,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:56,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:01:56,773 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:56,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 492503718, now seen corresponding path program 3 times [2024-06-28 04:01:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477815789] [2024-06-28 04:01:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:57,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:57,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477815789] [2024-06-28 04:01:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477815789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:57,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935835249] [2024-06-28 04:01:57,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:57,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:57,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:57,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:01:57,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 489 transitions, 9399 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:57,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:57,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:01:57,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:58,797 INFO L124 PetriNetUnfolderBase]: 3876/5836 cut-off events. [2024-06-28 04:01:58,798 INFO L125 PetriNetUnfolderBase]: For 329893/329902 co-relation queries the response was YES. [2024-06-28 04:01:58,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53438 conditions, 5836 events. 3876/5836 cut-off events. For 329893/329902 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 31525 event pairs, 801 based on Foata normal form. 34/5852 useless extension candidates. Maximal degree in co-relation 53304. Up to 4879 conditions per place. [2024-06-28 04:01:58,998 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 361 selfloop transitions, 166 changer transitions 0/530 dead transitions. [2024-06-28 04:01:58,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 530 transitions, 10733 flow [2024-06-28 04:01:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:01:59,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 04:01:59,000 INFO L175 Difference]: Start difference. First operand has 294 places, 489 transitions, 9399 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:01:59,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 530 transitions, 10733 flow [2024-06-28 04:01:59,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 530 transitions, 10311 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:59,864 INFO L231 Difference]: Finished difference. Result has 299 places, 495 transitions, 9452 flow [2024-06-28 04:01:59,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8985, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9452, PETRI_PLACES=299, PETRI_TRANSITIONS=495} [2024-06-28 04:01:59,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 04:01:59,865 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 495 transitions, 9452 flow [2024-06-28 04:01:59,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:59,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:59,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:59,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:01:59,866 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:59,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash -492335734, now seen corresponding path program 2 times [2024-06-28 04:01:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38276739] [2024-06-28 04:01:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:00,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38276739] [2024-06-28 04:02:00,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38276739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:00,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:00,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626835057] [2024-06-28 04:02:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:00,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:00,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:00,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 495 transitions, 9452 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:00,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:00,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:00,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:01,889 INFO L124 PetriNetUnfolderBase]: 3866/5822 cut-off events. [2024-06-28 04:02:01,889 INFO L125 PetriNetUnfolderBase]: For 321376/321385 co-relation queries the response was YES. [2024-06-28 04:02:01,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53816 conditions, 5822 events. 3866/5822 cut-off events. For 321376/321385 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 31488 event pairs, 760 based on Foata normal form. 10/5814 useless extension candidates. Maximal degree in co-relation 53678. Up to 4701 conditions per place. [2024-06-28 04:02:01,974 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 322 selfloop transitions, 200 changer transitions 0/525 dead transitions. [2024-06-28 04:02:01,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 525 transitions, 10650 flow [2024-06-28 04:02:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:01,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 04:02:01,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 04:02:01,976 INFO L175 Difference]: Start difference. First operand has 299 places, 495 transitions, 9452 flow. Second operand 9 states and 151 transitions. [2024-06-28 04:02:01,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 525 transitions, 10650 flow [2024-06-28 04:02:03,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 525 transitions, 10250 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:03,036 INFO L231 Difference]: Finished difference. Result has 300 places, 495 transitions, 9460 flow [2024-06-28 04:02:03,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9052, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9460, PETRI_PLACES=300, PETRI_TRANSITIONS=495} [2024-06-28 04:02:03,037 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-28 04:02:03,037 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 495 transitions, 9460 flow [2024-06-28 04:02:03,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:03,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:03,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:03,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:02:03,038 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:03,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash -713974016, now seen corresponding path program 4 times [2024-06-28 04:02:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019958730] [2024-06-28 04:02:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:03,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:03,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019958730] [2024-06-28 04:02:03,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019958730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:03,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:03,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:03,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244651900] [2024-06-28 04:02:03,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:03,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:03,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:03,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:03,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 495 transitions, 9460 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:03,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:03,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:05,125 INFO L124 PetriNetUnfolderBase]: 3958/5974 cut-off events. [2024-06-28 04:02:05,125 INFO L125 PetriNetUnfolderBase]: For 334298/334307 co-relation queries the response was YES. [2024-06-28 04:02:05,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54381 conditions, 5974 events. 3958/5974 cut-off events. For 334298/334307 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32583 event pairs, 774 based on Foata normal form. 30/5986 useless extension candidates. Maximal degree in co-relation 54244. Up to 5055 conditions per place. [2024-06-28 04:02:05,208 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 348 selfloop transitions, 181 changer transitions 0/532 dead transitions. [2024-06-28 04:02:05,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 532 transitions, 10768 flow [2024-06-28 04:02:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:02:05,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 04:02:05,210 INFO L175 Difference]: Start difference. First operand has 300 places, 495 transitions, 9460 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:02:05,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 532 transitions, 10768 flow [2024-06-28 04:02:05,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 532 transitions, 10348 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:05,988 INFO L231 Difference]: Finished difference. Result has 301 places, 497 transitions, 9467 flow [2024-06-28 04:02:05,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9040, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9467, PETRI_PLACES=301, PETRI_TRANSITIONS=497} [2024-06-28 04:02:05,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-28 04:02:05,989 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 497 transitions, 9467 flow [2024-06-28 04:02:05,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:05,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:05,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:05,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:02:05,989 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:05,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash -492098336, now seen corresponding path program 5 times [2024-06-28 04:02:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:05,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399042313] [2024-06-28 04:02:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:06,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399042313] [2024-06-28 04:02:06,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399042313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:06,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:06,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:06,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674623153] [2024-06-28 04:02:06,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:06,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:06,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:06,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:06,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 497 transitions, 9467 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:06,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:06,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:06,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:08,068 INFO L124 PetriNetUnfolderBase]: 3975/6001 cut-off events. [2024-06-28 04:02:08,069 INFO L125 PetriNetUnfolderBase]: For 326055/326064 co-relation queries the response was YES. [2024-06-28 04:02:08,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55054 conditions, 6001 events. 3975/6001 cut-off events. For 326055/326064 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32786 event pairs, 779 based on Foata normal form. 10/5993 useless extension candidates. Maximal degree in co-relation 54916. Up to 4949 conditions per place. [2024-06-28 04:02:08,151 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 313 selfloop transitions, 213 changer transitions 0/529 dead transitions. [2024-06-28 04:02:08,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 529 transitions, 10721 flow [2024-06-28 04:02:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:08,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:02:08,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 04:02:08,153 INFO L175 Difference]: Start difference. First operand has 301 places, 497 transitions, 9467 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:02:08,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 529 transitions, 10721 flow [2024-06-28 04:02:09,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 529 transitions, 10330 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:09,121 INFO L231 Difference]: Finished difference. Result has 304 places, 499 transitions, 9569 flow [2024-06-28 04:02:09,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9076, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9569, PETRI_PLACES=304, PETRI_TRANSITIONS=499} [2024-06-28 04:02:09,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-28 04:02:09,122 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 499 transitions, 9569 flow [2024-06-28 04:02:09,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:09,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:09,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:09,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:02:09,123 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:09,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1027205248, now seen corresponding path program 6 times [2024-06-28 04:02:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313715098] [2024-06-28 04:02:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:09,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:09,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:09,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313715098] [2024-06-28 04:02:09,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313715098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:09,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:09,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:09,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973910697] [2024-06-28 04:02:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:09,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:09,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:09,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:09,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:09,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 499 transitions, 9569 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:09,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:09,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:09,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:11,285 INFO L124 PetriNetUnfolderBase]: 3967/5994 cut-off events. [2024-06-28 04:02:11,285 INFO L125 PetriNetUnfolderBase]: For 333717/333729 co-relation queries the response was YES. [2024-06-28 04:02:11,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55086 conditions, 5994 events. 3967/5994 cut-off events. For 333717/333729 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 32904 event pairs, 1119 based on Foata normal form. 12/6000 useless extension candidates. Maximal degree in co-relation 54947. Up to 5643 conditions per place. [2024-06-28 04:02:11,356 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 449 selfloop transitions, 79 changer transitions 0/531 dead transitions. [2024-06-28 04:02:11,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 531 transitions, 10823 flow [2024-06-28 04:02:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:02:11,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-28 04:02:11,372 INFO L175 Difference]: Start difference. First operand has 304 places, 499 transitions, 9569 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:02:11,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 531 transitions, 10823 flow [2024-06-28 04:02:12,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 531 transitions, 10338 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:12,250 INFO L231 Difference]: Finished difference. Result has 307 places, 503 transitions, 9356 flow [2024-06-28 04:02:12,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9084, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9356, PETRI_PLACES=307, PETRI_TRANSITIONS=503} [2024-06-28 04:02:12,251 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-28 04:02:12,251 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 503 transitions, 9356 flow [2024-06-28 04:02:12,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:12,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:12,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:12,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:02:12,251 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:12,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1796482940, now seen corresponding path program 1 times [2024-06-28 04:02:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:12,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866045637] [2024-06-28 04:02:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:12,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:13,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866045637] [2024-06-28 04:02:13,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866045637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:13,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:13,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:13,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170285577] [2024-06-28 04:02:13,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:13,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:13,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:13,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:13,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:13,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 503 transitions, 9356 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:13,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:13,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:13,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:14,470 INFO L124 PetriNetUnfolderBase]: 3984/6023 cut-off events. [2024-06-28 04:02:14,470 INFO L125 PetriNetUnfolderBase]: For 345166/345172 co-relation queries the response was YES. [2024-06-28 04:02:14,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55068 conditions, 6023 events. 3984/6023 cut-off events. For 345166/345172 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 33055 event pairs, 772 based on Foata normal form. 10/6031 useless extension candidates. Maximal degree in co-relation 54927. Up to 5618 conditions per place. [2024-06-28 04:02:14,555 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 489 selfloop transitions, 68 changer transitions 0/560 dead transitions. [2024-06-28 04:02:14,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 560 transitions, 10932 flow [2024-06-28 04:02:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 04:02:14,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-28 04:02:14,557 INFO L175 Difference]: Start difference. First operand has 307 places, 503 transitions, 9356 flow. Second operand 10 states and 159 transitions. [2024-06-28 04:02:14,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 560 transitions, 10932 flow [2024-06-28 04:02:15,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 560 transitions, 10724 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:15,522 INFO L231 Difference]: Finished difference. Result has 314 places, 522 transitions, 9674 flow [2024-06-28 04:02:15,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9674, PETRI_PLACES=314, PETRI_TRANSITIONS=522} [2024-06-28 04:02:15,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-28 04:02:15,523 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 522 transitions, 9674 flow [2024-06-28 04:02:15,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:15,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:15,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:15,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:02:15,524 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:15,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -833379166, now seen corresponding path program 2 times [2024-06-28 04:02:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809452680] [2024-06-28 04:02:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:16,232 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 04:02:16,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:16,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809452680] [2024-06-28 04:02:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809452680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:16,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:16,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565248466] [2024-06-28 04:02:16,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:16,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:16,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:16,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 522 transitions, 9674 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:16,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:16,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:16,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:17,686 INFO L124 PetriNetUnfolderBase]: 4012/6061 cut-off events. [2024-06-28 04:02:17,686 INFO L125 PetriNetUnfolderBase]: For 353731/353737 co-relation queries the response was YES. [2024-06-28 04:02:17,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55961 conditions, 6061 events. 4012/6061 cut-off events. For 353731/353737 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33364 event pairs, 1000 based on Foata normal form. 10/6069 useless extension candidates. Maximal degree in co-relation 55816. Up to 5747 conditions per place. [2024-06-28 04:02:17,774 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 499 selfloop transitions, 69 changer transitions 0/571 dead transitions. [2024-06-28 04:02:17,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 571 transitions, 11214 flow [2024-06-28 04:02:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 04:02:17,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 04:02:17,775 INFO L175 Difference]: Start difference. First operand has 314 places, 522 transitions, 9674 flow. Second operand 10 states and 161 transitions. [2024-06-28 04:02:17,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 571 transitions, 11214 flow [2024-06-28 04:02:18,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 571 transitions, 10920 flow, removed 120 selfloop flow, removed 4 redundant places. [2024-06-28 04:02:18,748 INFO L231 Difference]: Finished difference. Result has 322 places, 533 transitions, 9826 flow [2024-06-28 04:02:18,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9498, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9826, PETRI_PLACES=322, PETRI_TRANSITIONS=533} [2024-06-28 04:02:18,749 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-28 04:02:18,749 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 533 transitions, 9826 flow [2024-06-28 04:02:18,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:18,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:18,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:18,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:02:18,750 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:18,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:18,750 INFO L85 PathProgramCache]: Analyzing trace with hash -831851176, now seen corresponding path program 3 times [2024-06-28 04:02:18,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:18,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524133426] [2024-06-28 04:02:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:18,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:19,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:19,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524133426] [2024-06-28 04:02:19,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524133426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:19,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:19,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974651814] [2024-06-28 04:02:19,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:19,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:19,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:19,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:19,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:19,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 533 transitions, 9826 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:19,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:19,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:19,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:21,077 INFO L124 PetriNetUnfolderBase]: 4054/6133 cut-off events. [2024-06-28 04:02:21,078 INFO L125 PetriNetUnfolderBase]: For 367394/367398 co-relation queries the response was YES. [2024-06-28 04:02:21,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56698 conditions, 6133 events. 4054/6133 cut-off events. For 367394/367398 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 33827 event pairs, 995 based on Foata normal form. 8/6139 useless extension candidates. Maximal degree in co-relation 56549. Up to 5735 conditions per place. [2024-06-28 04:02:21,170 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 487 selfloop transitions, 88 changer transitions 0/578 dead transitions. [2024-06-28 04:02:21,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 578 transitions, 11482 flow [2024-06-28 04:02:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 04:02:21,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:02:21,172 INFO L175 Difference]: Start difference. First operand has 322 places, 533 transitions, 9826 flow. Second operand 10 states and 165 transitions. [2024-06-28 04:02:21,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 578 transitions, 11482 flow [2024-06-28 04:02:22,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 578 transitions, 11368 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 04:02:22,339 INFO L231 Difference]: Finished difference. Result has 329 places, 539 transitions, 10064 flow [2024-06-28 04:02:22,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9712, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10064, PETRI_PLACES=329, PETRI_TRANSITIONS=539} [2024-06-28 04:02:22,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-28 04:02:22,340 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 539 transitions, 10064 flow [2024-06-28 04:02:22,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:22,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:22,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:22,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:02:22,341 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:22,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:22,341 INFO L85 PathProgramCache]: Analyzing trace with hash -870277846, now seen corresponding path program 4 times [2024-06-28 04:02:22,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:22,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276129307] [2024-06-28 04:02:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:22,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:23,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:23,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276129307] [2024-06-28 04:02:23,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276129307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:23,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:23,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323366972] [2024-06-28 04:02:23,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:23,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:23,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:23,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:23,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:23,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 539 transitions, 10064 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:23,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:23,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:23,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:24,819 INFO L124 PetriNetUnfolderBase]: 4046/6125 cut-off events. [2024-06-28 04:02:24,820 INFO L125 PetriNetUnfolderBase]: For 373619/373623 co-relation queries the response was YES. [2024-06-28 04:02:24,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56788 conditions, 6125 events. 4046/6125 cut-off events. For 373619/373623 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 33847 event pairs, 1007 based on Foata normal form. 8/6131 useless extension candidates. Maximal degree in co-relation 56636. Up to 5800 conditions per place. [2024-06-28 04:02:24,908 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 484 selfloop transitions, 90 changer transitions 0/577 dead transitions. [2024-06-28 04:02:24,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 577 transitions, 11403 flow [2024-06-28 04:02:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:02:24,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 04:02:24,909 INFO L175 Difference]: Start difference. First operand has 329 places, 539 transitions, 10064 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:02:24,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 577 transitions, 11403 flow [2024-06-28 04:02:26,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 577 transitions, 11156 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:26,170 INFO L231 Difference]: Finished difference. Result has 333 places, 540 transitions, 10042 flow [2024-06-28 04:02:26,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9843, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10042, PETRI_PLACES=333, PETRI_TRANSITIONS=540} [2024-06-28 04:02:26,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-28 04:02:26,171 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 540 transitions, 10042 flow [2024-06-28 04:02:26,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:26,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:26,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:26,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:02:26,171 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:26,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash 373993654, now seen corresponding path program 5 times [2024-06-28 04:02:26,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:26,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818492448] [2024-06-28 04:02:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:26,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:26,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:26,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818492448] [2024-06-28 04:02:26,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818492448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:26,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:26,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:26,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971675108] [2024-06-28 04:02:26,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:26,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:26,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:26,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:26,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:27,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:27,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 540 transitions, 10042 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:27,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:27,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:27,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:28,625 INFO L124 PetriNetUnfolderBase]: 4085/6172 cut-off events. [2024-06-28 04:02:28,625 INFO L125 PetriNetUnfolderBase]: For 381940/381948 co-relation queries the response was YES. [2024-06-28 04:02:28,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57145 conditions, 6172 events. 4085/6172 cut-off events. For 381940/381948 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 34010 event pairs, 773 based on Foata normal form. 12/6182 useless extension candidates. Maximal degree in co-relation 56991. Up to 5855 conditions per place. [2024-06-28 04:02:28,710 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 516 selfloop transitions, 71 changer transitions 0/590 dead transitions. [2024-06-28 04:02:28,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 590 transitions, 11533 flow [2024-06-28 04:02:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:02:28,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 04:02:28,712 INFO L175 Difference]: Start difference. First operand has 333 places, 540 transitions, 10042 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:02:28,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 590 transitions, 11533 flow [2024-06-28 04:02:29,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 590 transitions, 11411 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:29,962 INFO L231 Difference]: Finished difference. Result has 339 places, 554 transitions, 10305 flow [2024-06-28 04:02:29,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9920, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10305, PETRI_PLACES=339, PETRI_TRANSITIONS=554} [2024-06-28 04:02:29,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-28 04:02:29,963 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 554 transitions, 10305 flow [2024-06-28 04:02:29,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:29,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:29,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:29,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:02:29,963 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:29,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash 375871324, now seen corresponding path program 6 times [2024-06-28 04:02:29,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:29,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816709468] [2024-06-28 04:02:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:29,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:30,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:30,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816709468] [2024-06-28 04:02:30,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816709468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:30,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:30,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:30,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950004110] [2024-06-28 04:02:30,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:30,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:30,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:30,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:30,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 554 transitions, 10305 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:30,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:30,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:30,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:32,551 INFO L124 PetriNetUnfolderBase]: 4113/6218 cut-off events. [2024-06-28 04:02:32,551 INFO L125 PetriNetUnfolderBase]: For 396531/396539 co-relation queries the response was YES. [2024-06-28 04:02:32,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58099 conditions, 6218 events. 4113/6218 cut-off events. For 396531/396539 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 34304 event pairs, 812 based on Foata normal form. 12/6228 useless extension candidates. Maximal degree in co-relation 57942. Up to 5898 conditions per place. [2024-06-28 04:02:32,633 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 500 selfloop transitions, 90 changer transitions 0/593 dead transitions. [2024-06-28 04:02:32,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 593 transitions, 11719 flow [2024-06-28 04:02:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:32,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 04:02:32,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-28 04:02:32,635 INFO L175 Difference]: Start difference. First operand has 339 places, 554 transitions, 10305 flow. Second operand 10 states and 163 transitions. [2024-06-28 04:02:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 593 transitions, 11719 flow [2024-06-28 04:02:34,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 593 transitions, 11594 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 04:02:34,014 INFO L231 Difference]: Finished difference. Result has 345 places, 558 transitions, 10468 flow [2024-06-28 04:02:34,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10180, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10468, PETRI_PLACES=345, PETRI_TRANSITIONS=558} [2024-06-28 04:02:34,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 04:02:34,015 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 558 transitions, 10468 flow [2024-06-28 04:02:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:34,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:34,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:34,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:02:34,016 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:34,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1162656418, now seen corresponding path program 7 times [2024-06-28 04:02:34,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:34,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139543914] [2024-06-28 04:02:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:34,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:34,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:34,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139543914] [2024-06-28 04:02:34,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139543914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:34,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:34,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:34,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416122188] [2024-06-28 04:02:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:34,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:34,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:34,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:34,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:34,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 558 transitions, 10468 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:34,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:34,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:34,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:36,606 INFO L124 PetriNetUnfolderBase]: 4141/6260 cut-off events. [2024-06-28 04:02:36,606 INFO L125 PetriNetUnfolderBase]: For 410582/410590 co-relation queries the response was YES. [2024-06-28 04:02:36,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58883 conditions, 6260 events. 4141/6260 cut-off events. For 410582/410590 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34573 event pairs, 811 based on Foata normal form. 12/6270 useless extension candidates. Maximal degree in co-relation 58724. Up to 5864 conditions per place. [2024-06-28 04:02:36,689 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 505 selfloop transitions, 92 changer transitions 0/600 dead transitions. [2024-06-28 04:02:36,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 600 transitions, 11937 flow [2024-06-28 04:02:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 04:02:36,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 04:02:36,690 INFO L175 Difference]: Start difference. First operand has 345 places, 558 transitions, 10468 flow. Second operand 10 states and 164 transitions. [2024-06-28 04:02:36,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 600 transitions, 11937 flow [2024-06-28 04:02:38,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 600 transitions, 11765 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 04:02:38,014 INFO L231 Difference]: Finished difference. Result has 351 places, 565 transitions, 10657 flow [2024-06-28 04:02:38,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10296, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10657, PETRI_PLACES=351, PETRI_TRANSITIONS=565} [2024-06-28 04:02:38,029 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-28 04:02:38,030 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 565 transitions, 10657 flow [2024-06-28 04:02:38,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:38,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:38,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:38,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:02:38,030 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:38,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1167952850, now seen corresponding path program 8 times [2024-06-28 04:02:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:38,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893009111] [2024-06-28 04:02:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:38,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:38,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893009111] [2024-06-28 04:02:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893009111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:38,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:38,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:38,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169414096] [2024-06-28 04:02:38,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:38,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:38,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:38,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:38,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:38,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 565 transitions, 10657 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:38,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:38,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:38,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:40,639 INFO L124 PetriNetUnfolderBase]: 4233/6412 cut-off events. [2024-06-28 04:02:40,639 INFO L125 PetriNetUnfolderBase]: For 461316/461324 co-relation queries the response was YES. [2024-06-28 04:02:40,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60344 conditions, 6412 events. 4233/6412 cut-off events. For 461316/461324 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35676 event pairs, 796 based on Foata normal form. 32/6442 useless extension candidates. Maximal degree in co-relation 60183. Up to 5623 conditions per place. [2024-06-28 04:02:40,724 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 461 selfloop transitions, 143 changer transitions 0/607 dead transitions. [2024-06-28 04:02:40,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 607 transitions, 12151 flow [2024-06-28 04:02:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 04:02:40,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:02:40,726 INFO L175 Difference]: Start difference. First operand has 351 places, 565 transitions, 10657 flow. Second operand 10 states and 170 transitions. [2024-06-28 04:02:40,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 607 transitions, 12151 flow [2024-06-28 04:02:42,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 607 transitions, 11958 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:42,125 INFO L231 Difference]: Finished difference. Result has 355 places, 567 transitions, 10846 flow [2024-06-28 04:02:42,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10464, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10846, PETRI_PLACES=355, PETRI_TRANSITIONS=567} [2024-06-28 04:02:42,125 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-28 04:02:42,125 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 567 transitions, 10846 flow [2024-06-28 04:02:42,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:42,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:42,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:42,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:02:42,126 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:42,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:42,126 INFO L85 PathProgramCache]: Analyzing trace with hash -252656160, now seen corresponding path program 1 times [2024-06-28 04:02:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:42,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42625833] [2024-06-28 04:02:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:42,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:42,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42625833] [2024-06-28 04:02:42,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42625833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:42,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:42,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:42,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535687741] [2024-06-28 04:02:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:42,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:42,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:42,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:42,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:42,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:42,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 567 transitions, 10846 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:42,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:42,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:42,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:44,543 INFO L124 PetriNetUnfolderBase]: 4377/6653 cut-off events. [2024-06-28 04:02:44,544 INFO L125 PetriNetUnfolderBase]: For 496416/496424 co-relation queries the response was YES. [2024-06-28 04:02:44,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63644 conditions, 6653 events. 4377/6653 cut-off events. For 496416/496424 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37423 event pairs, 812 based on Foata normal form. 24/6675 useless extension candidates. Maximal degree in co-relation 63481. Up to 5388 conditions per place. [2024-06-28 04:02:44,648 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 468 selfloop transitions, 144 changer transitions 0/615 dead transitions. [2024-06-28 04:02:44,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 615 transitions, 12658 flow [2024-06-28 04:02:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:02:44,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 04:02:44,649 INFO L175 Difference]: Start difference. First operand has 355 places, 567 transitions, 10846 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:02:44,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 615 transitions, 12658 flow [2024-06-28 04:02:46,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 615 transitions, 12316 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:46,219 INFO L231 Difference]: Finished difference. Result has 357 places, 569 transitions, 10876 flow [2024-06-28 04:02:46,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10504, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10876, PETRI_PLACES=357, PETRI_TRANSITIONS=569} [2024-06-28 04:02:46,220 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 04:02:46,220 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 569 transitions, 10876 flow [2024-06-28 04:02:46,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:46,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:46,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:46,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:02:46,221 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:46,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash -258377892, now seen corresponding path program 9 times [2024-06-28 04:02:46,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656613800] [2024-06-28 04:02:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:46,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:47,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:47,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656613800] [2024-06-28 04:02:47,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656613800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:47,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:47,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:47,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605333936] [2024-06-28 04:02:47,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:47,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:47,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:47,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:47,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:47,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:47,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 569 transitions, 10876 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:47,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:47,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:47,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:48,861 INFO L124 PetriNetUnfolderBase]: 4369/6641 cut-off events. [2024-06-28 04:02:48,862 INFO L125 PetriNetUnfolderBase]: For 477982/477990 co-relation queries the response was YES. [2024-06-28 04:02:49,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63101 conditions, 6641 events. 4369/6641 cut-off events. For 477982/477990 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37502 event pairs, 865 based on Foata normal form. 12/6651 useless extension candidates. Maximal degree in co-relation 62937. Up to 6131 conditions per place. [2024-06-28 04:02:49,135 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 477 selfloop transitions, 127 changer transitions 0/607 dead transitions. [2024-06-28 04:02:49,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 607 transitions, 12334 flow [2024-06-28 04:02:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 04:02:49,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:02:49,137 INFO L175 Difference]: Start difference. First operand has 357 places, 569 transitions, 10876 flow. Second operand 10 states and 165 transitions. [2024-06-28 04:02:49,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 607 transitions, 12334 flow [2024-06-28 04:02:50,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 607 transitions, 12118 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:50,527 INFO L231 Difference]: Finished difference. Result has 361 places, 571 transitions, 11012 flow [2024-06-28 04:02:50,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10666, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11012, PETRI_PLACES=361, PETRI_TRANSITIONS=571} [2024-06-28 04:02:50,527 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 04:02:50,528 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 571 transitions, 11012 flow [2024-06-28 04:02:50,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:50,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:50,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:50,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:02:50,528 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:50,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:50,529 INFO L85 PathProgramCache]: Analyzing trace with hash -258381612, now seen corresponding path program 10 times [2024-06-28 04:02:50,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:50,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299860855] [2024-06-28 04:02:50,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:50,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:51,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:51,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299860855] [2024-06-28 04:02:51,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299860855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:51,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:51,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:51,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752037202] [2024-06-28 04:02:51,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:51,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:51,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:51,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:51,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 571 transitions, 11012 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:51,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:51,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:51,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:53,209 INFO L124 PetriNetUnfolderBase]: 4386/6668 cut-off events. [2024-06-28 04:02:53,209 INFO L125 PetriNetUnfolderBase]: For 489730/489738 co-relation queries the response was YES. [2024-06-28 04:02:53,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63812 conditions, 6668 events. 4386/6668 cut-off events. For 489730/489738 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 37657 event pairs, 871 based on Foata normal form. 12/6678 useless extension candidates. Maximal degree in co-relation 63646. Up to 6093 conditions per place. [2024-06-28 04:02:53,310 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 478 selfloop transitions, 131 changer transitions 0/612 dead transitions. [2024-06-28 04:02:53,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 612 transitions, 12532 flow [2024-06-28 04:02:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 04:02:53,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:02:53,311 INFO L175 Difference]: Start difference. First operand has 361 places, 571 transitions, 11012 flow. Second operand 10 states and 165 transitions. [2024-06-28 04:02:53,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 612 transitions, 12532 flow [2024-06-28 04:02:54,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 612 transitions, 12200 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:54,908 INFO L231 Difference]: Finished difference. Result has 364 places, 576 transitions, 11115 flow [2024-06-28 04:02:54,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10680, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11115, PETRI_PLACES=364, PETRI_TRANSITIONS=576} [2024-06-28 04:02:54,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-28 04:02:54,911 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 576 transitions, 11115 flow [2024-06-28 04:02:54,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:54,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:54,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:54,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:02:54,912 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:54,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash 641447828, now seen corresponding path program 11 times [2024-06-28 04:02:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:54,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430657087] [2024-06-28 04:02:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:55,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:55,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430657087] [2024-06-28 04:02:55,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430657087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:55,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:55,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469368203] [2024-06-28 04:02:55,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:55,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:55,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:55,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:55,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:02:55,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 576 transitions, 11115 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:55,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:55,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:02:55,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:57,603 INFO L124 PetriNetUnfolderBase]: 4436/6747 cut-off events. [2024-06-28 04:02:57,603 INFO L125 PetriNetUnfolderBase]: For 504847/504859 co-relation queries the response was YES. [2024-06-28 04:02:57,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64621 conditions, 6747 events. 4436/6747 cut-off events. For 504847/504859 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 38344 event pairs, 869 based on Foata normal form. 12/6747 useless extension candidates. Maximal degree in co-relation 64453. Up to 6421 conditions per place. [2024-06-28 04:02:57,712 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 547 selfloop transitions, 72 changer transitions 0/622 dead transitions. [2024-06-28 04:02:57,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 622 transitions, 12732 flow [2024-06-28 04:02:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 04:02:57,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 04:02:57,713 INFO L175 Difference]: Start difference. First operand has 364 places, 576 transitions, 11115 flow. Second operand 10 states and 155 transitions. [2024-06-28 04:02:57,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 622 transitions, 12732 flow [2024-06-28 04:02:59,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 622 transitions, 12452 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:59,614 INFO L231 Difference]: Finished difference. Result has 370 places, 592 transitions, 11316 flow [2024-06-28 04:02:59,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10835, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11316, PETRI_PLACES=370, PETRI_TRANSITIONS=592} [2024-06-28 04:02:59,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-28 04:02:59,615 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 592 transitions, 11316 flow [2024-06-28 04:02:59,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:59,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:59,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:59,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:02:59,616 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:59,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash 726438668, now seen corresponding path program 12 times [2024-06-28 04:02:59,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:59,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745594911] [2024-06-28 04:02:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:59,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:00,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:00,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745594911] [2024-06-28 04:03:00,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745594911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:00,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:00,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:00,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208481183] [2024-06-28 04:03:00,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:00,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:00,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:00,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:00,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:00,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:00,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 592 transitions, 11316 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:00,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:00,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:00,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:02,509 INFO L124 PetriNetUnfolderBase]: 4478/6823 cut-off events. [2024-06-28 04:03:02,510 INFO L125 PetriNetUnfolderBase]: For 530363/530367 co-relation queries the response was YES. [2024-06-28 04:03:02,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66197 conditions, 6823 events. 4478/6823 cut-off events. For 530363/530367 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 39075 event pairs, 1096 based on Foata normal form. 8/6829 useless extension candidates. Maximal degree in co-relation 66025. Up to 6108 conditions per place. [2024-06-28 04:03:02,619 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 501 selfloop transitions, 128 changer transitions 0/632 dead transitions. [2024-06-28 04:03:02,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 632 transitions, 13178 flow [2024-06-28 04:03:02,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:03:02,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 04:03:02,621 INFO L175 Difference]: Start difference. First operand has 370 places, 592 transitions, 11316 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:03:02,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 632 transitions, 13178 flow [2024-06-28 04:03:04,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 632 transitions, 13015 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-28 04:03:04,612 INFO L231 Difference]: Finished difference. Result has 376 places, 597 transitions, 11684 flow [2024-06-28 04:03:04,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11153, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11684, PETRI_PLACES=376, PETRI_TRANSITIONS=597} [2024-06-28 04:03:04,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-28 04:03:04,613 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 597 transitions, 11684 flow [2024-06-28 04:03:04,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:04,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:04,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:04,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:03:04,614 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:04,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:04,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1365925994, now seen corresponding path program 13 times [2024-06-28 04:03:04,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:04,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955709518] [2024-06-28 04:03:04,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:04,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:05,483 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 04:03:05,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:05,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955709518] [2024-06-28 04:03:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955709518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:05,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:05,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433798434] [2024-06-28 04:03:05,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:05,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:05,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:05,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:05,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:05,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:05,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 597 transitions, 11684 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:05,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:05,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:05,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:07,397 INFO L124 PetriNetUnfolderBase]: 4470/6815 cut-off events. [2024-06-28 04:03:07,397 INFO L125 PetriNetUnfolderBase]: For 538118/538122 co-relation queries the response was YES. [2024-06-28 04:03:07,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66450 conditions, 6815 events. 4470/6815 cut-off events. For 538118/538122 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 39007 event pairs, 1116 based on Foata normal form. 8/6821 useless extension candidates. Maximal degree in co-relation 66275. Up to 6278 conditions per place. [2024-06-28 04:03:07,500 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 503 selfloop transitions, 125 changer transitions 0/631 dead transitions. [2024-06-28 04:03:07,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 631 transitions, 13135 flow [2024-06-28 04:03:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 04:03:07,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-28 04:03:07,501 INFO L175 Difference]: Start difference. First operand has 376 places, 597 transitions, 11684 flow. Second operand 9 states and 146 transitions. [2024-06-28 04:03:07,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 631 transitions, 13135 flow [2024-06-28 04:03:09,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 631 transitions, 12789 flow, removed 108 selfloop flow, removed 6 redundant places. [2024-06-28 04:03:09,531 INFO L231 Difference]: Finished difference. Result has 379 places, 598 transitions, 11661 flow [2024-06-28 04:03:09,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11372, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11661, PETRI_PLACES=379, PETRI_TRANSITIONS=598} [2024-06-28 04:03:09,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-28 04:03:09,532 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 598 transitions, 11661 flow [2024-06-28 04:03:09,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:09,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:09,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:09,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:03:09,532 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:09,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:09,533 INFO L85 PathProgramCache]: Analyzing trace with hash -129301766, now seen corresponding path program 2 times [2024-06-28 04:03:09,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:09,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999645575] [2024-06-28 04:03:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:09,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:10,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:10,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999645575] [2024-06-28 04:03:10,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999645575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:10,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:10,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:10,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973062558] [2024-06-28 04:03:10,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:10,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:10,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:10,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:10,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:10,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:10,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 598 transitions, 11661 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:10,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:10,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:10,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:12,331 INFO L124 PetriNetUnfolderBase]: 4740/7230 cut-off events. [2024-06-28 04:03:12,331 INFO L125 PetriNetUnfolderBase]: For 567135/567143 co-relation queries the response was YES. [2024-06-28 04:03:12,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68929 conditions, 7230 events. 4740/7230 cut-off events. For 567135/567143 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 41870 event pairs, 909 based on Foata normal form. 28/7256 useless extension candidates. Maximal degree in co-relation 68753. Up to 6488 conditions per place. [2024-06-28 04:03:12,436 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 547 selfloop transitions, 109 changer transitions 0/659 dead transitions. [2024-06-28 04:03:12,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 659 transitions, 13500 flow [2024-06-28 04:03:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:12,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 04:03:12,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:03:12,437 INFO L175 Difference]: Start difference. First operand has 379 places, 598 transitions, 11661 flow. Second operand 10 states and 165 transitions. [2024-06-28 04:03:12,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 659 transitions, 13500 flow [2024-06-28 04:03:14,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 659 transitions, 13262 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:14,353 INFO L231 Difference]: Finished difference. Result has 383 places, 617 transitions, 12029 flow [2024-06-28 04:03:14,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11431, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12029, PETRI_PLACES=383, PETRI_TRANSITIONS=617} [2024-06-28 04:03:14,354 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 04:03:14,354 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 617 transitions, 12029 flow [2024-06-28 04:03:14,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:14,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:14,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:14,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:03:14,354 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:14,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash 9076282, now seen corresponding path program 14 times [2024-06-28 04:03:14,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090646956] [2024-06-28 04:03:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:15,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:15,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090646956] [2024-06-28 04:03:15,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090646956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:15,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:15,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:15,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042281681] [2024-06-28 04:03:15,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:15,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:15,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:15,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:15,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:15,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:15,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 617 transitions, 12029 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:15,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:15,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:15,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:17,365 INFO L124 PetriNetUnfolderBase]: 4757/7258 cut-off events. [2024-06-28 04:03:17,365 INFO L125 PetriNetUnfolderBase]: For 554058/554062 co-relation queries the response was YES. [2024-06-28 04:03:17,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69860 conditions, 7258 events. 4757/7258 cut-off events. For 554058/554062 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 42038 event pairs, 904 based on Foata normal form. 8/7264 useless extension candidates. Maximal degree in co-relation 69682. Up to 6595 conditions per place. [2024-06-28 04:03:17,468 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 501 selfloop transitions, 147 changer transitions 0/651 dead transitions. [2024-06-28 04:03:17,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 651 transitions, 13579 flow [2024-06-28 04:03:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:17,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:03:17,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 04:03:17,470 INFO L175 Difference]: Start difference. First operand has 383 places, 617 transitions, 12029 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:03:17,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 651 transitions, 13579 flow [2024-06-28 04:03:19,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 651 transitions, 13358 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:19,746 INFO L231 Difference]: Finished difference. Result has 385 places, 619 transitions, 12219 flow [2024-06-28 04:03:19,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11808, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12219, PETRI_PLACES=385, PETRI_TRANSITIONS=619} [2024-06-28 04:03:19,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-28 04:03:19,746 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 619 transitions, 12219 flow [2024-06-28 04:03:19,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:19,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:19,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:19,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:03:19,747 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:19,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash 9072562, now seen corresponding path program 15 times [2024-06-28 04:03:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073737010] [2024-06-28 04:03:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:19,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073737010] [2024-06-28 04:03:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073737010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:20,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:20,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:20,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681385678] [2024-06-28 04:03:20,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:20,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:20,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:20,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 619 transitions, 12219 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:20,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:20,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:20,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:22,766 INFO L124 PetriNetUnfolderBase]: 4910/7506 cut-off events. [2024-06-28 04:03:22,767 INFO L125 PetriNetUnfolderBase]: For 633125/633129 co-relation queries the response was YES. [2024-06-28 04:03:22,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74098 conditions, 7506 events. 4910/7506 cut-off events. For 633125/633129 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 43890 event pairs, 936 based on Foata normal form. 8/7512 useless extension candidates. Maximal degree in co-relation 73919. Up to 6158 conditions per place. [2024-06-28 04:03:22,877 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 480 selfloop transitions, 179 changer transitions 0/662 dead transitions. [2024-06-28 04:03:22,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 662 transitions, 14217 flow [2024-06-28 04:03:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:03:22,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:03:22,882 INFO L175 Difference]: Start difference. First operand has 385 places, 619 transitions, 12219 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:03:22,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 662 transitions, 14217 flow [2024-06-28 04:03:25,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 662 transitions, 13862 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 04:03:25,082 INFO L231 Difference]: Finished difference. Result has 389 places, 624 transitions, 12497 flow [2024-06-28 04:03:25,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11864, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12497, PETRI_PLACES=389, PETRI_TRANSITIONS=624} [2024-06-28 04:03:25,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-28 04:03:25,083 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 624 transitions, 12497 flow [2024-06-28 04:03:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:25,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:25,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:03:25,084 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:25,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1060292622, now seen corresponding path program 3 times [2024-06-28 04:03:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398603564] [2024-06-28 04:03:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:25,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:25,811 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 04:03:25,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398603564] [2024-06-28 04:03:25,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398603564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:25,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:25,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:25,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706350531] [2024-06-28 04:03:25,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:25,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:25,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:25,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:25,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:25,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:25,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 624 transitions, 12497 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:25,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:25,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:25,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:28,090 INFO L124 PetriNetUnfolderBase]: 4985/7631 cut-off events. [2024-06-28 04:03:28,091 INFO L125 PetriNetUnfolderBase]: For 690839/690843 co-relation queries the response was YES. [2024-06-28 04:03:28,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75577 conditions, 7631 events. 4985/7631 cut-off events. For 690839/690843 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 44844 event pairs, 932 based on Foata normal form. 24/7653 useless extension candidates. Maximal degree in co-relation 75396. Up to 6256 conditions per place. [2024-06-28 04:03:28,204 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 471 selfloop transitions, 187 changer transitions 0/661 dead transitions. [2024-06-28 04:03:28,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 661 transitions, 14059 flow [2024-06-28 04:03:28,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:28,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:03:28,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 04:03:28,206 INFO L175 Difference]: Start difference. First operand has 389 places, 624 transitions, 12497 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:03:28,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 661 transitions, 14059 flow [2024-06-28 04:03:30,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 661 transitions, 13729 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:30,650 INFO L231 Difference]: Finished difference. Result has 393 places, 625 transitions, 12622 flow [2024-06-28 04:03:30,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12169, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12622, PETRI_PLACES=393, PETRI_TRANSITIONS=625} [2024-06-28 04:03:30,651 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-28 04:03:30,651 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 625 transitions, 12622 flow [2024-06-28 04:03:30,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:30,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:30,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:03:30,652 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:30,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 14582812, now seen corresponding path program 16 times [2024-06-28 04:03:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:30,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557297845] [2024-06-28 04:03:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:31,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:31,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557297845] [2024-06-28 04:03:31,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557297845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:31,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:31,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:31,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497940553] [2024-06-28 04:03:31,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:31,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:31,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:31,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:31,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:31,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:31,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 625 transitions, 12622 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:31,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:31,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:31,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:33,819 INFO L124 PetriNetUnfolderBase]: 5001/7658 cut-off events. [2024-06-28 04:03:33,820 INFO L125 PetriNetUnfolderBase]: For 647831/647837 co-relation queries the response was YES. [2024-06-28 04:03:33,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74168 conditions, 7658 events. 5001/7658 cut-off events. For 647831/647837 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 45134 event pairs, 967 based on Foata normal form. 28/7674 useless extension candidates. Maximal degree in co-relation 73985. Up to 6899 conditions per place. [2024-06-28 04:03:33,924 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 533 selfloop transitions, 129 changer transitions 0/665 dead transitions. [2024-06-28 04:03:33,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 665 transitions, 14255 flow [2024-06-28 04:03:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 04:03:33,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 04:03:33,926 INFO L175 Difference]: Start difference. First operand has 393 places, 625 transitions, 12622 flow. Second operand 10 states and 165 transitions. [2024-06-28 04:03:33,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 665 transitions, 14255 flow [2024-06-28 04:03:36,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 665 transitions, 13790 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:36,606 INFO L231 Difference]: Finished difference. Result has 396 places, 629 transitions, 12518 flow [2024-06-28 04:03:36,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12179, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12518, PETRI_PLACES=396, PETRI_TRANSITIONS=629} [2024-06-28 04:03:36,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 04:03:36,607 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 629 transitions, 12518 flow [2024-06-28 04:03:36,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:36,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:36,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:36,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:03:36,607 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:36,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 737398510, now seen corresponding path program 4 times [2024-06-28 04:03:36,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:36,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173385271] [2024-06-28 04:03:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:36,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:37,365 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 04:03:37,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173385271] [2024-06-28 04:03:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173385271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:37,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:37,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997556079] [2024-06-28 04:03:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:37,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:37,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 629 transitions, 12518 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:37,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:37,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:37,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:39,791 INFO L124 PetriNetUnfolderBase]: 5120/7860 cut-off events. [2024-06-28 04:03:39,791 INFO L125 PetriNetUnfolderBase]: For 670711/670715 co-relation queries the response was YES. [2024-06-28 04:03:39,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75717 conditions, 7860 events. 5120/7860 cut-off events. For 670711/670715 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 46494 event pairs, 913 based on Foata normal form. 20/7878 useless extension candidates. Maximal degree in co-relation 75533. Up to 5434 conditions per place. [2024-06-28 04:03:39,927 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 462 selfloop transitions, 212 changer transitions 0/677 dead transitions. [2024-06-28 04:03:39,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 677 transitions, 14492 flow [2024-06-28 04:03:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 04:03:39,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275 [2024-06-28 04:03:39,929 INFO L175 Difference]: Start difference. First operand has 396 places, 629 transitions, 12518 flow. Second operand 10 states and 171 transitions. [2024-06-28 04:03:39,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 677 transitions, 14492 flow [2024-06-28 04:03:42,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 677 transitions, 14263 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:42,655 INFO L231 Difference]: Finished difference. Result has 399 places, 631 transitions, 12827 flow [2024-06-28 04:03:42,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12289, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12827, PETRI_PLACES=399, PETRI_TRANSITIONS=631} [2024-06-28 04:03:42,656 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-28 04:03:42,656 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 631 transitions, 12827 flow [2024-06-28 04:03:42,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:42,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:42,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:42,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:03:42,657 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:42,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1114216410, now seen corresponding path program 5 times [2024-06-28 04:03:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:42,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976804122] [2024-06-28 04:03:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:43,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976804122] [2024-06-28 04:03:43,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976804122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:43,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:43,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:43,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748487682] [2024-06-28 04:03:43,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:43,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:43,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:43,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:43,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:43,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 631 transitions, 12827 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:43,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:43,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:43,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:45,543 INFO L124 PetriNetUnfolderBase]: 5314/8180 cut-off events. [2024-06-28 04:03:45,543 INFO L125 PetriNetUnfolderBase]: For 764709/764718 co-relation queries the response was YES. [2024-06-28 04:03:45,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81072 conditions, 8180 events. 5314/8180 cut-off events. For 764709/764718 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 49172 event pairs, 972 based on Foata normal form. 22/8184 useless extension candidates. Maximal degree in co-relation 80887. Up to 6564 conditions per place. [2024-06-28 04:03:45,676 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 459 selfloop transitions, 212 changer transitions 0/674 dead transitions. [2024-06-28 04:03:45,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 674 transitions, 14835 flow [2024-06-28 04:03:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 04:03:45,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 04:03:45,677 INFO L175 Difference]: Start difference. First operand has 399 places, 631 transitions, 12827 flow. Second operand 9 states and 159 transitions. [2024-06-28 04:03:45,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 674 transitions, 14835 flow [2024-06-28 04:03:48,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 674 transitions, 14493 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:48,771 INFO L231 Difference]: Finished difference. Result has 401 places, 633 transitions, 13030 flow [2024-06-28 04:03:48,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12489, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13030, PETRI_PLACES=401, PETRI_TRANSITIONS=633} [2024-06-28 04:03:48,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-28 04:03:48,772 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 633 transitions, 13030 flow [2024-06-28 04:03:48,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:48,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:48,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:48,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:03:48,772 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:48,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1924814800, now seen corresponding path program 6 times [2024-06-28 04:03:48,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:48,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772393534] [2024-06-28 04:03:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:49,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:49,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772393534] [2024-06-28 04:03:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772393534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:49,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:49,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:49,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370060997] [2024-06-28 04:03:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:49,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:49,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:49,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:49,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 633 transitions, 13030 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:49,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:49,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:49,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:51,782 INFO L124 PetriNetUnfolderBase]: 5331/8215 cut-off events. [2024-06-28 04:03:51,782 INFO L125 PetriNetUnfolderBase]: For 752328/752337 co-relation queries the response was YES. [2024-06-28 04:03:51,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80448 conditions, 8215 events. 5331/8215 cut-off events. For 752328/752337 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 49547 event pairs, 991 based on Foata normal form. 30/8227 useless extension candidates. Maximal degree in co-relation 80263. Up to 6923 conditions per place. [2024-06-28 04:03:51,905 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 456 selfloop transitions, 211 changer transitions 0/670 dead transitions. [2024-06-28 04:03:51,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 670 transitions, 14674 flow [2024-06-28 04:03:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:03:51,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:03:51,907 INFO L175 Difference]: Start difference. First operand has 401 places, 633 transitions, 13030 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:03:51,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 670 transitions, 14674 flow [2024-06-28 04:03:54,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 670 transitions, 14351 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:54,378 INFO L231 Difference]: Finished difference. Result has 405 places, 635 transitions, 13254 flow [2024-06-28 04:03:54,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12721, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13254, PETRI_PLACES=405, PETRI_TRANSITIONS=635} [2024-06-28 04:03:54,379 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 04:03:54,379 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 635 transitions, 13254 flow [2024-06-28 04:03:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:54,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:54,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:54,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:03:54,379 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:54,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1123413180, now seen corresponding path program 7 times [2024-06-28 04:03:54,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:54,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072540300] [2024-06-28 04:03:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:54,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:55,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:55,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072540300] [2024-06-28 04:03:55,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072540300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:55,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:55,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765975630] [2024-06-28 04:03:55,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:55,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:55,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:55,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:03:55,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 635 transitions, 13254 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:55,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:55,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:03:55,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:57,365 INFO L124 PetriNetUnfolderBase]: 5475/8455 cut-off events. [2024-06-28 04:03:57,365 INFO L125 PetriNetUnfolderBase]: For 787735/787744 co-relation queries the response was YES. [2024-06-28 04:03:57,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84198 conditions, 8455 events. 5475/8455 cut-off events. For 787735/787744 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 51127 event pairs, 948 based on Foata normal form. 22/8459 useless extension candidates. Maximal degree in co-relation 84011. Up to 4763 conditions per place. [2024-06-28 04:03:57,519 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 433 selfloop transitions, 242 changer transitions 0/678 dead transitions. [2024-06-28 04:03:57,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 678 transitions, 15272 flow [2024-06-28 04:03:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:57,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:03:57,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 04:03:57,521 INFO L175 Difference]: Start difference. First operand has 405 places, 635 transitions, 13254 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:03:57,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 678 transitions, 15272 flow [2024-06-28 04:04:00,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 678 transitions, 14775 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:00,468 INFO L231 Difference]: Finished difference. Result has 407 places, 637 transitions, 13361 flow [2024-06-28 04:04:00,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12757, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13361, PETRI_PLACES=407, PETRI_TRANSITIONS=637} [2024-06-28 04:04:00,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 04:04:00,469 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 637 transitions, 13361 flow [2024-06-28 04:04:00,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:00,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:00,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:00,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:04:00,469 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:00,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1917974186, now seen corresponding path program 17 times [2024-06-28 04:04:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255374105] [2024-06-28 04:04:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:01,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:01,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255374105] [2024-06-28 04:04:01,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255374105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:01,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:01,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735461111] [2024-06-28 04:04:01,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:01,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:01,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:01,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:01,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:01,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 637 transitions, 13361 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:01,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:01,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:01,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:03,754 INFO L124 PetriNetUnfolderBase]: 5492/8482 cut-off events. [2024-06-28 04:04:03,754 INFO L125 PetriNetUnfolderBase]: For 783863/783872 co-relation queries the response was YES. [2024-06-28 04:04:03,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84730 conditions, 8482 events. 5492/8482 cut-off events. For 783863/783872 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 51634 event pairs, 1115 based on Foata normal form. 10/8474 useless extension candidates. Maximal degree in co-relation 84542. Up to 7715 conditions per place. [2024-06-28 04:04:03,896 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 503 selfloop transitions, 163 changer transitions 0/669 dead transitions. [2024-06-28 04:04:03,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 669 transitions, 14955 flow [2024-06-28 04:04:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:04:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:04:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 04:04:03,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-28 04:04:03,897 INFO L175 Difference]: Start difference. First operand has 407 places, 637 transitions, 13361 flow. Second operand 10 states and 159 transitions. [2024-06-28 04:04:03,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 669 transitions, 14955 flow [2024-06-28 04:04:06,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 669 transitions, 14631 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:06,959 INFO L231 Difference]: Finished difference. Result has 412 places, 639 transitions, 13490 flow [2024-06-28 04:04:06,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13045, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13490, PETRI_PLACES=412, PETRI_TRANSITIONS=639} [2024-06-28 04:04:06,959 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-28 04:04:06,960 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 639 transitions, 13490 flow [2024-06-28 04:04:06,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:06,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:06,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:06,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:04:06,961 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:06,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1917977906, now seen corresponding path program 18 times [2024-06-28 04:04:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:06,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639413382] [2024-06-28 04:04:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:06,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:07,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:07,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639413382] [2024-06-28 04:04:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639413382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:07,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680059363] [2024-06-28 04:04:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:07,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:07,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:07,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:07,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 639 transitions, 13490 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:07,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:07,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:07,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:10,055 INFO L124 PetriNetUnfolderBase]: 5484/8470 cut-off events. [2024-06-28 04:04:10,056 INFO L125 PetriNetUnfolderBase]: For 782498/782507 co-relation queries the response was YES. [2024-06-28 04:04:10,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84418 conditions, 8470 events. 5484/8470 cut-off events. For 782498/782507 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 51587 event pairs, 1101 based on Foata normal form. 10/8462 useless extension candidates. Maximal degree in co-relation 84228. Up to 7620 conditions per place. [2024-06-28 04:04:10,201 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 509 selfloop transitions, 166 changer transitions 0/678 dead transitions. [2024-06-28 04:04:10,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 678 transitions, 15580 flow [2024-06-28 04:04:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:10,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:04:10,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:04:10,202 INFO L175 Difference]: Start difference. First operand has 412 places, 639 transitions, 13490 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:04:10,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 678 transitions, 15580 flow [2024-06-28 04:04:13,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 678 transitions, 15146 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 04:04:13,291 INFO L231 Difference]: Finished difference. Result has 414 places, 646 transitions, 13729 flow [2024-06-28 04:04:13,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13056, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13729, PETRI_PLACES=414, PETRI_TRANSITIONS=646} [2024-06-28 04:04:13,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-28 04:04:13,292 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 646 transitions, 13729 flow [2024-06-28 04:04:13,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:13,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:13,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:13,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:04:13,293 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:13,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash -852511156, now seen corresponding path program 19 times [2024-06-28 04:04:13,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:13,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240305617] [2024-06-28 04:04:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:14,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240305617] [2024-06-28 04:04:14,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240305617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:14,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:14,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:14,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67030769] [2024-06-28 04:04:14,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:14,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:14,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:14,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:14,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 646 transitions, 13729 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:14,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:14,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:14,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:16,542 INFO L124 PetriNetUnfolderBase]: 5476/8458 cut-off events. [2024-06-28 04:04:16,542 INFO L125 PetriNetUnfolderBase]: For 787915/787924 co-relation queries the response was YES. [2024-06-28 04:04:16,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84108 conditions, 8458 events. 5476/8458 cut-off events. For 787915/787924 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 51497 event pairs, 1111 based on Foata normal form. 10/8450 useless extension candidates. Maximal degree in co-relation 83916. Up to 7691 conditions per place. [2024-06-28 04:04:16,684 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 516 selfloop transitions, 158 changer transitions 0/677 dead transitions. [2024-06-28 04:04:16,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 677 transitions, 15233 flow [2024-06-28 04:04:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:04:16,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:04:16,686 INFO L175 Difference]: Start difference. First operand has 414 places, 646 transitions, 13729 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:04:16,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 677 transitions, 15233 flow [2024-06-28 04:04:19,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 677 transitions, 14771 flow, removed 142 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:19,828 INFO L231 Difference]: Finished difference. Result has 418 places, 646 transitions, 13590 flow [2024-06-28 04:04:19,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13267, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13590, PETRI_PLACES=418, PETRI_TRANSITIONS=646} [2024-06-28 04:04:19,829 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 04:04:19,829 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 646 transitions, 13590 flow [2024-06-28 04:04:19,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:19,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:19,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:19,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:04:19,830 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:19,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:19,830 INFO L85 PathProgramCache]: Analyzing trace with hash 854636432, now seen corresponding path program 8 times [2024-06-28 04:04:19,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:19,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90741536] [2024-06-28 04:04:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:19,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:20,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90741536] [2024-06-28 04:04:20,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90741536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:20,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:20,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:20,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851342659] [2024-06-28 04:04:20,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:20,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:20,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:20,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:20,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:20,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:20,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 646 transitions, 13590 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:20,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:20,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:20,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:22,907 INFO L124 PetriNetUnfolderBase]: 5551/8583 cut-off events. [2024-06-28 04:04:22,907 INFO L125 PetriNetUnfolderBase]: For 844802/844811 co-relation queries the response was YES. [2024-06-28 04:04:23,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84959 conditions, 8583 events. 5551/8583 cut-off events. For 844802/844811 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 52411 event pairs, 1103 based on Foata normal form. 26/8591 useless extension candidates. Maximal degree in co-relation 84765. Up to 7291 conditions per place. [2024-06-28 04:04:23,042 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 486 selfloop transitions, 193 changer transitions 0/682 dead transitions. [2024-06-28 04:04:23,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 682 transitions, 15200 flow [2024-06-28 04:04:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 04:04:23,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 04:04:23,043 INFO L175 Difference]: Start difference. First operand has 418 places, 646 transitions, 13590 flow. Second operand 9 states and 158 transitions. [2024-06-28 04:04:23,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 682 transitions, 15200 flow [2024-06-28 04:04:26,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 682 transitions, 14869 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:26,046 INFO L231 Difference]: Finished difference. Result has 420 places, 647 transitions, 13711 flow [2024-06-28 04:04:26,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13261, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13711, PETRI_PLACES=420, PETRI_TRANSITIONS=647} [2024-06-28 04:04:26,047 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-28 04:04:26,048 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 647 transitions, 13711 flow [2024-06-28 04:04:26,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:26,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:26,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:26,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:04:26,048 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:26,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:26,049 INFO L85 PathProgramCache]: Analyzing trace with hash -852295954, now seen corresponding path program 9 times [2024-06-28 04:04:26,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:26,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485428530] [2024-06-28 04:04:26,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:26,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:26,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:26,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485428530] [2024-06-28 04:04:26,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485428530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:26,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:26,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:26,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559213279] [2024-06-28 04:04:26,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:26,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:26,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:26,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:26,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 647 transitions, 13711 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:26,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:26,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:26,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:29,232 INFO L124 PetriNetUnfolderBase]: 5559/8603 cut-off events. [2024-06-28 04:04:29,232 INFO L125 PetriNetUnfolderBase]: For 832701/832710 co-relation queries the response was YES. [2024-06-28 04:04:29,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84846 conditions, 8603 events. 5559/8603 cut-off events. For 832701/832710 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 52614 event pairs, 1095 based on Foata normal form. 22/8607 useless extension candidates. Maximal degree in co-relation 84651. Up to 6943 conditions per place. [2024-06-28 04:04:29,361 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 490 selfloop transitions, 195 changer transitions 0/688 dead transitions. [2024-06-28 04:04:29,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 688 transitions, 15661 flow [2024-06-28 04:04:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:29,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:04:29,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 04:04:29,362 INFO L175 Difference]: Start difference. First operand has 420 places, 647 transitions, 13711 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:04:29,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 688 transitions, 15661 flow [2024-06-28 04:04:32,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 688 transitions, 15230 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 04:04:32,232 INFO L231 Difference]: Finished difference. Result has 421 places, 648 transitions, 13734 flow [2024-06-28 04:04:32,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13284, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13734, PETRI_PLACES=421, PETRI_TRANSITIONS=648} [2024-06-28 04:04:32,233 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-28 04:04:32,233 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 648 transitions, 13734 flow [2024-06-28 04:04:32,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:32,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:32,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:32,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:04:32,234 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 04:04:32,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:32,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1054015478, now seen corresponding path program 1 times [2024-06-28 04:04:32,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:32,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594612268] [2024-06-28 04:04:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:32,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:32,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:32,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594612268] [2024-06-28 04:04:32,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594612268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:32,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:32,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:32,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8039682] [2024-06-28 04:04:32,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:32,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:32,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:32,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:32,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:32,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:32,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 648 transitions, 13734 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:32,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:32,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:32,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:35,159 INFO L124 PetriNetUnfolderBase]: 5564/8623 cut-off events. [2024-06-28 04:04:35,159 INFO L125 PetriNetUnfolderBase]: For 794828/794828 co-relation queries the response was YES. [2024-06-28 04:04:35,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84649 conditions, 8623 events. 5564/8623 cut-off events. For 794828/794828 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 53208 event pairs, 2013 based on Foata normal form. 1/8622 useless extension candidates. Maximal degree in co-relation 84454. Up to 8537 conditions per place. [2024-06-28 04:04:35,324 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 645 selfloop transitions, 22 changer transitions 0/670 dead transitions. [2024-06-28 04:04:35,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 670 transitions, 15518 flow [2024-06-28 04:04:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 04:04:35,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-06-28 04:04:35,326 INFO L175 Difference]: Start difference. First operand has 421 places, 648 transitions, 13734 flow. Second operand 7 states and 109 transitions. [2024-06-28 04:04:35,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 670 transitions, 15518 flow [2024-06-28 04:04:38,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 670 transitions, 14706 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:38,760 INFO L231 Difference]: Finished difference. Result has 419 places, 654 transitions, 13214 flow [2024-06-28 04:04:38,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12922, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13214, PETRI_PLACES=419, PETRI_TRANSITIONS=654} [2024-06-28 04:04:38,761 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-28 04:04:38,761 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 654 transitions, 13214 flow [2024-06-28 04:04:38,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:38,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:38,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:38,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:04:38,762 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 04:04:38,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1053895322, now seen corresponding path program 1 times [2024-06-28 04:04:38,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841329596] [2024-06-28 04:04:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:39,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841329596] [2024-06-28 04:04:39,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841329596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:39,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:39,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:39,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64653196] [2024-06-28 04:04:39,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:39,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:39,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:39,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:39,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:39,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 654 transitions, 13214 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:39,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:39,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:41,570 INFO L124 PetriNetUnfolderBase]: 5614/8686 cut-off events. [2024-06-28 04:04:41,570 INFO L125 PetriNetUnfolderBase]: For 801124/801136 co-relation queries the response was YES. [2024-06-28 04:04:41,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82746 conditions, 8686 events. 5614/8686 cut-off events. For 801124/801136 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 53454 event pairs, 1615 based on Foata normal form. 12/8691 useless extension candidates. Maximal degree in co-relation 82552. Up to 8453 conditions per place. [2024-06-28 04:04:41,721 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 621 selfloop transitions, 63 changer transitions 0/687 dead transitions. [2024-06-28 04:04:41,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 687 transitions, 15023 flow [2024-06-28 04:04:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 04:04:41,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:04:41,723 INFO L175 Difference]: Start difference. First operand has 419 places, 654 transitions, 13214 flow. Second operand 7 states and 115 transitions. [2024-06-28 04:04:41,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 687 transitions, 15023 flow [2024-06-28 04:04:45,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 687 transitions, 14876 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 04:04:45,337 INFO L231 Difference]: Finished difference. Result has 424 places, 670 transitions, 13421 flow [2024-06-28 04:04:45,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13070, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13421, PETRI_PLACES=424, PETRI_TRANSITIONS=670} [2024-06-28 04:04:45,338 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-28 04:04:45,339 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 670 transitions, 13421 flow [2024-06-28 04:04:45,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:45,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:45,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:45,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:04:45,339 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:45,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1053895508, now seen corresponding path program 2 times [2024-06-28 04:04:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:45,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389821437] [2024-06-28 04:04:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:45,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389821437] [2024-06-28 04:04:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389821437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:45,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:45,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242850666] [2024-06-28 04:04:45,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:45,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:45,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:45,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:45,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:45,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 670 transitions, 13421 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:45,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:45,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:45,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:48,376 INFO L124 PetriNetUnfolderBase]: 5619/8699 cut-off events. [2024-06-28 04:04:48,376 INFO L125 PetriNetUnfolderBase]: For 811742/811742 co-relation queries the response was YES. [2024-06-28 04:04:48,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83223 conditions, 8699 events. 5619/8699 cut-off events. For 811742/811742 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 53646 event pairs, 2016 based on Foata normal form. 1/8698 useless extension candidates. Maximal degree in co-relation 83026. Up to 8626 conditions per place. [2024-06-28 04:04:48,525 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 663 selfloop transitions, 20 changer transitions 0/686 dead transitions. [2024-06-28 04:04:48,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 686 transitions, 14956 flow [2024-06-28 04:04:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 04:04:48,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 04:04:48,526 INFO L175 Difference]: Start difference. First operand has 424 places, 670 transitions, 13421 flow. Second operand 7 states and 104 transitions. [2024-06-28 04:04:48,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 686 transitions, 14956 flow [2024-06-28 04:04:52,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 686 transitions, 14865 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 04:04:52,157 INFO L231 Difference]: Finished difference. Result has 428 places, 674 transitions, 13505 flow [2024-06-28 04:04:52,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13330, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13505, PETRI_PLACES=428, PETRI_TRANSITIONS=674} [2024-06-28 04:04:52,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-28 04:04:52,158 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 674 transitions, 13505 flow [2024-06-28 04:04:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:52,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:52,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:52,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:04:52,159 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:52,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:52,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1380816956, now seen corresponding path program 2 times [2024-06-28 04:04:52,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:52,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718403854] [2024-06-28 04:04:52,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:52,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:52,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718403854] [2024-06-28 04:04:52,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718403854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:52,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:52,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:52,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057959174] [2024-06-28 04:04:52,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:52,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:52,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:52,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:52,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:52,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 674 transitions, 13505 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:52,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:52,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:52,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:55,116 INFO L124 PetriNetUnfolderBase]: 5639/8720 cut-off events. [2024-06-28 04:04:55,117 INFO L125 PetriNetUnfolderBase]: For 832041/832053 co-relation queries the response was YES. [2024-06-28 04:04:55,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83434 conditions, 8720 events. 5639/8720 cut-off events. For 832041/832053 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 53667 event pairs, 1613 based on Foata normal form. 12/8726 useless extension candidates. Maximal degree in co-relation 83236. Up to 8476 conditions per place. [2024-06-28 04:04:55,259 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 623 selfloop transitions, 66 changer transitions 0/692 dead transitions. [2024-06-28 04:04:55,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 692 transitions, 15159 flow [2024-06-28 04:04:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 04:04:55,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 04:04:55,261 INFO L175 Difference]: Start difference. First operand has 428 places, 674 transitions, 13505 flow. Second operand 6 states and 101 transitions. [2024-06-28 04:04:55,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 692 transitions, 15159 flow [2024-06-28 04:04:59,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 692 transitions, 15023 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:59,069 INFO L231 Difference]: Finished difference. Result has 430 places, 678 transitions, 13571 flow [2024-06-28 04:04:59,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13369, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13571, PETRI_PLACES=430, PETRI_TRANSITIONS=678} [2024-06-28 04:04:59,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 389 predicate places. [2024-06-28 04:04:59,070 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 678 transitions, 13571 flow [2024-06-28 04:04:59,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:59,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:59,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:59,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:04:59,071 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:59,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:59,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1380817142, now seen corresponding path program 3 times [2024-06-28 04:04:59,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:59,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457495041] [2024-06-28 04:04:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:59,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:59,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:59,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457495041] [2024-06-28 04:04:59,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457495041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:59,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:59,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481695399] [2024-06-28 04:04:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:59,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:04:59,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 678 transitions, 13571 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:59,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:59,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:04:59,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:01,890 INFO L124 PetriNetUnfolderBase]: 5636/8723 cut-off events. [2024-06-28 04:05:01,890 INFO L125 PetriNetUnfolderBase]: For 838518/838518 co-relation queries the response was YES. [2024-06-28 04:05:02,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83647 conditions, 8723 events. 5636/8723 cut-off events. For 838518/838518 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 53741 event pairs, 2018 based on Foata normal form. 1/8722 useless extension candidates. Maximal degree in co-relation 83448. Up to 8644 conditions per place. [2024-06-28 04:05:02,051 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 669 selfloop transitions, 20 changer transitions 0/692 dead transitions. [2024-06-28 04:05:02,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 692 transitions, 15009 flow [2024-06-28 04:05:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:05:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:05:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 04:05:02,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-28 04:05:02,052 INFO L175 Difference]: Start difference. First operand has 430 places, 678 transitions, 13571 flow. Second operand 6 states and 97 transitions. [2024-06-28 04:05:02,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 692 transitions, 15009 flow [2024-06-28 04:05:06,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 692 transitions, 14835 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-28 04:05:06,053 INFO L231 Difference]: Finished difference. Result has 433 places, 678 transitions, 13447 flow [2024-06-28 04:05:06,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13397, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13447, PETRI_PLACES=433, PETRI_TRANSITIONS=678} [2024-06-28 04:05:06,054 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 04:05:06,054 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 678 transitions, 13447 flow [2024-06-28 04:05:06,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:06,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:06,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:05:06,055 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:06,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1096933316, now seen corresponding path program 3 times [2024-06-28 04:05:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278937049] [2024-06-28 04:05:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:06,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278937049] [2024-06-28 04:05:06,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278937049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:06,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:06,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:05:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227675204] [2024-06-28 04:05:06,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:06,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:05:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:05:06,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:05:06,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:05:06,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 678 transitions, 13447 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:06,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:06,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:05:06,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:08,790 INFO L124 PetriNetUnfolderBase]: 5613/8680 cut-off events. [2024-06-28 04:05:08,790 INFO L125 PetriNetUnfolderBase]: For 828655/828667 co-relation queries the response was YES. [2024-06-28 04:05:08,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82859 conditions, 8680 events. 5613/8680 cut-off events. For 828655/828667 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 53310 event pairs, 1628 based on Foata normal form. 12/8686 useless extension candidates. Maximal degree in co-relation 82659. Up to 8577 conditions per place. [2024-06-28 04:05:08,939 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 654 selfloop transitions, 30 changer transitions 0/687 dead transitions. [2024-06-28 04:05:08,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 687 transitions, 14855 flow [2024-06-28 04:05:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:05:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:05:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-06-28 04:05:08,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 04:05:08,940 INFO L175 Difference]: Start difference. First operand has 433 places, 678 transitions, 13447 flow. Second operand 6 states and 94 transitions. [2024-06-28 04:05:08,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 687 transitions, 14855 flow [2024-06-28 04:05:13,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 687 transitions, 14801 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:13,160 INFO L231 Difference]: Finished difference. Result has 434 places, 678 transitions, 13460 flow [2024-06-28 04:05:13,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13393, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13460, PETRI_PLACES=434, PETRI_TRANSITIONS=678} [2024-06-28 04:05:13,161 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-28 04:05:13,161 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 678 transitions, 13460 flow [2024-06-28 04:05:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:13,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:13,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:05:13,161 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:13,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1380570878, now seen corresponding path program 1 times [2024-06-28 04:05:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372288128] [2024-06-28 04:05:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:14,001 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 04:05:14,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372288128] [2024-06-28 04:05:14,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372288128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:14,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:14,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:05:14,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641361772] [2024-06-28 04:05:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:14,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:05:14,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:05:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:05:14,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:05:14,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 678 transitions, 13460 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:14,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:14,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:05:14,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:16,406 INFO L124 PetriNetUnfolderBase]: 5616/8685 cut-off events. [2024-06-28 04:05:16,406 INFO L125 PetriNetUnfolderBase]: For 839893/839905 co-relation queries the response was YES. [2024-06-28 04:05:16,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83015 conditions, 8685 events. 5616/8685 cut-off events. For 839893/839905 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 53330 event pairs, 1602 based on Foata normal form. 12/8691 useless extension candidates. Maximal degree in co-relation 82814. Up to 8571 conditions per place. [2024-06-28 04:05:16,552 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 653 selfloop transitions, 34 changer transitions 0/690 dead transitions. [2024-06-28 04:05:16,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 690 transitions, 14932 flow [2024-06-28 04:05:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:05:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:05:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-28 04:05:16,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:05:16,553 INFO L175 Difference]: Start difference. First operand has 434 places, 678 transitions, 13460 flow. Second operand 6 states and 95 transitions. [2024-06-28 04:05:16,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 690 transitions, 14932 flow [2024-06-28 04:05:20,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 690 transitions, 14768 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:20,857 INFO L231 Difference]: Finished difference. Result has 434 places, 681 transitions, 13444 flow [2024-06-28 04:05:20,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13296, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13444, PETRI_PLACES=434, PETRI_TRANSITIONS=681} [2024-06-28 04:05:20,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-28 04:05:20,858 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 681 transitions, 13444 flow [2024-06-28 04:05:20,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:20,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:20,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:20,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:05:20,859 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:20,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -143602019, now seen corresponding path program 1 times [2024-06-28 04:05:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486823582] [2024-06-28 04:05:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:21,726 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 04:05:21,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486823582] [2024-06-28 04:05:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486823582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:21,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:05:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035165076] [2024-06-28 04:05:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:21,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:05:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:21,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:05:21,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:05:21,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:05:21,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 681 transitions, 13444 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:21,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:21,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:05:21,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:24,265 INFO L124 PetriNetUnfolderBase]: 5657/8759 cut-off events. [2024-06-28 04:05:24,265 INFO L125 PetriNetUnfolderBase]: For 887533/887539 co-relation queries the response was YES. [2024-06-28 04:05:24,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83843 conditions, 8759 events. 5657/8759 cut-off events. For 887533/887539 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 53831 event pairs, 1193 based on Foata normal form. 18/8775 useless extension candidates. Maximal degree in co-relation 83642. Up to 8248 conditions per place. [2024-06-28 04:05:24,425 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 638 selfloop transitions, 86 changer transitions 0/727 dead transitions. [2024-06-28 04:05:24,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 727 transitions, 15124 flow [2024-06-28 04:05:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:05:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:05:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 04:05:24,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-06-28 04:05:24,426 INFO L175 Difference]: Start difference. First operand has 434 places, 681 transitions, 13444 flow. Second operand 11 states and 174 transitions. [2024-06-28 04:05:24,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 727 transitions, 15124 flow [2024-06-28 04:05:28,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 727 transitions, 14998 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 04:05:28,157 INFO L231 Difference]: Finished difference. Result has 441 places, 682 transitions, 13557 flow [2024-06-28 04:05:28,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13318, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13557, PETRI_PLACES=441, PETRI_TRANSITIONS=682} [2024-06-28 04:05:28,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-28 04:05:28,158 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 682 transitions, 13557 flow [2024-06-28 04:05:28,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:28,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:28,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:05:28,159 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:28,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1782697741, now seen corresponding path program 2 times [2024-06-28 04:05:28,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:28,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127046324] [2024-06-28 04:05:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:28,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:28,981 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 04:05:28,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127046324] [2024-06-28 04:05:28,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127046324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:28,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:28,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430047518] [2024-06-28 04:05:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:28,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:28,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:29,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:05:29,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 682 transitions, 13557 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:29,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:29,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:05:29,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:31,519 INFO L124 PetriNetUnfolderBase]: 5725/8867 cut-off events. [2024-06-28 04:05:31,519 INFO L125 PetriNetUnfolderBase]: For 910971/910975 co-relation queries the response was YES. [2024-06-28 04:05:31,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85236 conditions, 8867 events. 5725/8867 cut-off events. For 910971/910975 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 54945 event pairs, 1074 based on Foata normal form. 16/8881 useless extension candidates. Maximal degree in co-relation 85034. Up to 8264 conditions per place. [2024-06-28 04:05:31,674 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 627 selfloop transitions, 93 changer transitions 0/723 dead transitions. [2024-06-28 04:05:31,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 723 transitions, 15269 flow [2024-06-28 04:05:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 04:05:31,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 04:05:31,676 INFO L175 Difference]: Start difference. First operand has 441 places, 682 transitions, 13557 flow. Second operand 10 states and 161 transitions. [2024-06-28 04:05:31,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 723 transitions, 15269 flow [2024-06-28 04:05:35,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 723 transitions, 15003 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 04:05:35,335 INFO L231 Difference]: Finished difference. Result has 442 places, 684 transitions, 13613 flow [2024-06-28 04:05:35,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13342, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13613, PETRI_PLACES=442, PETRI_TRANSITIONS=684} [2024-06-28 04:05:35,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-28 04:05:35,336 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 684 transitions, 13613 flow [2024-06-28 04:05:35,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:35,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:35,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:35,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:05:35,337 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:35,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:35,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1373052323, now seen corresponding path program 3 times [2024-06-28 04:05:35,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:35,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923872808] [2024-06-28 04:05:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:35,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:36,186 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 04:05:36,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923872808] [2024-06-28 04:05:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923872808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:36,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850883411] [2024-06-28 04:05:36,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:36,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:36,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:36,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:05:36,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 684 transitions, 13613 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:36,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:36,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:05:36,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:38,801 INFO L124 PetriNetUnfolderBase]: 5766/8939 cut-off events. [2024-06-28 04:05:38,801 INFO L125 PetriNetUnfolderBase]: For 921886/921890 co-relation queries the response was YES. [2024-06-28 04:05:38,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85532 conditions, 8939 events. 5766/8939 cut-off events. For 921886/921890 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 55306 event pairs, 1187 based on Foata normal form. 16/8953 useless extension candidates. Maximal degree in co-relation 85329. Up to 8028 conditions per place. [2024-06-28 04:05:38,963 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 566 selfloop transitions, 154 changer transitions 0/723 dead transitions. [2024-06-28 04:05:38,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 723 transitions, 15271 flow [2024-06-28 04:05:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 04:05:38,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 04:05:38,964 INFO L175 Difference]: Start difference. First operand has 442 places, 684 transitions, 13613 flow. Second operand 10 states and 164 transitions. [2024-06-28 04:05:38,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 723 transitions, 15271 flow [2024-06-28 04:05:43,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 723 transitions, 15046 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 04:05:43,044 INFO L231 Difference]: Finished difference. Result has 444 places, 685 transitions, 13767 flow [2024-06-28 04:05:43,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13388, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13767, PETRI_PLACES=444, PETRI_TRANSITIONS=685} [2024-06-28 04:05:43,045 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-28 04:05:43,045 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 685 transitions, 13767 flow [2024-06-28 04:05:43,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:43,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:43,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:43,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:05:43,046 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:43,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1373167643, now seen corresponding path program 4 times [2024-06-28 04:05:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429673221] [2024-06-28 04:05:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:43,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429673221] [2024-06-28 04:05:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429673221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:43,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:43,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:43,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959799345] [2024-06-28 04:05:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:43,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:44,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:05:44,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 685 transitions, 13767 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:44,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:44,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:05:44,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:46,556 INFO L124 PetriNetUnfolderBase]: 5746/8907 cut-off events. [2024-06-28 04:05:46,556 INFO L125 PetriNetUnfolderBase]: For 904266/904270 co-relation queries the response was YES. [2024-06-28 04:05:46,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84663 conditions, 8907 events. 5746/8907 cut-off events. For 904266/904270 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 55052 event pairs, 1177 based on Foata normal form. 16/8921 useless extension candidates. Maximal degree in co-relation 84459. Up to 8128 conditions per place. [2024-06-28 04:05:46,714 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 568 selfloop transitions, 152 changer transitions 0/723 dead transitions. [2024-06-28 04:05:46,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 723 transitions, 15373 flow [2024-06-28 04:05:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 04:05:46,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 04:05:46,716 INFO L175 Difference]: Start difference. First operand has 444 places, 685 transitions, 13767 flow. Second operand 10 states and 164 transitions. [2024-06-28 04:05:46,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 723 transitions, 15373 flow [2024-06-28 04:05:50,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 723 transitions, 15008 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 04:05:50,798 INFO L231 Difference]: Finished difference. Result has 446 places, 685 transitions, 13720 flow [2024-06-28 04:05:50,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13402, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13720, PETRI_PLACES=446, PETRI_TRANSITIONS=685} [2024-06-28 04:05:50,806 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-28 04:05:50,806 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 685 transitions, 13720 flow [2024-06-28 04:05:50,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:50,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:50,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:50,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:05:50,807 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 04:05:50,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:50,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1228694214, now seen corresponding path program 1 times [2024-06-28 04:05:50,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:50,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866262776] [2024-06-28 04:05:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:50,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:51,259 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 04:05:51,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:51,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866262776] [2024-06-28 04:05:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866262776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:51,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:51,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:05:51,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349791025] [2024-06-28 04:05:51,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:51,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:05:51,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:05:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:05:51,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:05:51,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 685 transitions, 13720 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:51,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:51,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:05:51,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:53,803 INFO L124 PetriNetUnfolderBase]: 5815/9009 cut-off events. [2024-06-28 04:05:53,804 INFO L125 PetriNetUnfolderBase]: For 904749/904770 co-relation queries the response was YES. [2024-06-28 04:05:53,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85964 conditions, 9009 events. 5815/9009 cut-off events. For 904749/904770 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 55906 event pairs, 1399 based on Foata normal form. 18/9015 useless extension candidates. Maximal degree in co-relation 85759. Up to 8652 conditions per place. [2024-06-28 04:05:53,956 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 619 selfloop transitions, 112 changer transitions 0/734 dead transitions. [2024-06-28 04:05:53,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 734 transitions, 16312 flow [2024-06-28 04:05:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:05:53,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 04:05:53,958 INFO L175 Difference]: Start difference. First operand has 446 places, 685 transitions, 13720 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:05:53,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 734 transitions, 16312 flow [2024-06-28 04:05:58,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 734 transitions, 15977 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 04:05:58,446 INFO L231 Difference]: Finished difference. Result has 449 places, 710 transitions, 14385 flow [2024-06-28 04:05:58,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13406, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14385, PETRI_PLACES=449, PETRI_TRANSITIONS=710} [2024-06-28 04:05:58,447 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-28 04:05:58,447 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 710 transitions, 14385 flow [2024-06-28 04:05:58,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:58,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:58,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:58,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:05:58,447 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 04:05:58,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash 449480232, now seen corresponding path program 2 times [2024-06-28 04:05:58,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:58,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771796167] [2024-06-28 04:05:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:58,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:58,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771796167] [2024-06-28 04:05:58,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771796167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:58,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:58,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:05:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413716443] [2024-06-28 04:05:58,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:58,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:05:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:05:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:05:58,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:05:58,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 710 transitions, 14385 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:58,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:58,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:05:58,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:01,485 INFO L124 PetriNetUnfolderBase]: 5865/9088 cut-off events. [2024-06-28 04:06:01,485 INFO L125 PetriNetUnfolderBase]: For 922373/922385 co-relation queries the response was YES. [2024-06-28 04:06:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87293 conditions, 9088 events. 5865/9088 cut-off events. For 922373/922385 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 56451 event pairs, 1665 based on Foata normal form. 12/9094 useless extension candidates. Maximal degree in co-relation 87084. Up to 8686 conditions per place. [2024-06-28 04:06:01,644 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 620 selfloop transitions, 130 changer transitions 0/753 dead transitions. [2024-06-28 04:06:01,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 753 transitions, 16661 flow [2024-06-28 04:06:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:06:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:06:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 04:06:01,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41785714285714287 [2024-06-28 04:06:01,648 INFO L175 Difference]: Start difference. First operand has 449 places, 710 transitions, 14385 flow. Second operand 7 states and 117 transitions. [2024-06-28 04:06:01,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 753 transitions, 16661 flow [2024-06-28 04:06:06,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 753 transitions, 16508 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 04:06:06,066 INFO L231 Difference]: Finished difference. Result has 455 places, 729 transitions, 15014 flow [2024-06-28 04:06:06,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14259, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15014, PETRI_PLACES=455, PETRI_TRANSITIONS=729} [2024-06-28 04:06:06,067 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 414 predicate places. [2024-06-28 04:06:06,067 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 729 transitions, 15014 flow [2024-06-28 04:06:06,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:06,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:06,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:06,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:06:06,068 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 04:06:06,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1689412032, now seen corresponding path program 3 times [2024-06-28 04:06:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:06,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253431453] [2024-06-28 04:06:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:06,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:06,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:06,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253431453] [2024-06-28 04:06:06,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253431453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:06,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:06,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:06:06,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622068908] [2024-06-28 04:06:06,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:06,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:06:06,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:06,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:06:06,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:06:06,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:06:06,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 729 transitions, 15014 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:06,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:06,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:06:06,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:09,096 INFO L124 PetriNetUnfolderBase]: 5882/9102 cut-off events. [2024-06-28 04:06:09,096 INFO L125 PetriNetUnfolderBase]: For 916356/916365 co-relation queries the response was YES. [2024-06-28 04:06:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87266 conditions, 9102 events. 5882/9102 cut-off events. For 916356/916365 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 56288 event pairs, 1304 based on Foata normal form. 11/9094 useless extension candidates. Maximal degree in co-relation 87054. Up to 8700 conditions per place. [2024-06-28 04:06:09,250 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 623 selfloop transitions, 123 changer transitions 0/749 dead transitions. [2024-06-28 04:06:09,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 749 transitions, 16853 flow [2024-06-28 04:06:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:06:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:06:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 04:06:09,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 04:06:09,251 INFO L175 Difference]: Start difference. First operand has 455 places, 729 transitions, 15014 flow. Second operand 6 states and 101 transitions. [2024-06-28 04:06:09,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 749 transitions, 16853 flow [2024-06-28 04:06:13,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 749 transitions, 16661 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:13,519 INFO L231 Difference]: Finished difference. Result has 456 places, 733 transitions, 15142 flow [2024-06-28 04:06:13,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14832, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15142, PETRI_PLACES=456, PETRI_TRANSITIONS=733} [2024-06-28 04:06:13,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-28 04:06:13,520 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 733 transitions, 15142 flow [2024-06-28 04:06:13,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:13,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:13,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:13,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:06:13,521 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 04:06:13,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1689400872, now seen corresponding path program 4 times [2024-06-28 04:06:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:13,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704561671] [2024-06-28 04:06:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:13,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:13,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704561671] [2024-06-28 04:06:13,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704561671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:13,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:13,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:06:13,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973313415] [2024-06-28 04:06:13,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:13,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:06:13,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:06:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:06:14,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:06:14,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 733 transitions, 15142 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:14,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:14,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:06:14,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:16,650 INFO L124 PetriNetUnfolderBase]: 5870/9096 cut-off events. [2024-06-28 04:06:16,650 INFO L125 PetriNetUnfolderBase]: For 903164/903176 co-relation queries the response was YES. [2024-06-28 04:06:16,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86806 conditions, 9096 events. 5870/9096 cut-off events. For 903164/903176 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 56513 event pairs, 1671 based on Foata normal form. 12/9102 useless extension candidates. Maximal degree in co-relation 86594. Up to 8692 conditions per place. [2024-06-28 04:06:16,815 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 624 selfloop transitions, 125 changer transitions 0/752 dead transitions. [2024-06-28 04:06:16,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 752 transitions, 16760 flow [2024-06-28 04:06:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:06:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:06:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 04:06:16,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:06:16,816 INFO L175 Difference]: Start difference. First operand has 456 places, 733 transitions, 15142 flow. Second operand 6 states and 104 transitions. [2024-06-28 04:06:16,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 752 transitions, 16760 flow [2024-06-28 04:06:20,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 752 transitions, 16475 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:20,807 INFO L231 Difference]: Finished difference. Result has 457 places, 733 transitions, 15141 flow [2024-06-28 04:06:20,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14857, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15141, PETRI_PLACES=457, PETRI_TRANSITIONS=733} [2024-06-28 04:06:20,807 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-28 04:06:20,808 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 733 transitions, 15141 flow [2024-06-28 04:06:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:20,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:20,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:20,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:06:20,808 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:20,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2114678821, now seen corresponding path program 5 times [2024-06-28 04:06:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037099126] [2024-06-28 04:06:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:20,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:21,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:21,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037099126] [2024-06-28 04:06:21,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037099126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:21,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:21,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:06:21,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703514233] [2024-06-28 04:06:21,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:21,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:06:21,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:06:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:06:22,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:06:22,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 733 transitions, 15141 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:22,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:22,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:06:22,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:24,811 INFO L124 PetriNetUnfolderBase]: 5965/9246 cut-off events. [2024-06-28 04:06:24,811 INFO L125 PetriNetUnfolderBase]: For 941480/941486 co-relation queries the response was YES. [2024-06-28 04:06:24,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87927 conditions, 9246 events. 5965/9246 cut-off events. For 941480/941486 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 57555 event pairs, 1219 based on Foata normal form. 16/9249 useless extension candidates. Maximal degree in co-relation 87715. Up to 8754 conditions per place. [2024-06-28 04:06:24,982 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 686 selfloop transitions, 84 changer transitions 0/773 dead transitions. [2024-06-28 04:06:24,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 773 transitions, 16904 flow [2024-06-28 04:06:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:06:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:06:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 04:06:24,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 04:06:24,986 INFO L175 Difference]: Start difference. First operand has 457 places, 733 transitions, 15141 flow. Second operand 11 states and 170 transitions. [2024-06-28 04:06:24,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 773 transitions, 16904 flow [2024-06-28 04:06:29,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 773 transitions, 16619 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:29,478 INFO L231 Difference]: Finished difference. Result has 462 places, 736 transitions, 15123 flow [2024-06-28 04:06:29,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14856, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15123, PETRI_PLACES=462, PETRI_TRANSITIONS=736} [2024-06-28 04:06:29,479 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-28 04:06:29,479 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 736 transitions, 15123 flow [2024-06-28 04:06:29,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:29,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:29,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:29,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:06:29,480 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:29,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash -327210491, now seen corresponding path program 6 times [2024-06-28 04:06:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:29,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352755128] [2024-06-28 04:06:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:29,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:30,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352755128] [2024-06-28 04:06:30,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352755128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:30,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:30,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:30,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648528652] [2024-06-28 04:06:30,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:30,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:30,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:30,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:30,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:06:30,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 736 transitions, 15123 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:30,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:30,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:06:30,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:32,910 INFO L124 PetriNetUnfolderBase]: 6006/9315 cut-off events. [2024-06-28 04:06:32,911 INFO L125 PetriNetUnfolderBase]: For 948893/948897 co-relation queries the response was YES. [2024-06-28 04:06:33,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88509 conditions, 9315 events. 6006/9315 cut-off events. For 948893/948897 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 58016 event pairs, 1185 based on Foata normal form. 16/9329 useless extension candidates. Maximal degree in co-relation 88297. Up to 8010 conditions per place. [2024-06-28 04:06:33,081 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 574 selfloop transitions, 195 changer transitions 0/772 dead transitions. [2024-06-28 04:06:33,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 772 transitions, 16890 flow [2024-06-28 04:06:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:06:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:06:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:06:33,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:06:33,083 INFO L175 Difference]: Start difference. First operand has 462 places, 736 transitions, 15123 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:06:33,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 772 transitions, 16890 flow [2024-06-28 04:06:37,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 772 transitions, 16715 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 04:06:37,649 INFO L231 Difference]: Finished difference. Result has 465 places, 738 transitions, 15506 flow [2024-06-28 04:06:37,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14948, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15506, PETRI_PLACES=465, PETRI_TRANSITIONS=738} [2024-06-28 04:06:37,650 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-28 04:06:37,650 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 738 transitions, 15506 flow [2024-06-28 04:06:37,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:37,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:37,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:37,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:06:37,651 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:37,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1531744353, now seen corresponding path program 7 times [2024-06-28 04:06:37,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:37,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075447942] [2024-06-28 04:06:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:37,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:38,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:38,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075447942] [2024-06-28 04:06:38,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075447942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:38,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:38,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:06:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552875947] [2024-06-28 04:06:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:06:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:06:38,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:06:38,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:06:38,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 738 transitions, 15506 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:38,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:38,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:06:38,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:41,403 INFO L124 PetriNetUnfolderBase]: 6088/9473 cut-off events. [2024-06-28 04:06:41,404 INFO L125 PetriNetUnfolderBase]: For 970601/970605 co-relation queries the response was YES. [2024-06-28 04:06:41,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90103 conditions, 9473 events. 6088/9473 cut-off events. For 970601/970605 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 59681 event pairs, 1544 based on Foata normal form. 16/9487 useless extension candidates. Maximal degree in co-relation 89889. Up to 8679 conditions per place. [2024-06-28 04:06:41,583 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 633 selfloop transitions, 144 changer transitions 0/780 dead transitions. [2024-06-28 04:06:41,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 780 transitions, 17295 flow [2024-06-28 04:06:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:06:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:06:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 04:06:41,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 04:06:41,585 INFO L175 Difference]: Start difference. First operand has 465 places, 738 transitions, 15506 flow. Second operand 10 states and 161 transitions. [2024-06-28 04:06:41,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 780 transitions, 17295 flow [2024-06-28 04:06:46,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 780 transitions, 16884 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 04:06:46,762 INFO L231 Difference]: Finished difference. Result has 468 places, 740 transitions, 15454 flow [2024-06-28 04:06:46,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15095, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15454, PETRI_PLACES=468, PETRI_TRANSITIONS=740} [2024-06-28 04:06:46,762 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 427 predicate places. [2024-06-28 04:06:46,762 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 740 transitions, 15454 flow [2024-06-28 04:06:46,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:46,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:46,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:06:46,763 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:46,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1656718043, now seen corresponding path program 8 times [2024-06-28 04:06:46,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:46,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343604456] [2024-06-28 04:06:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:47,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:47,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343604456] [2024-06-28 04:06:47,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343604456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:47,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:47,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:47,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086169521] [2024-06-28 04:06:47,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:47,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:47,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:47,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:47,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:47,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:06:47,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 740 transitions, 15454 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:47,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:47,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:06:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:50,521 INFO L124 PetriNetUnfolderBase]: 6068/9425 cut-off events. [2024-06-28 04:06:50,522 INFO L125 PetriNetUnfolderBase]: For 923594/923598 co-relation queries the response was YES. [2024-06-28 04:06:50,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88416 conditions, 9425 events. 6068/9425 cut-off events. For 923594/923598 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 58922 event pairs, 1184 based on Foata normal form. 16/9439 useless extension candidates. Maximal degree in co-relation 88201. Up to 8201 conditions per place. [2024-06-28 04:06:50,715 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 580 selfloop transitions, 191 changer transitions 0/774 dead transitions. [2024-06-28 04:06:50,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 774 transitions, 17154 flow [2024-06-28 04:06:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:06:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:06:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:06:50,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 04:06:50,717 INFO L175 Difference]: Start difference. First operand has 468 places, 740 transitions, 15454 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:06:50,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 774 transitions, 17154 flow [2024-06-28 04:06:55,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 774 transitions, 16838 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 04:06:55,133 INFO L231 Difference]: Finished difference. Result has 469 places, 740 transitions, 15541 flow [2024-06-28 04:06:55,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15138, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15541, PETRI_PLACES=469, PETRI_TRANSITIONS=740} [2024-06-28 04:06:55,134 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-28 04:06:55,134 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 740 transitions, 15541 flow [2024-06-28 04:06:55,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:55,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:55,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:55,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:06:55,134 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:55,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash -828742801, now seen corresponding path program 9 times [2024-06-28 04:06:55,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:55,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114364486] [2024-06-28 04:06:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:55,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:56,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:56,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114364486] [2024-06-28 04:06:56,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114364486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:56,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:56,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:06:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599187966] [2024-06-28 04:06:56,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:56,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:06:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:06:56,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:06:56,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:06:56,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 740 transitions, 15541 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:56,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:56,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:06:56,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:59,213 INFO L124 PetriNetUnfolderBase]: 6109/9499 cut-off events. [2024-06-28 04:06:59,214 INFO L125 PetriNetUnfolderBase]: For 944282/944291 co-relation queries the response was YES. [2024-06-28 04:06:59,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89205 conditions, 9499 events. 6109/9499 cut-off events. For 944282/944291 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 59633 event pairs, 1252 based on Foata normal form. 18/9498 useless extension candidates. Maximal degree in co-relation 88989. Up to 8642 conditions per place. [2024-06-28 04:06:59,390 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 606 selfloop transitions, 169 changer transitions 0/778 dead transitions. [2024-06-28 04:06:59,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 778 transitions, 17313 flow [2024-06-28 04:06:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:06:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:06:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 04:06:59,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-28 04:06:59,391 INFO L175 Difference]: Start difference. First operand has 469 places, 740 transitions, 15541 flow. Second operand 10 states and 163 transitions. [2024-06-28 04:06:59,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 778 transitions, 17313 flow [2024-06-28 04:07:04,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 778 transitions, 16888 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:05,000 INFO L231 Difference]: Finished difference. Result has 471 places, 741 transitions, 15502 flow [2024-06-28 04:07:05,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15116, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15502, PETRI_PLACES=471, PETRI_TRANSITIONS=741} [2024-06-28 04:07:05,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-28 04:07:05,001 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 741 transitions, 15502 flow [2024-06-28 04:07:05,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:05,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:05,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:05,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:07:05,002 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:05,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -828858121, now seen corresponding path program 10 times [2024-06-28 04:07:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:05,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413571014] [2024-06-28 04:07:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:05,887 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 04:07:05,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:05,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413571014] [2024-06-28 04:07:05,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413571014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:05,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:05,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:07:05,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998869444] [2024-06-28 04:07:05,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:05,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:07:05,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:05,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:07:05,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:07:05,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:07:05,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 741 transitions, 15502 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:05,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:05,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:07:05,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:09,155 INFO L124 PetriNetUnfolderBase]: 6089/9467 cut-off events. [2024-06-28 04:07:09,155 INFO L125 PetriNetUnfolderBase]: For 883019/883028 co-relation queries the response was YES. [2024-06-28 04:07:09,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87461 conditions, 9467 events. 6089/9467 cut-off events. For 883019/883028 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 59395 event pairs, 1221 based on Foata normal form. 18/9466 useless extension candidates. Maximal degree in co-relation 87245. Up to 8533 conditions per place. [2024-06-28 04:07:09,312 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 598 selfloop transitions, 173 changer transitions 0/774 dead transitions. [2024-06-28 04:07:09,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 774 transitions, 17198 flow [2024-06-28 04:07:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:07:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:07:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:07:09,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 04:07:09,314 INFO L175 Difference]: Start difference. First operand has 471 places, 741 transitions, 15502 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:07:09,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 774 transitions, 17198 flow [2024-06-28 04:07:13,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 774 transitions, 16832 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:13,932 INFO L231 Difference]: Finished difference. Result has 472 places, 741 transitions, 15488 flow [2024-06-28 04:07:13,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15136, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15488, PETRI_PLACES=472, PETRI_TRANSITIONS=741} [2024-06-28 04:07:13,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-28 04:07:13,933 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 741 transitions, 15488 flow [2024-06-28 04:07:13,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:13,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:13,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:07:13,933 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:13,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash 843046497, now seen corresponding path program 11 times [2024-06-28 04:07:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:13,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942221015] [2024-06-28 04:07:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:14,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:14,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942221015] [2024-06-28 04:07:14,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942221015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:14,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:14,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:07:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014893253] [2024-06-28 04:07:14,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:14,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:07:14,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:07:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:07:15,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:07:15,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 741 transitions, 15488 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:15,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:15,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:07:15,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:18,354 INFO L124 PetriNetUnfolderBase]: 6069/9435 cut-off events. [2024-06-28 04:07:18,354 INFO L125 PetriNetUnfolderBase]: For 854615/854624 co-relation queries the response was YES. [2024-06-28 04:07:18,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86306 conditions, 9435 events. 6069/9435 cut-off events. For 854615/854624 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 59173 event pairs, 1209 based on Foata normal form. 18/9434 useless extension candidates. Maximal degree in co-relation 86089. Up to 8491 conditions per place. [2024-06-28 04:07:18,513 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 597 selfloop transitions, 174 changer transitions 0/774 dead transitions. [2024-06-28 04:07:18,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 774 transitions, 17194 flow [2024-06-28 04:07:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 04:07:18,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 04:07:18,515 INFO L175 Difference]: Start difference. First operand has 472 places, 741 transitions, 15488 flow. Second operand 10 states and 161 transitions. [2024-06-28 04:07:18,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 774 transitions, 17194 flow [2024-06-28 04:07:23,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 774 transitions, 16715 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:23,228 INFO L231 Difference]: Finished difference. Result has 474 places, 741 transitions, 15365 flow [2024-06-28 04:07:23,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15009, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15365, PETRI_PLACES=474, PETRI_TRANSITIONS=741} [2024-06-28 04:07:23,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-28 04:07:23,229 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 741 transitions, 15365 flow [2024-06-28 04:07:23,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:23,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:23,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:23,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:07:23,230 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:23,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash 812719551, now seen corresponding path program 12 times [2024-06-28 04:07:23,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:23,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137653112] [2024-06-28 04:07:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:23,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:24,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:24,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137653112] [2024-06-28 04:07:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137653112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:24,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:24,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:07:24,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081969393] [2024-06-28 04:07:24,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:24,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:07:24,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:07:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:07:24,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:07:24,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 741 transitions, 15365 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:24,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:24,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:07:24,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:27,664 INFO L124 PetriNetUnfolderBase]: 6049/9403 cut-off events. [2024-06-28 04:07:27,664 INFO L125 PetriNetUnfolderBase]: For 820169/820178 co-relation queries the response was YES. [2024-06-28 04:07:27,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84633 conditions, 9403 events. 6049/9403 cut-off events. For 820169/820178 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 59009 event pairs, 1173 based on Foata normal form. 18/9402 useless extension candidates. Maximal degree in co-relation 84416. Up to 8546 conditions per place. [2024-06-28 04:07:27,827 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 581 selfloop transitions, 189 changer transitions 0/773 dead transitions. [2024-06-28 04:07:27,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 773 transitions, 16905 flow [2024-06-28 04:07:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 04:07:27,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-28 04:07:27,829 INFO L175 Difference]: Start difference. First operand has 474 places, 741 transitions, 15365 flow. Second operand 10 states and 159 transitions. [2024-06-28 04:07:27,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 773 transitions, 16905 flow [2024-06-28 04:07:32,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 773 transitions, 16514 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 04:07:32,193 INFO L231 Difference]: Finished difference. Result has 474 places, 740 transitions, 15192 flow [2024-06-28 04:07:32,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14810, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15192, PETRI_PLACES=474, PETRI_TRANSITIONS=740} [2024-06-28 04:07:32,194 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-28 04:07:32,194 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 740 transitions, 15192 flow [2024-06-28 04:07:32,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:32,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:32,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:32,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:07:32,194 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:32,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1685169039, now seen corresponding path program 1 times [2024-06-28 04:07:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:32,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801319711] [2024-06-28 04:07:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:32,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:33,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:33,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801319711] [2024-06-28 04:07:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801319711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:33,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94347593] [2024-06-28 04:07:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:33,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:33,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:33,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:07:33,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 740 transitions, 15192 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:33,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:33,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:07:33,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:36,176 INFO L124 PetriNetUnfolderBase]: 6054/9422 cut-off events. [2024-06-28 04:07:36,176 INFO L125 PetriNetUnfolderBase]: For 785969/785969 co-relation queries the response was YES. [2024-06-28 04:07:36,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84613 conditions, 9422 events. 6054/9422 cut-off events. For 785969/785969 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 59331 event pairs, 2187 based on Foata normal form. 1/9421 useless extension candidates. Maximal degree in co-relation 84395. Up to 9313 conditions per place. [2024-06-28 04:07:36,338 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 727 selfloop transitions, 37 changer transitions 0/767 dead transitions. [2024-06-28 04:07:36,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 767 transitions, 17124 flow [2024-06-28 04:07:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:07:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:07:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 04:07:36,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-28 04:07:36,340 INFO L175 Difference]: Start difference. First operand has 474 places, 740 transitions, 15192 flow. Second operand 9 states and 134 transitions. [2024-06-28 04:07:36,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 767 transitions, 17124 flow [2024-06-28 04:07:40,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 767 transitions, 16730 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:40,613 INFO L231 Difference]: Finished difference. Result has 475 places, 746 transitions, 15025 flow [2024-06-28 04:07:40,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14798, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15025, PETRI_PLACES=475, PETRI_TRANSITIONS=746} [2024-06-28 04:07:40,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-28 04:07:40,613 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 746 transitions, 15025 flow [2024-06-28 04:07:40,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:40,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:40,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:40,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:07:40,614 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:40,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1685259404, now seen corresponding path program 1 times [2024-06-28 04:07:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498649986] [2024-06-28 04:07:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:41,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:41,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498649986] [2024-06-28 04:07:41,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498649986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:41,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:41,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:07:41,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156038660] [2024-06-28 04:07:41,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:07:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:07:41,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:07:41,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:07:41,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 746 transitions, 15025 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:41,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:41,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:07:41,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:44,215 INFO L124 PetriNetUnfolderBase]: 6118/9504 cut-off events. [2024-06-28 04:07:44,215 INFO L125 PetriNetUnfolderBase]: For 833335/833347 co-relation queries the response was YES. [2024-06-28 04:07:44,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86461 conditions, 9504 events. 6118/9504 cut-off events. For 833335/833347 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 59811 event pairs, 1756 based on Foata normal form. 12/9510 useless extension candidates. Maximal degree in co-relation 86242. Up to 9089 conditions per place. [2024-06-28 04:07:44,388 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 690 selfloop transitions, 88 changer transitions 0/781 dead transitions. [2024-06-28 04:07:44,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 781 transitions, 17555 flow [2024-06-28 04:07:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:07:44,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 04:07:44,390 INFO L175 Difference]: Start difference. First operand has 475 places, 746 transitions, 15025 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:07:44,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 781 transitions, 17555 flow [2024-06-28 04:07:49,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 781 transitions, 17446 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 04:07:49,312 INFO L231 Difference]: Finished difference. Result has 479 places, 757 transitions, 15543 flow [2024-06-28 04:07:49,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14916, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15543, PETRI_PLACES=479, PETRI_TRANSITIONS=757} [2024-06-28 04:07:49,313 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 04:07:49,313 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 757 transitions, 15543 flow [2024-06-28 04:07:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:49,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:49,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:49,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:07:49,314 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:49,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:49,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1609175208, now seen corresponding path program 2 times [2024-06-28 04:07:49,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:49,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509795258] [2024-06-28 04:07:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:49,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:49,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509795258] [2024-06-28 04:07:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509795258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:49,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:49,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:07:49,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245019753] [2024-06-28 04:07:49,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:49,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:07:49,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:07:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:07:49,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:07:49,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 757 transitions, 15543 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:49,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:49,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:07:49,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:53,219 INFO L124 PetriNetUnfolderBase]: 6194/9609 cut-off events. [2024-06-28 04:07:53,219 INFO L125 PetriNetUnfolderBase]: For 898481/898493 co-relation queries the response was YES. [2024-06-28 04:07:53,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89813 conditions, 9609 events. 6194/9609 cut-off events. For 898481/898493 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 60451 event pairs, 1779 based on Foata normal form. 12/9615 useless extension candidates. Maximal degree in co-relation 89591. Up to 9304 conditions per place. [2024-06-28 04:07:53,383 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 709 selfloop transitions, 80 changer transitions 0/792 dead transitions. [2024-06-28 04:07:53,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 792 transitions, 18095 flow [2024-06-28 04:07:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 04:07:53,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 04:07:53,384 INFO L175 Difference]: Start difference. First operand has 479 places, 757 transitions, 15543 flow. Second operand 10 states and 155 transitions. [2024-06-28 04:07:53,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 792 transitions, 18095 flow [2024-06-28 04:07:58,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 792 transitions, 17759 flow, removed 135 selfloop flow, removed 3 redundant places. [2024-06-28 04:07:58,560 INFO L231 Difference]: Finished difference. Result has 487 places, 769 transitions, 15862 flow [2024-06-28 04:07:58,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15279, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15862, PETRI_PLACES=487, PETRI_TRANSITIONS=769} [2024-06-28 04:07:58,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-28 04:07:58,561 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 769 transitions, 15862 flow [2024-06-28 04:07:58,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:58,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:58,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:58,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:07:58,562 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:58,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1688978319, now seen corresponding path program 2 times [2024-06-28 04:07:58,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:58,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442739513] [2024-06-28 04:07:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:58,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:59,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442739513] [2024-06-28 04:07:59,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442739513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:59,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:59,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:07:59,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197105984] [2024-06-28 04:07:59,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:59,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:07:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:59,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:07:59,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:07:59,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:07:59,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 769 transitions, 15862 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:59,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:59,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:07:59,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:02,446 INFO L124 PetriNetUnfolderBase]: 6199/9623 cut-off events. [2024-06-28 04:08:02,446 INFO L125 PetriNetUnfolderBase]: For 894662/894662 co-relation queries the response was YES. [2024-06-28 04:08:02,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89567 conditions, 9623 events. 6199/9623 cut-off events. For 894662/894662 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 60624 event pairs, 2237 based on Foata normal form. 1/9622 useless extension candidates. Maximal degree in co-relation 89342. Up to 9546 conditions per place. [2024-06-28 04:08:02,614 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 759 selfloop transitions, 23 changer transitions 0/785 dead transitions. [2024-06-28 04:08:02,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 785 transitions, 17540 flow [2024-06-28 04:08:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-28 04:08:02,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 04:08:02,616 INFO L175 Difference]: Start difference. First operand has 487 places, 769 transitions, 15862 flow. Second operand 8 states and 114 transitions. [2024-06-28 04:08:02,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 785 transitions, 17540 flow [2024-06-28 04:08:07,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 785 transitions, 17298 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-06-28 04:08:07,495 INFO L231 Difference]: Finished difference. Result has 490 places, 772 transitions, 15744 flow [2024-06-28 04:08:07,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15620, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15744, PETRI_PLACES=490, PETRI_TRANSITIONS=772} [2024-06-28 04:08:07,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 449 predicate places. [2024-06-28 04:08:07,496 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 772 transitions, 15744 flow [2024-06-28 04:08:07,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:07,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:07,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:07,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:08:07,497 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:07,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash 714761474, now seen corresponding path program 3 times [2024-06-28 04:08:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:07,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49144463] [2024-06-28 04:08:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:07,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:08,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:08,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49144463] [2024-06-28 04:08:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49144463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458420738] [2024-06-28 04:08:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:08,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:08,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:08,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:08:08,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 772 transitions, 15744 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:08,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:08,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:08:08,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:11,621 INFO L124 PetriNetUnfolderBase]: 6191/9606 cut-off events. [2024-06-28 04:08:11,622 INFO L125 PetriNetUnfolderBase]: For 896389/896401 co-relation queries the response was YES. [2024-06-28 04:08:11,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88779 conditions, 9606 events. 6191/9606 cut-off events. For 896389/896401 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 60453 event pairs, 1760 based on Foata normal form. 12/9612 useless extension candidates. Maximal degree in co-relation 88552. Up to 9308 conditions per place. [2024-06-28 04:08:11,783 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 713 selfloop transitions, 74 changer transitions 0/790 dead transitions. [2024-06-28 04:08:11,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 790 transitions, 17612 flow [2024-06-28 04:08:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:11,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:08:11,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:08:11,784 INFO L175 Difference]: Start difference. First operand has 490 places, 772 transitions, 15744 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:08:11,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 790 transitions, 17612 flow [2024-06-28 04:08:17,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 790 transitions, 17432 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:17,083 INFO L231 Difference]: Finished difference. Result has 492 places, 772 transitions, 15720 flow [2024-06-28 04:08:17,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15564, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15720, PETRI_PLACES=492, PETRI_TRANSITIONS=772} [2024-06-28 04:08:17,084 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-28 04:08:17,084 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 772 transitions, 15720 flow [2024-06-28 04:08:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:17,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:17,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:17,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:08:17,085 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:17,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash 151966769, now seen corresponding path program 1 times [2024-06-28 04:08:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548096425] [2024-06-28 04:08:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:17,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548096425] [2024-06-28 04:08:17,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548096425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:17,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:17,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:08:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023097323] [2024-06-28 04:08:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:17,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:08:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:08:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:08:17,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 04:08:17,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 772 transitions, 15720 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:17,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:17,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 04:08:17,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:21,103 INFO L124 PetriNetUnfolderBase]: 6185/9596 cut-off events. [2024-06-28 04:08:21,103 INFO L125 PetriNetUnfolderBase]: For 894155/894167 co-relation queries the response was YES. [2024-06-28 04:08:21,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88562 conditions, 9596 events. 6185/9596 cut-off events. For 894155/894167 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 60320 event pairs, 1797 based on Foata normal form. 10/9599 useless extension candidates. Maximal degree in co-relation 88334. Up to 9474 conditions per place. [2024-06-28 04:08:21,271 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 742 selfloop transitions, 39 changer transitions 0/784 dead transitions. [2024-06-28 04:08:21,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 784 transitions, 17402 flow [2024-06-28 04:08:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:08:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:08:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-28 04:08:21,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:08:21,272 INFO L175 Difference]: Start difference. First operand has 492 places, 772 transitions, 15720 flow. Second operand 6 states and 95 transitions. [2024-06-28 04:08:21,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 784 transitions, 17402 flow [2024-06-28 04:08:27,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 784 transitions, 17254 flow, removed 0 selfloop flow, removed 7 redundant places.